./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.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 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 15:23:43,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 15:23:43,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 15:23:43,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 15:23:43,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 15:23:43,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 15:23:43,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 15:23:43,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 15:23:43,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 15:23:43,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 15:23:43,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 15:23:43,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 15:23:43,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 15:23:43,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 15:23:43,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 15:23:43,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 15:23:43,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 15:23:43,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 15:23:43,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 15:23:43,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 15:23:43,205 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 15:23:43,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 15:23:43,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 15:23:43,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 15:23:43,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 15:23:43,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 15:23:43,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 15:23:43,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 15:23:43,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 15:23:43,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 15:23:43,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 15:23:43,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 15:23:43,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 15:23:43,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 15:23:43,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 15:23:43,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 15:23:43,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 15:23:43,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 15:23:43,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 15:23:43,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 15:23:43,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 15:23:43,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 15:23:43,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 15:23:43,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 15:23:43,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 15:23:43,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 15:23:43,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 15:23:43,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 15:23:43,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 15:23:43,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 15:23:43,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 15:23:43,261 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 15:23:43,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 15:23:43,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 15:23:43,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 15:23:43,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 15:23:43,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 15:23:43,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 15:23:43,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 15:23:43,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 15:23:43,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 15:23:43,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 15:23:43,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 15:23:43,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 15:23:43,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 15:23:43,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 15:23:43,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 15:23:43,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 15:23:43,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 15:23:43,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 15:23:43,266 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 15:23:43,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 15:23:43,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 15:23:43,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2022-07-21 15:23:43,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 15:23:43,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 15:23:43,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 15:23:43,619 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 15:23:43,623 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 15:23:43,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-07-21 15:23:43,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf305301/75357659aab54320ae387ece79cfa471/FLAGa2a92ca0f [2022-07-21 15:23:44,506 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 15:23:44,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-07-21 15:23:44,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf305301/75357659aab54320ae387ece79cfa471/FLAGa2a92ca0f [2022-07-21 15:23:45,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf305301/75357659aab54320ae387ece79cfa471 [2022-07-21 15:23:45,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 15:23:45,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 15:23:45,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 15:23:45,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 15:23:45,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 15:23:45,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:23:45" (1/1) ... [2022-07-21 15:23:45,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9bf103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:45, skipping insertion in model container [2022-07-21 15:23:45,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:23:45" (1/1) ... [2022-07-21 15:23:45,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 15:23:45,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 15:23:47,132 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-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2022-07-21 15:23:47,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 15:23:47,266 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 15:23:47,765 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-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2022-07-21 15:23:47,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 15:23:47,876 INFO L208 MainTranslator]: Completed translation [2022-07-21 15:23:47,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47 WrapperNode [2022-07-21 15:23:47,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 15:23:47,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 15:23:47,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 15:23:47,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 15:23:47,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (1/1) ... [2022-07-21 15:23:48,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (1/1) ... [2022-07-21 15:23:48,294 INFO L137 Inliner]: procedures = 273, calls = 4073, calls flagged for inlining = 105, calls inlined = 96, statements flattened = 9059 [2022-07-21 15:23:48,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 15:23:48,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 15:23:48,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 15:23:48,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 15:23:48,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (1/1) ... [2022-07-21 15:23:48,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (1/1) ... [2022-07-21 15:23:48,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (1/1) ... [2022-07-21 15:23:48,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (1/1) ... [2022-07-21 15:23:48,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (1/1) ... [2022-07-21 15:23:48,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (1/1) ... [2022-07-21 15:23:48,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (1/1) ... [2022-07-21 15:23:48,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 15:23:48,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 15:23:48,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 15:23:48,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 15:23:48,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (1/1) ... [2022-07-21 15:23:48,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 15:23:48,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 15:23:48,760 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) [2022-07-21 15:23:48,781 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 [2022-07-21 15:23:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-21 15:23:48,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-21 15:23:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2022-07-21 15:23:48,800 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2022-07-21 15:23:48,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-21 15:23:48,800 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-21 15:23:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-21 15:23:48,801 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-21 15:23:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-07-21 15:23:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 15:23:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 15:23:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2022-07-21 15:23:48,802 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2022-07-21 15:23:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-07-21 15:23:48,802 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-07-21 15:23:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-07-21 15:23:48,802 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-07-21 15:23:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-21 15:23:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-21 15:23:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-07-21 15:23:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-07-21 15:23:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2022-07-21 15:23:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2022-07-21 15:23:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 15:23:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 15:23:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2022-07-21 15:23:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2022-07-21 15:23:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2022-07-21 15:23:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2022-07-21 15:23:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-07-21 15:23:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-07-21 15:23:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-07-21 15:23:48,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-07-21 15:23:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 15:23:48,805 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 15:23:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 15:23:48,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 15:23:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-21 15:23:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-21 15:23:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2022-07-21 15:23:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2022-07-21 15:23:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-07-21 15:23:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-07-21 15:23:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-21 15:23:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-21 15:23:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2022-07-21 15:23:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2022-07-21 15:23:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 15:23:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 15:23:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2022-07-21 15:23:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2022-07-21 15:23:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2022-07-21 15:23:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2022-07-21 15:23:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 15:23:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 15:23:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2022-07-21 15:23:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2022-07-21 15:23:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2022-07-21 15:23:48,810 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2022-07-21 15:23:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2022-07-21 15:23:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2022-07-21 15:23:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2022-07-21 