./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 791161d1 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-?-791161d [2022-07-23 04:07:44,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 04:07:44,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 04:07:45,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 04:07:45,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 04:07:45,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 04:07:45,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 04:07:45,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 04:07:45,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 04:07:45,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 04:07:45,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 04:07:45,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 04:07:45,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 04:07:45,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 04:07:45,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 04:07:45,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 04:07:45,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 04:07:45,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 04:07:45,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 04:07:45,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 04:07:45,045 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 04:07:45,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 04:07:45,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 04:07:45,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 04:07:45,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 04:07:45,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 04:07:45,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 04:07:45,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 04:07:45,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 04:07:45,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 04:07:45,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 04:07:45,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 04:07:45,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 04:07:45,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 04:07:45,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 04:07:45,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 04:07:45,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 04:07:45,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 04:07:45,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 04:07:45,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 04:07:45,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 04:07:45,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 04:07:45,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-23 04:07:45,077 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 04:07:45,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 04:07:45,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 04:07:45,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 04:07:45,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 04:07:45,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 04:07:45,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 04:07:45,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 04:07:45,079 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 04:07:45,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 04:07:45,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 04:07:45,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 04:07:45,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 04:07:45,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 04:07:45,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 04:07:45,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 04:07:45,081 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 04:07:45,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 04:07:45,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 04:07:45,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 04:07:45,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 04:07:45,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 04:07:45,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 04:07:45,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 04:07:45,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 04:07:45,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 04:07:45,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 04:07:45,082 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 04:07:45,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 04:07:45,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 04:07:45,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2022-07-23 04:07:45,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 04:07:45,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 04:07:45,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 04:07:45,286 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 04:07:45,287 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 04:07:45,288 INFO L432 ainManager$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 [2022-07-23 04:07:45,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c154d8b2/26743b5b49a049f5b9e5471b9d0b1055/FLAGb150d03c3 [2022-07-23 04:07:45,961 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 04:07:45,962 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 [2022-07-23 04:07:45,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c154d8b2/26743b5b49a049f5b9e5471b9d0b1055/FLAGb150d03c3 [2022-07-23 04:07:46,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c154d8b2/26743b5b49a049f5b9e5471b9d0b1055 [2022-07-23 04:07:46,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 04:07:46,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 04:07:46,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 04:07:46,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 04:07:46,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 04:07:46,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 04:07:46" (1/1) ... [2022-07-23 04:07:46,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5733b27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:46, skipping insertion in model container [2022-07-23 04:07:46,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 04:07:46" (1/1) ... [2022-07-23 04:07:46,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 04:07:46,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 04:07:48,154 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] [2022-07-23 04:07:48,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 04:07:48,301 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 04:07:48,711 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] [2022-07-23 04:07:48,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 04:07:48,785 INFO L208 MainTranslator]: Completed translation [2022-07-23 04:07:48,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48 WrapperNode [2022-07-23 04:07:48,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 04:07:48,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 04:07:48,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 04:07:48,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 04:07:48,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (1/1) ... [2022-07-23 04:07:48,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (1/1) ... [2022-07-23 04:07:49,100 INFO L137 Inliner]: procedures = 273, calls = 4073, calls flagged for inlining = 105, calls inlined = 96, statements flattened = 9059 [2022-07-23 04:07:49,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 04:07:49,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 04:07:49,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 04:07:49,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 04:07:49,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (1/1) ... [2022-07-23 04:07:49,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (1/1) ... [2022-07-23 04:07:49,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (1/1) ... [2022-07-23 04:07:49,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (1/1) ... [2022-07-23 04:07:49,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (1/1) ... [2022-07-23 04:07:49,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (1/1) ... [2022-07-23 04:07:49,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (1/1) ... [2022-07-23 04:07:49,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 04:07:49,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 04:07:49,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 04:07:49,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 04:07:49,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (1/1) ... [2022-07-23 04:07:49,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 04:07:49,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:07:49,539 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) [2022-07-23 04:07:49,555 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 [2022-07-23 04:07:49,570 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-23 04:07:49,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-23 04:07:49,570 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2022-07-23 04:07:49,570 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2022-07-23 04:07:49,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-23 04:07:49,570 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-23 04:07:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-23 04:07:49,571 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-23 04:07:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-07-23 04:07:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-23 04:07:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-23 04:07:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2022-07-23 04:07:49,571 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2022-07-23 04:07:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-07-23 04:07:49,572 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-07-23 04:07:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-07-23 04:07:49,572 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-07-23 04:07:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-23 04:07:49,572 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-23 04:07:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-07-23 04:07:49,572 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-07-23 04:07:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2022-07-23 04:07:49,573 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2022-07-23 04:07:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-23 04:07:49,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-23 04:07:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2022-07-23 04:07:49,573 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2022-07-23 04:07:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2022-07-23 04:07:49,573 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2022-07-23 04:07:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-07-23 04:07:49,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-07-23 04:07:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-07-23 04:07:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-07-23 04:07:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-23 04:07:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-23 04:07:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-23 04:07:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-23 04:07:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-23 04:07:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-23 04:07:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2022-07-23 04:07:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2022-07-23 04:07:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-07-23 04:07:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-07-23 04:07:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-23 04:07:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-23 04:07:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2022-07-23 04:07:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2022-07-23 04:07:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-23 04:07:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-23 04:07:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2022-07-23 04:07:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2022-07-23 04:07:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2022-07-23 04:07:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2022-07-23 04:07:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-23 04:07:49,577 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-23 04:07:49,577 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2022-07-23 04:07:49,577 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2022-07-23 04:07:49,578 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2022-07-23 04:07:49,578 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2022-07-23 04:07:49,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2022-07-23 04:07:49,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2022-07-23 04:07:49,578 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2022-07-23 04:07:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2022-07-23 04:07:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2022-07-23 04:07:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2022-07-23 04:07:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 04:07:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2022-07-23 04:07:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2022-07-23 