./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a80d5d6260f748dd9867d7bcd6f4a93a5987d3d416867522c1bef6a78e755228 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:10:44,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:10:44,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:10:44,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:10:44,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:10:44,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:10:44,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:10:44,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:10:44,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:10:44,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:10:44,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:10:44,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:10:44,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:10:44,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:10:44,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:10:44,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:10:44,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:10:44,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:10:44,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:10:44,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:10:44,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:10:44,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:10:44,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:10:44,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:10:44,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:10:44,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:10:44,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:10:44,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:10:44,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:10:44,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:10:44,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:10:44,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:10:44,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:10:44,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:10:44,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:10:44,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:10:44,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:10:44,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:10:44,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:10:44,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:10:44,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:10:44,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:10:44,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:10:44,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:10:44,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:10:44,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:10:44,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:10:44,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:10:44,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:10:44,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:10:44,319 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:10:44,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:10:44,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:10:44,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:10:44,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:10:44,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:10:44,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:10:44,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:10:44,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:10:44,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:10:44,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:10:44,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:10:44,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:10:44,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:10:44,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:10:44,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:10:44,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:10:44,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:10:44,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:10:44,323 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:10:44,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:10:44,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:10:44,323 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a80d5d6260f748dd9867d7bcd6f4a93a5987d3d416867522c1bef6a78e755228 [2021-12-28 04:10:44,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:10:44,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:10:44,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:10:44,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:10:44,628 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:10:44,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2021-12-28 04:10:44,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30a0a82a/64101d4fbfe64bf4a935472191b46425/FLAGd4fae136e [2021-12-28 04:10:45,293 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:10:45,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2021-12-28 04:10:45,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30a0a82a/64101d4fbfe64bf4a935472191b46425/FLAGd4fae136e [2021-12-28 04:10:45,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30a0a82a/64101d4fbfe64bf4a935472191b46425 [2021-12-28 04:10:45,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:10:45,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:10:45,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:10:45,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:10:45,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:10:45,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:10:45" (1/1) ... [2021-12-28 04:10:45,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@163b07fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:45, skipping insertion in model container [2021-12-28 04:10:45,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:10:45" (1/1) ... [2021-12-28 04:10:45,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:10:45,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:10:46,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i[191080,191093] [2021-12-28 04:10:46,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:10:46,907 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:10:47,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i[191080,191093] [2021-12-28 04:10:47,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:10:47,196 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:10:47,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47 WrapperNode [2021-12-28 04:10:47,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:10:47,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:10:47,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:10:47,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:10:47,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (1/1) ... [2021-12-28 04:10:47,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (1/1) ... [2021-12-28 04:10:47,362 INFO L137 Inliner]: procedures = 210, calls = 1426, calls flagged for inlining = 105, calls inlined = 105, statements flattened = 3494 [2021-12-28 04:10:47,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:10:47,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:10:47,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:10:47,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:10:47,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (1/1) ... [2021-12-28 04:10:47,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (1/1) ... [2021-12-28 04:10:47,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (1/1) ... [2021-12-28 04:10:47,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (1/1) ... [2021-12-28 04:10:47,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (1/1) ... [2021-12-28 04:10:47,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (1/1) ... [2021-12-28 04:10:47,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (1/1) ... [2021-12-28 04:10:47,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:10:47,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:10:47,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:10:47,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:10:47,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (1/1) ... [2021-12-28 04:10:47,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:10:47,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:10:47,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 04:10:47,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 04:10:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_fe_init [2021-12-28 04:10:47,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_fe_init [2021-12-28 04:10:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-12-28 04:10:47,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-12-28 04:10:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-28 04:10:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-28 04:10:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:10:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:10:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-28 04:10:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-28 04:10:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:10:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:10:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:10:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:10:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure wait_i2c_result [2021-12-28 04:10:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_i2c_result [2021-12-28 04:10:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-28 04:10:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-28 04:10:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-28 04:10:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-28 