15:23:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2022-07-21 15:23:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2022-07-21 15:23:48,812 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2022-07-21 15:23:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 15:23:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2022-07-21 15:23:48,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2022-07-21 15:23:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-21 15:23:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2022-07-21 15:23:48,812 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2022-07-21 15:23:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-07-21 15:23:48,813 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-07-21 15:23:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-07-21 15:23:48,813 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-07-21 15:23:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 15:23:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2022-07-21 15:23:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2022-07-21 15:23:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2022-07-21 15:23:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2022-07-21 15:23:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-21 15:23:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-21 15:23:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2022-07-21 15:23:48,815 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2022-07-21 15:23:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-07-21 15:23:48,815 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-07-21 15:23:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-07-21 15:23:48,815 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-07-21 15:23:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 15:23:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2022-07-21 15:23:48,816 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2022-07-21 15:23:48,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 15:23:48,816 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-21 15:23:48,816 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-21 15:23:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 15:23:48,817 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 15:23:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 15:23:48,817 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 15:23:48,818 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2022-07-21 15:23:48,818 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2022-07-21 15:23:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-21 15:23:48,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-21 15:23:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2022-07-21 15:23:48,819 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2022-07-21 15:23:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2022-07-21 15:23:48,819 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2022-07-21 15:23:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-21 15:23:48,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-21 15:23:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 15:23:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-21 15:23:48,820 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-21 15:23:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2022-07-21 15:23:48,821 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2022-07-21 15:23:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-07-21 15:23:48,821 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-07-21 15:23:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 15:23:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2022-07-21 15:23:48,822 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2022-07-21 15:23:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 15:23:48,824 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2022-07-21 15:23:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2022-07-21 15:23:48,824 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2022-07-21 15:23:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2022-07-21 15:23:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 15:23:48,826 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 15:23:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2022-07-21 15:23:48,827 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2022-07-21 15:23:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2022-07-21 15:23:48,832 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2022-07-21 15:23:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-07-21 15:23:48,832 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-07-21 15:23:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2022-07-21 15:23:48,832 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2022-07-21 15:23:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 15:23:48,833 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 15:23:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2022-07-21 15:23:48,833 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2022-07-21 15:23:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-07-21 15:23:48,833 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-07-21 15:23:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 15:23:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-21 15:23:48,834 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-21 15:23:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2022-07-21 15:23:48,834 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2022-07-21 15:23:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2022-07-21 15:23:48,834 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2022-07-21 15:23:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2022-07-21 15:23:48,834 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2022-07-21 15:23:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 15:23:48,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 15:23:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-07-21 15:23:48,835 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-07-21 15:23:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 15:23:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-07-21 15:23:48,835 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-07-21 15:23:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-07-21 15:23:48,835 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-07-21 15:23:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-21 15:23:48,836 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-21 15:23:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 15:23:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2022-07-21 15:23:48,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2022-07-21 15:23:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2022-07-21 15:23:48,836 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2022-07-21 15:23:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-07-21 15:23:48,836 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-07-21 15:23:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 15:23:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 15:23:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2022-07-21 15:23:48,837 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2022-07-21 15:23:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2022-07-21 15:23:48,837 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2022-07-21 15:23:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2022-07-21 15:23:48,837 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2022-07-21 15:23:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-21 15:23:48,838 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-21 15:23:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-07-21 15:23:48,838 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-07-21 15:23:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-07-21 15:23:48,838 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-07-21 15:23:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2022-07-21 15:23:48,838 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2022-07-21 15:23:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2022-07-21 15:23:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2022-07-21 15:23:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2022-07-21 15:23:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2022-07-21 15:23:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-21 15:23:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-21 15:23:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2022-07-21 15:23:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2022-07-21 15:23:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-07-21 15:23:48,840 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-07-21 15:23:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-07-21 15:23:48,840 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-07-21 15:23:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 15:23:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2022-07-21 15:23:48,840 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2022-07-21 15:23:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2022-07-21 15:23:48,840 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2022-07-21 15:23:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 15:23:48,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 15:23:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-21 15:23:48,841 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-21 15:23:49,941 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 15:23:49,944 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 15:24:02,590 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 15:24:02,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 15:24:02,629 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 15:24:02,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:24:02 BoogieIcfgContainer [2022-07-21 15:24:02,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 15:24:02,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 15:24:02,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 15:24:02,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 15:24:02,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:23:45" (1/3) ... [2022-07-21 15:24:02,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0851b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:24:02, skipping insertion in model container [2022-07-21 15:24:02,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:23:47" (2/3) ... [2022-07-21 15:24:02,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0851b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:24:02, skipping insertion in model container [2022-07-21 15:24:02,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:24:02" (3/3) ... [2022-07-21 15:24:02,643 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-07-21 15:24:02,656 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 15:24:02,657 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 15:24:02,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 15:24:02,779 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@74b06377, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70fea401 [2022-07-21 15:24:02,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 15:24:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 3078 states, 2381 states have (on average 1.4708105837883243) internal successors, (3502), 2407 states have internal predecessors, (3502), 603 states have call successors, (603), 92 states have call predecessors, (603), 92 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) [2022-07-21 15:24:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 15:24:02,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:24:02,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:24:02,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:24:02,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:24:02,805 INFO L85 PathProgramCache]: Analyzing trace with hash -767786273, now seen corresponding path program 1 times [2022-07-21 15:24:02,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:24:02,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277445063] [2022-07-21 15:24:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:24:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:24:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:03,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:24:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:24:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:24:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:03,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:24:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 15:24:03,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:24:03,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277445063] [2022-07-21 15:24:03,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277445063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:24:03,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:24:03,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 