04:07:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-23 04:07:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2022-07-23 04:07:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2022-07-23 04:07:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-07-23 04:07:49,580 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-07-23 04:07:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-07-23 04:07:49,580 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-07-23 04:07:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 04:07:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2022-07-23 04:07:49,581 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2022-07-23 04:07:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2022-07-23 04:07:49,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2022-07-23 04:07:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-23 04:07:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-23 04:07:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2022-07-23 04:07:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2022-07-23 04:07:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-07-23 04:07:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-07-23 04:07:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-07-23 04:07:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-07-23 04:07:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 04:07:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2022-07-23 04:07:49,583 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2022-07-23 04:07:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 04:07:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-23 04:07:49,583 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-23 04:07:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-23 04:07:49,584 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-23 04:07:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-23 04:07:49,584 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-23 04:07:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2022-07-23 04:07:49,585 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2022-07-23 04:07:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-23 04:07:49,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-23 04:07:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2022-07-23 04:07:49,586 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2022-07-23 04:07:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2022-07-23 04:07:49,586 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2022-07-23 04:07:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-23 04:07:49,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-23 04:07:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-23 04:07:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-23 04:07:49,587 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-23 04:07:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2022-07-23 04:07:49,587 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2022-07-23 04:07:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-07-23 04:07:49,587 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-07-23 04:07:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-23 04:07:49,587 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2022-07-23 04:07:49,588 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2022-07-23 04:07:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 04:07:49,590 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2022-07-23 04:07:49,590 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2022-07-23 04:07:49,590 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2022-07-23 04:07:49,590 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2022-07-23 04:07:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-23 04:07:49,592 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-23 04:07:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2022-07-23 04:07:49,592 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2022-07-23 04:07:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2022-07-23 04:07:49,596 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2022-07-23 04:07:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-07-23 04:07:49,596 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-07-23 04:07:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2022-07-23 04:07:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2022-07-23 04:07:49,597 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-23 04:07:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-23 04:07:49,597 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2022-07-23 04:07:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2022-07-23 04:07:49,597 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-07-23 04:07:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-07-23 04:07:49,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 04:07:49,597 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-23 04:07:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-23 04:07:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2022-07-23 04:07:49,598 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2022-07-23 04:07:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2022-07-23 04:07:49,598 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2022-07-23 04:07:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2022-07-23 04:07:49,598 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2022-07-23 04:07:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-23 04:07:49,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-23 04:07:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-07-23 04:07:49,598 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-07-23 04:07:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 04:07:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-07-23 04:07:49,599 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-07-23 04:07:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-07-23 04:07:49,599 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-07-23 04:07:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-23 04:07:49,599 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-23 04:07:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 04:07:49,599 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2022-07-23 04:07:49,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2022-07-23 04:07:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2022-07-23 04:07:49,600 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2022-07-23 04:07:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-07-23 04:07:49,600 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-07-23 04:07:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 04:07:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-23 04:07:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2022-07-23 04:07:49,600 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2022-07-23 04:07:49,600 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2022-07-23 04:07:49,600 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2022-07-23 04:07:49,601 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2022-07-23 04:07:49,601 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2022-07-23 04:07:49,601 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-23 04:07:49,601 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-23 04:07:49,601 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-07-23 04:07:49,601 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-07-23 04:07:49,601 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-07-23 04:07:49,601 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-07-23 04:07:49,602 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2022-07-23 04:07:49,602 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2022-07-23 04:07:49,602 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2022-07-23 04:07:49,602 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2022-07-23 04:07:49,602 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2022-07-23 04:07:49,602 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2022-07-23 04:07:49,602 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-23 04:07:49,602 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-23 04:07:49,602 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2022-07-23 04:07:49,602 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2022-07-23 04:07:49,603 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-07-23 04:07:49,603 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-07-23 04:07:49,603 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-07-23 04:07:49,603 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-07-23 04:07:49,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 04:07:49,603 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2022-07-23 04:07:49,603 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2022-07-23 04:07:49,603 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2022-07-23 04:07:49,603 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2022-07-23 04:07:49,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 04:07:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 04:07:49,604 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-23 04:07:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-23 04:07:50,389 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 04:07:50,391 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 04:08:00,994 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 04:08:01,009 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 04:08:01,010 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 04:08:01,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 04:08:01 BoogieIcfgContainer [2022-07-23 04:08:01,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 04:08:01,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 04:08:01,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 04:08:01,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 04:08:01,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 04:07:46" (1/3) ... [2022-07-23 04:08:01,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43659efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 04:08:01, skipping insertion in model container [2022-07-23 04:08:01,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:07:48" (2/3) ... [2022-07-23 04:08:01,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43659efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 04:08:01, skipping insertion in model container [2022-07-23 04:08:01,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 04:08:01" (3/3) ... [2022-07-23 04:08:01,022 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-07-23 04:08:01,033 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 04:08:01,033 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-23 04:08:01,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 04:08:01,141 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@1666d543, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@276cce6c [2022-07-23 04:08:01,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-23 04:08:01,153 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) [2022-07-23 04:08:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-23 04:08:01,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:01,160 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] [2022-07-23 04:08:01,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:01,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash -767786273, now seen corresponding path program 1 times [2022-07-23 04:08:01,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:01,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893330222] [2022-07-23 04:08:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:01,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:01,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:01,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:08:01,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:01,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893330222] [2022-07-23 04:08:01,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893330222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:01,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:01,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:08:01,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021741989] [2022-07-23 04:08:01,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:01,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:08:01,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:01,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:08:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:08:01,744 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) [2022-07-23 04:08:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:08:04,836 INFO L93 Difference]: Finished difference Result 6337 states and 10000 transitions. [2022-07-23 04:08:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 04:08:04,839 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 [2022-07-23 04:08:04,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:08:04,881 INFO L225 Difference]: With dead ends: 6337 [2022-07-23 04:08:04,881 INFO L226 Difference]: Without dead ends: 3256 [2022-07-23 04:08:04,914 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 [2022-07-23 04:08:04,918 INFO L413 NwaCegarLoop]: 4566 mSDtfsCounter, 5099 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5471 SdHoareTripleChecker+Valid, 7483 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-23 