04:10:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:10:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:10:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_stop_streaming [2021-12-28 04:10:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_stop_streaming [2021-12-28 04:10:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-28 04:10:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-28 04:10:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-28 04:10:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-28 04:10:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-12-28 04:10:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-12-28 04:10:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask [2021-12-28 04:10:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask [2021-12-28 04:10:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_lnb_ctrl [2021-12-28 04:10:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_lnb_ctrl [2021-12-28 04:10:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 04:10:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 04:10:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:10:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:10:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:10:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:10:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-28 04:10:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-28 04:10:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_free_dmabuf [2021-12-28 04:10:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_free_dmabuf [2021-12-28 04:10:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-28 04:10:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-28 04:10:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_alloc_dmabuf [2021-12-28 04:10:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_alloc_dmabuf [2021-12-28 04:10:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:10:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:10:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-28 04:10:47,609 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-28 04:10:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-28 04:10:47,609 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-28 04:10:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-28 04:10:47,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-28 04:10:47,610 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2021-12-28 04:10:47,610 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2021-12-28 04:10:47,611 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-28 04:10:47,611 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-28 04:10:47,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:10:47,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:10:47,612 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-28 04:10:47,612 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-28 04:10:47,612 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_base [2021-12-28 04:10:47,612 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_base [2021-12-28 04:10:47,612 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 04:10:47,612 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 04:10:47,612 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 04:10:47,612 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 04:10:47,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:10:47,613 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_resume [2021-12-28 04:10:47,613 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_resume [2021-12-28 04:10:47,613 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-28 04:10:47,613 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-28 04:10:47,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:10:47,613 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_demod_write [2021-12-28 04:10:47,614 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_demod_write [2021-12-28 04:10:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-28 04:10:47,614 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-28 04:10:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:10:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure send_i2c_cmd [2021-12-28 04:10:47,614 INFO L138 BoogieDeclarations]: Found implementation of procedure send_i2c_cmd [2021-12-28 04:10:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 04:10:47,614 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 04:10:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter_packets [2021-12-28 04:10:47,615 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter_packets [2021-12-28 04:10:47,615 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:10:47,615 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:10:47,615 INFO L130 BoogieDeclarations]: Found specification of procedure cmdbuf_add [2021-12-28 04:10:47,615 INFO L138 BoogieDeclarations]: Found implementation of procedure cmdbuf_add [2021-12-28 04:10:47,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:10:47,616 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-28 04:10:47,616 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-28 04:10:47,616 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_stop_dma [2021-12-28 04:10:47,616 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_stop_dma [2021-12-28 04:10:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:10:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:10:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure put_byte_write [2021-12-28 04:10:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure put_byte_write [2021-12-28 04:10:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_coherent_mask [2021-12-28 04:10:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_coherent_mask [2021-12-28 04:10:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:10:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:10:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:10:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_set_tuner_power [2021-12-28 04:10:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_set_tuner_power [2021-12-28 04:10:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:10:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure pci_ioremap_bar [2021-12-28 04:10:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_ioremap_bar [2021-12-28 04:10:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:10:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 04:10:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_suspend [2021-12-28 04:10:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_suspend [2021-12-28 04:10:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-28 04:10:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-28 04:10:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_start_dma [2021-12-28 04:10:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_start_dma [2021-12-28 04:10:47,621 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_find_adapter [2021-12-28 04:10:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_find_adapter [2021-12-28 04:10:47,623 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-28 04:10:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-28 04:10:47,623 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_init_dmabuf [2021-12-28 04:10:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_init_dmabuf [2021-12-28 04:10:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-28 04:10:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-28 04:10:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-28 04:10:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-28 04:10:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_del_adapter [2021-12-28 04:10:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_del_adapter [2021-12-28 04:10:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_cleanup_adapter [2021-12-28 04:10:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_cleanup_adapter [2021-12-28 04:10:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:10:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:10:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:10:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 04:10:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 04:10:48,164 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:10:48,166 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:10:50,700 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:11:00,568 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:11:00,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:11:00,584 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:11:00,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:11:00 BoogieIcfgContainer [2021-12-28 04:11:00,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:11:00,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:11:00,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:11:00,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:11:00,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:10:45" (1/3) ... [2021-12-28 04:11:00,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@870dcd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:11:00, skipping insertion in model container [2021-12-28 04:11:00,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:47" (2/3) ... [2021-12-28 04:11:00,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@870dcd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:11:00, skipping insertion in model container [2021-12-28 04:11:00,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:11:00" (3/3) ... [2021-12-28 04:11:00,593 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2021-12-28 04:11:00,597 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:11:00,597 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:11:00,642 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:11:00,651 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 04:11:00,652 