./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 f4b24e32 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-?-f4b24e3 [2022-07-14 04:32:14,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 04:32:14,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 04:32:14,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 04:32:14,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 04:32:14,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 04:32:14,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 04:32:14,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 04:32:14,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 04:32:14,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 04:32:14,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 04:32:14,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 04:32:14,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 04:32:14,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 04:32:14,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 04:32:14,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 04:32:14,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 04:32:14,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 04:32:14,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 04:32:14,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 04:32:14,557 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 04:32:14,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 04:32:14,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 04:32:14,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 04:32:14,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 04:32:14,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 04:32:14,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 04:32:14,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 04:32:14,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 04:32:14,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 04:32:14,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 04:32:14,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 04:32:14,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 04:32:14,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 04:32:14,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 04:32:14,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 04:32:14,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 04:32:14,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 04:32:14,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 04:32:14,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 04:32:14,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 04:32:14,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 04:32:14,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 04:32:14,594 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 04:32:14,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 04:32:14,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 04:32:14,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 04:32:14,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 04:32:14,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 04:32:14,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 04:32:14,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 04:32:14,600 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 04:32:14,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 04:32:14,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 04:32:14,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 04:32:14,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 04:32:14,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 04:32:14,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 04:32:14,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 04:32:14,602 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 04:32:14,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 04:32:14,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 04:32:14,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 04:32:14,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 04:32:14,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 04:32:14,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 04:32:14,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 04:32:14,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 04:32:14,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 04:32:14,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 04:32:14,604 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 04:32:14,604 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 04:32:14,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 04:32:14,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2022-07-14 04:32:14,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 04:32:14,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 04:32:14,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 04:32:14,817 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 04:32:14,817 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 04:32:14,818 INFO L432 ainManager$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 [2022-07-14 04:32:14,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df1e08f8d/141b3a457feb4524b1181458a7b04763/FLAG33d361c90 [2022-07-14 04:32:15,494 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 04:32:15,494 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 [2022-07-14 04:32:15,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df1e08f8d/141b3a457feb4524b1181458a7b04763/FLAG33d361c90 [2022-07-14 04:32:15,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df1e08f8d/141b3a457feb4524b1181458a7b04763 [2022-07-14 04:32:15,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 04:32:15,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 04:32:15,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 04:32:15,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 04:32:15,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 04:32:15,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 04:32:15" (1/1) ... [2022-07-14 04:32:15,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2faa71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:15, skipping insertion in model container [2022-07-14 04:32:15,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 04:32:15" (1/1) ... [2022-07-14 04:32:15,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 04:32:15,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 04:32:17,364 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] [2022-07-14 04:32:17,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 04:32:17,488 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 04:32:17,871 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] [2022-07-14 04:32:17,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 04:32:17,938 INFO L208 MainTranslator]: Completed translation [2022-07-14 04:32:17,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17 WrapperNode [2022-07-14 04:32:17,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 04:32:17,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 04:32:17,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 04:32:17,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 04:32:17,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (1/1) ... [2022-07-14 04:32:18,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (1/1) ... [2022-07-14 04:32:18,250 INFO L137 Inliner]: procedures = 273, calls = 4073, calls flagged for inlining = 105, calls inlined = 96, statements flattened = 9059 [2022-07-14 04:32:18,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 04:32:18,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 04:32:18,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 04:32:18,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 04:32:18,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (1/1) ... [2022-07-14 04:32:18,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (1/1) ... [2022-07-14 04:32:18,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (1/1) ... [2022-07-14 04:32:18,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (1/1) ... [2022-07-14 04:32:18,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (1/1) ... [2022-07-14 04:32:18,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (1/1) ... [2022-07-14 04:32:18,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (1/1) ... [2022-07-14 04:32:18,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 04:32:18,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 04:32:18,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 04:32:18,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 04:32:18,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (1/1) ... [2022-07-14 04:32:18,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 04:32:18,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 04:32:18,762 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) [2022-07-14 04:32:18,767 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 [2022-07-14 04:32:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-14 04:32:18,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-14 04:32:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2022-07-14 04:32:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2022-07-14 04:32:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-14 04:32:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-14 04:32:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-14 04:32:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-14 04:32:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-07-14 04:32:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 04:32:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 04:32:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2022-07-14 04:32:18,793 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2022-07-14 04:32:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-07-14 04:32:18,793 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-07-14 04:32:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-07-14 04:32:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-07-14 04:32:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-14 04:32:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-14 04:32:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-07-14 04:32:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-07-14 04:32:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2022-07-14 04:32:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2022-07-14 04:32:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 04:32:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 04:32:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2022-07-14 04:32:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2022-07-14 04:32:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2022-07-14 04:32:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2022-07-14 04:32:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-07-14 04:32:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-07-14 04:32:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-07-14 04:32:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-07-14 04:32:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-14 04:32:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-14 04:32:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 04:32:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 04:32:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-14 04:32:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-14 04:32:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2022-07-14 04:32:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2022-07-14 04:32:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-07-14 04:32:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-07-14 04:32:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-14 04:32:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-14 04:32:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2022-07-14 04:32:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2022-07-14 04:32:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 04:32:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 04:32:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2022-07-14 04:32:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2022-07-14 04:32:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2022-07-14 04:32:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2022-07-14 04:32:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-14 04:32:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-14 04:32:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2022-07-14 04:32:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2022-07-14 04:32:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2022-07-14 04:32:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2022-07-14 04:32:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2022-07-14 04:32:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2022-07-14 04:32:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2022-07-14 04:32:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2022-07-14 04:32:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2022-07-14 04:32:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2022-07-14 04:32:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 04:32:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2022-07-14 04:32:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2022-07-14 04:32:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-14 04:32:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2022-07-14 04:32:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2022-07-14 04:32:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-07-14 04:32:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-07-14 04:32:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-07-14 04:32:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-07-14 04:32:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 