15:24:03,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264883777] [2022-07-21 15:24:03,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:24:03,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 15:24:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:24:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 15:24:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 15:24:03,433 INFO L87 Difference]: Start difference. First operand has 3078 states, 2381 states have (on average 1.4708105837883243) internal successors, (3502), 2407 states have internal predecessors, (3502), 603 states have call successors, (603), 92 states have call predecessors, (603), 92 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 15:24:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:24:06,606 INFO L93 Difference]: Finished difference Result 6337 states and 10000 transitions. [2022-07-21 15:24:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 15:24:06,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-07-21 15:24:06,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:24:06,662 INFO L225 Difference]: With dead ends: 6337 [2022-07-21 15:24:06,662 INFO L226 Difference]: Without dead ends: 3256 [2022-07-21 15:24:06,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 15:24:06,701 INFO L413 NwaCegarLoop]: 4564 mSDtfsCounter, 5099 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 7479 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 15:24:06,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5473 Valid, 7479 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 15:24:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2022-07-21 15:24:06,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3067. [2022-07-21 15:24:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 2372 states have (on average 1.4582630691399663) internal successors, (3459), 2396 states have internal predecessors, (3459), 603 states have call successors, (603), 92 states have call predecessors, (603), 91 states have return successors, (595), 592 states have call predecessors, (595), 595 states have call successors, (595) [2022-07-21 15:24:06,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4657 transitions. [2022-07-21 15:24:06,941 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4657 transitions. Word has length 38 [2022-07-21 15:24:06,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:24:06,941 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 4657 transitions. [2022-07-21 15:24:06,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 15:24:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4657 transitions. [2022-07-21 15:24:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 15:24:06,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:24:06,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:24:06,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 15:24:06,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:24:06,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:24:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash -66186399, now seen corresponding path program 1 times [2022-07-21 15:24:06,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:24:06,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033561702] [2022-07-21 15:24:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:24:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:24:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:24:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:24:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:24:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:07,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:24:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 15:24:07,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:24:07,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033561702] [2022-07-21 15:24:07,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033561702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:24:07,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:24:07,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 15:24:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523657336] [2022-07-21 15:24:07,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:24:07,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 15:24:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:24:07,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 15:24:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 15:24:07,146 INFO L87 Difference]: Start difference. First operand 3067 states and 4657 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 15:24:10,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:24:10,097 INFO L93 Difference]: Finished difference Result 6316 states and 9662 transitions. [2022-07-21 15:24:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 15:24:10,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-07-21 15:24:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:24:10,126 INFO L225 Difference]: With dead ends: 6316 [2022-07-21 15:24:10,127 INFO L226 Difference]: Without dead ends: 3256 [2022-07-21 15:24:10,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 15:24:10,144 INFO L413 NwaCegarLoop]: 4550 mSDtfsCounter, 5073 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5446 SdHoareTripleChecker+Valid, 7461 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 15:24:10,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5446 Valid, 7461 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 15:24:10,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2022-07-21 15:24:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3067. [2022-07-21 15:24:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 2372 states have (on average 1.457841483979764) internal successors, (3458), 2396 states have internal predecessors, (3458), 603 states have call successors, (603), 92 states have call predecessors, (603), 91 states have return successors, (595), 592 states have call predecessors, (595), 595 states have call successors, (595) [2022-07-21 15:24:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4656 transitions. [2022-07-21 15:24:10,274 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4656 transitions. Word has length 38 [2022-07-21 15:24:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:24:10,275 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 4656 transitions. [2022-07-21 15:24:10,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 15:24:10,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4656 transitions. [2022-07-21 15:24:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 15:24:10,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:24:10,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:24:10,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 15:24:10,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:24:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:24:10,279 INFO L85 PathProgramCache]: Analyzing trace with hash -43554145, now seen corresponding path program 1 times [2022-07-21 15:24:10,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:24:10,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286638469] [2022-07-21 15:24:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:24:10,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:24:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:24:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:10,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:24:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:24:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:24:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 15:24:10,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:24:10,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286638469] [2022-07-21 15:24:10,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286638469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:24:10,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:24:10,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 15:24:10,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045872890] [2022-07-21 15:24:10,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:24:10,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 15:24:10,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:24:10,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 15:24:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 15:24:10,473 INFO L87 Difference]: Start difference. First operand 3067 states and 4656 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 15:24:13,749 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 [] [2022-07-21 15:24:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:24:18,742 INFO L93 Difference]: Finished difference Result 9477 states and 14530 transitions. [2022-07-21 15:24:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 15:24:18,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-07-21 15:24:18,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:24:18,786 INFO L225 Difference]: With dead ends: 9477 [2022-07-21 15:24:18,786 INFO L226 Difference]: Without dead ends: 6418 [2022-07-21 15:24:18,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 15:24:18,803 INFO L413 NwaCegarLoop]: 5063 mSDtfsCounter, 5693 mSDsluCounter, 6791 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 1608 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6151 SdHoareTripleChecker+Valid, 11854 SdHoareTripleChecker+Invalid, 3725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1608 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-21 15:24:18,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6151 Valid, 11854 Invalid, 3725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1608 Valid, 2116 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-07-21 15:24:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2022-07-21 15:24:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6023. [2022-07-21 15:24:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6023 states, 4668 states have (on average 1.459083119108826) internal successors, (6811), 4705 states have internal predecessors, (6811), 1174 states have call successors, (1174), 181 states have call predecessors, (1174), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2022-07-21 15:24:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 9151 transitions. [2022-07-21 15:24:19,056 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 9151 transitions. Word has length 38 [2022-07-21 15:24:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:24:19,057 INFO L495 AbstractCegarLoop]: Abstraction has 6023 states and 9151 transitions. [2022-07-21 15:24:19,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 15:24:19,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 9151 transitions. [2022-07-21 15:24:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 15:24:19,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:24:19,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:24:19,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 15:24:19,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:24:19,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:24:19,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1342649249, now seen corresponding path program 1 times [2022-07-21 15:24:19,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:24:19,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196789651] [2022-07-21 15:24:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:24:19,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:24:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:24:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:24:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:24:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:19,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:24:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 15:24:19,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:24:19,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196789651] [2022-07-21 15:24:19,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196789651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:24:19,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:24:19,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 15:24:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947602698] [2022-07-21 15:24:19,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:24:19,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 15:24:19,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:24:19,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 15:24:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 15:24:19,267 INFO L87 Difference]: Start difference. First operand 6023 states and 9151 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 15:24:25,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:24:25,640 INFO L93 Difference]: Finished difference Result 19256 states and 30210 transitions. [2022-07-21 15:24:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 