./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 6c24879c 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-?-6c24879 [2022-07-12 16:49:58,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 16:49:58,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 16:49:58,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 16:49:58,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 16:49:58,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 16:49:58,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 16:49:58,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 16:49:58,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 16:49:58,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 16:49:58,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 16:49:58,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 16:49:58,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 16:49:58,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 16:49:58,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 16:49:58,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 16:49:58,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 16:49:58,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 16:49:58,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 16:49:58,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 16:49:58,673 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 16:49:58,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 16:49:58,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 16:49:58,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 16:49:58,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 16:49:58,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 16:49:58,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 16:49:58,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 16:49:58,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 16:49:58,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 16:49:58,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 16:49:58,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 16:49:58,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 16:49:58,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 16:49:58,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 16:49:58,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 16:49:58,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 16:49:58,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 16:49:58,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 16:49:58,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 16:49:58,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 16:49:58,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 16:49:58,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 16:49:58,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 16:49:58,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 16:49:58,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 16:49:58,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 16:49:58,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 16:49:58,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 16:49:58,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 16:49:58,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 16:49:58,713 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 16:49:58,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 16:49:58,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 16:49:58,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 16:49:58,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 16:49:58,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 16:49:58,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 16:49:58,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 16:49:58,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 16:49:58,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 16:49:58,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 16:49:58,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 16:49:58,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 16:49:58,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 16:49:58,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 16:49:58,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 16:49:58,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 16:49:58,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 16:49:58,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 16:49:58,717 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 16:49:58,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 16:49:58,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 16:49:58,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2022-07-12 16:49:58,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 16:49:58,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 16:49:58,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 16:49:58,964 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 16:49:58,964 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 16:49:58,965 INFO L432 ainManager$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 [2022-07-12 16:49:59,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4896614ae/35879823ec984b44961b43df5d593736/FLAGcd230da8a [2022-07-12 16:49:59,661 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 16:49:59,661 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 [2022-07-12 16:49:59,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4896614ae/35879823ec984b44961b43df5d593736/FLAGcd230da8a [2022-07-12 16:50:00,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4896614ae/35879823ec984b44961b43df5d593736 [2022-07-12 16:50:00,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 16:50:00,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 16:50:00,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 16:50:00,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 16:50:00,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 16:50:00,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:50:00" (1/1) ... [2022-07-12 16:50:00,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684c719d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:00, skipping insertion in model container [2022-07-12 16:50:00,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:50:00" (1/1) ... [2022-07-12 16:50:00,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 16:50:00,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 16:50:01,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2022-07-12 16:50:01,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 16:50:01,983 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 16:50:02,379 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] [2022-07-12 16:50:02,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 16:50:02,437 INFO L208 MainTranslator]: Completed translation [2022-07-12 16:50:02,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02 WrapperNode [2022-07-12 16:50:02,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 16:50:02,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 16:50:02,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 16:50:02,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 16:50:02,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (1/1) ... [2022-07-12 16:50:02,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (1/1) ... [2022-07-12 16:50:02,759 INFO L137 Inliner]: procedures = 273, calls = 4073, calls flagged for inlining = 105, calls inlined = 96, statements flattened = 9059 [2022-07-12 16:50:02,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 16:50:02,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 16:50:02,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 16:50:02,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 16:50:02,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (1/1) ... [2022-07-12 16:50:02,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (1/1) ... [2022-07-12 16:50:02,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (1/1) ... [2022-07-12 16:50:02,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (1/1) ... [2022-07-12 16:50:03,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (1/1) ... [2022-07-12 16:50:03,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (1/1) ... [2022-07-12 16:50:03,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (1/1) ... [2022-07-12 16:50:03,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 16:50:03,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 16:50:03,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 16:50:03,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 16:50:03,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (1/1) ... [2022-07-12 16:50:03,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 16:50:03,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 16:50:03,119 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) [2022-07-12 16:50:03,136 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 [2022-07-12 16:50:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-12 16:50:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-12 16:50:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2022-07-12 16:50:03,152 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2022-07-12 16:50:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-12 16:50:03,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-12 16:50:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-12 16:50:03,152 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-12 16:50:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-07-12 16:50:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 16:50:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 16:50:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2022-07-12 16:50:03,153 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2022-07-12 16:50:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-07-12 16:50:03,153 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-07-12 16:50:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-07-12 16:50:03,154 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-07-12 16:50:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-12 16:50:03,154 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-12 16:50:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-07-12 16:50:03,154 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-07-12 16:50:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2022-07-12 16:50:03,154 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2022-07-12 16:50:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 16:50:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 16:50:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2022-07-12 16:50:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2022-07-12 16:50:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2022-07-12 16:50:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2022-07-12 16:50:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-07-12 16:50:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-07-12 16:50:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-07-12 16:50:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-07-12 16:50:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 16:50:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 16:50:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 16:50:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 16:50:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-12 16:50:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-12 16:50:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2022-07-12 16:50:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2022-07-12 16:50:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-07-12 16:50:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-07-12 16:50:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-12 16:50:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-12 16:50:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2022-07-12 16:50:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2022-07-12 16:50:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 16:50:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 16:50:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2022-07-12 16:50:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2022-07-12 16:50:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2022-07-12 16:50:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2022-07-12 16:50:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 16:50:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 16:50:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2022-07-12 16:50:03,160 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2022-07-12 16:50:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2022-07-12 16:50:03,160 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2022-07-12 16:50:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2022-07-12 16:50:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2022-07-12 16:50:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2022-07-12 16:50:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2022-07-12 16:50:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2022-07-12 16:50:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2022-07-12 16:50:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 16:50:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2022-07-12 16:50:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2022-07-12 16:50:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-12 16:50:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2022-07-12 16:50:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2022-07-12 16:50:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-07-12 16:50:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-07-12 16:50:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-07-12 16:50:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-07-12 