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:11:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 989 states, 739 states have (on average 1.3802435723951285) internal successors, (1020), 756 states have internal predecessors, (1020), 190 states have call successors, (190), 59 states have call predecessors, (190), 58 states have return successors, (185), 185 states have call predecessors, (185), 185 states have call successors, (185) [2021-12-28 04:11:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 04:11:00,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:11:00,700 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:11:00,700 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:11:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:11:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1878981996, now seen corresponding path program 1 times [2021-12-28 04:11:00,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:11:00,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719610610] [2021-12-28 04:11:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:11:00,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:11:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:01,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:11:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:01,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:01,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:11:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:11:01,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:11:01,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719610610] [2021-12-28 04:11:01,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719610610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:11:01,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:11:01,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:11:01,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361260587] [2021-12-28 04:11:01,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:11:01,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:11:01,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:11:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:11:01,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:11:01,223 INFO L87 Difference]: Start difference. First operand has 989 states, 739 states have (on average 1.3802435723951285) internal successors, (1020), 756 states have internal predecessors, (1020), 190 states have call successors, (190), 59 states have call predecessors, (190), 58 states have return successors, (185), 185 states have call predecessors, (185), 185 states have call successors, (185) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:11:04,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:06,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:08,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:08,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:11:08,707 INFO L93 Difference]: Finished difference Result 2071 states and 2997 transitions. [2021-12-28 04:11:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:11:08,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2021-12-28 04:11:08,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:11:08,724 INFO L225 Difference]: With dead ends: 2071 [2021-12-28 04:11:08,724 INFO L226 Difference]: Without dead ends: 1075 [2021-12-28 04:11:08,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:11:08,733 INFO L933 BasicCegarLoop]: 1347 mSDtfsCounter, 521 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 463 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-12-28 04:11:08,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 2111 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 373 Invalid, 3 Unknown, 0 Unchecked, 7.3s Time] [2021-12-28 04:11:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-12-28 04:11:08,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 977. [2021-12-28 04:11:08,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 734 states have (on average 1.3719346049046321) internal successors, (1007), 744 states have internal predecessors, (1007), 185 states have call successors, (185), 58 states have call predecessors, (185), 57 states have return successors, (183), 183 states have call predecessors, (183), 183 states have call successors, (183) [2021-12-28 04:11:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1375 transitions. [2021-12-28 04:11:08,833 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1375 transitions. Word has length 51 [2021-12-28 04:11:08,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:11:08,834 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1375 transitions. [2021-12-28 04:11:08,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:11:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1375 transitions. [2021-12-28 04:11:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 04:11:08,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:11:08,842 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:11:08,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:11:08,843 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:11:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:11:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash 373161192, now seen corresponding path program 1 times [2021-12-28 04:11:08,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:11:08,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150784462] [2021-12-28 04:11:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:11:08,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:11:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:11:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:09,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:11:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:09,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:11:09,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:11:09,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150784462] [2021-12-28 04:11:09,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150784462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:11:09,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:11:09,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:11:09,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975837397] [2021-12-28 04:11:09,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:11:09,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:11:09,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:11:09,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:11:09,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:11:09,052 INFO L87 Difference]: Start difference. First operand 977 states and 1375 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 04:11:12,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:15,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:17,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:19,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:21,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:24,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:26,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:11:26,362 INFO L93 Difference]: Finished difference Result 3088 states and 4410 transitions. [2021-12-28 04:11:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:11:26,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2021-12-28 04:11:26,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:11:26,374 INFO L225 Difference]: With dead ends: 3088 [2021-12-28 04:11:26,375 INFO L226 Difference]: Without dead ends: 2121 [2021-12-28 04:11:26,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:11:26,381 INFO L933 BasicCegarLoop]: 1527 mSDtfsCounter, 1789 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 582 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 4104 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:11:26,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 4104 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 1396 Invalid, 7 Unknown, 0 Unchecked, 17.1s Time] [2021-12-28 04:11:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2021-12-28 04:11:26,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1922. [2021-12-28 04:11:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1444 states have (on average 1.3746537396121883) internal successors, (1985), 1463 states have internal predecessors, (1985), 363 states have call successors, (363), 115 states have call predecessors, (363), 114 states have return successors, (361), 361 states have call predecessors, (361), 361 states have call successors, (361) [2021-12-28 04:11:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 2709 transitions. [2021-12-28 04:11:26,463 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 2709 transitions. Word has length 51 [2021-12-28 04:11:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:11:26,464 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 2709 transitions. [2021-12-28 04:11:26,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 04:11:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 2709 transitions. [2021-12-28 04:11:26,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-28 04:11:26,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:11:26,471 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:11:26,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:11:26,472 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:11:26,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:11:26,473 INFO L85 PathProgramCache]: Analyzing trace with hash -133518992, now seen corresponding path program 1 times [2021-12-28 04:11:26,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:11:26,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486421815] [2021-12-28 