15:24:25,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2022-07-21 15:24:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:24:25,737 INFO L225 Difference]: With dead ends: 19256 [2022-07-21 15:24:25,737 INFO L226 Difference]: Without dead ends: 13273 [2022-07-21 15:24:25,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 15:24:25,777 INFO L413 NwaCegarLoop]: 7236 mSDtfsCounter, 5094 mSDsluCounter, 14284 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 1431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5685 SdHoareTripleChecker+Valid, 21520 SdHoareTripleChecker+Invalid, 4836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1431 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-21 15:24:25,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5685 Valid, 21520 Invalid, 4836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1431 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-21 15:24:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13273 states. [2022-07-21 15:24:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13273 to 6025. [2022-07-21 15:24:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6025 states, 4670 states have (on average 1.4588865096359742) internal successors, (6813), 4707 states have internal predecessors, (6813), 1174 states have call successors, (1174), 181 states have call predecessors, (1174), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2022-07-21 15:24:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6025 states to 6025 states and 9153 transitions. [2022-07-21 15:24:26,217 INFO L78 Accepts]: Start accepts. Automaton has 6025 states and 9153 transitions. Word has length 38 [2022-07-21 15:24:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:24:26,217 INFO L495 AbstractCegarLoop]: Abstraction has 6025 states and 9153 transitions. [2022-07-21 15:24:26,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 15:24:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 6025 states and 9153 transitions. [2022-07-21 15:24:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 15:24:26,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:24:26,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:24:26,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 15:24:26,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:24:26,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:24:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2014242960, now seen corresponding path program 1 times [2022-07-21 15:24:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:24:26,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748418995] [2022-07-21 15:24:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:24:26,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:24:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:24:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:26,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:24:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:26,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:24:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:26,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:24:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:24:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 15:24:26,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:24:26,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748418995] [2022-07-21 15:24:26,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748418995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:24:26,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:24:26,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 15:24:26,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820398220] [2022-07-21 15:24:26,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:24:26,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 15:24:26,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:24:26,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 15:24:26,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 15:24:26,425 INFO L87 Difference]: Start difference. First operand 6025 states and 9153 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 15:24:29,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:24:29,220 INFO L93 Difference]: Finished difference Result 6405 states and 9867 transitions. [2022-07-21 15:24:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 15:24:29,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2022-07-21 15:24:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:24:29,261 INFO L225 Difference]: With dead ends: 6405 [2022-07-21 15:24:29,261 INFO L226 Difference]: Without dead ends: 6402 [2022-07-21 15:24:29,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 15:24:29,269 INFO L413 NwaCegarLoop]: 4543 mSDtfsCounter, 5055 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 7448 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 15:24:29,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5429 Valid, 7448 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 15:24:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2022-07-21 15:24:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 6024. [2022-07-21 15:24:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 4670 states have (on average 1.4586723768736616) internal successors, (6812), 4706 states have internal predecessors, (6812), 1173 states have call successors, (1173), 181 states have call predecessors, (1173), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2022-07-21 15:24:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 9151 transitions. [2022-07-21 15:24:29,534 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 9151 transitions. Word has length 43 [2022-07-21 15:24:29,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:24:29,536 INFO L495 AbstractCegarLoop]: Abstraction has 6024 states and 9151 transitions. [2022-07-21 15:24:29,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 15:24:29,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 9151 transitions. [2022-07-21 15:24:29,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 15:24:29,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:24:29,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:24:29,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 15:24:29,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:24:29,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:24:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1981866054, now seen corresponding path program 1 times [2022-07-21 15:24:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:24:29,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039810053] [2022-07-21 15:24:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:24:29,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:24:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:29,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:24:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:29,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:24:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:29,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:24:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:24:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:24:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 15:24:29,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:24:29,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039810053] [2022-07-21 15:24:29,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039810053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:24:29,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:24:29,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 15:24:29,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698986905] [2022-07-21 15:24:29,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:24:29,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 15:24:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:24:29,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 15:24:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 15:24:29,755 INFO L87 Difference]: Start difference. First operand 6024 states and 9151 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 15:24:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:24:34,630 INFO L93 Difference]: Finished difference Result 18692 states and 28709 transitions. [2022-07-21 15:24:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 15:24:34,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2022-07-21 15:24:34,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:24:34,722 INFO L225 Difference]: With dead ends: 18692 [2022-07-21 15:24:34,723 INFO L226 Difference]: Without dead ends: 12712 [2022-07-21 15:24:34,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 15:24:34,758 INFO L413 NwaCegarLoop]: 6916 mSDtfsCounter, 5566 mSDsluCounter, 8222 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 1394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6029 SdHoareTripleChecker+Valid, 15138 SdHoareTripleChecker+Invalid, 3545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1394 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-21 15:24:34,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6029 Valid, 15138 Invalid, 3545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1394 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-21 15:24:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2022-07-21 15:24:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 11937. [2022-07-21 15:24:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11937 states, 9271 states have (on average 1.460468126415705) internal successors, (13540), 9342 states have internal predecessors, (13540), 2309 states have call successors, (2309), 358 states have call predecessors, (2309), 356 states have return successors, (2310), 2282 states have call predecessors, (2310), 2298 states have call successors, (2310) [2022-07-21 15:24:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11937 states to 11937 states and 18159 transitions. [2022-07-21 15:24:35,272 INFO L78 Accepts]: Start accepts. Automaton has 11937 states and 18159 transitions. Word has length 44 [2022-07-21 15:24:35,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:24:35,272 INFO L495 AbstractCegarLoop]: Abstraction has 11937 states and 18159 transitions. [2022-07-21 15:24:35,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 15:24:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 11937 states and 18159 transitions. [2022-07-21 15:24:35,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 15:24:35,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:24:35,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:24:35,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 15:24:35,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:24:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:24:35,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1307198771, now seen corresponding path program 1 times [2022-07-21 15:24:35,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:24:35,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145799094] [2022-07-21 15:24:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:24:35,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:24:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:24:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:24:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:24:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:24:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:35,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:24:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 15:24:35,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:24:35,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145799094] [2022-07-21 15:24:35,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145799094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:24:35,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:24:35,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 15:24:35,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105137651] [2022-07-21 15:24:35,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:24:35,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 15:24:35,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:24:35,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 15:24:35,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 15:24:35,414 INFO L87 Difference]: Start difference. First operand 11937 states and 18159 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 15:24:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:24:38,279 INFO L93 Difference]: Finished difference Result 12695 states and 19585 transitions. [2022-07-21 15:24:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 15:24:38,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-07-21 15:24:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:24:38,352 INFO L225 Difference]: With dead ends: 12695 [2022-07-21 15:24:38,353 INFO L226 Difference]: Without dead ends: 12692 [2022-07-21 15:24:38,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 15:24:38,366 