16:50:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 16:50:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2022-07-12 16:50:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2022-07-12 16:50:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2022-07-12 16:50:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2022-07-12 16:50:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-12 16:50:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-12 16:50:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2022-07-12 16:50:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2022-07-12 16:50:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-07-12 16:50:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-07-12 16:50:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-07-12 16:50:03,165 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-07-12 16:50:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 16:50:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2022-07-12 16:50:03,165 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2022-07-12 16:50:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 16:50:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-12 16:50:03,166 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-12 16:50:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 16:50:03,166 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 16:50:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 16:50:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 16:50:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2022-07-12 16:50:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2022-07-12 16:50:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-12 16:50:03,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-12 16:50:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2022-07-12 16:50:03,168 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2022-07-12 16:50:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2022-07-12 16:50:03,168 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2022-07-12 16:50:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-12 16:50:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-12 16:50:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 16:50:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-12 16:50:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-12 16:50:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2022-07-12 16:50:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2022-07-12 16:50:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-07-12 16:50:03,170 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-07-12 16:50:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 16:50:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2022-07-12 16:50:03,170 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2022-07-12 16:50:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 16:50:03,172 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2022-07-12 16:50:03,173 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2022-07-12 16:50:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2022-07-12 16:50:03,173 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2022-07-12 16:50:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 16:50:03,174 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 16:50:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2022-07-12 16:50:03,175 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2022-07-12 16:50:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2022-07-12 16:50:03,179 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2022-07-12 16:50:03,179 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-07-12 16:50:03,179 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-07-12 16:50:03,179 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2022-07-12 16:50:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2022-07-12 16:50:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 16:50:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 16:50:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2022-07-12 16:50:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2022-07-12 16:50:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-07-12 16:50:03,180 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-07-12 16:50:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 16:50:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-12 16:50:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-12 16:50:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2022-07-12 16:50:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2022-07-12 16:50:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2022-07-12 16:50:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2022-07-12 16:50:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2022-07-12 16:50:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2022-07-12 16:50:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 16:50:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 16:50:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-07-12 16:50:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-07-12 16:50:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 16:50:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-07-12 16:50:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-07-12 16:50:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-07-12 16:50:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-07-12 16:50:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-12 16:50:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-12 16:50:03,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 16:50:03,183 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2022-07-12 16:50:03,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2022-07-12 16:50:03,183 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2022-07-12 16:50:03,183 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2022-07-12 16:50:03,183 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-07-12 16:50:03,183 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-07-12 16:50:03,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 16:50:03,183 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-12 16:50:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2022-07-12 16:50:03,184 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2022-07-12 16:50:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2022-07-12 16:50:03,184 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2022-07-12 16:50:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2022-07-12 16:50:03,184 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2022-07-12 16:50:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-12 16:50:03,184 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-12 16:50:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-07-12 16:50:03,185 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-07-12 16:50:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-07-12 16:50:03,185 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-07-12 16:50:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2022-07-12 16:50:03,185 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2022-07-12 16:50:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2022-07-12 16:50:03,185 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2022-07-12 16:50:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2022-07-12 16:50:03,185 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2022-07-12 16:50:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-12 16:50:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-12 16:50:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2022-07-12 16:50:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2022-07-12 16:50:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-07-12 16:50:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-07-12 16:50:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-07-12 16:50:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-07-12 16:50:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 16:50:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2022-07-12 16:50:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2022-07-12 16:50:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2022-07-12 16:50:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2022-07-12 16:50:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 16:50:03,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 16:50:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-12 16:50:03,188 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-12 16:50:04,052 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 16:50:04,055 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 16:50:16,137 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 16:50:16,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 16:50:16,157 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 16:50:16,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:50:16 BoogieIcfgContainer [2022-07-12 16:50:16,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 16:50:16,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 16:50:16,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 16:50:16,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 16:50:16,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 04:50:00" (1/3) ... [2022-07-12 16:50:16,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d16460f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:50:16, skipping insertion in model container [2022-07-12 16:50:16,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:50:02" (2/3) ... [2022-07-12 16:50:16,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d16460f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:50:16, skipping insertion in model container [2022-07-12 16:50:16,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:50:16" (3/3) ... [2022-07-12 16:50:16,168 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-07-12 16:50:16,177 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 16:50:16,178 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 16:50:16,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 16:50:16,257 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@18b78481, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@293d3f8e [2022-07-12 16:50:16,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 16:50:16,267 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) [2022-07-12 16:50:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-12 16:50:16,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:50:16,274 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] [2022-07-12 16:50:16,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:50:16,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:50:16,278 INFO L85 PathProgramCache]: Analyzing trace with hash -767786273, now seen corresponding path program 1 times [2022-07-12 16:50:16,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:50:16,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053875754] [2022-07-12 16:50:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:50:16,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:50:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:50:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:16,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:50:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:16,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:50:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:50:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 16:50:16,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:50:16,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053875754] [2022-07-12 16:50:16,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053875754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:50:16,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:50:16,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 16:50:16,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305256589] [2022-07-12 16:50:16,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:50:16,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 16:50:16,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:50:16,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 16:50:16,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 16:50:16,771 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) [2022-07-12 16:50:19,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:50:19,745 INFO L93 Difference]: Finished difference Result 6337 states and 10000 transitions. [2022-07-12 16:50:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 16:50:19,747 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 [2022-07-12 16:50:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:50:19,780 INFO L225 Difference]: With dead ends: 6337 [2022-07-12 16:50:19,781 INFO L226 Difference]: Without dead ends: 3256 [2022-07-12 16:50:19,809 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 [2022-07-12 16:50:19,811 INFO L413 NwaCegarLoop]: 4564 mSDtfsCounter, 5099 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 7479 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 16:50:19,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5473 Valid, 7479 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 16:50:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2022-07-12 16:50:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3067. [2022-07-12 16:50:19,951 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) [2022-07-12 16:50:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4657 transitions. [2022-07-12 16:50:19,977 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4657 transitions. Word has length 38 [2022-07-12 16:50:19,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:50:19,978 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 4657 transitions. [2022-07-12 16:50:19,978 