04:11:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:11:26,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:11:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:26,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:11:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:26,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:11:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:26,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:26,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:11:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-28 04:11:26,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:11:26,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486421815] [2021-12-28 04:11:26,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486421815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:11:26,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:11:26,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:11:26,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674702087] [2021-12-28 04:11:26,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:11:26,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:11:26,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:11:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:11:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:11:26,765 INFO L87 Difference]: Start difference. First operand 1922 states and 2709 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 04:11:28,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:31,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:34,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:36,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:37,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:11:37,367 INFO L93 Difference]: Finished difference Result 6135 states and 8782 transitions. [2021-12-28 04:11:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:11:37,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2021-12-28 04:11:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:11:37,391 INFO L225 Difference]: With dead ends: 6135 [2021-12-28 04:11:37,391 INFO L226 Difference]: Without dead ends: 4218 [2021-12-28 04:11:37,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:11:37,403 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 2257 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 1042 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1042 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-12-28 04:11:37,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2384 Valid, 3397 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1042 Valid, 965 Invalid, 4 Unknown, 0 Unchecked, 10.4s Time] [2021-12-28 04:11:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4218 states. [2021-12-28 04:11:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4218 to 3822. [2021-12-28 04:11:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 2871 states have (on average 1.3747823058167885) internal successors, (3947), 2908 states have internal predecessors, (3947), 722 states have call successors, (722), 229 states have call predecessors, (722), 228 states have return successors, (724), 720 states have call predecessors, (724), 720 states have call successors, (724) [2021-12-28 04:11:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 5393 transitions. [2021-12-28 04:11:37,530 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 5393 transitions. Word has length 71 [2021-12-28 04:11:37,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:11:37,532 INFO L470 AbstractCegarLoop]: Abstraction has 3822 states and 5393 transitions. [2021-12-28 04:11:37,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 04:11:37,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 5393 transitions. [2021-12-28 04:11:37,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-28 04:11:37,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:11:37,535 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:11:37,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:11:37,535 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:11:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:11:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1826713808, now seen corresponding path program 1 times [2021-12-28 04:11:37,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:11:37,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641092643] [2021-12-28 04:11:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:11:37,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:11:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:11:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:11:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:37,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 04:11:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 04:11:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:11:37,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:11:37,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641092643] [2021-12-28 04:11:37,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641092643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:11:37,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:11:37,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:11:37,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800737771] [2021-12-28 04:11:37,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:11:37,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:11:37,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:11:37,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:11:37,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:11:37,825 INFO L87 Difference]: Start difference. First operand 3822 states and 5393 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:11:42,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:44,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:46,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:48,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:50,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:52,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:11:53,042 INFO L93 Difference]: Finished difference Result 11012 states and 15787 transitions. [2021-12-28 04:11:53,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:11:53,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2021-12-28 04:11:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:11:53,085 INFO L225 Difference]: With dead ends: 11012 [2021-12-28 04:11:53,085 INFO L226 Difference]: Without dead ends: 7200 [2021-12-28 04:11:53,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:11:53,109 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 1347 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 472 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 4378 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:11:53,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 4378 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 1518 Invalid, 6 Unknown, 0 Unchecked, 15.0s Time] [2021-12-28 04:11:53,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2021-12-28 04:11:53,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 6498. [2021-12-28 04:11:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6498 states, 4935 states have (on average 1.3860182370820668) internal successors, (6840), 4984 states have internal predecessors, (6840), 1188 states have call successors, (1188), 375 states have call predecessors, (1188), 374 states have return successors, (1190), 1186 states have call predecessors, (1190), 1186 states have call successors, (1190) [2021-12-28 04:11:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6498 states to 6498 states and 9218 transitions. [2021-12-28 04:11:53,334 INFO L78 Accepts]: Start accepts. Automaton has 6498 states and 9218 transitions. Word has length 82 [2021-12-28 04:11:53,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:11:53,335 INFO L470 AbstractCegarLoop]: Abstraction has 6498 states and 9218 transitions. [2021-12-28 04:11:53,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:11:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6498 states and 9218 transitions. [2021-12-28 04:11:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-28 04:11:53,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:11:53,342 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:11:53,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:11:53,342 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:11:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:11:53,342 INFO L85 PathProgramCache]: Analyzing trace with hash -513024234, now seen corresponding path program 1 times [2021-12-28 04:11:53,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:11:53,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209996712] [2021-12-28 04:11:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:11:53,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:11:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:11:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:11:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:11:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:11:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 04:11:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-28 04:11:53,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:11:53,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209996712] [2021-12-28 04:11:53,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209996712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:11:53,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:11:53,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:11:53,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961071401] [2021-12-28 04:11:53,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:11:53,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:11:53,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:11:53,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:11:53,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:11:53,623 INFO L87 Difference]: Start difference. First operand 6498 states and 9218 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)