INFO L413 NwaCegarLoop]: 4543 mSDtfsCounter, 5051 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5423 SdHoareTripleChecker+Valid, 7449 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1011 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 15:24:38,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5423 Valid, 7449 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 15:24:38,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12692 states. [2022-07-21 15:24:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12692 to 11936. [2022-07-21 15:24:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11936 states, 9271 states have (on average 1.4603602631862798) internal successors, (13539), 9341 states have internal predecessors, (13539), 2308 states have call successors, (2308), 358 states have call predecessors, (2308), 356 states have return successors, (2310), 2282 states have call predecessors, (2310), 2298 states have call successors, (2310) [2022-07-21 15:24:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11936 states to 11936 states and 18157 transitions. [2022-07-21 15:24:38,858 INFO L78 Accepts]: Start accepts. Automaton has 11936 states and 18157 transitions. Word has length 45 [2022-07-21 15:24:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:24:38,860 INFO L495 AbstractCegarLoop]: Abstraction has 11936 states and 18157 transitions. [2022-07-21 15:24:38,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 15:24:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11936 states and 18157 transitions. [2022-07-21 15:24:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 15:24:38,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:24:38,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:24:38,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 15:24:38,862 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:24:38,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:24:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1867354345, now seen corresponding path program 1 times [2022-07-21 15:24:38,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:24:38,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575155045] [2022-07-21 15:24:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:24:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:24:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:39,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:24:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:24:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:24:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:24:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:24:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 15:24:39,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:24:39,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575155045] [2022-07-21 15:24:39,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575155045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:24:39,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:24:39,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 15:24:39,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226217748] [2022-07-21 15:24:39,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:24:39,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 15:24:39,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:24:39,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 15:24:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 15:24:39,054 INFO L87 Difference]: Start difference. First operand 11936 states and 18157 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 15:24:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:24:43,547 INFO L93 Difference]: Finished difference Result 18312 states and 27746 transitions. [2022-07-21 15:24:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 15:24:43,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-07-21 15:24:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:24:43,655 INFO L225 Difference]: With dead ends: 18312 [2022-07-21 15:24:43,655 INFO L226 Difference]: Without dead ends: 18242 [2022-07-21 15:24:43,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 15:24:43,675 INFO L413 NwaCegarLoop]: 4738 mSDtfsCounter, 3920 mSDsluCounter, 5875 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4224 SdHoareTripleChecker+Valid, 10613 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1276 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-21 15:24:43,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4224 Valid, 10613 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1276 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-21 15:24:43,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18242 states. [2022-07-21 15:24:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18242 to 16860. [2022-07-21 15:24:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16860 states, 12928 states have (on average 1.437654702970297) internal successors, (18586), 13020 states have internal predecessors, (18586), 3310 states have call successors, (3310), 623 states have call predecessors, (3310), 621 states have return successors, (3314), 3283 states have call predecessors, (3314), 3302 states have call successors, (3314) [2022-07-21 15:24:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16860 states to 16860 states and 25210 transitions. [2022-07-21 15:24:44,460 INFO L78 Accepts]: Start accepts. Automaton has 16860 states and 25210 transitions. Word has length 46 [2022-07-21 15:24:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:24:44,460 INFO L495 AbstractCegarLoop]: Abstraction has 16860 states and 25210 transitions. [2022-07-21 15:24:44,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 15:24:44,461 INFO L276 IsEmpty]: Start isEmpty. Operand 16860 states and 25210 transitions. [2022-07-21 15:24:44,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 15:24:44,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:24:44,464 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:24:44,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 15:24:44,465 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:24:44,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:24:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash -545678483, now seen corresponding path program 1 times [2022-07-21 15:24:44,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:24:44,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073995041] [2022-07-21 15:24:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:24:44,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:24:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:24:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:24:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:24:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:24:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:24:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 15:24:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 15:24:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 15:24:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 15:24:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 15:24:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 15:24:44,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:24:44,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073995041] [2022-07-21 15:24:44,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073995041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:24:44,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:24:44,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 15:24:44,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739994563] [2022-07-21 15:24:44,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:24:44,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 15:24:44,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:24:44,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 15:24:44,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 15:24:44,657 INFO L87 Difference]: Start difference. First operand 16860 states and 25210 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 15:24:52,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:24:52,295 INFO L93 Difference]: Finished difference Result 37195 states and 56325 transitions. [2022-07-21 15:24:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 15:24:52,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2022-07-21 15:24:52,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:24:52,428 INFO L225 Difference]: With dead ends: 37195 [2022-07-21 15:24:52,428 INFO L226 Difference]: Without dead ends: 20390 [2022-07-21 15:24:52,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 15:24:52,522 INFO L413 NwaCegarLoop]: 4368 mSDtfsCounter, 3940 mSDsluCounter, 4155 mSDsCounter, 0 mSdLazyCounter, 5891 mSolverCounterSat, 1742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4454 SdHoareTripleChecker+Valid, 8523 SdHoareTripleChecker+Invalid, 7633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1742 IncrementalHoareTripleChecker+Valid, 5891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-21 15:24:52,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4454 Valid, 8523 Invalid, 7633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1742 Valid, 5891 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-21 15:24:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20390 states. [2022-07-21 15:24:53,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20390 to 18332. [2022-07-21 15:24:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18332 states, 14142 states have (on average 1.4446330080610945) internal successors, (20430), 14246 states have internal predecessors, (20430), 3568 states have call successors, (3568), 623 states have call predecessors, (3568), 621 states have return successors, (3576), 3537 states have call predecessors, (3576), 3560 states have call successors, (3576) [2022-07-21 15:24:53,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18332 states to 18332 states and 27574 transitions. [2022-07-21 15:24:53,602 INFO L78 Accepts]: Start accepts. Automaton has 18332 states and 27574 transitions. Word has length 85 [2022-07-21 15:24:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:24:53,602 INFO L495 AbstractCegarLoop]: Abstraction has 18332 states and 27574 transitions. [2022-07-21 15:24:53,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 15:24:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 18332 states and 27574 transitions. [2022-07-21 15:24:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 15:24:53,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:24:53,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:24:53,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 15:24:53,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:24:53,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:24:53,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1631405334, now seen corresponding path program 1 times [2022-07-21 15:24:53,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:24:53,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488362505] [2022-07-21 15:24:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:24:53,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:24:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:24:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:24:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:24:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:24:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:24:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 15:24:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 15:24:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 15:24:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 15:24:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 15:24:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 15:24:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 15:24:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:24:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 15:24:53,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:24:53,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488362505] [2022-07-21 15:24:53,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488362505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:24:53,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:24:53,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 15:24:53,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895175873] [2022-07-21 15:24:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:24:53,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 15:24:53,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:24:53,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 15:24:53,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 15:24:53,904 INFO L87 Difference]: Start difference. First operand 18332 states and 27574 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 15:25:03,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:25:03,024 INFO L93 Difference]: Finished difference Result 19716 states and 30043 