04:08:04,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5471 Valid, 7483 Invalid, 1716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-23 04:08:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2022-07-23 04:08:05,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3067. [2022-07-23 04:08:05,086 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) [2022-07-23 04:08:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4657 transitions. [2022-07-23 04:08:05,112 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4657 transitions. Word has length 38 [2022-07-23 04:08:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:08:05,113 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 4657 transitions. [2022-07-23 04:08:05,113 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) [2022-07-23 04:08:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4657 transitions. [2022-07-23 04:08:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-23 04:08:05,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:05,115 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] [2022-07-23 04:08:05,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 04:08:05,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:05,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:05,116 INFO L85 PathProgramCache]: Analyzing trace with hash -66186399, now seen corresponding path program 1 times [2022-07-23 04:08:05,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:05,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585160418] [2022-07-23 04:08:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:05,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:05,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:05,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:08:05,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:05,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585160418] [2022-07-23 04:08:05,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585160418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:05,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:05,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:08:05,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182585053] [2022-07-23 04:08:05,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:05,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:08:05,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:05,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:08:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:08:05,285 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) [2022-07-23 04:08:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:08:08,059 INFO L93 Difference]: Finished difference Result 6316 states and 9662 transitions. [2022-07-23 04:08:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 04:08:08,059 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 [2022-07-23 04:08:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:08:08,087 INFO L225 Difference]: With dead ends: 6316 [2022-07-23 04:08:08,087 INFO L226 Difference]: Without dead ends: 3256 [2022-07-23 04:08:08,105 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 [2022-07-23 04:08:08,107 INFO L413 NwaCegarLoop]: 4552 mSDtfsCounter, 5073 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5444 SdHoareTripleChecker+Valid, 7465 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-23 04:08:08,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5444 Valid, 7465 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-23 04:08:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2022-07-23 04:08:08,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3067. [2022-07-23 04:08:08,209 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) [2022-07-23 04:08:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4656 transitions. [2022-07-23 04:08:08,225 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4656 transitions. Word has length 38 [2022-07-23 04:08:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:08:08,226 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 4656 transitions. [2022-07-23 04:08:08,226 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) [2022-07-23 04:08:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4656 transitions. [2022-07-23 04:08:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-23 04:08:08,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:08,229 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] [2022-07-23 04:08:08,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 04:08:08,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:08,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:08,230 INFO L85 PathProgramCache]: Analyzing trace with hash -43554145, now seen corresponding path program 1 times [2022-07-23 04:08:08,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:08,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115367242] [2022-07-23 04:08:08,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:08,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:08,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:08,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:08,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:08:08,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:08,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115367242] [2022-07-23 04:08:08,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115367242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:08,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:08,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:08:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713769692] [2022-07-23 04:08:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:08,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:08:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:08:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:08:08,360 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) [2022-07-23 04:08:11,733 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 [] [2022-07-23 04:08:16,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:08:16,534 INFO L93 Difference]: Finished difference Result 9477 states and 14530 transitions. [2022-07-23 04:08:16,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 04:08:16,535 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 [2022-07-23 04:08:16,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:08:16,583 INFO L225 Difference]: With dead ends: 9477 [2022-07-23 04:08:16,583 INFO L226 Difference]: Without dead ends: 6418 [2022-07-23 04:08:16,605 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 [2022-07-23 04:08:16,608 INFO L413 NwaCegarLoop]: 5060 mSDtfsCounter, 5693 mSDsluCounter, 6791 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 1608 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6157 SdHoareTripleChecker+Valid, 11851 SdHoareTripleChecker+Invalid, 3725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1608 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-23 04:08:16,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6157 Valid, 11851 Invalid, 3725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1608 Valid, 2116 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-07-23 04:08:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2022-07-23 04:08:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6023. [2022-07-23 04:08:16,875 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) [2022-07-23 04:08:16,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 9151 transitions. [2022-07-23 04:08:16,903 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 9151 transitions. Word has length 38 [2022-07-23 04:08:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:08:16,903 INFO L495 AbstractCegarLoop]: Abstraction has 6023 states and 9151 transitions. [2022-07-23 04:08:16,904 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) [2022-07-23 04:08:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 9151 transitions. [2022-07-23 04:08:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-23 04:08:16,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:16,907 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] [2022-07-23 04:08:16,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 04:08:16,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:16,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:16,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1342649249, now seen corresponding path program 1 times [2022-07-23 04:08:16,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:16,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64611633] [2022-07-23 04:08:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:16,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:17,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:08:17,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:17,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64611633] [2022-07-23 04:08:17,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64611633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:17,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:17,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 04:08:17,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538372075] [2022-07-23 04:08:17,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:17,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 04:08:17,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 04:08:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 04:08:17,097 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) [2022-07-23 04:08:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:08:23,538 INFO L93 Difference]: Finished difference Result 19256 states and 30210 transitions. [2022-07-23 04:08:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 04:08:23,539 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 [2022-07-23 04:08:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:08:23,606 INFO L225 Difference]: With dead ends: 19256 [2022-07-23 04:08:23,607 INFO L226 Difference]: Without dead ends: 13273 [2022-07-23 04:08:23,630 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 [2022-07-23 04:08:23,631 INFO L413 NwaCegarLoop]: 7232 mSDtfsCounter, 5094 mSDsluCounter, 14276 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 1433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5687 SdHoareTripleChecker+Valid, 21508 SdHoareTripleChecker+Invalid, 4838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1433 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-23 04:08:23,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5687 Valid, 21508 Invalid, 4838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1433 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-23 04:08:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13273 states. [2022-07-23 04:08:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13273 to 6025. [2022-07-23 04:08:23,902 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) [2022-07-23 04:08:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6025 states to 6025 states and 9153 transitions. [2022-07-23 04:08:23,932 INFO L78 Accepts]: Start accepts. Automaton has 6025 states and 9153 transitions. Word has length 38 [2022-07-23 04:08:23,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:08:23,933 INFO L495 AbstractCegarLoop]: Abstraction has 6025 states and 9153 transitions. [2022-07-23 04:08:23,933 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) [2022-07-23 04:08:23,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6025 states and 9153 transitions. [2022-07-23 04:08:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-23 04:08:23,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:23,936 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] [2022-07-23 04:08:23,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 04:08:23,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:23,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:23,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2014242960, now seen corresponding path program 1 times [2022-07-23 04:08:23,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:23,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396530894] [2022-07-23 04:08:23,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:23,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:08:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:08:24,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:24,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396530894] [2022-07-23 04:08:24,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396530894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:24,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:24,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:08:24,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066906769] [2022-07-23 04:08:24,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:24,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:08:24,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:08:24,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:08:24,095 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) [2022-07-23 04:08:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:08:26,666 INFO L93 Difference]: Finished difference Result 6405 states and 9867 transitions. [2022-07-23 04:08:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 04:08:26,667 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 [2022-07-23 04:08:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:08:26,730 INFO L225 Difference]: With dead ends: 6405 [2022-07-23 04:08:26,730 INFO L226 Difference]: Without