04:32:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2022-07-14 04:32:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2022-07-14 04:32:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2022-07-14 04:32:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2022-07-14 04:32:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-14 04:32:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-14 04:32:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2022-07-14 04:32:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2022-07-14 04:32:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-07-14 04:32:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-07-14 04:32:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-07-14 04:32:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-07-14 04:32:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 04:32:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2022-07-14 04:32:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2022-07-14 04:32:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 04:32:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-14 04:32:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-14 04:32:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-14 04:32:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-14 04:32:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-14 04:32:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-14 04:32:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2022-07-14 04:32:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2022-07-14 04:32:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-14 04:32:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-14 04:32:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2022-07-14 04:32:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2022-07-14 04:32:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2022-07-14 04:32:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2022-07-14 04:32:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-14 04:32:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-14 04:32:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-14 04:32:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-14 04:32:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-14 04:32:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2022-07-14 04:32:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2022-07-14 04:32:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-07-14 04:32:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-07-14 04:32:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-14 04:32:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2022-07-14 04:32:18,812 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2022-07-14 04:32:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 04:32:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2022-07-14 04:32:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2022-07-14 04:32:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2022-07-14 04:32:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2022-07-14 04:32:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 04:32:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 04:32:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2022-07-14 04:32:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2022-07-14 04:32:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2022-07-14 04:32:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2022-07-14 04:32:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-07-14 04:32:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-07-14 04:32:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2022-07-14 04:32:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2022-07-14 04:32:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 04:32:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 04:32:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2022-07-14 04:32:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2022-07-14 04:32:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-07-14 04:32:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-07-14 04:32:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 04:32:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-14 04:32:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-14 04:32:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2022-07-14 04:32:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2022-07-14 04:32:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2022-07-14 04:32:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2022-07-14 04:32:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2022-07-14 04:32:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2022-07-14 04:32:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 04:32:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 04:32:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-07-14 04:32:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-07-14 04:32:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 04:32:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-07-14 04:32:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-07-14 04:32:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-07-14 04:32:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-07-14 04:32:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-14 04:32:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-14 04:32:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 04:32:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2022-07-14 04:32:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2022-07-14 04:32:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2022-07-14 04:32:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2022-07-14 04:32:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-07-14 04:32:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-07-14 04:32:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 04:32:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-14 04:32:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2022-07-14 04:32:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2022-07-14 04:32:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2022-07-14 04:32:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2022-07-14 04:32:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2022-07-14 04:32:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2022-07-14 04:32:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-14 04:32:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-14 04:32:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-07-14 04:32:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-07-14 04:32:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-07-14 04:32:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-07-14 04:32:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2022-07-14 04:32:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2022-07-14 04:32:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2022-07-14 04:32:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2022-07-14 04:32:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2022-07-14 04:32:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2022-07-14 04:32:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-14 04:32:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-14 04:32:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2022-07-14 04:32:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2022-07-14 04:32:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-07-14 04:32:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-07-14 04:32:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-07-14 04:32:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-07-14 04:32:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 04:32:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2022-07-14 04:32:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2022-07-14 04:32:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2022-07-14 04:32:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2022-07-14 04:32:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 04:32:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 04:32:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-14 04:32:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-14 04:32:19,737 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 04:32:19,739 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 04:32:30,850 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 04:32:30,866 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 04:32:30,867 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 04:32:30,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:32:30 BoogieIcfgContainer [2022-07-14 04:32:30,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 04:32:30,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 04:32:30,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 04:32:30,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 04:32:30,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 04:32:15" (1/3) ... [2022-07-14 04:32:30,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625197c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 04:32:30, skipping insertion in model container [2022-07-14 04:32:30,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:17" (2/3) ... [2022-07-14 04:32:30,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625197c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 04:32:30, skipping insertion in model container [2022-07-14 04:32:30,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:32:30" (3/3) ... [2022-07-14 04:32:30,876 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-07-14 04:32:30,886 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 04:32:30,886 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 04:32:30,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 04:32:30,949 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@29d7e872, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a96496f [2022-07-14 04:32:30,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 04:32:30,958 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) [2022-07-14 04:32:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-14 04:32:30,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:32:30,965 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] [2022-07-14 04:32:30,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:32:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:32:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash -767786273, now seen corresponding path program 1 times [2022-07-14 04:32:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:32:30,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558338262] [2022-07-14 04:32:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:32:30,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:32:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:32:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:32:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:32:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:32:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 04:32:31,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:32:31,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558338262] [2022-07-14 04:32:31,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558338262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:32:31,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:32:31,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 04:32:31,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73225879] [2022-07-14 04:32:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:32:31,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 04:32:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:32:31,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 04:32:31,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 04:32:31,558 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) [2022-07-14 04:32:34,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:32:34,224 INFO L93 Difference]: Finished difference Result 6337 states and 10000 transitions. [2022-07-14 04:32:34,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 04:32:34,226 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 [2022-07-14 04:32:34,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:32:34,271 INFO L225 Difference]: With dead ends: 6337 [2022-07-14 04:32:34,271 INFO L226 Difference]: Without dead ends: 3256 [2022-07-14 04:32:34,300 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 [2022-07-14 04:32:34,305 INFO L413 NwaCegarLoop]: 4564 mSDtfsCounter, 5099 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-07-14 04:32:34,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5473 Valid, 7479 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-14 04:32:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2022-07-14 04:32:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3067. [2022-07-14 04:32:34,465 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) [2022-07-14 04:32:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4657 transitions. [2022-07-14 04:32:34,491 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4657 transitions. Word has length 38 [2022-07-14 04:32:34,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:32:34,491 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 4657 transitions. [2022-07-14 04:32:34,492 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) [2022-07-14 04:32:34,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4657 transitions. [2022-07-14 04:32:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-14 04:32:34,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:32:34,494 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] [2022-07-14 04:32:34,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 