transitions. [2022-07-21 15:25:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 15:25:03,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2022-07-21 15:25:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:25:03,151 INFO L225 Difference]: With dead ends: 19716 [2022-07-21 15:25:03,151 INFO L226 Difference]: Without dead ends: 19713 [2022-07-21 15:25:03,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 15:25:03,173 INFO L413 NwaCegarLoop]: 5603 mSDtfsCounter, 5947 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 6273 mSolverCounterSat, 2925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6282 SdHoareTripleChecker+Valid, 9239 SdHoareTripleChecker+Invalid, 9198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2925 IncrementalHoareTripleChecker+Valid, 6273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-07-21 15:25:03,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6282 Valid, 9239 Invalid, 9198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2925 Valid, 6273 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-07-21 15:25:03,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19713 states. [2022-07-21 15:25:03,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 18331. [2022-07-21 15:25:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18331 states, 14142 states have (on average 1.4443501626361193) internal successors, (20426), 14245 states have internal predecessors, (20426), 3567 states have call successors, (3567), 623 states have call predecessors, (3567), 621 states have return successors, (3576), 3537 states have call predecessors, (3576), 3560 states have call successors, (3576) [2022-07-21 15:25:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 27569 transitions. [2022-07-21 15:25:04,141 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 27569 transitions. Word has length 88 [2022-07-21 15:25:04,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:25:04,141 INFO L495 AbstractCegarLoop]: Abstraction has 18331 states and 27569 transitions. [2022-07-21 15:25:04,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 15:25:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 27569 transitions. [2022-07-21 15:25:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 15:25:04,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:25:04,145 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:25:04,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 15:25:04,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:25:04,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:25:04,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1002467120, now seen corresponding path program 1 times [2022-07-21 15:25:04,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:25:04,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11479173] [2022-07-21 15:25:04,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:25:04,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:25:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:25:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:25:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:25:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:25:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:25:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 15:25:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 15:25:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 15:25:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 15:25:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 15:25:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 15:25:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 15:25:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 15:25:04,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:25:04,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11479173] [2022-07-21 15:25:04,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11479173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:25:04,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:25:04,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 15:25:04,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346239237] [2022-07-21 15:25:04,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:25:04,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 15:25:04,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:25:04,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 15:25:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 15:25:04,342 INFO L87 Difference]: Start difference. First operand 18331 states and 27569 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 15:25:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:25:17,102 INFO L93 Difference]: Finished difference Result 37985 states and 57538 transitions. [2022-07-21 15:25:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 15:25:17,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-07-21 15:25:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:25:17,210 INFO L225 Difference]: With dead ends: 37985 [2022-07-21 15:25:17,210 INFO L226 Difference]: Without dead ends: 19709 [2022-07-21 15:25:17,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-21 15:25:17,287 INFO L413 NwaCegarLoop]: 7230 mSDtfsCounter, 9333 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 8845 mSolverCounterSat, 5224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9567 SdHoareTripleChecker+Valid, 15334 SdHoareTripleChecker+Invalid, 14069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5224 IncrementalHoareTripleChecker+Valid, 8845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-07-21 15:25:17,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9567 Valid, 15334 Invalid, 14069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5224 Valid, 8845 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-07-21 15:25:17,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19709 states. [2022-07-21 15:25:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19709 to 18287. [2022-07-21 15:25:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18287 states, 14118 states have (on average 1.4445388865278368) internal successors, (20394), 14222 states have internal predecessors, (20394), 3549 states have call successors, (3549), 618 states have call predecessors, (3549), 619 states have return successors, (3547), 3521 states have call predecessors, (3547), 3539 states have call successors, (3547) [2022-07-21 15:25:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18287 states to 18287 states and 27490 transitions. [2022-07-21 15:25:18,154 INFO L78 Accepts]: Start accepts. Automaton has 18287 states and 27490 transitions. Word has length 98 [2022-07-21 15:25:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:25:18,155 INFO L495 AbstractCegarLoop]: Abstraction has 18287 states and 27490 transitions. [2022-07-21 15:25:18,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 15:25:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 18287 states and 27490 transitions. [2022-07-21 15:25:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 15:25:18,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:25:18,158 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:25:18,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 15:25:18,159 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:25:18,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:25:18,159 INFO L85 PathProgramCache]: Analyzing trace with hash 593642895, now seen corresponding path program 1 times [2022-07-21 15:25:18,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:25:18,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966534834] [2022-07-21 15:25:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:25:18,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:25:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:25:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:25:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:25:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:25:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:25:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 15:25:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 15:25:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 15:25:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 15:25:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 15:25:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 15:25:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 15:25:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 15:25:18,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:25:18,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966534834] [2022-07-21 15:25:18,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966534834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:25:18,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:25:18,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 15:25:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813839580] [2022-07-21 15:25:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:25:18,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 15:25:18,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:25:18,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 15:25:18,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 15:25:18,419 INFO L87 Difference]: Start difference. First operand 18287 states and 27490 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 15:25:33,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:25:33,265 INFO L93 Difference]: Finished difference Result 24849 states and 38058 transitions. [2022-07-21 15:25:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 15:25:33,266 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-07-21 15:25:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:25:33,336 INFO L225 Difference]: With dead ends: 24849 [2022-07-21 15:25:33,337 INFO L226 Difference]: Without dead ends: 21136 [2022-07-21 15:25:33,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-21 15:25:33,358 INFO L413 NwaCegarLoop]: 5585 mSDtfsCounter, 6929 mSDsluCounter, 16447 mSDsCounter, 0 mSdLazyCounter, 16003 mSolverCounterSat, 3367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6932 SdHoareTripleChecker+Valid, 22032 SdHoareTripleChecker+Invalid, 19370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3367 IncrementalHoareTripleChecker+Valid, 16003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-07-21 15:25:33,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6932 Valid, 22032 Invalid, 19370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3367 Valid, 16003 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2022-07-21 15:25:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2022-07-21 15:25:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 16117. [2022-07-21 15:25:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16117 states, 12356 states have (on average 1.4326642926513435) internal successors, (17702), 12452 states have internal predecessors, (17702), 3183 states have call successors, (3183), 576 states have call predecessors, (3183), 577 states have return successors, (3183), 3161 states have call predecessors, (3183), 3175 states have call successors, (3183) [2022-07-21 15:25:34,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16117 states to 16117 states and 24068 transitions. [2022-07-21 15:25:34,105 INFO L78 Accepts]: Start accepts. Automaton has 16117 states and 24068 transitions. Word has length 98 [2022-07-21 15:25:34,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:25:34,106 INFO L495 AbstractCegarLoop]: Abstraction has 16117 states and 24068 transitions. [2022-07-21 15:25:34,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 15:25:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 16117 states and 24068 transitions. [2022-07-21 15:25:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 15:25:34,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:25:34,114 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:25:34,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 15:25:34,114 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:25:34,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:25:34,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1640846850, now seen corresponding path program 1 times [2022-07-21 15:25:34,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:25:34,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796443248] [2022-07-21 15:25:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:25:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:25:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:25:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:25:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:25:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:25:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:25:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 15:25:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 15:25:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 15:25:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 15:25:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 15:25:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 