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) [2022-07-12 16:50:19,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4657 transitions. [2022-07-12 16:50:19,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-12 16:50:19,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:50:19,980 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] [2022-07-12 16:50:19,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 16:50:19,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:50:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:50:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash -66186399, now seen corresponding path program 1 times [2022-07-12 16:50:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:50:19,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782618975] [2022-07-12 16:50:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:50:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:50:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:20,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:50:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:50:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:20,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:50:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:20,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:50:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 16:50:20,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:50:20,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782618975] [2022-07-12 16:50:20,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782618975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:50:20,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:50:20,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 16:50:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177721916] [2022-07-12 16:50:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:50:20,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 16:50:20,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:50:20,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 16:50:20,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 16:50:20,119 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) [2022-07-12 16:50:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:50:23,057 INFO L93 Difference]: Finished difference Result 6316 states and 9662 transitions. [2022-07-12 16:50:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 16:50:23,058 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 [2022-07-12 16:50:23,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:50:23,079 INFO L225 Difference]: With dead ends: 6316 [2022-07-12 16:50:23,079 INFO L226 Difference]: Without dead ends: 3256 [2022-07-12 16:50:23,092 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 [2022-07-12 16:50:23,094 INFO L413 NwaCegarLoop]: 4548 mSDtfsCounter, 5073 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5448 SdHoareTripleChecker+Valid, 7457 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 16:50:23,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5448 Valid, 7457 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 16:50:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2022-07-12 16:50:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3067. [2022-07-12 16:50:23,176 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) [2022-07-12 16:50:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4656 transitions. [2022-07-12 16:50:23,191 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4656 transitions. Word has length 38 [2022-07-12 16:50:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:50:23,192 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 4656 transitions. [2022-07-12 16:50:23,192 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) [2022-07-12 16:50:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4656 transitions. [2022-07-12 16:50:23,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-12 16:50:23,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:50:23,194 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] [2022-07-12 16:50:23,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 16:50:23,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:50:23,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:50:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash -43554145, now seen corresponding path program 1 times [2022-07-12 16:50:23,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:50:23,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787405748] [2022-07-12 16:50:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:50:23,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:50:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:23,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:50:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:23,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:50:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:50:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:50:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 16:50:23,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:50:23,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787405748] [2022-07-12 16:50:23,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787405748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:50:23,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:50:23,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 16:50:23,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658286105] [2022-07-12 16:50:23,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:50:23,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 16:50:23,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:50:23,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 16:50:23,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 16:50:23,354 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) [2022-07-12 16:50:26,546 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 [] [2022-07-12 16:50:30,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:50:30,811 INFO L93 Difference]: Finished difference Result 9477 states and 14530 transitions. [2022-07-12 16:50:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 16:50:30,812 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 [2022-07-12 16:50:30,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:50:30,853 INFO L225 Difference]: With dead ends: 9477 [2022-07-12 16:50:30,853 INFO L226 Difference]: Without dead ends: 6418 [2022-07-12 16:50:30,870 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 [2022-07-12 16:50:30,871 INFO L413 NwaCegarLoop]: 5058 mSDtfsCounter, 5693 mSDsluCounter, 6786 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 1608 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6156 SdHoareTripleChecker+Valid, 11844 SdHoareTripleChecker+Invalid, 3725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1608 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-12 16:50:30,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6156 Valid, 11844 Invalid, 3725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1608 Valid, 2116 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-07-12 16:50:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2022-07-12 16:50:31,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6023. [2022-07-12 16:50:31,051 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) [2022-07-12 16:50:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 9151 transitions. [2022-07-12 16:50:31,078 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 9151 transitions. Word has length 38 [2022-07-12 16:50:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:50:31,079 INFO L495 AbstractCegarLoop]: Abstraction has 6023 states and 9151 transitions. [2022-07-12 16:50:31,079 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) [2022-07-12 16:50:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 9151 transitions. [2022-07-12 16:50:31,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-12 16:50:31,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:50:31,082 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] [2022-07-12 16:50:31,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 16:50:31,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:50:31,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:50:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1342649249, now seen corresponding path program 1 times [2022-07-12 16:50:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:50:31,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954353662] [2022-07-12 16:50:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:50:31,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:50:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:50:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:31,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:50:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:50:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:50:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 16:50:31,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:50:31,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954353662] [2022-07-12 16:50:31,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954353662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:50:31,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:50:31,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 16:50:31,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013270602] [2022-07-12 16:50:31,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:50:31,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 16:50:31,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:50:31,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 16:50:31,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 16:50:31,260 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) [2022-07-12 16:50:36,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 16:50:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:50:39,102 INFO L93 Difference]: Finished difference Result 19256 states and 30210 transitions. [2022-07-12 16:50:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 16:50:39,103 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 [2022-07-12 16:50:39,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:50:39,186 INFO L225 Difference]: With dead ends: 19256 [2022-07-12 16:50:39,187 INFO L226 Difference]: Without dead ends: 13273 [2022-07-12 16:50:39,225 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 [2022-07-12 16:50:39,225 INFO L413 NwaCegarLoop]: 7224 mSDtfsCounter, 5094 mSDsluCounter, 14260 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 1437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5691 SdHoareTripleChecker+Valid, 21484 SdHoareTripleChecker+Invalid, 4842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1437 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-12 16:50:39,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5691 Valid, 21484 Invalid, 4842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1437 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-12 16:50:39,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13273 states. [2022-07-12 16:50:39,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13273 to 6025. [2022-07-12 16:50:39,625 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) [2022-07-12 16:50:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6025 states to 6025 states and 9153 transitions. [2022-07-12 16:50:39,657 INFO L78 Accepts]: Start accepts. Automaton has 6025 states and 9153 transitions. Word has length 38 [2022-07-12 16:50:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:50:39,658 INFO L495 AbstractCegarLoop]: Abstraction has 6025 states and 9153 transitions. [2022-07-12 16:50:39,658 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) [2022-07-12 16:50:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 6025 states and 9153 transitions. [2022-07-12 16:50:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 16:50:39,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:50:39,662 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] [2022-07-12 16:50:39,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 16:50:39,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:50:39,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:50:39,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2014242960, now seen corresponding path program 1 times [2022-07-12 16:50:39,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:50:39,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746027903] [2022-07-12 16:50:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:50:39,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:50:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:50:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:39,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:50:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:50:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:39,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:50:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:50:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 16:50:39,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:50:39,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746027903] [2022-07-12 16:50:39,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746027903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:50:39,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:50:39,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 16:50:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479244136] [2022-07-12 16:50:39,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:50:39,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 16:50:39,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:50:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 16:50:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 16:50:39,825 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) [2022-07-12 16:50:42,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:50:42,248 INFO L93 Difference]: Finished difference Result 6405 states and 9867 transitions. [2022-07-12 16:50:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 16:50:42,248 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 [2022-07-12 16:50:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:50:42,278 INFO L225 Difference]: With dead ends: 6405 [2022-07-12 16:50:42,278 INFO L226 Difference]: Without dead ends: 6402 [2022-07-12 16:50:42,285 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 [2022-07-12 16:50:42,285 INFO L413 NwaCegarLoop]: 4548 mSDtfsCounter, 5055 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5424 SdHoareTripleChecker+Valid, 7458 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 16:50:42,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5424 Valid, 7458 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 16:50:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2022-07-12 16:50:42,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 6024. [2022-07-12 16:50:42,498 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) [2022-07-12 16:50:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 9151 transitions. [2022-07-12 16:50:42,525 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 9151 transitions. Word has length 43 [2022-07-12 16:50:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:50:42,526 INFO L495 AbstractCegarLoop]: Abstraction has 6024 states and 9151 transitions. [2022-07-12 16:50:42,526 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) [2022-07-12 16:50:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 9151 transitions. [2022-07-12 16:50:42,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 16:50:42,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:50:42,528 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] [2022-07-12 16:50:42,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 16:50:42,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:50:42,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:50:42,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1981866054, now seen corresponding path program 1 times [2022-07-12 16:50:42,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:50:42,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035635899] [2022-07-12 16:50:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:50:42,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:50:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:50:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:50:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:50:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:42,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:50:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:42,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:50:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 16:50:42,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:50:42,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035635899] [2022-07-12 16:50:42,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035635899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:50:42,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:50:42,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 16:50:42,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777787975] [2022-07-12 16:50:42,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:50:42,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 16:50:42,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:50:42,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 16:50:42,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 16:50:42,706 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) [2022-07-12 16:50:47,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:50:47,243 INFO L93 Difference]: Finished difference Result 18692 states and 28709 transitions. [2022-07-12 16:50:47,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 16:50:47,244 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 [2022-07-12 16:50:47,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:50:47,307 INFO L225 Difference]: With dead ends: 18692 [2022-07-12 16:50:47,307 INFO L226 Difference]: Without dead ends: 12712 [2022-07-12 16:50:47,330 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 [2022-07-12 16:50:47,333 INFO L413 NwaCegarLoop]: 6915 mSDtfsCounter, 5566 mSDsluCounter, 8219 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 1394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6028 SdHoareTripleChecker+Valid, 15134 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 [2022-07-12 16:50:47,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6028 Valid, 15134 Invalid, 3545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1394 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-12 16:50:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2022-07-12 16:50:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 11937. [2022-07-12 16:50:47,678 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) [2022-07-12 16:50:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11937 states to 11937 states and 18159 transitions. [2022-07-12 16:50:47,733 INFO L78 Accepts]: Start accepts. Automaton has 11937 states and 18159 transitions. Word has length 44 [2022-07-12 16:50:47,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:50:47,734 INFO L495 AbstractCegarLoop]: Abstraction has 11937 states and 18159 transitions. [2022-07-12 16:50:47,734 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) [2022-07-12 16:50:47,734 INFO L276 IsEmpty]: Start isEmpty. Operand 11937 states and 18159 transitions. [2022-07-12 16:50:47,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 16:50:47,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:50:47,736 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] [2022-07-12 16:50:47,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 16:50:47,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:50:47,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:50:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1307198771, now seen corresponding path program 1 times [2022-07-12 16:50:47,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:50:47,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537363895] [2022-07-12 16:50:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:50:47,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:50:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:47,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:50:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:47,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:50:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:47,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:50:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:47,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:50:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:47,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:50:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 16:50:47,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:50:47,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537363895] [2022-07-12 16:50:47,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537363895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:50:47,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:50:47,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 16:50:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874254673] [2022-07-12 16:50:47,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:50:47,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 16:50:47,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:50:47,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 16:50:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 16:50:47,858 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) [2022-07-12 16:50:50,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:50:50,459 INFO L93 Difference]: Finished difference Result 12695 states and 19585 transitions. [2022-07-12 16:50:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 16:50:50,460 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 [2022-07-12 16:50:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:50:50,524 INFO L225 Difference]: With dead ends: 12695 [2022-07-12 16:50:50,524 INFO L226 Difference]: Without dead ends: 12692 [2022-07-12 16:50:50,538 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 [2022-07-12 16:50:50,539 INFO L413 NwaCegarLoop]: 4548 mSDtfsCounter, 5051 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5418 SdHoareTripleChecker+Valid, 7459 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1011 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 16:50:50,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5418 Valid, 7459 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 16:50:50,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12692 states. [2022-07-12 16:50:50,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12692 to 11936. [2022-07-12 16:50:50,978 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) [2022-07-12 16:50:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11936 states to 11936 states and 18157 transitions. [2022-07-12 16:50:51,029 INFO L78 Accepts]: Start accepts. Automaton has 11936 states and 18157 transitions. Word has length 45 [2022-07-12 16:50:51,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:50:51,030 INFO L495 AbstractCegarLoop]: Abstraction has 11936 states and 18157 transitions. [2022-07-12 16:50:51,030 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) [2022-07-12 16:50:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 11936 states and 18157 transitions. [2022-07-12 16:50:51,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 16:50:51,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:50:51,031 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] [2022-07-12 16:50:51,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 16:50:51,031 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:50:51,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:50:51,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1867354345, now seen corresponding path program 1 times [2022-07-12 16:50:51,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:50:51,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180947878] [2022-07-12 16:50:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:50:51,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:50:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:51,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:50:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:51,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:50:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:51,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:50:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:51,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:50:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:50:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 16:50:51,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:50:51,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180947878] [2022-07-12 16:50:51,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180947878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:50:51,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:50:51,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 16:50:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84100625] [2022-07-12 16:50:51,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:50:51,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 16:50:51,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:50:51,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 16:50:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 16:50:51,210 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) [2022-07-12 16:50:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:50:55,287 INFO L93 Difference]: Finished difference Result 18312 states and 27746 transitions. [2022-07-12 16:50:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 16:50:55,288 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 [2022-07-12 16:50:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:50:55,387 INFO L225 Difference]: With dead ends: 18312 [2022-07-12 16:50:55,387 INFO L226 Difference]: Without dead ends: 18242 [2022-07-12 16:50:55,406 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 [2022-07-12 16:50:55,407 INFO L413 NwaCegarLoop]: 4735 mSDtfsCounter, 3920 mSDsluCounter, 5869 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4224 SdHoareTripleChecker+Valid, 10604 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1276 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 16:50:55,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4224 Valid, 10604 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1276 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-12 16:50:55,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18242 states. [2022-07-12 16:50:55,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18242 to 16860. [2022-07-12 16:50:55,878 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) [2022-07-12 16:50:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16860 states to 16860 states and 25210 transitions. [2022-07-12 16:50:55,959 INFO L78 Accepts]: Start accepts. Automaton has 16860 states and 25210 transitions. Word has length 46 [2022-07-12 16:50:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:50:55,960 INFO L495 AbstractCegarLoop]: Abstraction has 16860 states and 25210 transitions. [2022-07-12 16:50:55,960 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) [2022-07-12 16:50:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 16860 states and 25210 transitions. [2022-07-12 16:50:55,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 16:50:55,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:50:55,963 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] [2022-07-12 16:50:55,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 16:50:55,964 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:50:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:50:55,964 INFO L85 PathProgramCache]: Analyzing trace with hash -545678483, now seen corresponding path program 1 times [2022-07-12 16:50:55,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:50:55,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515664529] [2022-07-12 16:50:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:50:55,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:50:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:50:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:50:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:50:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:50:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:50:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 16:50:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 16:50:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 16:50:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 16:50:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 16:50:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:50:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 16:50:56,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:50:56,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515664529] [2022-07-12 16:50:56,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515664529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:50:56,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:50:56,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 16:50:56,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765245838] [2022-07-12 16:50:56,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:50:56,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 16:50:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:50:56,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 16:50:56,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 16:50:56,193 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) [2022-07-12 16:51:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:51:03,780 INFO L93 Difference]: Finished difference Result 37195 states and 56325 transitions. [2022-07-12 16:51:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 16:51:03,780 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 [2022-07-12 16:51:03,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:51:03,900 INFO L225 Difference]: With dead ends: 37195 [2022-07-12 16:51:03,900 INFO L226 Difference]: Without dead ends: 20390 [2022-07-12 16:51:03,975 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 [2022-07-12 16:51:03,977 INFO L413 NwaCegarLoop]: 4370 mSDtfsCounter, 3940 mSDsluCounter, 4155 mSDsCounter, 0 mSdLazyCounter, 5903 mSolverCounterSat, 1742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4452 SdHoareTripleChecker+Valid, 8525 SdHoareTripleChecker+Invalid, 7645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1742 IncrementalHoareTripleChecker+Valid, 5903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-12 16:51:03,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4452 Valid, 8525 Invalid, 7645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1742 Valid, 5903 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-12 16:51:03,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20390 states. [2022-07-12 16:51:04,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20390 to 18332. [2022-07-12 16:51:04,556 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) [2022-07-12 16:51:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18332 states to 18332 states and 27574 transitions. [2022-07-12 16:51:04,644 INFO L78 Accepts]: Start accepts. Automaton has 18332 states and 27574 transitions. Word has length 85 [2022-07-12 16:51:04,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:51:04,645 INFO L495 AbstractCegarLoop]: Abstraction has 18332 states and 27574 transitions. [2022-07-12 16:51:04,645 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) [2022-07-12 16:51:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 18332 states and 27574 transitions. [2022-07-12 16:51:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-12 16:51:04,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:51:04,647 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] [2022-07-12 16:51:04,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 16:51:04,648 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:51:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:51:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1631405334, now seen corresponding path program 1 times [2022-07-12 16:51:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:51:04,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59422739] [2022-07-12 16:51:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:51:04,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:51:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:51:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:51:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:51:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:51:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:51:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 16:51:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 16:51:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 16:51:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 16:51:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 16:51:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 16:51:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 16:51:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 16:51:04,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:51:04,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59422739] [2022-07-12 16:51:04,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59422739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:51:04,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:51:04,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 16:51:04,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8798173] [2022-07-12 16:51:04,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:51:04,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 16:51:04,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:51:04,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 16:51:04,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 16:51:04,805 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) [2022-07-12 16:51:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:51:14,333 INFO L93 Difference]: Finished difference Result 19716 states and 30043 transitions. [2022-07-12 16:51:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 16:51:14,333 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 [2022-07-12 16:51:14,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:51:14,487 INFO L225 Difference]: With dead ends: 19716 [2022-07-12 16:51:14,487 INFO L226 Difference]: Without dead ends: 19713 [2022-07-12 16:51:14,495 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 [2022-07-12 16:51:14,496 INFO L413 NwaCegarLoop]: 5603 mSDtfsCounter, 5947 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 6261 mSolverCounterSat, 2931 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6284 SdHoareTripleChecker+Valid, 9239 SdHoareTripleChecker+Invalid, 9192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2931 IncrementalHoareTripleChecker+Valid, 6261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-12 16:51:14,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6284 Valid, 9239 Invalid, 9192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2931 Valid, 6261 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-07-12 16:51:14,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19713 states. [2022-07-12 16:51:14,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 18331. [2022-07-12 16:51:15,018 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) [2022-07-12 16:51:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 27569 transitions. [2022-07-12 16:51:15,105 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 27569 transitions. Word has length 88 [2022-07-12 16:51:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:51:15,107 INFO L495 AbstractCegarLoop]: Abstraction has 18331 states and 27569 transitions. [2022-07-12 16:51:15,107 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) [2022-07-12 16:51:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 27569 transitions. [2022-07-12 16:51:15,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 16:51:15,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:51:15,113 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] [2022-07-12 16:51:15,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 16:51:15,114 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:51:15,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:51:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1002467120, now seen corresponding path program 1 times [2022-07-12 16:51:15,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:51:15,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082061051] [2022-07-12 16:51:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:51:15,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:51:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:51:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:51:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:51:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:51:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:51:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 16:51:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 16:51:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 16:51:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 16:51:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 16:51:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 16:51:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 16:51:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 16:51:15,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:51:15,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082061051] [2022-07-12 16:51:15,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082061051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:51:15,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:51:15,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 16:51:15,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604766629] [2022-07-12 16:51:15,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:51:15,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 16:51:15,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:51:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 16:51:15,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 16:51:15,281 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) [2022-07-12 16:51:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:51:28,279 INFO L93 Difference]: Finished difference Result 37985 states and 57538 transitions. [2022-07-12 16:51:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 16:51:28,279 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 [2022-07-12 16:51:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:51:28,371 INFO L225 Difference]: With dead ends: 37985 [2022-07-12 16:51:28,371 INFO L226 Difference]: Without dead ends: 19709 [2022-07-12 16:51:28,434 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 [2022-07-12 16:51:28,434 INFO L413 NwaCegarLoop]: 7230 mSDtfsCounter, 9333 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 8846 mSolverCounterSat, 5215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9567 SdHoareTripleChecker+Valid, 15334 SdHoareTripleChecker+Invalid, 14061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5215 IncrementalHoareTripleChecker+Valid, 8846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-07-12 16:51:28,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9567 Valid, 15334 Invalid, 14061 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5215 Valid, 8846 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-07-12 16:51:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19709 states. [2022-07-12 16:51:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19709 to 18287. [2022-07-12 16:51:29,092 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) [2022-07-12 16:51:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18287 states to 18287 states and 27490 transitions. [2022-07-12 16:51:29,176 INFO L78 Accepts]: Start accepts. Automaton has 18287 states and 27490 transitions. Word has length 98 [2022-07-12 16:51:29,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:51:29,176 INFO L495 AbstractCegarLoop]: Abstraction has 18287 states and 27490 transitions. [2022-07-12 16:51:29,177 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) [2022-07-12 16:51:29,177 INFO L276 IsEmpty]: Start isEmpty. Operand 18287 states and 27490 transitions. [2022-07-12 16:51:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 16:51:29,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:51:29,179 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] [2022-07-12 16:51:29,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 16:51:29,179 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:51:29,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:51:29,180 INFO L85 PathProgramCache]: Analyzing trace with hash 593642895, now seen corresponding path program 1 times [2022-07-12 16:51:29,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:51:29,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585268842] [2022-07-12 16:51:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:51:29,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:51:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:51:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:51:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:51:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:51:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:51:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 16:51:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 16:51:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 16:51:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 16:51:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 16:51:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 16:51:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 16:51:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 16:51:29,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:51:29,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585268842] [2022-07-12 16:51:29,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585268842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:51:29,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:51:29,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 16:51:29,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066807597] [2022-07-12 16:51:29,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:51:29,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 16:51:29,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:51:29,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 16:51:29,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 16:51:29,380 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) [2022-07-12 16:51:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:51:44,294 INFO L93 Difference]: Finished difference Result 24849 states and 38058 transitions. [2022-07-12 16:51:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 16:51:44,294 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 [2022-07-12 16:51:44,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:51:44,368 INFO L225 Difference]: With dead ends: 24849 [2022-07-12 16:51:44,368 INFO L226 Difference]: Without dead ends: 21136 [2022-07-12 16:51:44,387 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 [2022-07-12 16:51:44,388 INFO L413 NwaCegarLoop]: 5585 mSDtfsCounter, 6929 mSDsluCounter, 16447 mSDsCounter, 0 mSdLazyCounter, 16033 mSolverCounterSat, 3357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6932 SdHoareTripleChecker+Valid, 22032 SdHoareTripleChecker+Invalid, 19390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3357 IncrementalHoareTripleChecker+Valid, 16033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-07-12 16:51:44,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6932 Valid, 22032 Invalid, 19390 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3357 Valid, 16033 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2022-07-12 16:51:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2022-07-12 16:51:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 16117. [2022-07-12 16:51:44,963 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) [2022-07-12 16:51:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16117 states to 16117 states and 24068 transitions. [2022-07-12 16:51:45,040 INFO L78 Accepts]: Start accepts. Automaton has 16117 states and 24068 transitions. Word has length 98 [2022-07-12 16:51:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:51:45,041 INFO L495 AbstractCegarLoop]: Abstraction has 16117 states and 24068 transitions. [2022-07-12 16:51:45,041 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) [2022-07-12 16:51:45,041 INFO L276 IsEmpty]: Start isEmpty. Operand 16117 states and 24068 transitions. [2022-07-12 16:51:45,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 16:51:45,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:51:45,048 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] [2022-07-12 16:51:45,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 16:51:45,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:51:45,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:51:45,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1640846850, now seen corresponding path program 1 times [2022-07-12 16:51:45,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:51:45,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326457840] [2022-07-12 16:51:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:51:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:51:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:51:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:51:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:51:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:51:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:51:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 16:51:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 16:51:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 16:51:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 16:51:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 16:51:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 16:51:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 16:51:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 16:51:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 16:51:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 16:51:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 16:51:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 16:51:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:51:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 16:51:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:51:45,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326457840] [2022-07-12 16:51:45,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326457840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:51:45,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:51:45,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 16:51:45,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118708339] [2022-07-12 16:51:45,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:51:45,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 16:51:45,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:51:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 16:51:45,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 16:51:45,311 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) [2022-07-12 16:52:00,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:52:00,385 INFO L93 Difference]: Finished difference Result 26996 states and 41029 transitions. [2022-07-12 16:52:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 16:52:00,386 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 [2022-07-12 16:52:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:52:00,475 INFO L225 Difference]: With dead ends: 26996 [2022-07-12 16:52:00,476 INFO L226 Difference]: Without dead ends: 21120 [2022-07-12 16:52:00,508 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 [2022-07-12 16:52:00,509 INFO L413 NwaCegarLoop]: 5580 mSDtfsCounter, 7857 mSDsluCounter, 15493 mSDsCounter, 0 mSdLazyCounter, 15933 mSolverCounterSat, 3452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7860 SdHoareTripleChecker+Valid, 21073 SdHoareTripleChecker+Invalid, 19385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3452 IncrementalHoareTripleChecker+Valid, 15933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-07-12 16:52:00,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7860 Valid, 21073 Invalid, 19385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3452 Valid, 15933 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2022-07-12 16:52:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21120 states. [2022-07-12 16:52:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21120 to 16101. [2022-07-12 16:52:01,183 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) [2022-07-12 16:52:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16101 states to 16101 states and 24040 transitions. [2022-07-12 16:52:01,263 INFO L78 Accepts]: Start accepts. Automaton has 16101 states and 24040 transitions. Word has length 126 [2022-07-12 16:52:01,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:52:01,264 INFO L495 AbstractCegarLoop]: Abstraction has 16101 states and 24040 transitions. [2022-07-12 16:52:01,264 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) [2022-07-12 16:52:01,264 INFO L276 IsEmpty]: Start isEmpty. Operand 16101 states and 24040 transitions. [2022-07-12 16:52:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 16:52:01,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:52:01,275 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] [2022-07-12 16:52:01,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 16:52:01,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:52:01,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:52:01,277 INFO L85 PathProgramCache]: Analyzing trace with hash 94627519, now seen corresponding path program 1 times [2022-07-12 16:52:01,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:52:01,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672530763] [2022-07-12 16:52:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:52:01,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:52:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:52:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:52:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:52:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:52:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:52:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 16:52:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 16:52:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 16:52:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 16:52:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 16:52:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 16:52:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 16:52:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 16:52:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 16:52:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 16:52:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 16:52:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 16:52:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 16:52:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 16:52:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 16:52:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 16:52:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:52:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672530763] [2022-07-12 16:52:01,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672530763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:52:01,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:52:01,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 16:52:01,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668459027] [2022-07-12 16:52:01,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:52:01,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 16:52:01,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:52:01,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 16:52:01,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 16:52:01,511 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) [2022-07-12 16:52:15,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:52:15,986 INFO L93 Difference]: Finished difference Result 33359 states and 50181 transitions. [2022-07-12 16:52:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 16:52:15,987 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 [2022-07-12 16:52:15,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:52:16,080 INFO L225 Difference]: With dead ends: 33359 [2022-07-12 16:52:16,080 INFO L226 Difference]: Without dead ends: 17279 [2022-07-12 16:52:16,142 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 [2022-07-12 16:52:16,143 INFO L413 NwaCegarLoop]: 4307 mSDtfsCounter, 5140 mSDsluCounter, 11093 mSDsCounter, 0 mSdLazyCounter, 15076 mSolverCounterSat, 3028 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5140 SdHoareTripleChecker+Valid, 15400 SdHoareTripleChecker+Invalid, 18104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3028 IncrementalHoareTripleChecker+Valid, 15076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-07-12 16:52:16,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5140 Valid, 15400 Invalid, 18104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3028 Valid, 15076 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-07-12 16:52:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17279 states. [2022-07-12 16:52:16,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17279 to 16095. [2022-07-12 16:52:16,762 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) [2022-07-12 16:52:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16095 states to 16095 states and 24018 transitions. [2022-07-12 16:52:16,845 INFO L78 Accepts]: Start accepts. Automaton has 16095 states and 24018 transitions. Word has length 146 [2022-07-12 16:52:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:52:16,845 INFO L495 AbstractCegarLoop]: Abstraction has 16095 states and 24018 transitions. [2022-07-12 16:52:16,846 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) [2022-07-12 16:52:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 16095 states and 24018 transitions. [2022-07-12 16:52:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-12 16:52:16,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:52:16,865 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] [2022-07-12 16:52:16,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 16:52:16,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:52:16,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:52:16,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1735475427, now seen corresponding path program 1 times [2022-07-12 16:52:16,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:52:16,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624384588] [2022-07-12 16:52:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:52:16,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:52:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:52:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:52:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:52:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:52:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:52:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 16:52:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 16:52:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 16:52:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 16:52:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 16:52:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 16:52:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 16:52:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 16:52:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 16:52:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 16:52:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 16:52:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 16:52:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 16:52:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 16:52:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 16:52:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 16:52:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 16:52:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 16:52:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 16:52:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-12 16:52:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-12 16:52:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 16:52:17,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:52:17,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624384588] [2022-07-12 16:52:17,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624384588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:52:17,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:52:17,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 16:52:17,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818696920] [2022-07-12 16:52:17,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:52:17,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 16:52:17,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:52:17,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 16:52:17,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 16:52:17,141 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) [2022-07-12 16:52:24,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 16:52:36,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 16:52:40,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-12 16:52:44,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 16:52:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:52:45,984 INFO L93 Difference]: Finished difference Result 41019 states and 63688 transitions. [2022-07-12 16:52:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 16:52:45,985 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 [2022-07-12 16:52:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:52:46,097 INFO L225 Difference]: With dead ends: 41019 [2022-07-12 16:52:46,097 INFO L226 Difference]: Without dead ends: 24979 [2022-07-12 16:52:46,149 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 [2022-07-12 16:52:46,150 INFO L413 NwaCegarLoop]: 5295 mSDtfsCounter, 9228 mSDsluCounter, 11926 mSDsCounter, 0 mSdLazyCounter, 13764 mSolverCounterSat, 5494 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9254 SdHoareTripleChecker+Valid, 17221 SdHoareTripleChecker+Invalid, 19262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5494 IncrementalHoareTripleChecker+Valid, 13764 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2022-07-12 16:52:46,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9254 Valid, 17221 Invalid, 19262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5494 Valid, 13764 Invalid, 4 Unknown, 0 Unchecked, 27.3s Time] [2022-07-12 16:52:46,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24979 states. [2022-07-12 16:52:46,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24979 to 16103. [2022-07-12 16:52:46,842 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) [2022-07-12 16:52:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16103 states to 16103 states and 24026 transitions. [2022-07-12 16:52:46,915 INFO L78 Accepts]: Start accepts. Automaton has 16103 states and 24026 transitions. Word has length 193 [2022-07-12 16:52:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:52:46,916 INFO L495 AbstractCegarLoop]: Abstraction has 16103 states and 24026 transitions. [2022-07-12 16:52:46,916 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) [2022-07-12 16:52:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 16103 states and 24026 transitions. [2022-07-12 16:52:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-12 16:52:46,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:52:46,931 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] [2022-07-12 16:52:46,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 16:52:46,932 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:52:46,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:52:46,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2120771259, now seen corresponding path program 1 times [2022-07-12 16:52:46,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:52:46,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044989063] [2022-07-12 16:52:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:52:46,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:52:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:52:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:52:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:52:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:52:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:52:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 16:52:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 16:52:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 16:52:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 16:52:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 16:52:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 16:52:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 16:52:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 16:52:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 16:52:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 16:52:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 16:52:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 16:52:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 16:52:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 16:52:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 16:52:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 16:52:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 16:52:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-12 16:52:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 16:52:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 16:52:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 16:52:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:52:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 16:52:47,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:52:47,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044989063] [2022-07-12 16:52:47,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044989063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:52:47,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:52:47,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 16:52:47,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67803120] [2022-07-12 16:52:47,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:52:47,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 16:52:47,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:52:47,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 16:52:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 16:52:47,206 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) [2022-07-12 16:52:56,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 16:53:04,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 16:53:14,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-12 16:53:17,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 16:53:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:53:18,594 INFO L93 Difference]: Finished difference Result 36027 states and 55309 transitions. [2022-07-12 16:53:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 16:53:18,595 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 [2022-07-12 16:53:18,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:53:18,709 INFO L225 Difference]: With dead ends: 36027 [2022-07-12 16:53:18,709 INFO L226 Difference]: Without dead ends: 19947 [2022-07-12 16:53:18,772 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 [2022-07-12 16:53:18,772 INFO L413 NwaCegarLoop]: 4170 mSDtfsCounter, 6663 mSDsluCounter, 13852 mSDsCounter, 0 mSdLazyCounter, 22017 mSolverCounterSat, 4778 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6664 SdHoareTripleChecker+Valid, 18022 SdHoareTripleChecker+Invalid, 26799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4778 IncrementalHoareTripleChecker+Valid, 22017 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-07-12 16:53:18,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6664 Valid, 18022 Invalid, 26799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4778 Valid, 22017 Invalid, 4 Unknown, 0 Unchecked, 29.9s Time] [2022-07-12 16:53:18,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19947 states. [2022-07-12 16:53:19,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19947 to 16117. [2022-07-12 16:53:19,533 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) [2022-07-12 16:53:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16117 states to 16117 states and 24040 transitions. [2022-07-12 16:53:19,610 INFO L78 Accepts]: Start accepts. Automaton has 16117 states and 24040 transitions. Word has length 194 [2022-07-12 16:53:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:53:19,611 INFO L495 AbstractCegarLoop]: Abstraction has 16117 states and 24040 transitions. [2022-07-12 16:53:19,611 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) [2022-07-12 16:53:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 16117 states and 24040 transitions. [2022-07-12 16:53:19,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-12 16:53:19,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:53:19,639 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] [2022-07-12 16:53:19,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 16:53:19,640 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:53:19,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:53:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash -807176600, now seen corresponding path program 1 times [2022-07-12 16:53:19,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:53:19,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215232837] [2022-07-12 16:53:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:53:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:53:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:53:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:53:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:53:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:53:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:53:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 16:53:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 16:53:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 16:53:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 16:53:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 16:53:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 16:53:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 16:53:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 16:53:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 16:53:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 16:53:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 16:53:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 16:53:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:53:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 16:53:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 16:53:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 16:53:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 16:53:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:53:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 16:53:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 16:53:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 16:53:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 16:53:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-12 16:53:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-12 16:53:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-12 16:53:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-12 16:53:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-12 16:53:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-12 16:53:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-12 16:53:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-12 16:53:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-12 16:53:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 16:53:19,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:53:19,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215232837] [2022-07-12 16:53:19,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215232837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:53:19,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 16:53:19,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 16:53:19,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579653074] [2022-07-12 16:53:19,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:53:19,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 16:53:19,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:53:19,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 16:53:19,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 16:53:19,963 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) [2022-07-12 16:53:26,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 16:53:32,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 16:53:39,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-12 16:53:43,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 16:53:47,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:53:47,681 INFO L93 Difference]: Finished difference Result 40575 states and 62936 transitions. [2022-07-12 16:53:47,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 16:53:47,682 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 [2022-07-12 16:53:47,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:53:47,786 INFO L225 Difference]: With dead ends: 40575 [2022-07-12 16:53:47,787 INFO L226 Difference]: Without dead ends: 24513 [2022-07-12 16:53:47,831 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 [2022-07-12 16:53:47,832 INFO L413 NwaCegarLoop]: 5666 mSDtfsCounter, 7771 mSDsluCounter, 11368 mSDsCounter, 0 mSdLazyCounter, 11021 mSolverCounterSat, 4695 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8006 SdHoareTripleChecker+Valid, 17034 SdHoareTripleChecker+Invalid, 15719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4695 IncrementalHoareTripleChecker+Valid, 11021 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-07-12 16:53:47,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8006 Valid, 17034 Invalid, 15719 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4695 Valid, 11021 Invalid, 3 Unknown, 0 Unchecked, 26.2s Time] [2022-07-12 16:53:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24513 states. [2022-07-12 16:53:48,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24513 to 16133. [2022-07-12 16:53:48,540 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) [2022-07-12 16:53:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 24056 transitions. [2022-07-12 16:53:48,615 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 24056 transitions. Word has length 262 [2022-07-12 16:53:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:53:48,616 INFO L495 AbstractCegarLoop]: Abstraction has 16133 states and 24056 transitions. [2022-07-12 16:53:48,616 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) [2022-07-12 16:53:48,616 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 24056 transitions. [2022-07-12 16:53:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-12 16:53:48,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:53:48,642 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] [2022-07-12 16:53:48,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 16:53:48,642 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:53:48,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:53:48,643 INFO L85 PathProgramCache]: Analyzing trace with hash 985862892, now seen corresponding path program 1 times [2022-07-12 16:53:48,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:53:48,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283948914] [2022-07-12 16:53:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:53:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:53:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:53:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:53:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:53:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:53:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:53:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 16:53:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 16:53:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 16:53:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 16:53:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 16:53:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 16:53:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 16:53:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 16:53:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 16:53:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 16:53:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 16:53:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 16:53:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:53:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 16:53:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 16:53:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 16:53:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 16:53:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:53:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 16:53:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 16:53:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 16:53:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 16:53:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 16:53:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-12 16:53:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-12 16:53:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-12 16:53:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-12 16:53:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-12 16:53:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-12 16:53:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-12 16:53:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-12 16:53:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 16:53:49,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:53:49,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283948914] [2022-07-12 16:53:49,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283948914] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 16:53:49,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119825671] [2022-07-12 16:53:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:53:49,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 16:53:49,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 16:53:49,075 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) [2022-07-12 16:53:49,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 16:53:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:50,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 3539 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 16:53:50,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 16:53:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 16:53:50,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 16:53:50,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119825671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 16:53:50,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 16:53:50,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 16:53:50,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090119031] [2022-07-12 16:53:50,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 16:53:50,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 16:53:50,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:53:50,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 16:53:50,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 16:53:50,086 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) [2022-07-12 16:53:50,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 16:53:50,824 INFO L93 Difference]: Finished difference Result 32219 states and 49028 transitions. [2022-07-12 16:53:50,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 16:53:50,825 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 [2022-07-12 16:53:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 16:53:50,923 INFO L225 Difference]: With dead ends: 32219 [2022-07-12 16:53:50,923 INFO L226 Difference]: Without dead ends: 16141 [2022-07-12 16:53:50,996 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 [2022-07-12 16:53:50,996 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 [2022-07-12 16:53:50,997 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] [2022-07-12 16:53:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16141 states. [2022-07-12 16:53:51,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16141 to 16133. [2022-07-12 16:53:51,663 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) [2022-07-12 16:53:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 24032 transitions. [2022-07-12 16:53:51,736 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 24032 transitions. Word has length 264 [2022-07-12 16:53:51,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 16:53:51,736 INFO L495 AbstractCegarLoop]: Abstraction has 16133 states and 24032 transitions. [2022-07-12 16:53:51,736 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) [2022-07-12 16:53:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 24032 transitions. [2022-07-12 16:53:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-12 16:53:51,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 16:53:51,758 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] [2022-07-12 16:53:51,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 16:53:51,973 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 [2022-07-12 16:53:51,973 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 16:53:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 16:53:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2129056059, now seen corresponding path program 1 times [2022-07-12 16:53:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 16:53:51,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894239228] [2022-07-12 16:53:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:53:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 16:53:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:53:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 16:53:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 16:53:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:53:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 16:53:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 16:53:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 16:53:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 16:53:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 16:53:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 16:53:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 16:53:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 16:53:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 16:53:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 16:53:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 16:53:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 16:53:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 16:53:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 16:53:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 16:53:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 16:53:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 16:53:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 16:53:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 16:53:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 16:53:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 16:53:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 16:53:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-12 16:53:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 16:53:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-12 16:53:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-12 16:53:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-12 16:53:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-12 16:53:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-12 16:53:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-12 16:53:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-12 16:53:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-12 16:53:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 16:53:52,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 16:53:52,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894239228] [2022-07-12 16:53:52,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894239228] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 16:53:52,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63051218] [2022-07-12 16:53:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 16:53:52,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 16:53:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 16:53:52,305 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) [2022-07-12 16:53:52,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 16:53:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 16:53:53,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 3545 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 16:53:53,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 16:53:53,297 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 16:53:53,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 16:53:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 16:53:53,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63051218] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 16:53:53,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 16:53:53,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 12 [2022-07-12 16:53:53,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056422223] [2022-07-12 16:53:53,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 16:53:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 16:53:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 16:53:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 16:53:53,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-07-12 16:53:53,452 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)