dead ends: 6402 [2022-07-23 04:08:26,732 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 [2022-07-23 04:08:26,733 INFO L413 NwaCegarLoop]: 4547 mSDtfsCounter, 5055 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5425 SdHoareTripleChecker+Valid, 7456 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-23 04:08:26,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5425 Valid, 7456 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-23 04:08:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2022-07-23 04:08:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 6024. [2022-07-23 04:08:26,885 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) [2022-07-23 04:08:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 9151 transitions. [2022-07-23 04:08:26,909 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 9151 transitions. Word has length 43 [2022-07-23 04:08:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:08:26,911 INFO L495 AbstractCegarLoop]: Abstraction has 6024 states and 9151 transitions. [2022-07-23 04:08:26,911 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) [2022-07-23 04:08:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 9151 transitions. [2022-07-23 04:08:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-23 04:08:26,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:26,913 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] [2022-07-23 04:08:26,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 04:08:26,913 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:26,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:26,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1981866054, now seen corresponding path program 1 times [2022-07-23 04:08:26,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:26,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357852860] [2022-07-23 04:08:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:26,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:27,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:27,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:08:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:08:27,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:27,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357852860] [2022-07-23 04:08:27,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357852860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:27,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:27,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:08:27,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317921947] [2022-07-23 04:08:27,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:27,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:08:27,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:08:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:08:27,075 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) [2022-07-23 04:08:31,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:08:31,639 INFO L93 Difference]: Finished difference Result 18692 states and 28709 transitions. [2022-07-23 04:08:31,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 04:08:31,639 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 [2022-07-23 04:08:31,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:08:31,710 INFO L225 Difference]: With dead ends: 18692 [2022-07-23 04:08:31,711 INFO L226 Difference]: Without dead ends: 12712 [2022-07-23 04:08:31,733 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 [2022-07-23 04:08:31,735 INFO L413 NwaCegarLoop]: 6921 mSDtfsCounter, 5566 mSDsluCounter, 8228 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 1394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6025 SdHoareTripleChecker+Valid, 15149 SdHoareTripleChecker+Invalid, 3545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1394 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:08:31,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6025 Valid, 15149 Invalid, 3545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1394 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-23 04:08:31,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2022-07-23 04:08:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 11937. [2022-07-23 04:08:32,076 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) [2022-07-23 04:08:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11937 states to 11937 states and 18159 transitions. [2022-07-23 04:08:32,128 INFO L78 Accepts]: Start accepts. Automaton has 11937 states and 18159 transitions. Word has length 44 [2022-07-23 04:08:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:08:32,128 INFO L495 AbstractCegarLoop]: Abstraction has 11937 states and 18159 transitions. [2022-07-23 04:08:32,129 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) [2022-07-23 04:08:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11937 states and 18159 transitions. [2022-07-23 04:08:32,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-23 04:08:32,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:32,130 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] [2022-07-23 04:08:32,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 04:08:32,131 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:32,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:32,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1307198771, now seen corresponding path program 1 times [2022-07-23 04:08:32,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:32,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230772261] [2022-07-23 04:08:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:32,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:32,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:32,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:32,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:32,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:32,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:08:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:08:32,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:32,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230772261] [2022-07-23 04:08:32,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230772261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:32,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:32,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:08:32,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467582317] [2022-07-23 04:08:32,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:32,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:08:32,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:32,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:08:32,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:08:32,248 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) [2022-07-23 04:08:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:08:34,649 INFO L93 Difference]: Finished difference Result 12695 states and 19585 transitions. [2022-07-23 04:08:34,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 04:08:34,649 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 [2022-07-23 04:08:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:08:34,719 INFO L225 Difference]: With dead ends: 12695 [2022-07-23 04:08:34,719 INFO L226 Difference]: Without dead ends: 12692 [2022-07-23 04:08:34,732 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 [2022-07-23 04:08:34,733 INFO L413 NwaCegarLoop]: 4545 mSDtfsCounter, 5051 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5421 SdHoareTripleChecker+Valid, 7453 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1011 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:08:34,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5421 Valid, 7453 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-23 04:08:34,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12692 states. [2022-07-23 04:08:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12692 to 11936. [2022-07-23 04:08:35,100 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) [2022-07-23 04:08:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11936 states to 11936 states and 18157 transitions. [2022-07-23 04:08:35,158 INFO L78 Accepts]: Start accepts. Automaton has 11936 states and 18157 transitions. Word has length 45 [2022-07-23 04:08:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:08:35,160 INFO L495 AbstractCegarLoop]: Abstraction has 11936 states and 18157 transitions. [2022-07-23 04:08:35,160 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) [2022-07-23 04:08:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 11936 states and 18157 transitions. [2022-07-23 04:08:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-23 04:08:35,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:35,161 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] [2022-07-23 04:08:35,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-23 04:08:35,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:35,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1867354345, now seen corresponding path program 1 times [2022-07-23 04:08:35,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:35,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304131732] [2022-07-23 04:08:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:08:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:08:35,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:35,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304131732] [2022-07-23 04:08:35,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304131732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:35,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:35,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:08:35,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183638635] [2022-07-23 04:08:35,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:35,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:08:35,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:08:35,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:08:35,295 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) [2022-07-23 04:08:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:08:39,138 INFO L93 Difference]: Finished difference Result 18312 states and 27746 transitions. [2022-07-23 04:08:39,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 04:08:39,138 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 [2022-07-23 04:08:39,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:08:39,254 INFO L225 Difference]: With dead ends: 18312 [2022-07-23 04:08:39,255 INFO L226 Difference]: Without dead ends: 18242 [2022-07-23 04:08:39,280 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 [2022-07-23 04:08:39,280 INFO L413 NwaCegarLoop]: 4738 mSDtfsCounter, 3920 mSDsluCounter, 5875 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s 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, 3.3s IncrementalHoareTripleChecker+Time [2022-07-23 04:08:39,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4224 Valid, 10613 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1276 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-23 04:08:39,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18242 states. [2022-07-23 04:08:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18242 to 16860. [2022-07-23 04:08:39,890 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) [2022-07-23 04:08:39,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16860 states to 16860 states and 25210 transitions. [2022-07-23 04:08:39,964 INFO L78 Accepts]: Start accepts. Automaton has 16860 states and 25210 transitions. Word has length 46 [2022-07-23 04:08:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:08:39,965 INFO L495 AbstractCegarLoop]: Abstraction has 16860 states and 25210 transitions. [2022-07-23 04:08:39,965 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) [2022-07-23 04:08:39,965 INFO L276 IsEmpty]: Start isEmpty. Operand 16860 states and 25210 transitions. [2022-07-23 04:08:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-23 04:08:39,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:39,968 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] [2022-07-23 04:08:39,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-23 04:08:39,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:39,969 INFO L85 PathProgramCache]: Analyzing trace with hash -545678483, now seen corresponding path program 1 times [2022-07-23 04:08:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:39,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651376331] [2022-07-23 04:08:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:39,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:08:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-23 04:08:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-23 04:08:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-23 04:08:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-23 04:08:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-23 04:08:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 04:08:40,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651376331] [2022-07-23 04:08:40,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651376331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:40,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:40,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 04:08:40,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084208580] [2022-07-23 04:08:40,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:40,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 04:08:40,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 04:08:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 04:08:40,125 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) [2022-07-23 04:08:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:08:47,494 INFO L93 Difference]: Finished difference Result 37195 states and 56325 transitions. [2022-07-23 04:08:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 04:08:47,495 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 [2022-07-23 04:08:47,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:08:47,614 INFO L225 Difference]: With dead ends: 37195 [2022-07-23 04:08:47,614 INFO L226 Difference]: Without dead ends: 20390 [2022-07-23 04:08:47,694 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 [2022-07-23 04:08:47,695 INFO L413 NwaCegarLoop]: 4370 mSDtfsCounter, 3940 mSDsluCounter, 4155 mSDsCounter, 0 mSdLazyCounter, 5901 mSolverCounterSat, 1742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4454 SdHoareTripleChecker+Valid, 8525 SdHoareTripleChecker+Invalid, 7643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1742 IncrementalHoareTripleChecker+Valid, 5901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-23 04:08:47,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4454 Valid, 8525 Invalid, 7643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1742 Valid, 5901 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-07-23 04:08:47,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20390 states. [2022-07-23 04:08:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20390 to 18332. [2022-07-23 04:08:48,414 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) [2022-07-23 04:08:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18332 states to 18332 states and 27574 transitions. [2022-07-23 04:08:48,523 INFO L78 Accepts]: Start accepts. Automaton has 18332 states and 27574 transitions. Word has length 85 [2022-07-23 04:08:48,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:08:48,523 INFO L495 AbstractCegarLoop]: Abstraction has 18332 states and 27574 transitions. [2022-07-23 04:08:48,524 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) [2022-07-23 04:08:48,524 INFO L276 IsEmpty]: Start isEmpty. Operand 18332 states and 27574 transitions. [2022-07-23 04:08:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-23 04:08:48,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:48,526 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] [2022-07-23 04:08:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-23 04:08:48,527 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:48,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:48,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1631405334, now seen corresponding path program 1 times [2022-07-23 04:08:48,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:48,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123675265] [2022-07-23 04:08:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:48,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:08:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-23 04:08:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 04:08:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-23 04:08:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-23 04:08:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 04:08:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-23 04:08:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 04:08:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 04:08:48,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:48,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123675265] [2022-07-23 04:08:48,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123675265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:48,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:48,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 04:08:48,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893693632] [2022-07-23 04:08:48,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:48,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 04:08:48,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:48,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 04:08:48,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 04:08:48,697 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) [2022-07-23 04:08:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:08:57,748 INFO L93 Difference]: Finished difference Result 19716 states and 30043 transitions. [2022-07-23 04:08:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 04:08:57,748 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 [2022-07-23 04:08:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:08:57,842 INFO L225 Difference]: With dead ends: 19716 [2022-07-23 04:08:57,842 INFO L226 Difference]: Without dead ends: 19713 [2022-07-23 04:08:57,853 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 [2022-07-23 04:08:57,854 INFO L413 NwaCegarLoop]: 5603 mSDtfsCounter, 5947 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 6265 mSolverCounterSat, 2933 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, 2933 IncrementalHoareTripleChecker+Valid, 6265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-23 04:08:57,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6282 Valid, 9239 Invalid, 9198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2933 Valid, 6265 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-07-23 04:08:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19713 states. [2022-07-23 04:08:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 18331. [2022-07-23 04:08:58,402 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) [2022-07-23 04:08:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 27569 transitions. [2022-07-23 04:08:58,500 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 27569 transitions. Word has length 88 [2022-07-23 04:08:58,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:08:58,501 INFO L495 AbstractCegarLoop]: Abstraction has 18331 states and 27569 transitions. [2022-07-23 04:08:58,502 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) [2022-07-23 04:08:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 27569 transitions. [2022-07-23 04:08:58,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-23 04:08:58,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:08:58,508 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] [2022-07-23 04:08:58,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-23 04:08:58,509 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:08:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:08:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1002467120, now seen corresponding path program 1 times [2022-07-23 04:08:58,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:08:58,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187553817] [2022-07-23 04:08:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:08:58,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:08:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:08:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:08:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:08:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:08:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:08:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-23 04:08:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 04:08:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-23 04:08:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-23 04:08:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-23 04:08:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-23 04:08:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-23 04:08:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:08:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 04:08:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:08:58,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187553817] [2022-07-23 04:08:58,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187553817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:08:58,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:08:58,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 04:08:58,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860266650] [2022-07-23 04:08:58,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:08:58,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 04:08:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:08:58,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 04:08:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 04:08:58,679 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) [2022-07-23 04:09:11,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:09:11,722 INFO L93 Difference]: Finished difference Result 37985 states and 57538 transitions. [2022-07-23 04:09:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 04:09:11,722 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 [2022-07-23 04:09:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:09:11,825 INFO L225 Difference]: With dead ends: 37985 [2022-07-23 04:09:11,825 INFO L226 Difference]: Without dead ends: 19709 [2022-07-23 04:09:11,904 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 [2022-07-23 04:09:11,905 INFO L413 NwaCegarLoop]: 7230 mSDtfsCounter, 9333 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 8838 mSolverCounterSat, 5222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9567 SdHoareTripleChecker+Valid, 15334 SdHoareTripleChecker+Invalid, 14060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5222 IncrementalHoareTripleChecker+Valid, 8838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-07-23 04:09:11,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9567 Valid, 15334 Invalid, 14060 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5222 Valid, 8838 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-07-23 04:09:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19709 states. [2022-07-23 04:09:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19709 to 18287. [2022-07-23 04:09:12,489 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) [2022-07-23 04:09:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18287 states to 18287 states and 27490 transitions. [2022-07-23 04:09:12,569 INFO L78 Accepts]: Start accepts. Automaton has 18287 states and 27490 transitions. Word has length 98 [2022-07-23 04:09:12,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:09:12,569 INFO L495 AbstractCegarLoop]: Abstraction has 18287 states and 27490 transitions. [2022-07-23 04:09:12,570 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) [2022-07-23 04:09:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 18287 states and 27490 transitions. [2022-07-23 04:09:12,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-23 04:09:12,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:09:12,572 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] [2022-07-23 04:09:12,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-23 04:09:12,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:09:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:09:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash 593642895, now seen corresponding path program 1 times [2022-07-23 04:09:12,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:09:12,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522575963] [2022-07-23 04:09:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:09:12,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:09:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:09:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:09:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:09:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:09:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:09:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-23 04:09:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 04:09:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-23 04:09:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-23 04:09:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-23 04:09:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-23 04:09:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-23 04:09:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 04:09:12,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:09:12,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522575963] [2022-07-23 04:09:12,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522575963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:09:12,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:09:12,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 04:09:12,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249256258] [2022-07-23 04:09:12,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:09:12,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 04:09:12,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:09:12,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 04:09:12,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-23 04:09:12,769 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) [2022-07-23 04:09:27,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:09:27,215 INFO L93 Difference]: Finished difference Result 24849 states and 38058 transitions. [2022-07-23 04:09:27,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 04:09:27,215 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 [2022-07-23 04:09:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:09:27,318 INFO L225 Difference]: With dead ends: 24849 [2022-07-23 04:09:27,319 INFO L226 Difference]: Without dead ends: 21136 [2022-07-23 04:09:27,349 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 [2022-07-23 04:09:27,350 INFO L413 NwaCegarLoop]: 5585 mSDtfsCounter, 6929 mSDsluCounter, 16447 mSDsCounter, 0 mSdLazyCounter, 16029 mSolverCounterSat, 3361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6932 SdHoareTripleChecker+Valid, 22032 SdHoareTripleChecker+Invalid, 19390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3361 IncrementalHoareTripleChecker+Valid, 16029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-07-23 04:09:27,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6932 Valid, 22032 Invalid, 19390 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3361 Valid, 16029 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-07-23 04:09:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2022-07-23 04:09:28,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 16117. [2022-07-23 04:09:28,068 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) [2022-07-23 04:09:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16117 states to 16117 states and 24068 transitions. [2022-07-23 04:09:28,148 INFO L78 Accepts]: Start accepts. Automaton has 16117 states and 24068 transitions. Word has length 98 [2022-07-23 04:09:28,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:09:28,148 INFO L495 AbstractCegarLoop]: Abstraction has 16117 states and 24068 transitions. [2022-07-23 04:09:28,148 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) [2022-07-23 04:09:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 16117 states and 24068 transitions. [2022-07-23 04:09:28,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-23 04:09:28,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:09:28,155 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] [2022-07-23 04:09:28,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-23 04:09:28,156 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:09:28,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:09:28,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1640846850, now seen corresponding path program 1 times [2022-07-23 04:09:28,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:09:28,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844066455] [2022-07-23 04:09:28,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:09:28,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:09:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:09:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:09:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:09:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:09:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:09:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-23 04:09:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 04:09:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-23 04:09:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-23 04:09:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-23 04:09:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-23 04:09:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-23 04:09:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-23 04:09:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-23 04:09:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-23 04:09:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-23 04:09:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-23 04:09:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-23 04:09:28,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:09:28,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844066455] [2022-07-23 04:09:28,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844066455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:09:28,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:09:28,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 04:09:28,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451375484] [2022-07-23 04:09:28,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:09:28,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 04:09:28,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:09:28,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 04:09:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-23 04:09:28,388 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) [2022-07-23 04:09:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:09:42,328 INFO L93 Difference]: Finished difference Result 26996 states and 41029 transitions. [2022-07-23 04:09:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 04:09:42,328 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 [2022-07-23 04:09:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:09:42,430 INFO L225 Difference]: With dead ends: 26996 [2022-07-23 04:09:42,430 INFO L226 Difference]: Without dead ends: 21120 [2022-07-23 04:09:42,469 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 [2022-07-23 04:09:42,470 INFO L413 NwaCegarLoop]: 5578 mSDtfsCounter, 7857 mSDsluCounter, 15493 mSDsCounter, 0 mSdLazyCounter, 15933 mSolverCounterSat, 3450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7860 SdHoareTripleChecker+Valid, 21071 SdHoareTripleChecker+Invalid, 19383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3450 IncrementalHoareTripleChecker+Valid, 15933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-07-23 04:09:42,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7860 Valid, 21071 Invalid, 19383 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3450 Valid, 15933 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-07-23 04:09:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21120 states. [2022-07-23 04:09:43,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21120 to 16101. [2022-07-23 04:09:43,164 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) [2022-07-23 04:09:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16101 states to 16101 states and 24040 transitions. [2022-07-23 04:09:43,241 INFO L78 Accepts]: Start accepts. Automaton has 16101 states and 24040 transitions. Word has length 126 [2022-07-23 04:09:43,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:09:43,242 INFO L495 AbstractCegarLoop]: Abstraction has 16101 states and 24040 transitions. [2022-07-23 04:09:43,242 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) [2022-07-23 04:09:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 16101 states and 24040 transitions. [2022-07-23 04:09:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-23 04:09:43,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:09:43,253 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] [2022-07-23 04:09:43,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-23 04:09:43,253 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:09:43,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:09:43,254 INFO L85 PathProgramCache]: Analyzing trace with hash 94627519, now seen corresponding path program 1 times [2022-07-23 04:09:43,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:09:43,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193690691] [2022-07-23 04:09:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:09:43,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:09:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:09:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:09:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:09:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:09:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:09:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-23 04:09:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 04:09:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-23 04:09:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-23 04:09:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 04:09:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-23 04:09:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 04:09:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-23 04:09:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-23 04:09:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-23 04:09:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-23 04:09:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-23 04:09:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-23 04:09:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-23 04:09:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-23 04:09:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-23 04:09:43,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:09:43,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193690691] [2022-07-23 04:09:43,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193690691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:09:43,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:09:43,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 04:09:43,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153395374] [2022-07-23 04:09:43,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:09:43,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 04:09:43,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:09:43,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 04:09:43,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-23 04:09:43,470 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) [2022-07-23 04:09:56,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:09:56,627 INFO L93 Difference]: Finished difference Result 33359 states and 50181 transitions. [2022-07-23 04:09:56,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 04:09:56,628 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 [2022-07-23 04:09:56,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:09:56,714 INFO L225 Difference]: With dead ends: 33359 [2022-07-23 04:09:56,714 INFO L226 Difference]: Without dead ends: 17279 [2022-07-23 04:09:56,768 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 [2022-07-23 04:09:56,768 INFO L413 NwaCegarLoop]: 4307 mSDtfsCounter, 5140 mSDsluCounter, 11093 mSDsCounter, 0 mSdLazyCounter, 15100 mSolverCounterSat, 3020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5140 SdHoareTripleChecker+Valid, 15400 SdHoareTripleChecker+Invalid, 18120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3020 IncrementalHoareTripleChecker+Valid, 15100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:09:56,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5140 Valid, 15400 Invalid, 18120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3020 Valid, 15100 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-07-23 04:09:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17279 states. [2022-07-23 04:09:57,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17279 to 16095. [2022-07-23 04:09:57,308 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) [2022-07-23 04:09:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16095 states to 16095 states and 24018 transitions. [2022-07-23 04:09:57,380 INFO L78 Accepts]: Start accepts. Automaton has 16095 states and 24018 transitions. Word has length 146 [2022-07-23 04:09:57,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:09:57,380 INFO L495 AbstractCegarLoop]: Abstraction has 16095 states and 24018 transitions. [2022-07-23 04:09:57,380 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) [2022-07-23 04:09:57,381 INFO L276 IsEmpty]: Start isEmpty. Operand 16095 states and 24018 transitions. [2022-07-23 04:09:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-23 04:09:57,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:09:57,398 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] [2022-07-23 04:09:57,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-23 04:09:57,399 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:09:57,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:09:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1735475427, now seen corresponding path program 1 times [2022-07-23 04:09:57,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:09:57,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770751009] [2022-07-23 04:09:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:09:57,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:09:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:09:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:09:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:09:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:09:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:09:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-23 04:09:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 04:09:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-23 04:09:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-23 04:09:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 04:09:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-23 04:09:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-23 04:09:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-23 04:09:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-23 04:09:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-23 04:09:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-23 04:09:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-23 04:09:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-23 04:09:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-23 04:09:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-23 04:09:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-23 04:09:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-23 04:09:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-23 04:09:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-23 04:09:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-23 04:09:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-23 04:09:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:09:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-23 04:09:57,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:09:57,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770751009] [2022-07-23 04:09:57,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770751009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:09:57,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:09:57,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 04:09:57,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835144102] [2022-07-23 04:09:57,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:09:57,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 04:09:57,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:09:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 04:09:57,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-23 04:09:57,649 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) [2022-07-23 04:10:04,931 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 [] [2022-07-23 04:10:16,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 04:10:23,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 04:10:24,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:10:24,075 INFO L93 Difference]: Finished difference Result 41019 states and 63688 transitions. [2022-07-23 04:10:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 04:10:24,076 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 [2022-07-23 04:10:24,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:10:24,178 INFO L225 Difference]: With dead ends: 41019 [2022-07-23 04:10:24,178 INFO L226 Difference]: Without dead ends: 24979 [2022-07-23 04:10:24,225 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 [2022-07-23 04:10:24,226 INFO L413 NwaCegarLoop]: 5298 mSDtfsCounter, 9228 mSDsluCounter, 11926 mSDsCounter, 0 mSdLazyCounter, 13781 mSolverCounterSat, 5498 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9254 SdHoareTripleChecker+Valid, 17224 SdHoareTripleChecker+Invalid, 19282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5498 IncrementalHoareTripleChecker+Valid, 13781 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:10:24,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9254 Valid, 17224 Invalid, 19282 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5498 Valid, 13781 Invalid, 3 Unknown, 0 Unchecked, 25.0s Time] [2022-07-23 04:10:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24979 states. [2022-07-23 04:10:24,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24979 to 16103. [2022-07-23 04:10:24,903 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) [2022-07-23 04:10:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16103 states to 16103 states and 24026 transitions. [2022-07-23 04:10:24,966 INFO L78 Accepts]: Start accepts. Automaton has 16103 states and 24026 transitions. Word has length 193 [2022-07-23 04:10:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:10:24,967 INFO L495 AbstractCegarLoop]: Abstraction has 16103 states and 24026 transitions. [2022-07-23 04:10:24,967 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) [2022-07-23 04:10:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 16103 states and 24026 transitions. [2022-07-23 04:10:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-23 04:10:24,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:10:24,982 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] [2022-07-23 04:10:24,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-23 04:10:24,982 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:10:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:10:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2120771259, now seen corresponding path program 1 times [2022-07-23 04:10:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:10:24,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812130372] [2022-07-23 04:10:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:10:24,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:10:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:10:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:10:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:10:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:10:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:10:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-23 04:10:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 04:10:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-23 04:10:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-23 04:10:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 04:10:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-23 04:10:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-23 04:10:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-23 04:10:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-23 04:10:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-23 04:10:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-23 04:10:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-23 04:10:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-23 04:10:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-23 04:10:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-23 04:10:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-23 04:10:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-23 04:10:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-23 04:10:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-23 04:10:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-23 04:10:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-23 04:10:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-23 04:10:25,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:10:25,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812130372] [2022-07-23 04:10:25,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812130372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:10:25,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:10:25,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-23 04:10:25,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887096623] [2022-07-23 04:10:25,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:10:25,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 04:10:25,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:10:25,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 04:10:25,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-23 04:10:25,249 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) [2022-07-23 04:10:34,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 04:10:42,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 04:10:52,081 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 [] [2022-07-23 04:10:54,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:10:54,834 INFO L93 Difference]: Finished difference Result 36027 states and 55309 transitions. [2022-07-23 04:10:54,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 04:10:54,835 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 [2022-07-23 04:10:54,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:10:54,957 INFO L225 Difference]: With dead ends: 36027 [2022-07-23 04:10:54,957 INFO L226 Difference]: Without dead ends: 19947 [2022-07-23 04:10:55,018 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 [2022-07-23 04:10:55,019 INFO L413 NwaCegarLoop]: 4171 mSDtfsCounter, 6663 mSDsluCounter, 13852 mSDsCounter, 0 mSdLazyCounter, 22012 mSolverCounterSat, 4787 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6664 SdHoareTripleChecker+Valid, 18023 SdHoareTripleChecker+Invalid, 26802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4787 IncrementalHoareTripleChecker+Valid, 22012 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2022-07-23 04:10:55,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6664 Valid, 18023 Invalid, 26802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4787 Valid, 22012 Invalid, 3 Unknown, 0 Unchecked, 28.2s Time] [2022-07-23 04:10:55,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19947 states. [2022-07-23 04:10:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19947 to 16117. [2022-07-23 04:10:55,660 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) [2022-07-23 04:10:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16117 states to 16117 states and 24040 transitions. [2022-07-23 04:10:55,734 INFO L78 Accepts]: Start accepts. Automaton has 16117 states and 24040 transitions. Word has length 194 [2022-07-23 04:10:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:10:55,734 INFO L495 AbstractCegarLoop]: Abstraction has 16117 states and 24040 transitions. [2022-07-23 04:10:55,734 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) [2022-07-23 04:10:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 16117 states and 24040 transitions. [2022-07-23 04:10:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-23 04:10:55,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:10:55,763 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] [2022-07-23 04:10:55,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-23 04:10:55,764 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:10:55,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:10:55,764 INFO L85 PathProgramCache]: Analyzing trace with hash -807176600, now seen corresponding path program 1 times [2022-07-23 04:10:55,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:10:55,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833616958] [2022-07-23 04:10:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:10:55,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:10:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:10:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:10:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:10:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:10:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:10:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-23 04:10:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 04:10:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-23 04:10:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-23 04:10:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 04:10:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-23 04:10:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-23 04:10:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-23 04:10:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-23 04:10:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-23 04:10:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-23 04:10:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-23 04:10:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:10:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-23 04:10:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-23 04:10:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-23 04:10:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-23 04:10:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:10:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 04:10:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-23 04:10:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 04:10:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-23 04:10:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-23 04:10:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-23 04:10:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-23 04:10:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-23 04:10:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-23 04:10:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-23 04:10:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-23 04:10:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-23 04:10:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-23 04:10:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:10:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-23 04:10:56,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:10:56,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833616958] [2022-07-23 04:10:56,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833616958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:10:56,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:10:56,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 04:10:56,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142750432] [2022-07-23 04:10:56,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:10:56,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 04:10:56,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:10:56,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 04:10:56,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-23 04:10:56,196 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) [2022-07-23 04:11:03,850 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 [] [2022-07-23 04:11:16,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-23 04:11:19,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-23 04:11:22,678 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 [] [2022-07-23 04:11:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:11:26,235 INFO L93 Difference]: Finished difference Result 40575 states and 62936 transitions. [2022-07-23 04:11:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 04:11:26,236 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 262 [2022-07-23 04:11:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:11:26,352 INFO L225 Difference]: With dead ends: 40575 [2022-07-23 04:11:26,352 INFO L226 Difference]: Without dead ends: 24513 [2022-07-23 04:11:26,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-07-23 04:11:26,406 INFO L413 NwaCegarLoop]: 5665 mSDtfsCounter, 7771 mSDsluCounter, 11368 mSDsCounter, 0 mSdLazyCounter, 11015 mSolverCounterSat, 4696 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8007 SdHoareTripleChecker+Valid, 17033 SdHoareTripleChecker+Invalid, 15715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4696 IncrementalHoareTripleChecker+Valid, 11015 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2022-07-23 04:11:26,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8007 Valid, 17033 Invalid, 15715 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4696 Valid, 11015 Invalid, 4 Unknown, 0 Unchecked, 28.5s Time] [2022-07-23 04:11:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24513 states. [2022-07-23 04:11:27,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24513 to 16133. [2022-07-23 04:11:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16133 states, 12378 states have (on average 1.4301179512037485) internal successors, (17702), 12474 states have internal predecessors, (17702), 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) [2022-07-23 04:11:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 24056 transitions. [2022-07-23 04:11:27,327 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 24056 transitions. Word has length 262 [2022-07-23 04:11:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:11:27,328 INFO L495 AbstractCegarLoop]: Abstraction has 16133 states and 24056 transitions. [2022-07-23 04:11:27,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-07-23 04:11:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 24056 transitions. [2022-07-23 04:11:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-23 04:11:27,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:11:27,352 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, 1, 1] [2022-07-23 04:11:27,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-23 04:11:27,352 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:11:27,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:11:27,352 INFO L85 PathProgramCache]: Analyzing trace with hash 985862892, now seen corresponding path program 1 times [2022-07-23 04:11:27,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:11:27,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734315220] [2022-07-23 04:11:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:11:27,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:11:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:11:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:11:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:11:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:11:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:11:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-23 04:11:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 04:11:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-23 04:11:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-23 04:11:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 04:11:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-23 04:11:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-23 04:11:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-23 04:11:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-23 04:11:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-23 04:11:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-23 04:11:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-23 04:11:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:11:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-23 04:11:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-23 04:11:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-23 04:11:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-23 04:11:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:11:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 04:11:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-23 04:11:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 04:11:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-23 04:11:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-23 04:11:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-23 04:11:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-23 04:11:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-23 04:11:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-23 04:11:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-23 04:11:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-23 04:11:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-23 04:11:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-23 04:11:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-23 04:11:27,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:11:27,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734315220] [2022-07-23 04:11:27,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734315220] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 04:11:27,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162277825] [2022-07-23 04:11:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:11:27,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:11:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:11:27,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:11:27,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 04:11:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:28,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 3539 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 04:11:28,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:11:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-23 04:11:28,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:11:28,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162277825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:11:28,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 04:11:28,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-23 04:11:28,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635024840] [2022-07-23 04:11:28,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:11:28,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:11:28,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:11:28,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:11:28,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-23 04:11:28,817 INFO L87 Difference]: Start difference. First operand 16133 states and 24056 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-07-23 04:11:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:11:29,514 INFO L93 Difference]: Finished difference Result 32219 states and 49028 transitions. [2022-07-23 04:11:29,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:11:29,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 264 [2022-07-23 04:11:29,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:11:29,598 INFO L225 Difference]: With dead ends: 32219 [2022-07-23 04:11:29,599 INFO L226 Difference]: Without dead ends: 16141 [2022-07-23 04:11:29,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-23 04:11:29,671 INFO L413 NwaCegarLoop]: 4637 mSDtfsCounter, 0 mSDsluCounter, 4630 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9267 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:11:29,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9267 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:11:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16141 states. [2022-07-23 04:11:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16141 to 16133. [2022-07-23 04:11:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16133 states, 12378 states have (on average 1.4281790273065116) internal successors, (17678), 12474 states have internal predecessors, (17678), 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) [2022-07-23 04:11:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 24032 transitions. [2022-07-23 04:11:30,445 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 24032 transitions. Word has length 264 [2022-07-23 04:11:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:11:30,445 INFO L495 AbstractCegarLoop]: Abstraction has 16133 states and 24032 transitions. [2022-07-23 04:11:30,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-07-23 04:11:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 24032 transitions. [2022-07-23 04:11:30,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-23 04:11:30,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:11:30,467 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, 1, 1, 1, 1, 1] [2022-07-23 04:11:30,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-23 04:11:30,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-23 04:11:30,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:11:30,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:11:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2129056059, now seen corresponding path program 1 times [2022-07-23 04:11:30,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:11:30,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100680676] [2022-07-23 04:11:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:11:30,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:11:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:11:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 04:11:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 04:11:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:11:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 04:11:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-23 04:11:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 04:11:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-23 04:11:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-23 04:11:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 04:11:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-23 04:11:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-23 04:11:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-23 04:11:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-23 04:11:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-23 04:11:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-23 04:11:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-23 04:11:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 04:11:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-23 04:11:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-23 04:11:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-23 04:11:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-23 04:11:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 04:11:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 04:11:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 04:11:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 04:11:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-23 04:11:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-23 04:11:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-23 04:11:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-23 04:11:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-23 04:11:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-23 04:11:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-23 04:11:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-23 04:11:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-23 04:11:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-23 04:11:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-23 04:11:30,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:11:30,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100680676] [2022-07-23 04:11:30,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100680676] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 04:11:30,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33035307] [2022-07-23 04:11:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:11:30,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:11:31,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:11:31,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:11:31,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 04:11:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:11:32,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 3545 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 04:11:32,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:11:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-23 04:11:32,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 04:11:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-23 04:11:32,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33035307] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 04:11:32,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 04:11:32,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 12 [2022-07-23 04:11:32,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837739880] [2022-07-23 04:11:32,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 04:11:32,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 04:11:32,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:11:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 04:11:32,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-07-23 04:11:32,211 INFO L87 Difference]: Start difference. First operand 16133 states and 24032 transitions. Second operand has 12 states, 12 states have (on average 20.0) internal successors, (240), 7 states have internal predecessors, (240), 2 states have call successors, (61), 7 states have call predecessors, (61), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52)