15:25:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 15:25:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 15:25:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 15:25:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 15:25:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 15:25:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 15:25:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 15:25:34,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:25:34,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796443248] [2022-07-21 15:25:34,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796443248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:25:34,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:25:34,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 15:25:34,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691219077] [2022-07-21 15:25:34,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:25:34,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 15:25:34,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:25:34,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 15:25:34,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 15:25:34,364 INFO L87 Difference]: Start difference. First operand 16117 states and 24068 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 15:25:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:25:49,434 INFO L93 Difference]: Finished difference Result 26996 states and 41029 transitions. [2022-07-21 15:25:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 15:25:49,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2022-07-21 15:25:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:25:49,517 INFO L225 Difference]: With dead ends: 26996 [2022-07-21 15:25:49,517 INFO L226 Difference]: Without dead ends: 21120 [2022-07-21 15:25:49,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-21 15:25:49,543 INFO L413 NwaCegarLoop]: 5573 mSDtfsCounter, 7857 mSDsluCounter, 15493 mSDsCounter, 0 mSdLazyCounter, 15926 mSolverCounterSat, 3454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7860 SdHoareTripleChecker+Valid, 21066 SdHoareTripleChecker+Invalid, 19380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3454 IncrementalHoareTripleChecker+Valid, 15926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-07-21 15:25:49,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7860 Valid, 21066 Invalid, 19380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3454 Valid, 15926 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2022-07-21 15:25:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21120 states. [2022-07-21 15:25:50,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21120 to 16101. [2022-07-21 15:25:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16101 states, 12348 states have (on average 1.432620667314545) internal successors, (17690), 12444 states have internal predecessors, (17690), 3175 states have call successors, (3175), 576 states have call predecessors, (3175), 577 states have return successors, (3175), 3153 states have call predecessors, (3175), 3167 states have call successors, (3175) [2022-07-21 15:25:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16101 states to 16101 states and 24040 transitions. [2022-07-21 15:25:50,387 INFO L78 Accepts]: Start accepts. Automaton has 16101 states and 24040 transitions. Word has length 126 [2022-07-21 15:25:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:25:50,388 INFO L495 AbstractCegarLoop]: Abstraction has 16101 states and 24040 transitions. [2022-07-21 15:25:50,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 15:25:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 16101 states and 24040 transitions. [2022-07-21 15:25:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 15:25:50,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:25:50,402 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:25:50,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 15:25:50,403 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:25:50,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:25:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash 94627519, now seen corresponding path program 1 times [2022-07-21 15:25:50,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:25:50,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97270142] [2022-07-21 15:25:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:25:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:25:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:25:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:25:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:25:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:25:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:25:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 15:25:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 15:25:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 15:25:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 15:25:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 15:25:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 15:25:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 15:25:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 15:25:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 15:25:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 15:25:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 15:25:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 15:25:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 15:25:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 15:25:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 15:25:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:25:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 15:25:50,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:25:50,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97270142] [2022-07-21 15:25:50,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97270142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:25:50,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:25:50,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 15:25:50,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253705318] [2022-07-21 15:25:50,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:25:50,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 15:25:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:25:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 15:25:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 15:25:50,692 INFO L87 Difference]: Start difference. First operand 16101 states and 24040 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 6 states have internal predecessors, (100), 4 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 15:26:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:26:04,706 INFO L93 Difference]: Finished difference Result 33359 states and 50181 transitions. [2022-07-21 15:26:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 15:26:04,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 6 states have internal predecessors, (100), 4 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 146 [2022-07-21 15:26:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:26:04,786 INFO L225 Difference]: With dead ends: 33359 [2022-07-21 15:26:04,787 INFO L226 Difference]: Without dead ends: 17279 [2022-07-21 15:26:04,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-07-21 15:26:04,838 INFO L413 NwaCegarLoop]: 4307 mSDtfsCounter, 5140 mSDsluCounter, 11093 mSDsCounter, 0 mSdLazyCounter, 15088 mSolverCounterSat, 3024 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5140 SdHoareTripleChecker+Valid, 15400 SdHoareTripleChecker+Invalid, 18112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3024 IncrementalHoareTripleChecker+Valid, 15088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-07-21 15:26:04,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5140 Valid, 15400 Invalid, 18112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3024 Valid, 15088 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-07-21 15:26:04,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17279 states. [2022-07-21 15:26:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17279 to 16095. [2022-07-21 15:26:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16095 states, 12346 states have (on average 1.4317187753118419) internal successors, (17676), 12442 states have internal predecessors, (17676), 3171 states have call successors, (3171), 576 states have call predecessors, (3171), 577 states have return successors, (3171), 3149 states have call predecessors, (3171), 3163 states have call successors, (3171) [2022-07-21 15:26:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16095 states to 16095 states and 24018 transitions. [2022-07-21 15:26:05,498 INFO L78 Accepts]: Start accepts. Automaton has 16095 states and 24018 transitions. Word has length 146 [2022-07-21 15:26:05,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:26:05,499 INFO L495 AbstractCegarLoop]: Abstraction has 16095 states and 24018 transitions. [2022-07-21 15:26:05,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 6 states have internal predecessors, (100), 4 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 15:26:05,499 INFO L276 IsEmpty]: Start isEmpty. Operand 16095 states and 24018 transitions. [2022-07-21 15:26:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 15:26:05,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:26:05,521 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:26:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 15:26:05,521 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:26:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:26:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1735475427, now seen corresponding path program 1 times [2022-07-21 15:26:05,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:26:05,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407314329] [2022-07-21 15:26:05,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:26:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:26:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:26:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:26:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:26:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:26:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:26:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 15:26:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 15:26:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 15:26:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 15:26:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 15:26:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 15:26:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 15:26:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 15:26:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 15:26:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 15:26:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 15:26:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 15:26:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 15:26:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 15:26:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 15:26:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 15:26:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-21 15:26:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 15:26:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 15:26:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 15:26:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 15:26:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 15:26:05,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:26:05,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407314329] [2022-07-21 15:26:05,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407314329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:26:05,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:26:05,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 15:26:05,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844538720] [2022-07-21 15:26:05,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:26:05,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 15:26:05,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:26:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 15:26:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 15:26:05,853 INFO L87 Difference]: Start difference. First operand 16095 states and 24018 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (28), 6 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 15:26:13,413 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 [] [2022-07-21 15:26:24,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 15:26:27,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-21 15:26:31,796 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 [] [2022-07-21 15:26:32,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:26:32,877 INFO L93 Difference]: Finished difference Result 41019 states and 63688 