04:32:34,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:32:34,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:32:34,496 INFO L85 PathProgramCache]: Analyzing trace with hash -66186399, now seen corresponding path program 1 times [2022-07-14 04:32:34,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:32:34,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041176611] [2022-07-14 04:32:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:32:34,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:32:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:32:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:32:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:34,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:32:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:34,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:32:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 04:32:34,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:32:34,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041176611] [2022-07-14 04:32:34,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041176611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:32:34,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:32:34,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 04:32:34,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252584017] [2022-07-14 04:32:34,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:32:34,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 04:32:34,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:32:34,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 04:32:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 04:32:34,745 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) [2022-07-14 04:32:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:32:37,518 INFO L93 Difference]: Finished difference Result 6316 states and 9662 transitions. [2022-07-14 04:32:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 04:32:37,518 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 [2022-07-14 04:32:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:32:37,545 INFO L225 Difference]: With dead ends: 6316 [2022-07-14 04:32:37,545 INFO L226 Difference]: Without dead ends: 3256 [2022-07-14 04:32:37,562 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 [2022-07-14 04:32:37,565 INFO L413 NwaCegarLoop]: 4550 mSDtfsCounter, 5073 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5446 SdHoareTripleChecker+Valid, 7461 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-14 04:32:37,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5446 Valid, 7461 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-14 04:32:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2022-07-14 04:32:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3067. [2022-07-14 04:32:37,665 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) [2022-07-14 04:32:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4656 transitions. [2022-07-14 04:32:37,682 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4656 transitions. Word has length 38 [2022-07-14 04:32:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:32:37,682 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 4656 transitions. [2022-07-14 04:32:37,683 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) [2022-07-14 04:32:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4656 transitions. [2022-07-14 04:32:37,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-14 04:32:37,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:32:37,686 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] [2022-07-14 04:32:37,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 04:32:37,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:32:37,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:32:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash -43554145, now seen corresponding path program 1 times [2022-07-14 04:32:37,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:32:37,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675071530] [2022-07-14 04:32:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:32:37,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:32:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:37,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:32:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:32:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:32:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:37,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:32:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 04:32:37,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:32:37,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675071530] [2022-07-14 04:32:37,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675071530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:32:37,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:32:37,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 04:32:37,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406532120] [2022-07-14 04:32:37,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:32:37,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 04:32:37,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:32:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 04:32:37,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 04:32:37,861 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) [2022-07-14 04:32:41,146 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 [] [2022-07-14 04:32:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:32:46,225 INFO L93 Difference]: Finished difference Result 9477 states and 14530 transitions. [2022-07-14 04:32:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 04:32:46,225 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 [2022-07-14 04:32:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:32:46,281 INFO L225 Difference]: With dead ends: 9477 [2022-07-14 04:32:46,281 INFO L226 Difference]: Without dead ends: 6418 [2022-07-14 04:32:46,304 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 [2022-07-14 04:32:46,305 INFO L413 NwaCegarLoop]: 5063 mSDtfsCounter, 5693 mSDsluCounter, 6796 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 1608 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6156 SdHoareTripleChecker+Valid, 11859 SdHoareTripleChecker+Invalid, 3725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1608 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-14 04:32:46,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6156 Valid, 11859 Invalid, 3725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1608 Valid, 2116 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-07-14 04:32:46,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2022-07-14 04:32:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6023. [2022-07-14 04:32:46,536 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) [2022-07-14 04:32:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 9151 transitions. [2022-07-14 04:32:46,570 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 9151 transitions. Word has length 38 [2022-07-14 04:32:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:32:46,571 INFO L495 AbstractCegarLoop]: Abstraction has 6023 states and 9151 transitions. [2022-07-14 04:32:46,572 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) [2022-07-14 04:32:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 9151 transitions. [2022-07-14 04:32:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-14 04:32:46,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:32:46,575 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] [2022-07-14 04:32:46,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 04:32:46,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:32:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:32:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1342649249, now seen corresponding path program 1 times [2022-07-14 04:32:46,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:32:46,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020629245] [2022-07-14 04:32:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:32:46,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:32:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:46,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:32:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:32:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:32:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:46,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:32:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:46,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 04:32:46,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:32:46,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020629245] [2022-07-14 04:32:46,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020629245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:32:46,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:32:46,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 04:32:46,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417424289] [2022-07-14 04:32:46,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:32:46,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 04:32:46,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:32:46,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 04:32:46,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 04:32:46,802 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) [2022-07-14 04:32:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:32:52,475 INFO L93 Difference]: Finished difference Result 19256 states and 30210 transitions. [2022-07-14 04:32:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 04:32:52,479 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 [2022-07-14 04:32:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:32:52,573 INFO L225 Difference]: With dead ends: 19256 [2022-07-14 04:32:52,573 INFO L226 Difference]: Without dead ends: 13273 [2022-07-14 04:32:52,607 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 [2022-07-14 04:32:52,608 INFO L413 NwaCegarLoop]: 7227 mSDtfsCounter, 5094 mSDsluCounter, 14269 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 1437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5691 SdHoareTripleChecker+Valid, 21496 SdHoareTripleChecker+Invalid, 4842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1437 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-14 04:32:52,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5691 Valid, 21496 Invalid, 4842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1437 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-14 04:32:52,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13273 states. [2022-07-14 04:32:52,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13273 to 6025. [2022-07-14 04:32:52,883 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) [2022-07-14 04:32:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6025 states to 6025 states and 9153 transitions. [2022-07-14 04:32:52,916 INFO L78 Accepts]: Start accepts. Automaton has 6025 states and 9153 transitions. Word has length 38 [2022-07-14 04:32:52,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:32:52,917 INFO L495 AbstractCegarLoop]: Abstraction has 6025 states and 9153 transitions. [2022-07-14 04:32:52,917 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) [2022-07-14 04:32:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6025 states and 9153 transitions. [2022-07-14 04:32:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-14 04:32:52,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:32:52,918 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] [2022-07-14 04:32:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 04:32:52,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:32:52,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:32:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2014242960, now seen corresponding path program 1 times [2022-07-14 04:32:52,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:32:52,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974846481] [2022-07-14 04:32:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:32:52,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:32:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:53,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:32:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:53,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:32:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:53,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:32:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:53,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:32:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:53,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:32:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 04:32:53,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:32:53,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974846481] [2022-07-14 04:32:53,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974846481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:32:53,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:32:53,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 04:32:53,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51537874] [2022-07-14 04:32:53,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:32:53,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 04:32:53,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:32:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 04:32:53,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 04:32:53,069 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) [2022-07-14 04:32:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:32:55,648 INFO L93 Difference]: Finished difference Result 6405 states and 9867 transitions. [2022-07-14 04:32:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 04:32:55,648 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 [2022-07-14 04:32:55,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:32:55,679 INFO L225 Difference]: With dead ends: 6405 [2022-07-14 04:32:55,680 INFO L226 Difference]: Without dead ends: 6402 [2022-07-14 04:32:55,687 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 [2022-07-14 04:32:55,688 INFO L413 NwaCegarLoop]: 4546 mSDtfsCounter, 5055 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 7454 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-14 04:32:55,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5426 Valid, 7454 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-14 04:32:55,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2022-07-14 04:32:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 6024. [2022-07-14 04:32:55,855 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) [2022-07-14 04:32:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 9151 transitions. [2022-07-14 04:32:55,878 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 9151 transitions. Word has length 43 [2022-07-14 04:32:55,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:32:55,880 INFO L495 AbstractCegarLoop]: Abstraction has 6024 states and 9151 transitions. [2022-07-14 04:32:55,880 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) [2022-07-14 04:32:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 9151 transitions. [2022-07-14 04:32:55,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-14 04:32:55,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:32:55,882 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] [2022-07-14 04:32:55,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 04:32:55,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:32:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:32:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1981866054, now seen corresponding path program 1 times [2022-07-14 04:32:55,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:32:55,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157700950] [2022-07-14 04:32:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:32:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:32:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:55,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:32:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:56,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:32:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:32:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:56,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:32:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:56,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:32:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:32:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 04:32:56,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:32:56,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157700950] [2022-07-14 04:32:56,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157700950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:32:56,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:32:56,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 04:32:56,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772544891] [2022-07-14 04:32:56,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:32:56,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 04:32:56,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:32:56,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 04:32:56,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 04:32:56,041 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) [2022-07-14 04:33:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:33:00,829 INFO L93 Difference]: Finished difference Result 18692 states and 28709 transitions. [2022-07-14 04:33:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 04:33:00,830 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 [2022-07-14 04:33:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:33:00,902 INFO L225 Difference]: With dead ends: 18692 [2022-07-14 04:33:00,903 INFO L226 Difference]: Without dead ends: 12712 [2022-07-14 04:33:00,935 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 [2022-07-14 04:33:00,935 INFO L413 NwaCegarLoop]: 6919 mSDtfsCounter, 5566 mSDsluCounter, 8226 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 1394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6027 SdHoareTripleChecker+Valid, 15145 SdHoareTripleChecker+Invalid, 3545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1394 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-14 04:33:00,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6027 Valid, 15145 Invalid, 3545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1394 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-14 04:33:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2022-07-14 04:33:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 11937. [2022-07-14 04:33:01,306 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) [2022-07-14 04:33:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11937 states to 11937 states and 18159 transitions. [2022-07-14 04:33:01,356 INFO L78 Accepts]: Start accepts. Automaton has 11937 states and 18159 transitions. Word has length 44 [2022-07-14 04:33:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:33:01,357 INFO L495 AbstractCegarLoop]: Abstraction has 11937 states and 18159 transitions. [2022-07-14 04:33:01,357 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) [2022-07-14 04:33:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 11937 states and 18159 transitions. [2022-07-14 04:33:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-14 04:33:01,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:33:01,359 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] [2022-07-14 04:33:01,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 04:33:01,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:33:01,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:33:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1307198771, now seen corresponding path program 1 times [2022-07-14 04:33:01,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:33:01,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193935866] [2022-07-14 04:33:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:33:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:33:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:33:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:33:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:33:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:33:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:33:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 04:33:01,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:33:01,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193935866] [2022-07-14 04:33:01,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193935866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:33:01,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:33:01,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 04:33:01,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88783129] [2022-07-14 04:33:01,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:33:01,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 04:33:01,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:33:01,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 04:33:01,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 04:33:01,487 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) [2022-07-14 04:33:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:33:03,786 INFO L93 Difference]: Finished difference Result 12695 states and 19585 transitions. [2022-07-14 04:33:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 04:33:03,786 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 [2022-07-14 04:33:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:33:03,857 INFO L225 Difference]: With dead ends: 12695 [2022-07-14 04:33:03,857 INFO L226 Difference]: Without dead ends: 12692 [2022-07-14 04:33:03,871 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 [2022-07-14 04:33:03,874 INFO L413 NwaCegarLoop]: 4547 mSDtfsCounter, 5051 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5419 SdHoareTripleChecker+Valid, 7457 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1011 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 04:33:03,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5419 Valid, 7457 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 04:33:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12692 states. [2022-07-14 04:33:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12692 to 11936. [2022-07-14 04:33:04,232 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) [2022-07-14 04:33:04,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11936 states to 11936 states and 18157 transitions. [2022-07-14 04:33:04,279 INFO L78 Accepts]: Start accepts. Automaton has 11936 states and 18157 transitions. Word has length 45 [2022-07-14 04:33:04,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:33:04,280 INFO L495 AbstractCegarLoop]: Abstraction has 11936 states and 18157 transitions. [2022-07-14 04:33:04,280 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) [2022-07-14 04:33:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 11936 states and 18157 transitions. [2022-07-14 04:33:04,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-14 04:33:04,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:33:04,281 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] [2022-07-14 04:33:04,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 04:33:04,281 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:33:04,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:33:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1867354345, now seen corresponding path program 1 times [2022-07-14 04:33:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:33:04,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416848105] [2022-07-14 04:33:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:33:04,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:33:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:33:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:04,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:33:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:04,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:33:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:33:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:04,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:33:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 04:33:04,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:33:04,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416848105] [2022-07-14 04:33:04,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416848105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:33:04,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:33:04,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 04:33:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700164190] [2022-07-14 04:33:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:33:04,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 04:33:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:33:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 04:33:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 04:33:04,431 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) [2022-07-14 04:33:08,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:33:08,458 INFO L93 Difference]: Finished difference Result 18312 states and 27746 transitions. [2022-07-14 04:33:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 04:33:08,459 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 [2022-07-14 04:33:08,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:33:08,598 INFO L225 Difference]: With dead ends: 18312 [2022-07-14 04:33:08,599 INFO L226 Difference]: Without dead ends: 18242 [2022-07-14 04:33:08,629 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 [2022-07-14 04:33:08,629 INFO L413 NwaCegarLoop]: 4737 mSDtfsCounter, 3920 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4224 SdHoareTripleChecker+Valid, 10610 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1276 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-14 04:33:08,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4224 Valid, 10610 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1276 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-14 04:33:08,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18242 states. [2022-07-14 04:33:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18242 to 16860. [2022-07-14 04:33:09,320 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) [2022-07-14 04:33:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16860 states to 16860 states and 25210 transitions. [2022-07-14 04:33:09,396 INFO L78 Accepts]: Start accepts. Automaton has 16860 states and 25210 transitions. Word has length 46 [2022-07-14 04:33:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:33:09,397 INFO L495 AbstractCegarLoop]: Abstraction has 16860 states and 25210 transitions. [2022-07-14 04:33:09,397 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) [2022-07-14 04:33:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 16860 states and 25210 transitions. [2022-07-14 04:33:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-14 04:33:09,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:33:09,401 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] [2022-07-14 04:33:09,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 04:33:09,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:33:09,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:33:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash -545678483, now seen corresponding path program 1 times [2022-07-14 04:33:09,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:33:09,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928787303] [2022-07-14 04:33:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:33:09,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:33:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:33:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:33:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:33:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:33:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:33:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 04:33:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 04:33:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 04:33:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 04:33:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 04:33:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 04:33:09,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:33:09,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928787303] [2022-07-14 04:33:09,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928787303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:33:09,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:33:09,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 04:33:09,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622566578] [2022-07-14 04:33:09,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:33:09,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 04:33:09,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:33:09,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 04:33:09,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 04:33:09,580 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) [2022-07-14 04:33:16,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:33:16,778 INFO L93 Difference]: Finished difference Result 37195 states and 56325 transitions. [2022-07-14 04:33:16,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 04:33:16,778 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 [2022-07-14 04:33:16,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:33:16,893 INFO L225 Difference]: With dead ends: 37195 [2022-07-14 04:33:16,893 INFO L226 Difference]: Without dead ends: 20390 [2022-07-14 04:33:16,969 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 [2022-07-14 04:33:16,971 INFO L413 NwaCegarLoop]: 4369 mSDtfsCounter, 3940 mSDsluCounter, 4155 mSDsCounter, 0 mSdLazyCounter, 5892 mSolverCounterSat, 1742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4456 SdHoareTripleChecker+Valid, 8524 SdHoareTripleChecker+Invalid, 7634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1742 IncrementalHoareTripleChecker+Valid, 5892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-14 04:33:16,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4456 Valid, 8524 Invalid, 7634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1742 Valid, 5892 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-14 04:33:16,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20390 states. [2022-07-14 04:33:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20390 to 18332. [2022-07-14 04:33:17,651 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) [2022-07-14 04:33:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18332 states to 18332 states and 27574 transitions. [2022-07-14 04:33:17,738 INFO L78 Accepts]: Start accepts. Automaton has 18332 states and 27574 transitions. Word has length 85 [2022-07-14 04:33:17,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:33:17,739 INFO L495 AbstractCegarLoop]: Abstraction has 18332 states and 27574 transitions. [2022-07-14 04:33:17,739 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) [2022-07-14 04:33:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 18332 states and 27574 transitions. [2022-07-14 04:33:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-14 04:33:17,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:33:17,741 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] [2022-07-14 04:33:17,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 04:33:17,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:33:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:33:17,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1631405334, now seen corresponding path program 1 times [2022-07-14 04:33:17,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:33:17,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501090761] [2022-07-14 04:33:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:33:17,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:33:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:33:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:33:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:33:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:33:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:33:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 04:33:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 04:33:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 04:33:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 04:33:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 04:33:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 04:33:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 04:33:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 04:33:17,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:33:17,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501090761] [2022-07-14 04:33:17,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501090761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:33:17,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:33:17,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 04:33:17,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425878860] [2022-07-14 04:33:17,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:33:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 04:33:17,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:33:17,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 04:33:17,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 04:33:17,948 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) [2022-07-14 04:33:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:33:27,260 INFO L93 Difference]: Finished difference Result 19716 states and 30043 transitions. [2022-07-14 04:33:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 04:33:27,260 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 [2022-07-14 04:33:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:33:27,367 INFO L225 Difference]: With dead ends: 19716 [2022-07-14 04:33:27,367 INFO L226 Difference]: Without dead ends: 19713 [2022-07-14 04:33:27,387 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 [2022-07-14 04:33:27,388 INFO L413 NwaCegarLoop]: 5604 mSDtfsCounter, 5947 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 6264 mSolverCounterSat, 2931 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6284 SdHoareTripleChecker+Valid, 9240 SdHoareTripleChecker+Invalid, 9195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2931 IncrementalHoareTripleChecker+Valid, 6264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-14 04:33:27,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6284 Valid, 9240 Invalid, 9195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2931 Valid, 6264 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-07-14 04:33:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19713 states. [2022-07-14 04:33:28,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 18331. [2022-07-14 04:33:28,116 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) [2022-07-14 04:33:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 27569 transitions. [2022-07-14 04:33:28,197 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 27569 transitions. Word has length 88 [2022-07-14 04:33:28,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:33:28,199 INFO L495 AbstractCegarLoop]: Abstraction has 18331 states and 27569 transitions. [2022-07-14 04:33:28,199 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) [2022-07-14 04:33:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 27569 transitions. [2022-07-14 04:33:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-14 04:33:28,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:33:28,206 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] [2022-07-14 04:33:28,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-14 04:33:28,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:33:28,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:33:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1002467120, now seen corresponding path program 1 times [2022-07-14 04:33:28,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:33:28,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033153455] [2022-07-14 04:33:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:33:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:33:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:33:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:33:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:33:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:33:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:33:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 04:33:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-14 04:33:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 04:33:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-14 04:33:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-14 04:33:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 04:33:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-14 04:33:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 04:33:28,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:33:28,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033153455] [2022-07-14 04:33:28,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033153455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:33:28,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:33:28,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 04:33:28,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90594382] [2022-07-14 04:33:28,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:33:28,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 04:33:28,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:33:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 04:33:28,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 04:33:28,419 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) [2022-07-14 04:33:40,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:33:40,949 INFO L93 Difference]: Finished difference Result 37985 states and 57538 transitions. [2022-07-14 04:33:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 04:33:40,950 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 [2022-07-14 04:33:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:33:41,059 INFO L225 Difference]: With dead ends: 37985 [2022-07-14 04:33:41,060 INFO L226 Difference]: Without dead ends: 19709 [2022-07-14 04:33:41,137 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 [2022-07-14 04:33:41,138 INFO L413 NwaCegarLoop]: 7229 mSDtfsCounter, 9333 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 8839 mSolverCounterSat, 5217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9567 SdHoareTripleChecker+Valid, 15333 SdHoareTripleChecker+Invalid, 14056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5217 IncrementalHoareTripleChecker+Valid, 8839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-07-14 04:33:41,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9567 Valid, 15333 Invalid, 14056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5217 Valid, 8839 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-07-14 04:33:41,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19709 states. [2022-07-14 04:33:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19709 to 18287. [2022-07-14 04:33:41,863 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) [2022-07-14 04:33:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18287 states to 18287 states and 27490 transitions. [2022-07-14 04:33:41,947 INFO L78 Accepts]: Start accepts. Automaton has 18287 states and 27490 transitions. Word has length 98 [2022-07-14 04:33:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:33:41,947 INFO L495 AbstractCegarLoop]: Abstraction has 18287 states and 27490 transitions. [2022-07-14 04:33:41,948 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) [2022-07-14 04:33:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 18287 states and 27490 transitions. [2022-07-14 04:33:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-14 04:33:41,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:33:41,950 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] [2022-07-14 04:33:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-14 04:33:41,950 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:33:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:33:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash 593642895, now seen corresponding path program 1 times [2022-07-14 04:33:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:33:41,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38114029] [2022-07-14 04:33:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:33:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:33:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:33:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:33:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:33:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:33:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:33:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 04:33:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-14 04:33:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 04:33:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-14 04:33:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-14 04:33:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 04:33:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-14 04:33:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 04:33:42,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:33:42,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38114029] [2022-07-14 04:33:42,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38114029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:33:42,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:33:42,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 04:33:42,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319712197] [2022-07-14 04:33:42,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:33:42,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 04:33:42,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:33:42,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 04:33:42,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-14 04:33:42,148 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) [2022-07-14 04:33:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:33:57,908 INFO L93 Difference]: Finished difference Result 24849 states and 38058 transitions. [2022-07-14 04:33:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 04:33:57,908 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 [2022-07-14 04:33:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:33:58,010 INFO L225 Difference]: With dead ends: 24849 [2022-07-14 04:33:58,010 INFO L226 Difference]: Without dead ends: 21136 [2022-07-14 04:33:58,041 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 [2022-07-14 04:33:58,042 INFO L413 NwaCegarLoop]: 5587 mSDtfsCounter, 6929 mSDsluCounter, 16447 mSDsCounter, 0 mSdLazyCounter, 16047 mSolverCounterSat, 3357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6932 SdHoareTripleChecker+Valid, 22034 SdHoareTripleChecker+Invalid, 19404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3357 IncrementalHoareTripleChecker+Valid, 16047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-07-14 04:33:58,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6932 Valid, 22034 Invalid, 19404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3357 Valid, 16047 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2022-07-14 04:33:58,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2022-07-14 04:33:58,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 16117. [2022-07-14 04:33:58,718 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) [2022-07-14 04:33:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16117 states to 16117 states and 24068 transitions. [2022-07-14 04:33:58,792 INFO L78 Accepts]: Start accepts. Automaton has 16117 states and 24068 transitions. Word has length 98 [2022-07-14 04:33:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:33:58,793 INFO L495 AbstractCegarLoop]: Abstraction has 16117 states and 24068 transitions. [2022-07-14 04:33:58,793 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) [2022-07-14 04:33:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 16117 states and 24068 transitions. [2022-07-14 04:33:58,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-14 04:33:58,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:33:58,801 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] [2022-07-14 04:33:58,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 04:33:58,801 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:33:58,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:33:58,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1640846850, now seen corresponding path program 1 times [2022-07-14 04:33:58,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:33:58,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31211172] [2022-07-14 04:33:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:33:58,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:33:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:33:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:33:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:33:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:33:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:33:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 04:33:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-14 04:33:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 04:33:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-14 04:33:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-14 04:33:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 04:33:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-14 04:33:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-14 04:33:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 04:33:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-14 04:33:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-14 04:33:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-14 04:33:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:33:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 04:33:58,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:33:58,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31211172] [2022-07-14 04:33:58,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31211172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:33:58,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:33:58,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 04:33:58,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936703496] [2022-07-14 04:33:58,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:33:58,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 04:33:58,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:33:59,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 04:33:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-14 04:33:59,000 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) [2022-07-14 04:34:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:34:14,372 INFO L93 Difference]: Finished difference Result 26996 states and 41029 transitions. [2022-07-14 04:34:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 04:34:14,373 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 [2022-07-14 04:34:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:34:14,471 INFO L225 Difference]: With dead ends: 26996 [2022-07-14 04:34:14,471 INFO L226 Difference]: Without dead ends: 21120 [2022-07-14 04:34:14,503 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 [2022-07-14 04:34:14,504 INFO L413 NwaCegarLoop]: 5577 mSDtfsCounter, 7857 mSDsluCounter, 15493 mSDsCounter, 0 mSdLazyCounter, 15930 mSolverCounterSat, 3454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7860 SdHoareTripleChecker+Valid, 21070 SdHoareTripleChecker+Invalid, 19384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3454 IncrementalHoareTripleChecker+Valid, 15930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-07-14 04:34:14,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7860 Valid, 21070 Invalid, 19384 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3454 Valid, 15930 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2022-07-14 04:34:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21120 states. [2022-07-14 04:34:15,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21120 to 16101. [2022-07-14 04:34:15,174 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) [2022-07-14 04:34:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16101 states to 16101 states and 24040 transitions. [2022-07-14 04:34:15,249 INFO L78 Accepts]: Start accepts. Automaton has 16101 states and 24040 transitions. Word has length 126 [2022-07-14 04:34:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:34:15,250 INFO L495 AbstractCegarLoop]: Abstraction has 16101 states and 24040 transitions. [2022-07-14 04:34:15,250 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) [2022-07-14 04:34:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand 16101 states and 24040 transitions. [2022-07-14 04:34:15,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-14 04:34:15,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:34:15,263 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] [2022-07-14 04:34:15,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-14 04:34:15,263 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:34:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:34:15,264 INFO L85 PathProgramCache]: Analyzing trace with hash 94627519, now seen corresponding path program 1 times [2022-07-14 04:34:15,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:34:15,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113237352] [2022-07-14 04:34:15,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:34:15,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:34:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:34:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:34:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:34:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:34:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:34:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 04:34:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 04:34:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 04:34:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 04:34:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 04:34:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 04:34:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 04:34:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 04:34:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 04:34:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-14 04:34:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-14 04:34:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-14 04:34:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-14 04:34:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-14 04:34:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-14 04:34:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-14 04:34:15,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:34:15,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113237352] [2022-07-14 04:34:15,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113237352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:34:15,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:34:15,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 04:34:15,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947598763] [2022-07-14 04:34:15,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:34:15,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 04:34:15,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:34:15,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 04:34:15,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-14 04:34:15,515 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) [2022-07-14 04:34:29,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:34:29,524 INFO L93 Difference]: Finished difference Result 33359 states and 50181 transitions. [2022-07-14 04:34:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 04:34:29,524 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 [2022-07-14 04:34:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:34:29,627 INFO L225 Difference]: With dead ends: 33359 [2022-07-14 04:34:29,627 INFO L226 Difference]: Without dead ends: 17279 [2022-07-14 04:34:29,684 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 [2022-07-14 04:34:29,685 INFO L413 NwaCegarLoop]: 4308 mSDtfsCounter, 5140 mSDsluCounter, 11093 mSDsCounter, 0 mSdLazyCounter, 15083 mSolverCounterSat, 3028 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5140 SdHoareTripleChecker+Valid, 15401 SdHoareTripleChecker+Invalid, 18111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3028 IncrementalHoareTripleChecker+Valid, 15083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-07-14 04:34:29,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5140 Valid, 15401 Invalid, 18111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3028 Valid, 15083 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-07-14 04:34:29,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17279 states. [2022-07-14 04:34:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17279 to 16095. [2022-07-14 04:34:30,224 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) [2022-07-14 04:34:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16095 states to 16095 states and 24018 transitions. [2022-07-14 04:34:30,294 INFO L78 Accepts]: Start accepts. Automaton has 16095 states and 24018 transitions. Word has length 146 [2022-07-14 04:34:30,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:34:30,294 INFO L495 AbstractCegarLoop]: Abstraction has 16095 states and 24018 transitions. [2022-07-14 04:34:30,294 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) [2022-07-14 04:34:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 16095 states and 24018 transitions. [2022-07-14 04:34:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-14 04:34:30,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:34:30,313 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] [2022-07-14 04:34:30,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-14 04:34:30,313 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:34:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:34:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1735475427, now seen corresponding path program 1 times [2022-07-14 04:34:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:34:30,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132326105] [2022-07-14 04:34:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:34:30,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:34:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:34:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:34:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:34:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:34:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:34:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 04:34:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 04:34:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 04:34:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 04:34:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 04:34:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 04:34:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-14 04:34:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-14 04:34:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-14 04:34:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-14 04:34:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-14 04:34:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-14 04:34:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 04:34:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-14 04:34:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-14 04:34:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-14 04:34:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-14 04:34:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-14 04:34:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-14 04:34:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-14 04:34:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-14 04:34:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:34:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-14 04:34:30,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:34:30,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132326105] [2022-07-14 04:34:30,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132326105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:34:30,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:34:30,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 04:34:30,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862706554] [2022-07-14 04:34:30,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:34:30,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 04:34:30,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:34:30,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 04:34:30,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-14 04:34:30,699 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) [2022-07-14 04:34:37,547 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 [] [2022-07-14 04:34:50,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 04:34:54,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-14 04:34:58,993 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 [] [2022-07-14 04:35:00,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:35:00,110 INFO L93 Difference]: Finished difference Result 41019 states and 63688 transitions. [2022-07-14 04:35:00,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 04:35:00,111 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 [2022-07-14 04:35:00,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:35:00,251 INFO L225 Difference]: With dead ends: 41019 [2022-07-14 04:35:00,251 INFO L226 Difference]: Without dead ends: 24979 [2022-07-14 04:35:00,311 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 [2022-07-14 04:35:00,312 INFO L413 NwaCegarLoop]: 5294 mSDtfsCounter, 9228 mSDsluCounter, 11926 mSDsCounter, 0 mSdLazyCounter, 13760 mSolverCounterSat, 5508 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9254 SdHoareTripleChecker+Valid, 17220 SdHoareTripleChecker+Invalid, 19272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5508 IncrementalHoareTripleChecker+Valid, 13760 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-07-14 04:35:00,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9254 Valid, 17220 Invalid, 19272 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5508 Valid, 13760 Invalid, 4 Unknown, 0 Unchecked, 27.8s Time] [2022-07-14 04:35:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24979 states. [2022-07-14 04:35:01,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24979 to 16103. [2022-07-14 04:35:01,118 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) [2022-07-14 04:35:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16103 states to 16103 states and 24026 transitions. [2022-07-14 04:35:01,185 INFO L78 Accepts]: Start accepts. Automaton has 16103 states and 24026 transitions. Word has length 193 [2022-07-14 04:35:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:35:01,186 INFO L495 AbstractCegarLoop]: Abstraction has 16103 states and 24026 transitions. [2022-07-14 04:35:01,186 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) [2022-07-14 04:35:01,186 INFO L276 IsEmpty]: Start isEmpty. Operand 16103 states and 24026 transitions. [2022-07-14 04:35:01,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-14 04:35:01,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:35:01,201 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] [2022-07-14 04:35:01,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-14 04:35:01,201 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:35:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:35:01,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2120771259, now seen corresponding path program 1 times [2022-07-14 04:35:01,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:35:01,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406600926] [2022-07-14 04:35:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:35:01,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:35:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:35:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:35:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:35:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:35:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:35:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 04:35:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 04:35:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 04:35:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 04:35:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 04:35:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 04:35:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-14 04:35:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-14 04:35:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-14 04:35:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-14 04:35:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-14 04:35:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-14 04:35:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-14 04:35:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-14 04:35:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-14 04:35:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-14 04:35:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-14 04:35:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-14 04:35:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-14 04:35:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-14 04:35:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-14 04:35:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-14 04:35:01,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:35:01,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406600926] [2022-07-14 04:35:01,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406600926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:35:01,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:35:01,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 04:35:01,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679627417] [2022-07-14 04:35:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:35:01,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 04:35:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:35:01,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 04:35:01,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-14 04:35:01,472 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) [2022-07-14 04:35:10,837 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 [] [2022-07-14 04:35:16,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 04:35:26,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-14 04:35:29,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 04:35:31,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:35:31,396 INFO L93 Difference]: Finished difference Result 36027 states and 55309 transitions. [2022-07-14 04:35:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 04:35:31,398 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 [2022-07-14 04:35:31,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:35:31,489 INFO L225 Difference]: With dead ends: 36027 [2022-07-14 04:35:31,490 INFO L226 Difference]: Without dead ends: 19947 [2022-07-14 04:35:31,538 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 [2022-07-14 04:35:31,538 INFO L413 NwaCegarLoop]: 4171 mSDtfsCounter, 6663 mSDsluCounter, 13852 mSDsCounter, 0 mSdLazyCounter, 22013 mSolverCounterSat, 4793 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6664 SdHoareTripleChecker+Valid, 18023 SdHoareTripleChecker+Invalid, 26808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4793 IncrementalHoareTripleChecker+Valid, 22013 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2022-07-14 04:35:31,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6664 Valid, 18023 Invalid, 26808 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4793 Valid, 22013 Invalid, 2 Unknown, 0 Unchecked, 28.5s Time] [2022-07-14 04:35:31,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19947 states. [2022-07-14 04:35:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19947 to 16117. [2022-07-14 04:35:32,132 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) [2022-07-14 04:35:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16117 states to 16117 states and 24040 transitions. [2022-07-14 04:35:32,203 INFO L78 Accepts]: Start accepts. Automaton has 16117 states and 24040 transitions. Word has length 194 [2022-07-14 04:35:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:35:32,204 INFO L495 AbstractCegarLoop]: Abstraction has 16117 states and 24040 transitions. [2022-07-14 04:35:32,204 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) [2022-07-14 04:35:32,204 INFO L276 IsEmpty]: Start isEmpty. Operand 16117 states and 24040 transitions. [2022-07-14 04:35:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-14 04:35:32,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:35:32,238 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] [2022-07-14 04:35:32,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-14 04:35:32,238 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:35:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:35:32,239 INFO L85 PathProgramCache]: Analyzing trace with hash -807176600, now seen corresponding path program 1 times [2022-07-14 04:35:32,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:35:32,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973469262] [2022-07-14 04:35:32,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:35:32,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:35:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:35:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:35:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:35:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:35:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:35:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 04:35:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 04:35:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 04:35:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 04:35:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 04:35:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 04:35:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-14 04:35:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-14 04:35:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-14 04:35:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-14 04:35:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-14 04:35:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-14 04:35:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:35:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 04:35:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 04:35:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-14 04:35:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-14 04:35:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:35:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 04:35:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-14 04:35:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 04:35:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-14 04:35:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-14 04:35:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-14 04:35:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-14 04:35:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-14 04:35:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-14 04:35:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-14 04:35:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-14 04:35:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-14 04:35:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-14 04:35:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-14 04:35:32,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:35:32,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973469262] [2022-07-14 04:35:32,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973469262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:35:32,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 04:35:32,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 04:35:32,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183818599] [2022-07-14 04:35:32,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:35:32,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 04:35:32,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:35:32,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 04:35:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-14 04:35:32,589 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) [2022-07-14 04:35:39,819 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 [] [2022-07-14 04:35:44,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 04:35:51,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-14 04:35:54,961 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 [] [2022-07-14 04:35:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:35:58,367 INFO L93 Difference]: Finished difference Result 40575 states and 62936 transitions. [2022-07-14 04:35:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 04:35:58,368 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 [2022-07-14 04:35:58,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:35:58,492 INFO L225 Difference]: With dead ends: 40575 [2022-07-14 04:35:58,492 INFO L226 Difference]: Without dead ends: 24513 [2022-07-14 04:35:58,553 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 [2022-07-14 04:35:58,553 INFO L413 NwaCegarLoop]: 5668 mSDtfsCounter, 7771 mSDsluCounter, 11368 mSDsCounter, 0 mSdLazyCounter, 11044 mSolverCounterSat, 4695 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8001 SdHoareTripleChecker+Valid, 17036 SdHoareTripleChecker+Invalid, 15742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4695 IncrementalHoareTripleChecker+Valid, 11044 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2022-07-14 04:35:58,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8001 Valid, 17036 Invalid, 15742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4695 Valid, 11044 Invalid, 3 Unknown, 0 Unchecked, 24.3s Time] [2022-07-14 04:35:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24513 states. [2022-07-14 04:35:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24513 to 16133. [2022-07-14 04:35:59,400 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) [2022-07-14 04:35:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 24056 transitions. [2022-07-14 04:35:59,471 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 24056 transitions. Word has length 262 [2022-07-14 04:35:59,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:35:59,472 INFO L495 AbstractCegarLoop]: Abstraction has 16133 states and 24056 transitions. [2022-07-14 04:35:59,472 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) [2022-07-14 04:35:59,472 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 24056 transitions. [2022-07-14 04:35:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-14 04:35:59,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:35:59,499 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] [2022-07-14 04:35:59,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-14 04:35:59,499 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:35:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:35:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash 985862892, now seen corresponding path program 1 times [2022-07-14 04:35:59,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:35:59,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662664641] [2022-07-14 04:35:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:35:59,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:35:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:35:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:35:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:35:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:35:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:35:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 04:35:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 04:35:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 04:35:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 04:35:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 04:35:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 04:35:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-14 04:35:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-14 04:35:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-14 04:35:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-14 04:35:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-14 04:35:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-14 04:35:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:35:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 04:35:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 04:35:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-14 04:35:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-14 04:35:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:35:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 04:35:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-14 04:35:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 04:35:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-14 04:35:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-14 04:35:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-14 04:35:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-14 04:35:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-14 04:35:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-14 04:35:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-14 04:35:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-14 04:35:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-14 04:35:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-14 04:35:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:35:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-14 04:35:59,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:35:59,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662664641] [2022-07-14 04:35:59,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662664641] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 04:35:59,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828291827] [2022-07-14 04:35:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:35:59,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 04:35:59,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 04:35:59,868 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) [2022-07-14 04:35:59,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 04:36:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:00,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3539 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 04:36:00,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 04:36:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-14 04:36:00,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 04:36:00,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828291827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 04:36:00,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 04:36:00,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-14 04:36:00,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345513187] [2022-07-14 04:36:00,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 04:36:00,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 04:36:00,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:36:00,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 04:36:00,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-14 04:36:00,971 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) [2022-07-14 04:36:01,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 04:36:01,755 INFO L93 Difference]: Finished difference Result 32219 states and 49028 transitions. [2022-07-14 04:36:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 04:36:01,759 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 [2022-07-14 04:36:01,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 04:36:01,813 INFO L225 Difference]: With dead ends: 32219 [2022-07-14 04:36:01,813 INFO L226 Difference]: Without dead ends: 16141 [2022-07-14 04:36:01,860 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 [2022-07-14 04:36:01,860 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 [2022-07-14 04:36:01,861 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] [2022-07-14 04:36:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16141 states. [2022-07-14 04:36:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16141 to 16133. [2022-07-14 04:36:02,484 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) [2022-07-14 04:36:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 24032 transitions. [2022-07-14 04:36:02,554 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 24032 transitions. Word has length 264 [2022-07-14 04:36:02,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 04:36:02,554 INFO L495 AbstractCegarLoop]: Abstraction has 16133 states and 24032 transitions. [2022-07-14 04:36:02,555 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) [2022-07-14 04:36:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 24032 transitions. [2022-07-14 04:36:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-14 04:36:02,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 04:36:02,579 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] [2022-07-14 04:36:02,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 04:36:02,795 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 [2022-07-14 04:36:02,796 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 04:36:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 04:36:02,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2129056059, now seen corresponding path program 1 times [2022-07-14 04:36:02,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 04:36:02,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854280704] [2022-07-14 04:36:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:36:02,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 04:36:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:36:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 04:36:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 04:36:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:36:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 04:36:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 04:36:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 04:36:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 04:36:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 04:36:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 04:36:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 04:36:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-14 04:36:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-14 04:36:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-14 04:36:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-14 04:36:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-14 04:36:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-14 04:36:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 04:36:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 04:36:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 04:36:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-14 04:36:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-14 04:36:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 04:36:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 04:36:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 04:36:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 04:36:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-14 04:36:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-14 04:36:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-14 04:36:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-14 04:36:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-14 04:36:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-14 04:36:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-14 04:36:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-14 04:36:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-14 04:36:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-14 04:36:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-14 04:36:03,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 04:36:03,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854280704] [2022-07-14 04:36:03,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854280704] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 04:36:03,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757119346] [2022-07-14 04:36:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 04:36:03,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 04:36:03,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 04:36:03,106 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) [2022-07-14 04:36:03,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 04:36:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 04:36:04,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 3545 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 04:36:04,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 04:36:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-14 04:36:04,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 04:36:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-14 04:36:04,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757119346] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 04:36:04,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 04:36:04,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 12 [2022-07-14 04:36:04,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962512542] [2022-07-14 04:36:04,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 04:36:04,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 04:36:04,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 04:36:04,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 04:36:04,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-07-14 04:36:04,339 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)