transitions. [2022-07-21 15:26:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 15:26:32,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (28), 6 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 193 [2022-07-21 15:26:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:26:32,986 INFO L225 Difference]: With dead ends: 41019 [2022-07-21 15:26:32,987 INFO L226 Difference]: Without dead ends: 24979 [2022-07-21 15:26:33,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-07-21 15:26:33,041 INFO L413 NwaCegarLoop]: 5296 mSDtfsCounter, 9228 mSDsluCounter, 11926 mSDsCounter, 0 mSdLazyCounter, 13756 mSolverCounterSat, 5504 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9254 SdHoareTripleChecker+Valid, 17222 SdHoareTripleChecker+Invalid, 19263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5504 IncrementalHoareTripleChecker+Valid, 13756 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2022-07-21 15:26:33,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9254 Valid, 17222 Invalid, 19263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5504 Valid, 13756 Invalid, 3 Unknown, 0 Unchecked, 25.6s Time] [2022-07-21 15:26:33,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24979 states. [2022-07-21 15:26:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24979 to 16103. [2022-07-21 15:26:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16103 states, 12354 states have (on average 1.4314392099724786) internal successors, (17684), 12450 states have internal predecessors, (17684), 3171 states have call successors, (3171), 576 states have call predecessors, (3171), 577 states have return successors, (3171), 3149 states have call predecessors, (3171), 3163 states have call successors, (3171) [2022-07-21 15:26:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16103 states to 16103 states and 24026 transitions. [2022-07-21 15:26:33,848 INFO L78 Accepts]: Start accepts. Automaton has 16103 states and 24026 transitions. Word has length 193 [2022-07-21 15:26:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:26:33,848 INFO L495 AbstractCegarLoop]: Abstraction has 16103 states and 24026 transitions. [2022-07-21 15:26:33,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (28), 6 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 15:26:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand 16103 states and 24026 transitions. [2022-07-21 15:26:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-21 15:26:33,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:26:33,868 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:26:33,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 15:26:33,868 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:26:33,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:26:33,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2120771259, now seen corresponding path program 1 times [2022-07-21 15:26:33,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:26:33,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086428594] [2022-07-21 15:26:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:26:33,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:26:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:26:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:26:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:26:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:26:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:26:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 15:26:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 15:26:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 15:26:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 15:26:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 15:26:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 15:26:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 15:26:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 15:26:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 15:26:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 15:26:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 15:26:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 15:26:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 15:26:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 15:26:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 15:26:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 15:26:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 15:26:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 15:26:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 15:26:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 15:26:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 15:26:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:26:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 15:26:34,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:26:34,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086428594] [2022-07-21 15:26:34,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086428594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:26:34,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:26:34,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 15:26:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095145688] [2022-07-21 15:26:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:26:34,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 15:26:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:26:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 15:26:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-21 15:26:34,212 INFO L87 Difference]: Start difference. First operand 16103 states and 24026 transitions. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (28), 6 states have call predecessors, (28), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-07-21 15:26:43,283 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 [] [2022-07-21 15:26:50,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 15:27:00,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-21 15:27:03,177 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 [] [2022-07-21 15:27:04,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 15:27:04,652 INFO L93 Difference]: Finished difference Result 36027 states and 55309 transitions. [2022-07-21 15:27:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 15:27:04,653 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (28), 6 states have call predecessors, (28), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 194 [2022-07-21 15:27:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 15:27:04,747 INFO L225 Difference]: With dead ends: 36027 [2022-07-21 15:27:04,747 INFO L226 Difference]: Without dead ends: 19947 [2022-07-21 15:27:04,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-07-21 15:27:04,802 INFO L413 NwaCegarLoop]: 4170 mSDtfsCounter, 6663 mSDsluCounter, 13852 mSDsCounter, 0 mSdLazyCounter, 22010 mSolverCounterSat, 4785 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6664 SdHoareTripleChecker+Valid, 18022 SdHoareTripleChecker+Invalid, 26799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4785 IncrementalHoareTripleChecker+Valid, 22010 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2022-07-21 15:27:04,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6664 Valid, 18022 Invalid, 26799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4785 Valid, 22010 Invalid, 4 Unknown, 0 Unchecked, 29.0s Time] [2022-07-21 15:27:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19947 states. [2022-07-21 15:27:05,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19947 to 16117. [2022-07-21 15:27:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16117 states, 12362 states have (on average 1.4306746481151917) internal successors, (17686), 12458 states have internal predecessors, (17686), 3177 states have call successors, (3177), 576 states have call predecessors, (3177), 577 states have return successors, (3177), 3155 states have call predecessors, (3177), 3169 states have call successors, (3177) [2022-07-21 15:27:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16117 states to 16117 states and 24040 transitions. [2022-07-21 15:27:05,617 INFO L78 Accepts]: Start accepts. Automaton has 16117 states and 24040 transitions. Word has length 194 [2022-07-21 15:27:05,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 15:27:05,617 INFO L495 AbstractCegarLoop]: Abstraction has 16117 states and 24040 transitions. [2022-07-21 15:27:05,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (28), 6 states have call predecessors, (28), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-07-21 15:27:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 16117 states and 24040 transitions. [2022-07-21 15:27:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-21 15:27:05,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 15:27:05,657 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 15:27:05,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 15:27:05,657 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 15:27:05,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 15:27:05,658 INFO L85 PathProgramCache]: Analyzing trace with hash -807176600, now seen corresponding path program 1 times [2022-07-21 15:27:05,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 15:27:05,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893280760] [2022-07-21 15:27:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 15:27:05,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 15:27:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:27:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 15:27:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 15:27:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:27:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 15:27:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 15:27:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 15:27:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 15:27:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 15:27:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 15:27:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 15:27:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 15:27:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 15:27:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 15:27:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 15:27:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 15:27:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 15:27:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 15:27:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 15:27:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-21 15:27:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 15:27:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 15:27:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 15:27:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 15:27:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 15:27:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 15:27:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 15:27:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:05,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 15:27:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:06,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 15:27:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 15:27:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 15:27:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-21 15:27:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-21 15:27:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:06,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-21 15:27:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-21 15:27:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:06,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-21 15:27:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 15:27:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 15:27:06,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 15:27:06,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893280760] [2022-07-21 15:27:06,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893280760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 15:27:06,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 15:27:06,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 15:27:06,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299435904] [2022-07-21 15:27:06,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 15:27:06,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 15:27:06,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 15:27:06,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 15:27:06,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 15:27:06,048 INFO L87 Difference]: Start difference. First operand 16117 states and 24040 transitions. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (38), 7 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-07-21 15:27:12,792 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 [] [2022-07-21 15:27:23,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []