./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--mpt2sas--mpt2sas.ko-ldv_main4_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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--mpt2sas--mpt2sas.ko-ldv_main4_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 fcc9c58d9e7d331b03ac2a1d31f7075375278be740d6cb0fb532894b4718ca6e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 15:14:50,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 15:14:50,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 15:14:50,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 15:14:50,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 15:14:50,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 15:14:50,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 15:14:50,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 15:14:50,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 15:14:50,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 15:14:50,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 15:14:50,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 15:14:50,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 15:14:50,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 15:14:50,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 15:14:50,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 15:14:50,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 15:14:50,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 15:14:50,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 15:14:50,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 15:14:50,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 15:14:50,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 15:14:50,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 15:14:50,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 15:14:50,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 15:14:50,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 15:14:50,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 15:14:50,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 15:14:50,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 15:14:50,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 15:14:50,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 15:14:50,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 15:14:50,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 15:14:50,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 15:14:50,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 15:14:50,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 15:14:50,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 15:14:50,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 15:14:50,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 15:14:50,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 15:14:50,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 15:14:50,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 15:14:50,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 15:14:50,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 15:14:50,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 15:14:50,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 15:14:50,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 15:14:50,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 15:14:50,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 15:14:50,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 15:14:50,289 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 15:14:50,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 15:14:50,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 15:14:50,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 15:14:50,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 15:14:50,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 15:14:50,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 15:14:50,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 15:14:50,291 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 15:14:50,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 15:14:50,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 15:14:50,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 15:14:50,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 15:14:50,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 15:14:50,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 15:14:50,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 15:14:50,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 15:14:50,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 15:14:50,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 15:14:50,292 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 15:14:50,293 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 15:14:50,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 15:14:50,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 15:14:50,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcc9c58d9e7d331b03ac2a1d31f7075375278be740d6cb0fb532894b4718ca6e [2021-12-18 15:14:50,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 15:14:50,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 15:14:50,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 15:14:50,515 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 15:14:50,516 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 15:14:50,517 INFO L432 ainManager$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--mpt2sas--mpt2sas.ko-ldv_main4_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-18 15:14:50,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28f486d5a/8313554d2bb445b59bc73aa6f25a584e/FLAG475d15ba8 [2021-12-18 15:14:51,399 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 15:14:51,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--mpt2sas--mpt2sas.ko-ldv_main4_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-18 15:14:51,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28f486d5a/8313554d2bb445b59bc73aa6f25a584e/FLAG475d15ba8 [2021-12-18 15:14:51,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28f486d5a/8313554d2bb445b59bc73aa6f25a584e [2021-12-18 15:14:51,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 15:14:51,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 15:14:51,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 15:14:51,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 15:14:51,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 15:14:51,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:14:51" (1/1) ... [2021-12-18 15:14:51,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152d3728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:14:51, skipping insertion in model container [2021-12-18 15:14:51,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:14:51" (1/1) ... [2021-12-18 15:14:51,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 15:14:52,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 15:14:58,861 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--mpt2sas--mpt2sas.ko-ldv_main4_sequence_infinite_withcheck_stateful.cil.out.i[890446,890459] [2021-12-18 15:14:59,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 15:14:59,046 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 15:14:59,678 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--mpt2sas--mpt2sas.ko-ldv_main4_sequence_infinite_withcheck_stateful.cil.out.i[890446,890459] [2021-12-18 15:14:59,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 15:15:00,040 INFO L208 MainTranslator]: Completed translation [2021-12-18 15:15:00,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00 WrapperNode [2021-12-18 15:15:00,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 15:15:00,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 15:15:00,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 15:15:00,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 15:15:00,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (1/1) ... [2021-12-18 15:15:00,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (1/1) ... [2021-12-18 15:15:00,579 INFO L137 Inliner]: procedures = 757, calls = 11058, calls flagged for inlining = 310, calls inlined = 146, statements flattened = 13554 [2021-12-18 15:15:00,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 15:15:00,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 15:15:00,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 15:15:00,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 15:15:00,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (1/1) ... [2021-12-18 15:15:00,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (1/1) ... [2021-12-18 15:15:00,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (1/1) ... [2021-12-18 15:15:00,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (1/1) ... [2021-12-18 15:15:00,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (1/1) ... [2021-12-18 15:15:00,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (1/1) ... [2021-12-18 15:15:01,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (1/1) ... [2021-12-18 15:15:01,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 15:15:01,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 15:15:01,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 15:15:01,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 15:15:01,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (1/1) ... [2021-12-18 15:15:01,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 15:15:01,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:15:01,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 15:15:01,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 15:15:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_expander_remove [2021-12-18 15:15:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_expander_remove [2021-12-18 15:15:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure _base_event_notification [2021-12-18 15:15:01,390 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_event_notification [2021-12-18 15:15:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure sas_phy_alloc [2021-12-18 15:15:01,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_phy_alloc [2021-12-18 15:15:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~dma_addr_t~0~TO~VOID [2021-12-18 15:15:01,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~dma_addr_t~0~TO~VOID [2021-12-18 15:15:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_check_device [2021-12-18 15:15:01,390 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_check_device [2021-12-18 15:15:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_scsih_sas_device_find_by_sas_address [2021-12-18 15:15:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_scsih_sas_device_find_by_sas_address [2021-12-18 15:15:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_get_state [2021-12-18 15:15:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_get_state [2021-12-18 15:15:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_init_warpdrive_properties [2021-12-18 15:15:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_init_warpdrive_properties [2021-12-18 15:15:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure _base_handshake_req_reply_wait [2021-12-18 15:15:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_handshake_req_reply_wait [2021-12-18 15:15:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_prep_device_scan [2021-12-18 15:15:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_prep_device_scan [2021-12-18 15:15:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 15:15:01,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 15:15:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure _base_writeq [2021-12-18 15:15:01,392 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_writeq [2021-12-18 15:15:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_topology_change_event [2021-12-18 15:15:01,392 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_topology_change_event [2021-12-18 15:15:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-12-18 15:15:01,392 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-12-18 15:15:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure sas_phy_free [2021-12-18 15:15:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_phy_free [2021-12-18 15:15:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of__internal_cmd [2021-12-18 15:15:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of__internal_cmd [2021-12-18 15:15:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure _config_request [2021-12-18 15:15:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure _config_request [2021-12-18 15:15:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-18 15:15:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-18 15:15:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_device_remove_by_handle [2021-12-18 15:15:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_device_remove_by_handle [2021-12-18 15:15:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_pcie_error_reporting [2021-12-18 15:15:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_pcie_error_reporting [2021-12-18 15:15:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure _ctl_do_mpt_command [2021-12-18 15:15:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure _ctl_do_mpt_command [2021-12-18 15:15:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure sas_phy_add [2021-12-18 15:15:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_phy_add [2021-12-18 15:15:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_number_pds [2021-12-18 15:15:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_number_pds [2021-12-18 15:15:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_scan_start [2021-12-18 15:15:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_scan_start [2021-12-18 15:15:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 15:15:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 15:15:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2021-12-18 15:15:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2021-12-18 15:15:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_raid_device_add [2021-12-18 15:15:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_raid_device_add [2021-12-18 15:15:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_search_responding_expanders [2021-12-18 15:15:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_search_responding_expanders [2021-12-18 15:15:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_slave_destroy [2021-12-18 15:15:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_slave_destroy [2021-12-18 15:15:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_add_device [2021-12-18 15:15:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_add_device [2021-12-18 15:15:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure _ctl_send_release [2021-12-18 15:15:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure _ctl_send_release [2021-12-18 15:15:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-18 15:15:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-18 15:15:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_ir_shutdown [2021-12-18 15:15:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_ir_shutdown [2021-12-18 15:15:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 15:15:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 15:15:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2021-12-18 15:15:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2021-12-18 15:15:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 15:15:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-18 15:15:01,400 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-18 15:15:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_build_zero_len_sge [2021-12-18 15:15:01,400 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_build_zero_len_sge [2021-12-18 15:15:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_device_add [2021-12-18 15:15:01,401 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_device_add [2021-12-18 15:15:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure _base_make_ioc_ready [2021-12-18 15:15:01,401 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_make_ioc_ready [2021-12-18 15:15:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_scsih_reset_handler [2021-12-18 15:15:01,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_scsih_reset_handler [2021-12-18 15:15:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_remove_device [2021-12-18 15:15:01,401 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_remove_device [2021-12-18 15:15:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_volume_wwid [2021-12-18 15:15:01,402 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_volume_wwid [2021-12-18 15:15:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-18 15:15:01,402 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-18 15:15:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_remove_target [2021-12-18 15:15:01,402 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_remove_target [2021-12-18 15:15:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 15:15:01,403 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 15:15:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_shutdown [2021-12-18 15:15:01,403 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_shutdown [2021-12-18 15:15:01,403 INFO L130 BoogieDeclarations]: Found specification of procedure _base_free_irq [2021-12-18 15:15:01,403 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_free_irq [2021-12-18 15:15:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 15:15:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-18 15:15:01,404 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-18 15:15:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure _ctl_display_some_debug [2021-12-18 15:15:01,404 INFO L138 BoogieDeclarations]: Found implementation of procedure _ctl_display_some_debug [2021-12-18 15:15:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 15:15:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 15:15:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-18 15:15:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-18 15:15:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure _ctl_ioctl_main [2021-12-18 15:15:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure _ctl_ioctl_main [2021-12-18 15:15:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 15:15:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_transport_add_expander_phy [2021-12-18 15:15:01,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_transport_add_expander_phy [2021-12-18 15:15:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure _base_wait_for_doorbell_ack [2021-12-18 15:15:01,406 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_wait_for_doorbell_ack [2021-12-18 15:15:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_transport_add_host_phy [2021-12-18 15:15:01,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_transport_add_host_phy [2021-12-18 15:15:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-12-18 15:15:01,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-12-18 15:15:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 15:15:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_manufacturing_pg0 [2021-12-18 15:15:01,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_manufacturing_pg0 [2021-12-18 15:15:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure _base_disable_msix [2021-12-18 15:15:01,408 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_disable_msix [2021-12-18 15:15:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_ublock_io_device [2021-12-18 15:15:01,408 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_ublock_io_device [2021-12-18 15:15:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_detach [2021-12-18 15:15:01,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_detach [2021-12-18 15:15:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 15:15:01,409 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 15:15:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_manufacturing_pg10 [2021-12-18 15:15:01,409 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_manufacturing_pg10 [2021-12-18 15:15:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-12-18 15:15:01,410 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-12-18 15:15:01,410 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_scsi_lookup_get_clear [2021-12-18 15:15:01,410 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_scsi_lookup_get_clear [2021-12-18 15:15:01,410 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_disable_ddio [2021-12-18 15:15:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_disable_ddio [2021-12-18 15:15:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure _ctl_diag_capability [2021-12-18 15:15:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure _ctl_diag_capability [2021-12-18 15:15:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_internal_device_unblock [2021-12-18 15:15:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_internal_device_unblock [2021-12-18 15:15:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure _debug_dump_mf [2021-12-18 15:15:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure _debug_dump_mf [2021-12-18 15:15:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-18 15:15:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-18 15:15:01,412 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_raid_device_remove [2021-12-18 15:15:01,412 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_raid_device_remove [2021-12-18 15:15:01,412 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-18 15:15:01,412 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-18 15:15:01,412 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-18 15:15:01,412 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-18 15:15:01,412 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-18 15:15:01,412 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-18 15:15:01,412 INFO L130 BoogieDeclarations]: Found specification of procedure _firmware_event_work [2021-12-18 15:15:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure _firmware_event_work [2021-12-18 15:15:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_is_host_device [2021-12-18 15:15:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_is_host_device [2021-12-18 15:15:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-12-18 15:15:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-12-18 15:15:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_target [2021-12-18 15:15:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_target [2021-12-18 15:15:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_get_smid_scsiio [2021-12-18 15:15:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_get_smid_scsiio [2021-12-18 15:15:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-12-18 15:15:01,414 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-12-18 15:15:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 15:15:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-12-18 15:15:01,414 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-12-18 15:15:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure _transport_convert_phy_link_rate [2021-12-18 15:15:01,414 INFO L138 BoogieDeclarations]: Found implementation of procedure _transport_convert_phy_link_rate [2021-12-18 15:15:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_ir_config_change_event [2021-12-18 15:15:01,414 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_ir_config_change_event [2021-12-18 15:15:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_fault_info [2021-12-18 15:15:01,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_fault_info [2021-12-18 15:15:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 15:15:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 15:15:01,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 15:15:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_get_sas_address [2021-12-18 15:15:01,415 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_get_sas_address [2021-12-18 15:15:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_sas_iounit_pg1 [2021-12-18 15:15:01,415 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_sas_iounit_pg1 [2021-12-18 15:15:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 15:15:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_pd_add [2021-12-18 15:15:01,416 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_pd_add [2021-12-18 15:15:01,416 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_sas_iounit_pg0 [2021-12-18 15:15:01,416 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_sas_iounit_pg0 [2021-12-18 15:15:01,416 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 15:15:01,416 INFO L130 BoogieDeclarations]: Found specification of procedure _transport_set_identify [2021-12-18 15:15:01,416 INFO L138 BoogieDeclarations]: Found implementation of procedure _transport_set_identify [2021-12-18 15:15:01,416 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 15:15:01,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 15:15:01,416 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_enable_diag_buffer [2021-12-18 15:15:01,416 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_enable_diag_buffer [2021-12-18 15:15:01,417 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2021-12-18 15:15:01,417 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2021-12-18 15:15:01,417 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_host_refresh [2021-12-18 15:15:01,417 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_host_refresh [2021-12-18 15:15:01,417 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_set_iounit_pg1 [2021-12-18 15:15:01,417 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_set_iounit_pg1 [2021-12-18 15:15:01,417 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_raid_device_find_by_wwid [2021-12-18 15:15:01,417 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_raid_device_find_by_wwid [2021-12-18 15:15:01,417 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_scsi_enclosure_processor [2021-12-18 15:15:01,418 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_scsi_enclosure_processor [2021-12-18 15:15:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_pd_hide [2021-12-18 15:15:01,418 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_pd_hide [2021-12-18 15:15:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_transport_update_links [2021-12-18 15:15:01,418 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_transport_update_links [2021-12-18 15:15:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_turn_on_fault_led [2021-12-18 15:15:01,418 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_turn_on_fault_led [2021-12-18 15:15:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure _base_wait_for_doorbell_int [2021-12-18 15:15:01,418 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_wait_for_doorbell_int [2021-12-18 15:15:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_get_resync [2021-12-18 15:15:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_get_resync [2021-12-18 15:15:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of__internal_cmd [2021-12-18 15:15:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of__internal_cmd [2021-12-18 15:15:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_check_access_status [2021-12-18 15:15:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_check_access_status [2021-12-18 15:15:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_volume_handle [2021-12-18 15:15:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_volume_handle [2021-12-18 15:15:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_expander_pg0 [2021-12-18 15:15:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_expander_pg0 [2021-12-18 15:15:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_expander_pg1 [2021-12-18 15:15:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_expander_pg1 [2021-12-18 15:15:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-18 15:15:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-18 15:15:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 15:15:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 15:15:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_get_smid_hpr [2021-12-18 15:15:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_get_smid_hpr [2021-12-18 15:15:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_raid_device_find_by_handle [2021-12-18 15:15:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_raid_device_find_by_handle [2021-12-18 15:15:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of__internal_cmd [2021-12-18 15:15:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of__internal_cmd [2021-12-18 15:15:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_device_remove_by_sas_address [2021-12-18 15:15:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_device_remove_by_sas_address [2021-12-18 15:15:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-12-18 15:15:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-12-18 15:15:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure _base_reset_handler [2021-12-18 15:15:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_reset_handler [2021-12-18 15:15:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_hard_reset_handler [2021-12-18 15:15:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_hard_reset_handler [2021-12-18 15:15:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-12-18 15:15:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-12-18 15:15:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure _base_get_msix_index [2021-12-18 15:15:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_get_msix_index [2021-12-18 15:15:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-18 15:15:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-18 15:15:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 15:15:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 15:15:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-18 15:15:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-18 15:15:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2021-12-18 15:15:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2021-12-18 15:15:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_discovery_event [2021-12-18 15:15:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_discovery_event [2021-12-18 15:15:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure _base_make_ioc_operational [2021-12-18 15:15:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_make_ioc_operational [2021-12-18 15:15:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 15:15:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 15:15:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_transport_port_remove [2021-12-18 15:15:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_transport_port_remove [2021-12-18 15:15:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_free_resources [2021-12-18 15:15:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_free_resources [2021-12-18 15:15:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 15:15:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 15:15:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_get_num_volumes [2021-12-18 15:15:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_get_num_volumes [2021-12-18 15:15:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure _ctl_diag_register_2 [2021-12-18 15:15:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure _ctl_diag_register_2 [2021-12-18 15:15:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_transport_port_add [2021-12-18 15:15:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_transport_port_add [2021-12-18 15:15:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_number_hba_phys [2021-12-18 15:15:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_number_hba_phys [2021-12-18 15:15:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-18 15:15:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-18 15:15:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 15:15:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 15:15:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_raid_device_find_by_id [2021-12-18 15:15:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_raid_device_find_by_id [2021-12-18 15:15:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_is_boot_device [2021-12-18 15:15:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_is_boot_device [2021-12-18 15:15:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure int_to_scsilun [2021-12-18 15:15:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure int_to_scsilun [2021-12-18 15:15:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-12-18 15:15:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-12-18 15:15:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-18 15:15:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-18 15:15:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-12-18 15:15:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure _base_release_memory_pools [2021-12-18 15:15:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_release_memory_pools [2021-12-18 15:15:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure _debug_dump_mf___1 [2021-12-18 15:15:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure _debug_dump_mf___1 [2021-12-18 15:15:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure attribute_container_find_class_device [2021-12-18 15:15:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure attribute_container_find_class_device [2021-12-18 15:15:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure _debug_dump_mf___3 [2021-12-18 15:15:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure _debug_dump_mf___3 [2021-12-18 15:15:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure _debug_dump_mf___2 [2021-12-18 15:15:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure _debug_dump_mf___2 [2021-12-18 15:15:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_get_sense_buffer_dma [2021-12-18 15:15:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_get_sense_buffer_dma [2021-12-18 15:15:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_put_smid_default [2021-12-18 15:15:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_put_smid_default [2021-12-18 15:15:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_start_watchdog [2021-12-18 15:15:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_start_watchdog [2021-12-18 15:15:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_host_add [2021-12-18 15:15:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_host_add [2021-12-18 15:15:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2021-12-18 15:15:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2021-12-18 15:15:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-18 15:15:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-18 15:15:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_remove_host [2021-12-18 15:15:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_remove_host [2021-12-18 15:15:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure __scsi_iterate_devices [2021-12-18 15:15:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __scsi_iterate_devices [2021-12-18 15:15:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 15:15:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 15:15:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 15:15:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 15:15:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_ublock_io_all_device [2021-12-18 15:15:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_ublock_io_all_device [2021-12-18 15:15:01,430 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_broadcast_primitive_event [2021-12-18 15:15:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_broadcast_primitive_event [2021-12-18 15:15:01,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 15:15:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 15:15:01,430 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_get_smid [2021-12-18 15:15:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_get_smid [2021-12-18 15:15:01,430 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-12-18 15:15:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-12-18 15:15:01,430 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-18 15:15:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-18 15:15:01,431 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 15:15:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 15:15:01,431 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_fw_event_free [2021-12-18 15:15:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_fw_event_free [2021-12-18 15:15:01,431 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_mark_responding_raid_device [2021-12-18 15:15:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_mark_responding_raid_device [2021-12-18 15:15:01,431 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_is_end_device [2021-12-18 15:15:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_is_end_device [2021-12-18 15:15:01,431 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_determine_boot_device [2021-12-18 15:15:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_determine_boot_device [2021-12-18 15:15:01,432 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-12-18 15:15:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-12-18 15:15:01,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 15:15:01,432 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 15:15:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 15:15:01,432 INFO L130 BoogieDeclarations]: Found specification of procedure _config_display_some_debug [2021-12-18 15:15:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure _config_display_some_debug [2021-12-18 15:15:01,432 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_phy_pg0 [2021-12-18 15:15:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_phy_pg0 [2021-12-18 15:15:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_stop_watchdog [2021-12-18 15:15:01,433 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_stop_watchdog [2021-12-18 15:15:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 15:15:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_ir_physical_disk_event [2021-12-18 15:15:01,433 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_ir_physical_disk_event [2021-12-18 15:15:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-12-18 15:15:01,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-12-18 15:15:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure starget_for_each_device [2021-12-18 15:15:01,433 INFO L138 BoogieDeclarations]: Found implementation of procedure starget_for_each_device [2021-12-18 15:15:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-18 15:15:01,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-18 15:15:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_halt_firmware [2021-12-18 15:15:01,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_halt_firmware [2021-12-18 15:15:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_device_remove [2021-12-18 15:15:01,434 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_device_remove [2021-12-18 15:15:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_get_msg_frame [2021-12-18 15:15:01,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_get_msg_frame [2021-12-18 15:15:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_ir_volume_event [2021-12-18 15:15:01,434 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_ir_volume_event [2021-12-18 15:15:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure _base_static_config_pages [2021-12-18 15:15:01,435 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_static_config_pages [2021-12-18 15:15:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 15:15:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_add_device [2021-12-18 15:15:01,435 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_add_device [2021-12-18 15:15:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-18 15:15:01,435 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-18 15:15:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-12-18 15:15:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 15:15:01,435 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 15:15:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 15:15:01,436 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 15:15:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_expander_node_remove [2021-12-18 15:15:01,436 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_expander_node_remove [2021-12-18 15:15:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_bios_pg3 [2021-12-18 15:15:01,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_bios_pg3 [2021-12-18 15:15:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_search_responding_raid_devices [2021-12-18 15:15:01,436 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_search_responding_raid_devices [2021-12-18 15:15:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_bios_pg2 [2021-12-18 15:15:01,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_bios_pg2 [2021-12-18 15:15:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure _base_mask_interrupts [2021-12-18 15:15:01,437 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_mask_interrupts [2021-12-18 15:15:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_remove [2021-12-18 15:15:01,437 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_remove [2021-12-18 15:15:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_scan_for_devices_after_reset [2021-12-18 15:15:01,437 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_scan_for_devices_after_reset [2021-12-18 15:15:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-18 15:15:01,437 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-18 15:15:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure _transport_expander_report_manufacture [2021-12-18 15:15:01,437 INFO L138 BoogieDeclarations]: Found implementation of procedure _transport_expander_report_manufacture [2021-12-18 15:15:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-18 15:15:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-18 15:15:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2021-12-18 15:15:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2021-12-18 15:15:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_flush_running_cmds [2021-12-18 15:15:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_flush_running_cmds [2021-12-18 15:15:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_enclosure_pg0 [2021-12-18 15:15:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_enclosure_pg0 [2021-12-18 15:15:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_dma_unmap [2021-12-18 15:15:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_dma_unmap [2021-12-18 15:15:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-12-18 15:15:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-12-18 15:15:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_scsih_set_tm_flag [2021-12-18 15:15:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_scsih_set_tm_flag [2021-12-18 15:15:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_search_responding_sas_devices [2021-12-18 15:15:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_search_responding_sas_devices [2021-12-18 15:15:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_sas_device_pg0 [2021-12-18 15:15:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_sas_device_pg0 [2021-12-18 15:15:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure _base_is_controller_msix_enabled [2021-12-18 15:15:01,440 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_is_controller_msix_enabled [2021-12-18 15:15:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-18 15:15:01,440 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-18 15:15:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure _base_fault_reset_work [2021-12-18 15:15:01,440 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_fault_reset_work [2021-12-18 15:15:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-18 15:15:01,440 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-18 15:15:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_internal_device_block [2021-12-18 15:15:01,440 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_internal_device_block [2021-12-18 15:15:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_device_find_by_handle [2021-12-18 15:15:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_device_find_by_handle [2021-12-18 15:15:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_fw_event_add [2021-12-18 15:15:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_fw_event_add [2021-12-18 15:15:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_free_smid [2021-12-18 15:15:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_free_smid [2021-12-18 15:15:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_scsih_issue_tm [2021-12-18 15:15:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_scsih_issue_tm [2021-12-18 15:15:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_refresh_expander_links [2021-12-18 15:15:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_refresh_expander_links [2021-12-18 15:15:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure sas_port_delete_phy [2021-12-18 15:15:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_port_delete_phy [2021-12-18 15:15:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_get_iocstate [2021-12-18 15:15:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_get_iocstate [2021-12-18 15:15:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 15:15:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 15:15:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-12-18 15:15:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-12-18 15:15:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 15:15:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_scsih_expander_find_by_sas_address [2021-12-18 15:15:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_scsih_expander_find_by_sas_address [2021-12-18 15:15:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_put_smid_hi_priority [2021-12-18 15:15:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_put_smid_hi_priority [2021-12-18 15:15:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 15:15:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 15:15:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure _base_wait_on_iocstate [2021-12-18 15:15:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure _base_wait_on_iocstate [2021-12-18 15:15:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_volume_delete [2021-12-18 15:15:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_volume_delete [2021-12-18 15:15:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_target_destroy [2021-12-18 15:15:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_target_destroy [2021-12-18 15:15:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_fw_event_cleanup_queue [2021-12-18 15:15:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_fw_event_cleanup_queue [2021-12-18 15:15:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_pci_resume [2021-12-18 15:15:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_pci_resume [2021-12-18 15:15:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_sas_volume_add [2021-12-18 15:15:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_sas_volume_add [2021-12-18 15:15:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unblock_requests [2021-12-18 15:15:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unblock_requests [2021-12-18 15:15:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-18 15:15:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-18 15:15:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_raid_volume_pg0 [2021-12-18 15:15:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_raid_volume_pg0 [2021-12-18 15:15:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_raid_volume_pg1 [2021-12-18 15:15:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_raid_volume_pg1 [2021-12-18 15:15:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2021-12-18 15:15:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2021-12-18 15:15:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_base_put_smid_scsi_io [2021-12-18 15:15:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_base_put_smid_scsi_io [2021-12-18 15:15:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_scsih_clear_tm_flag [2021-12-18 15:15:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_scsih_clear_tm_flag [2021-12-18 15:15:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure sas_port_add_phy [2021-12-18 15:15:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_port_add_phy [2021-12-18 15:15:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_shost [2021-12-18 15:15:01,446 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_shost [2021-12-18 15:15:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_phys_disk_pg0 [2021-12-18 15:15:01,446 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_phys_disk_pg0 [2021-12-18 15:15:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_iounit_pg1 [2021-12-18 15:15:01,446 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_iounit_pg1 [2021-12-18 15:15:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-18 15:15:01,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-18 15:15:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_ioc_pg8 [2021-12-18 15:15:01,446 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_ioc_pg8 [2021-12-18 15:15:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_config_get_iounit_pg0 [2021-12-18 15:15:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_config_get_iounit_pg0 [2021-12-18 15:15:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-18 15:15:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-18 15:15:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure _transport_sas_node_find_by_sas_address [2021-12-18 15:15:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure _transport_sas_node_find_by_sas_address [2021-12-18 15:15:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-18 15:15:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-18 15:15:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-18 15:15:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-18 15:15:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-18 15:15:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-18 15:15:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure mpt2sas_scsih_expander_find_by_handle [2021-12-18 15:15:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt2sas_scsih_expander_find_by_handle [2021-12-18 15:15:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 15:15:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_expander_add [2021-12-18 15:15:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_expander_add [2021-12-18 15:15:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure _scsih_response_code [2021-12-18 15:15:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure _scsih_response_code [2021-12-18 15:15:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-18 15:15:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-18 15:15:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-18 15:15:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-12-18 15:15:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-12-18 15:15:02,743 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 15:15:02,746 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 15:15:14,042 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 15:15:14,066 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 15:15:14,067 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-18 15:15:14,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:15:14 BoogieIcfgContainer [2021-12-18 15:15:14,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 15:15:14,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 15:15:14,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 15:15:14,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 15:15:14,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:14:51" (1/3) ... [2021-12-18 15:15:14,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7c6a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:15:14, skipping insertion in model container [2021-12-18 15:15:14,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:00" (2/3) ... [2021-12-18 15:15:14,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7c6a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:15:14, skipping insertion in model container [2021-12-18 15:15:14,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:15:14" (3/3) ... [2021-12-18 15:15:14,079 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--mpt2sas--mpt2sas.ko-ldv_main4_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-18 15:15:14,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 15:15:14,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 15:15:14,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 15:15:14,145 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 15:15:14,145 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 15:15:14,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 5131 states, 3662 states have (on average 1.4120699071545604) internal successors, (5171), 3790 states have internal predecessors, (5171), 1223 states have call successors, (1223), 245 states have call predecessors, (1223), 245 states have return successors, (1223), 1177 states have call predecessors, (1223), 1223 states have call successors, (1223) [2021-12-18 15:15:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 15:15:14,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:15:14,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:15:14,222 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:15:14,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:15:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash -577367309, now seen corresponding path program 1 times [2021-12-18 15:15:14,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:15:14,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796851939] [2021-12-18 15:15:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:15:14,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:15:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:15:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:15:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:15:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:15:14,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:15:14,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796851939] [2021-12-18 15:15:14,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796851939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:15:14,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:15:14,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 15:15:14,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692240814] [2021-12-18 15:15:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:15:14,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:15:14,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:15:14,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:15:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:15:14,852 INFO L87 Difference]: Start difference. First operand has 5131 states, 3662 states have (on average 1.4120699071545604) internal successors, (5171), 3790 states have internal predecessors, (5171), 1223 states have call successors, (1223), 245 states have call predecessors, (1223), 245 states have return successors, (1223), 1177 states have call predecessors, (1223), 1223 states have call successors, (1223) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 15:15:24,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:15:24,373 INFO L93 Difference]: Finished difference Result 11331 states and 17346 transitions. [2021-12-18 15:15:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 15:15:24,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-18 15:15:24,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:15:24,421 INFO L225 Difference]: With dead ends: 11331 [2021-12-18 15:15:24,421 INFO L226 Difference]: Without dead ends: 6194 [2021-12-18 15:15:24,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:15:24,463 INFO L933 BasicCegarLoop]: 6613 mSDtfsCounter, 10867 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 4019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11332 SdHoareTripleChecker+Valid, 6657 SdHoareTripleChecker+Invalid, 8470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4019 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-12-18 15:15:24,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11332 Valid, 6657 Invalid, 8470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4019 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2021-12-18 15:15:24,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2021-12-18 15:15:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 5115. [2021-12-18 15:15:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 3650 states have (on average 1.4106849315068493) internal successors, (5149), 3774 states have internal predecessors, (5149), 1221 states have call successors, (1221), 245 states have call predecessors, (1221), 243 states have return successors, (1211), 1165 states have call predecessors, (1211), 1211 states have call successors, (1211) [2021-12-18 15:15:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 7581 transitions. [2021-12-18 15:15:24,703 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 7581 transitions. Word has length 12 [2021-12-18 15:15:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:15:24,703 INFO L470 AbstractCegarLoop]: Abstraction has 5115 states and 7581 transitions. [2021-12-18 15:15:24,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 15:15:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 7581 transitions. [2021-12-18 15:15:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 15:15:24,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:15:24,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:15:24,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 15:15:24,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:15:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:15:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash -720699983, now seen corresponding path program 1 times [2021-12-18 15:15:24,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:15:24,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428076542] [2021-12-18 15:15:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:15:24,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:15:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:15:25,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:15:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:15:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:15:25,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:15:25,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428076542] [2021-12-18 15:15:25,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428076542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:15:25,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:15:25,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 15:15:25,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129078789] [2021-12-18 15:15:25,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:15:25,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:15:25,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:15:25,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:15:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:15:25,080 INFO L87 Difference]: Start difference. First operand 5115 states and 7581 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 15:15:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:15:40,798 INFO L93 Difference]: Finished difference Result 14792 states and 22431 transitions. [2021-12-18 15:15:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 15:15:40,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-18 15:15:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:15:40,843 INFO L225 Difference]: With dead ends: 14792 [2021-12-18 15:15:40,843 INFO L226 Difference]: Without dead ends: 9683 [2021-12-18 15:15:40,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:15:40,869 INFO L933 BasicCegarLoop]: 8585 mSDtfsCounter, 11948 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 10071 mSolverCounterSat, 4616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12854 SdHoareTripleChecker+Valid, 9620 SdHoareTripleChecker+Invalid, 14687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4616 IncrementalHoareTripleChecker+Valid, 10071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-12-18 15:15:40,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12854 Valid, 9620 Invalid, 14687 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4616 Valid, 10071 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2021-12-18 15:15:40,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9683 states. [2021-12-18 15:15:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9683 to 9205. [2021-12-18 15:15:41,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9205 states, 6588 states have (on average 1.410595021250759) internal successors, (9293), 6858 states have internal predecessors, (9293), 2158 states have call successors, (2158), 448 states have call predecessors, (2158), 458 states have return successors, (2314), 2040 states have call predecessors, (2314), 2141 states have call successors, (2314) [2021-12-18 15:15:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9205 states to 9205 states and 13765 transitions. [2021-12-18 15:15:41,204 INFO L78 Accepts]: Start accepts. Automaton has 9205 states and 13765 transitions. Word has length 13 [2021-12-18 15:15:41,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:15:41,204 INFO L470 AbstractCegarLoop]: Abstraction has 9205 states and 13765 transitions. [2021-12-18 15:15:41,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 15:15:41,205 INFO L276 IsEmpty]: Start isEmpty. Operand 9205 states and 13765 transitions. [2021-12-18 15:15:41,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-18 15:15:41,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:15:41,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:15:41,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 15:15:41,205 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:15:41,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:15:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash -869040714, now seen corresponding path program 1 times [2021-12-18 15:15:41,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:15:41,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126144726] [2021-12-18 15:15:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:15:41,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:15:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:15:41,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:15:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:15:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:15:41,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:15:41,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126144726] [2021-12-18 15:15:41,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126144726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:15:41,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:15:41,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 15:15:41,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383198551] [2021-12-18 15:15:41,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:15:41,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:15:41,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:15:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:15:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:15:41,576 INFO L87 Difference]: Start difference. First operand 9205 states and 13765 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 15:15:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:15:49,803 INFO L93 Difference]: Finished difference Result 9802 states and 14709 transitions. [2021-12-18 15:15:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 15:15:49,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-18 15:15:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:15:49,853 INFO L225 Difference]: With dead ends: 9802 [2021-12-18 15:15:49,853 INFO L226 Difference]: Without dead ends: 9799 [2021-12-18 15:15:49,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:15:49,866 INFO L933 BasicCegarLoop]: 6496 mSDtfsCounter, 10922 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 4442 mSolverCounterSat, 4049 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11386 SdHoareTripleChecker+Valid, 6537 SdHoareTripleChecker+Invalid, 8491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4049 IncrementalHoareTripleChecker+Valid, 4442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-18 15:15:49,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11386 Valid, 6537 Invalid, 8491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4049 Valid, 4442 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-12-18 15:15:49,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9799 states. [2021-12-18 15:15:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9799 to 9204. [2021-12-18 15:15:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9204 states, 6588 states have (on average 1.4104432301153613) internal successors, (9292), 6857 states have internal predecessors, (9292), 2157 states have call successors, (2157), 448 states have call predecessors, (2157), 458 states have return successors, (2314), 2040 states have call predecessors, (2314), 2141 states have call successors, (2314) [2021-12-18 15:15:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9204 states to 9204 states and 13763 transitions. [2021-12-18 15:15:50,204 INFO L78 Accepts]: Start accepts. Automaton has 9204 states and 13763 transitions. Word has length 14 [2021-12-18 15:15:50,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:15:50,204 INFO L470 AbstractCegarLoop]: Abstraction has 9204 states and 13763 transitions. [2021-12-18 15:15:50,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 15:15:50,205 INFO L276 IsEmpty]: Start isEmpty. Operand 9204 states and 13763 transitions. [2021-12-18 15:15:50,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-18 15:15:50,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:15:50,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:15:50,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 15:15:50,206 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:15:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:15:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1172631212, now seen corresponding path program 1 times [2021-12-18 15:15:50,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:15:50,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352619069] [2021-12-18 15:15:50,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:15:50,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:15:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:15:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:15:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:15:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:15:50,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:15:50,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352619069] [2021-12-18 15:15:50,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352619069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:15:50,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:15:50,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 15:15:50,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532164445] [2021-12-18 15:15:50,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:15:50,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:15:50,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:15:50,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:15:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:15:50,590 INFO L87 Difference]: Start difference. First operand 9204 states and 13763 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 15:16:09,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:16:15,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:16:15,176 INFO L93 Difference]: Finished difference Result 28579 states and 44337 transitions. [2021-12-18 15:16:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 15:16:15,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-18 15:16:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:16:15,278 INFO L225 Difference]: With dead ends: 28579 [2021-12-18 15:16:15,278 INFO L226 Difference]: Without dead ends: 19376 [2021-12-18 15:16:15,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:16:15,335 INFO L933 BasicCegarLoop]: 12073 mSDtfsCounter, 12335 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 13662 mSolverCounterSat, 4507 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13511 SdHoareTripleChecker+Valid, 14654 SdHoareTripleChecker+Invalid, 18170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4507 IncrementalHoareTripleChecker+Valid, 13662 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2021-12-18 15:16:15,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13511 Valid, 14654 Invalid, 18170 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4507 Valid, 13662 Invalid, 1 Unknown, 0 Unchecked, 23.6s Time] [2021-12-18 15:16:15,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19376 states. [2021-12-18 15:16:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19376 to 18736. [2021-12-18 15:16:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18736 states, 13394 states have (on average 1.4099596834403465) internal successors, (18885), 13962 states have internal predecessors, (18885), 4400 states have call successors, (4400), 891 states have call predecessors, (4400), 941 states have return successors, (5492), 4175 states have call predecessors, (5492), 4383 states have call successors, (5492) [2021-12-18 15:16:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18736 states to 18736 states and 28777 transitions. [2021-12-18 15:16:16,107 INFO L78 Accepts]: Start accepts. Automaton has 18736 states and 28777 transitions. Word has length 15 [2021-12-18 15:16:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:16:16,107 INFO L470 AbstractCegarLoop]: Abstraction has 18736 states and 28777 transitions. [2021-12-18 15:16:16,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 15:16:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 18736 states and 28777 transitions. [2021-12-18 15:16:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-18 15:16:16,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:16:16,110 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:16:16,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 15:16:16,110 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:16:16,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:16:16,110 INFO L85 PathProgramCache]: Analyzing trace with hash -588515942, now seen corresponding path program 1 times [2021-12-18 15:16:16,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:16:16,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637756611] [2021-12-18 15:16:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:16:16,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:16:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:16,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:16:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:16:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:16:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:16,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:16:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:16,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:16:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:16:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:16,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 15:16:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:16:16,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:16:16,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637756611] [2021-12-18 15:16:16,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637756611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:16:16,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:16:16,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 15:16:16,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139750611] [2021-12-18 15:16:16,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:16:16,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:16:16,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:16:16,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:16:16,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:16:16,531 INFO L87 Difference]: Start difference. First operand 18736 states and 28777 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:16:29,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:16:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:16:32,798 INFO L93 Difference]: Finished difference Result 38026 states and 58548 transitions. [2021-12-18 15:16:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 15:16:32,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-18 15:16:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:16:32,881 INFO L225 Difference]: With dead ends: 38026 [2021-12-18 15:16:32,881 INFO L226 Difference]: Without dead ends: 19296 [2021-12-18 15:16:32,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:16:32,958 INFO L933 BasicCegarLoop]: 7102 mSDtfsCounter, 3886 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 8563 mSolverCounterSat, 1501 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 10448 SdHoareTripleChecker+Invalid, 10065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1501 IncrementalHoareTripleChecker+Valid, 8563 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-12-18 15:16:32,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4669 Valid, 10448 Invalid, 10065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1501 Valid, 8563 Invalid, 1 Unknown, 0 Unchecked, 15.4s Time] [2021-12-18 15:16:32,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19296 states. [2021-12-18 15:16:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19296 to 18740. [2021-12-18 15:16:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18740 states, 13398 states have (on average 1.409837289147634) internal successors, (18889), 13966 states have internal predecessors, (18889), 4400 states have call successors, (4400), 891 states have call predecessors, (4400), 941 states have return successors, (5492), 4175 states have call predecessors, (5492), 4383 states have call successors, (5492) [2021-12-18 15:16:33,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18740 states to 18740 states and 28781 transitions. [2021-12-18 15:16:33,762 INFO L78 Accepts]: Start accepts. Automaton has 18740 states and 28781 transitions. Word has length 66 [2021-12-18 15:16:33,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:16:33,762 INFO L470 AbstractCegarLoop]: Abstraction has 18740 states and 28781 transitions. [2021-12-18 15:16:33,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:16:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 18740 states and 28781 transitions. [2021-12-18 15:16:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-18 15:16:33,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:16:33,768 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:16:33,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 15:16:33,769 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:16:33,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:16:33,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1334712092, now seen corresponding path program 1 times [2021-12-18 15:16:33,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:16:33,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352504545] [2021-12-18 15:16:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:16:33,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:16:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:16:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:34,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:16:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:34,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:16:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:16:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:34,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:16:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:16:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:34,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 15:16:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:16:34,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:16:34,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352504545] [2021-12-18 15:16:34,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352504545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:16:34,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:16:34,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 15:16:34,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747987389] [2021-12-18 15:16:34,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:16:34,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:16:34,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:16:34,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:16:34,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:16:34,118 INFO L87 Difference]: Start difference. First operand 18740 states and 28781 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:16:47,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:16:49,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:16:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:16:51,560 INFO L93 Difference]: Finished difference Result 38034 states and 58552 transitions. [2021-12-18 15:16:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 15:16:51,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-18 15:16:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:16:51,650 INFO L225 Difference]: With dead ends: 38034 [2021-12-18 15:16:51,650 INFO L226 Difference]: Without dead ends: 19300 [2021-12-18 15:16:51,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:16:51,736 INFO L933 BasicCegarLoop]: 7130 mSDtfsCounter, 3886 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 8563 mSolverCounterSat, 1498 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 10505 SdHoareTripleChecker+Invalid, 10062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1498 IncrementalHoareTripleChecker+Valid, 8563 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-12-18 15:16:51,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4669 Valid, 10505 Invalid, 10062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1498 Valid, 8563 Invalid, 1 Unknown, 0 Unchecked, 16.4s Time] [2021-12-18 15:16:51,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19300 states. [2021-12-18 15:16:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19300 to 18744. [2021-12-18 15:16:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18744 states, 13402 states have (on average 1.4097149679152365) internal successors, (18893), 13970 states have internal predecessors, (18893), 4400 states have call successors, (4400), 891 states have call predecessors, (4400), 941 states have return successors, (5492), 4175 states have call predecessors, (5492), 4383 states have call successors, (5492) [2021-12-18 15:16:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18744 states to 18744 states and 28785 transitions. [2021-12-18 15:16:52,573 INFO L78 Accepts]: Start accepts. Automaton has 18744 states and 28785 transitions. Word has length 66 [2021-12-18 15:16:52,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:16:52,574 INFO L470 AbstractCegarLoop]: Abstraction has 18744 states and 28785 transitions. [2021-12-18 15:16:52,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:16:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 18744 states and 28785 transitions. [2021-12-18 15:16:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-18 15:16:52,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:16:52,575 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:16:52,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 15:16:52,576 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:16:52,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:16:52,576 INFO L85 PathProgramCache]: Analyzing trace with hash -470726242, now seen corresponding path program 1 times [2021-12-18 15:16:52,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:16:52,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934103995] [2021-12-18 15:16:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:16:52,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:16:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:52,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:16:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:16:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:16:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:52,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:16:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:52,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:16:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:16:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:52,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 15:16:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:16:52,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:16:52,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:16:52,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934103995] [2021-12-18 15:16:52,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934103995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:16:52,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:16:52,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 15:16:52,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422789344] [2021-12-18 15:16:52,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:16:52,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 15:16:52,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:16:52,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 15:16:52,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:16:52,955 INFO L87 Difference]: Start difference. First operand 18744 states and 28785 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:17:10,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:17:12,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:17:15,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:17:16,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:17:18,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:17:18,374 INFO L93 Difference]: Finished difference Result 38058 states and 58584 transitions. [2021-12-18 15:17:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 15:17:18,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-18 15:17:18,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:17:18,445 INFO L225 Difference]: With dead ends: 38058 [2021-12-18 15:17:18,445 INFO L226 Difference]: Without dead ends: 19320 [2021-12-18 15:17:18,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 15:17:18,508 INFO L933 BasicCegarLoop]: 7105 mSDtfsCounter, 3892 mSDsluCounter, 6582 mSDsCounter, 0 mSdLazyCounter, 13302 mSolverCounterSat, 1503 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 13687 SdHoareTripleChecker+Invalid, 14808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1503 IncrementalHoareTripleChecker+Valid, 13302 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2021-12-18 15:17:18,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4675 Valid, 13687 Invalid, 14808 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1503 Valid, 13302 Invalid, 3 Unknown, 0 Unchecked, 24.3s Time] [2021-12-18 15:17:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19320 states. [2021-12-18 15:17:19,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19320 to 18758. [2021-12-18 15:17:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18758 states, 13414 states have (on average 1.4093484419263456) internal successors, (18905), 13984 states have internal predecessors, (18905), 4400 states have call successors, (4400), 891 states have call predecessors, (4400), 943 states have return successors, (5496), 4175 states have call predecessors, (5496), 4383 states have call successors, (5496) [2021-12-18 15:17:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18758 states to 18758 states and 28801 transitions. [2021-12-18 15:17:19,138 INFO L78 Accepts]: Start accepts. Automaton has 18758 states and 28801 transitions. Word has length 66 [2021-12-18 15:17:19,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:17:19,139 INFO L470 AbstractCegarLoop]: Abstraction has 18758 states and 28801 transitions. [2021-12-18 15:17:19,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:17:19,139 INFO L276 IsEmpty]: Start isEmpty. Operand 18758 states and 28801 transitions. [2021-12-18 15:17:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-18 15:17:19,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:17:19,140 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:17:19,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 15:17:19,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:17:19,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:17:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash -324818975, now seen corresponding path program 1 times [2021-12-18 15:17:19,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:17:19,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559014479] [2021-12-18 15:17:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:17:19,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:17:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:17:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:17:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:17:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:17:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:17:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:19,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:17:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:17:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:17:19,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:17:19,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559014479] [2021-12-18 15:17:19,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559014479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:17:19,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:17:19,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 15:17:19,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925411233] [2021-12-18 15:17:19,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:17:19,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 15:17:19,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:17:19,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 15:17:19,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:17:19,613 INFO L87 Difference]: Start difference. First operand 18758 states and 28801 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:17:36,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:17:38,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:17:40,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:17:42,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:17:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:17:44,474 INFO L93 Difference]: Finished difference Result 38078 states and 58604 transitions. [2021-12-18 15:17:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 15:17:44,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2021-12-18 15:17:44,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:17:44,548 INFO L225 Difference]: With dead ends: 38078 [2021-12-18 15:17:44,549 INFO L226 Difference]: Without dead ends: 19326 [2021-12-18 15:17:44,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 15:17:44,712 INFO L933 BasicCegarLoop]: 7104 mSDtfsCounter, 3891 mSDsluCounter, 6581 mSDsCounter, 0 mSdLazyCounter, 13299 mSolverCounterSat, 1502 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 13685 SdHoareTripleChecker+Invalid, 14804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1502 IncrementalHoareTripleChecker+Valid, 13299 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2021-12-18 15:17:44,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4674 Valid, 13685 Invalid, 14804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1502 Valid, 13299 Invalid, 3 Unknown, 0 Unchecked, 23.9s Time] [2021-12-18 15:17:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19326 states. [2021-12-18 15:17:45,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19326 to 18766. [2021-12-18 15:17:45,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18766 states, 13422 states have (on average 1.4091044553717778) internal successors, (18913), 13992 states have internal predecessors, (18913), 4400 states have call successors, (4400), 891 states have call predecessors, (4400), 943 states have return successors, (5496), 4175 states have call predecessors, (5496), 4383 states have call successors, (5496) [2021-12-18 15:17:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18766 states to 18766 states and 28809 transitions. [2021-12-18 15:17:45,300 INFO L78 Accepts]: Start accepts. Automaton has 18766 states and 28809 transitions. Word has length 68 [2021-12-18 15:17:45,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:17:45,301 INFO L470 AbstractCegarLoop]: Abstraction has 18766 states and 28809 transitions. [2021-12-18 15:17:45,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:17:45,301 INFO L276 IsEmpty]: Start isEmpty. Operand 18766 states and 28809 transitions. [2021-12-18 15:17:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-18 15:17:45,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:17:45,303 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:17:45,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 15:17:45,303 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:17:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:17:45,303 INFO L85 PathProgramCache]: Analyzing trace with hash -184270365, now seen corresponding path program 1 times [2021-12-18 15:17:45,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:17:45,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359477913] [2021-12-18 15:17:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:17:45,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:17:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:45,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:17:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:45,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:17:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:45,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:17:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:45,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:17:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:17:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:45,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:17:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:17:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:17:45,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:17:45,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359477913] [2021-12-18 15:17:45,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359477913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:17:45,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:17:45,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 15:17:45,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058260580] [2021-12-18 15:17:45,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:17:45,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 15:17:45,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:17:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 15:17:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:17:45,682 INFO L87 Difference]: Start difference. First operand 18766 states and 28809 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 15:18:05,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:07,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:09,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:13,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:14,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:17,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:18:17,140 INFO L93 Difference]: Finished difference Result 38090 states and 58604 transitions. [2021-12-18 15:18:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 15:18:17,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2021-12-18 15:18:17,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:18:17,205 INFO L225 Difference]: With dead ends: 38090 [2021-12-18 15:18:17,205 INFO L226 Difference]: Without dead ends: 19330 [2021-12-18 15:18:17,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:18:17,258 INFO L933 BasicCegarLoop]: 7432 mSDtfsCounter, 3895 mSDsluCounter, 10801 mSDsCounter, 0 mSdLazyCounter, 18032 mSolverCounterSat, 1463 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4678 SdHoareTripleChecker+Valid, 18233 SdHoareTripleChecker+Invalid, 19499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1463 IncrementalHoareTripleChecker+Valid, 18032 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2021-12-18 15:18:17,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4678 Valid, 18233 Invalid, 19499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1463 Valid, 18032 Invalid, 4 Unknown, 0 Unchecked, 30.4s Time] [2021-12-18 15:18:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19330 states. [2021-12-18 15:18:17,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19330 to 18766. [2021-12-18 15:18:17,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18766 states, 13422 states have (on average 1.4089554462822231) internal successors, (18911), 13992 states have internal predecessors, (18911), 4400 states have call successors, (4400), 891 states have call predecessors, (4400), 943 states have return successors, (5496), 4175 states have call predecessors, (5496), 4383 states have call successors, (5496) [2021-12-18 15:18:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18766 states to 18766 states and 28807 transitions. [2021-12-18 15:18:17,873 INFO L78 Accepts]: Start accepts. Automaton has 18766 states and 28807 transitions. Word has length 68 [2021-12-18 15:18:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:18:17,874 INFO L470 AbstractCegarLoop]: Abstraction has 18766 states and 28807 transitions. [2021-12-18 15:18:17,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 15:18:17,874 INFO L276 IsEmpty]: Start isEmpty. Operand 18766 states and 28807 transitions. [2021-12-18 15:18:17,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-18 15:18:17,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:18:17,875 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:18:17,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 15:18:17,876 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:18:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:18:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash -771076379, now seen corresponding path program 1 times [2021-12-18 15:18:17,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:18:17,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793042307] [2021-12-18 15:18:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:17,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:18:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:18:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:18:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:18:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:18:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:18:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:18:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:18:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:18:18,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:18:18,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793042307] [2021-12-18 15:18:18,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793042307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:18:18,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:18:18,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 15:18:18,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270969654] [2021-12-18 15:18:18,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:18:18,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:18:18,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:18:18,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:18:18,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:18:18,399 INFO L87 Difference]: Start difference. First operand 18766 states and 28807 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 15:18:37,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:40,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:41,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:18:41,937 INFO L93 Difference]: Finished difference Result 38014 states and 59243 transitions. [2021-12-18 15:18:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 15:18:41,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2021-12-18 15:18:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:18:42,010 INFO L225 Difference]: With dead ends: 38014 [2021-12-18 15:18:42,011 INFO L226 Difference]: Without dead ends: 19254 [2021-12-18 15:18:42,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:18:42,092 INFO L933 BasicCegarLoop]: 7975 mSDtfsCounter, 10872 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 10889 mSolverCounterSat, 4281 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11861 SdHoareTripleChecker+Valid, 9616 SdHoareTripleChecker+Invalid, 15171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4281 IncrementalHoareTripleChecker+Valid, 10889 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2021-12-18 15:18:42,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11861 Valid, 9616 Invalid, 15171 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4281 Valid, 10889 Invalid, 1 Unknown, 0 Unchecked, 22.4s Time] [2021-12-18 15:18:42,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19254 states. [2021-12-18 15:18:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19254 to 18482. [2021-12-18 15:18:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18482 states, 13238 states have (on average 1.4093518658407616) internal successors, (18657), 13794 states have internal predecessors, (18657), 4317 states have call successors, (4317), 884 states have call predecessors, (4317), 926 states have return successors, (5006), 4087 states have call predecessors, (5006), 4230 states have call successors, (5006) [2021-12-18 15:18:42,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18482 states to 18482 states and 27980 transitions. [2021-12-18 15:18:42,705 INFO L78 Accepts]: Start accepts. Automaton has 18482 states and 27980 transitions. Word has length 68 [2021-12-18 15:18:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:18:42,706 INFO L470 AbstractCegarLoop]: Abstraction has 18482 states and 27980 transitions. [2021-12-18 15:18:42,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 15:18:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand 18482 states and 27980 transitions. [2021-12-18 15:18:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-18 15:18:42,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:18:42,707 INFO L514 BasicCegarLoop]: 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] [2021-12-18 15:18:42,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 15:18:42,707 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:18:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:18:42,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2139856505, now seen corresponding path program 1 times [2021-12-18 15:18:42,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:18:42,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484422012] [2021-12-18 15:18:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:42,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:18:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:42,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:18:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:18:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:43,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 15:18:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:18:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:18:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:18:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:18:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:18:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:18:43,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:18:43,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484422012] [2021-12-18 15:18:43,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484422012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:18:43,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:18:43,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 15:18:43,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533135322] [2021-12-18 15:18:43,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:18:43,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 15:18:43,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:18:43,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 15:18:43,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:18:43,288 INFO L87 Difference]: Start difference. First operand 18482 states and 27980 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-18 15:19:12,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:15,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:16,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:18,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:19,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:22,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:19:22,295 INFO L93 Difference]: Finished difference Result 21401 states and 33201 transitions. [2021-12-18 15:19:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 15:19:22,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 70 [2021-12-18 15:19:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:19:22,363 INFO L225 Difference]: With dead ends: 21401 [2021-12-18 15:19:22,363 INFO L226 Difference]: Without dead ends: 21197 [2021-12-18 15:19:22,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 15:19:22,374 INFO L933 BasicCegarLoop]: 7336 mSDtfsCounter, 7045 mSDsluCounter, 12235 mSDsCounter, 0 mSdLazyCounter, 23574 mSolverCounterSat, 3978 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7707 SdHoareTripleChecker+Valid, 19571 SdHoareTripleChecker+Invalid, 27553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3978 IncrementalHoareTripleChecker+Valid, 23574 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2021-12-18 15:19:22,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7707 Valid, 19571 Invalid, 27553 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3978 Valid, 23574 Invalid, 1 Unknown, 0 Unchecked, 38.0s Time] [2021-12-18 15:19:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21197 states. [2021-12-18 15:19:22,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21197 to 18546. [2021-12-18 15:19:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18546 states, 13276 states have (on average 1.408933413678819) internal successors, (18705), 13844 states have internal predecessors, (18705), 4327 states have call successors, (4327), 884 states have call predecessors, (4327), 942 states have return successors, (5046), 4099 states have call predecessors, (5046), 4240 states have call successors, (5046) [2021-12-18 15:19:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18546 states to 18546 states and 28078 transitions. [2021-12-18 15:19:23,006 INFO L78 Accepts]: Start accepts. Automaton has 18546 states and 28078 transitions. Word has length 70 [2021-12-18 15:19:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:19:23,007 INFO L470 AbstractCegarLoop]: Abstraction has 18546 states and 28078 transitions. [2021-12-18 15:19:23,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-18 15:19:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 18546 states and 28078 transitions. [2021-12-18 15:19:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-18 15:19:23,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:19:23,008 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:19:23,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 15:19:23,009 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:19:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:19:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash 681701205, now seen corresponding path program 1 times [2021-12-18 15:19:23,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:19:23,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023488263] [2021-12-18 15:19:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:19:23,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:19:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:19:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:19:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:23,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:19:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:23,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:19:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:19:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:23,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:19:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:19:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 15:19:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:19:23,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:19:23,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023488263] [2021-12-18 15:19:23,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023488263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:19:23,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:19:23,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 15:19:23,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494571102] [2021-12-18 15:19:23,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:19:23,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 15:19:23,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:19:23,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 15:19:23,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-18 15:19:23,350 INFO L87 Difference]: Start difference. First operand 18546 states and 28078 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-18 15:19:40,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:19:40,194 INFO L93 Difference]: Finished difference Result 26225 states and 39372 transitions. [2021-12-18 15:19:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 15:19:40,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2021-12-18 15:19:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:19:40,216 INFO L225 Difference]: With dead ends: 26225 [2021-12-18 15:19:40,216 INFO L226 Difference]: Without dead ends: 7685 [2021-12-18 15:19:40,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-18 15:19:40,260 INFO L933 BasicCegarLoop]: 4467 mSDtfsCounter, 3324 mSDsluCounter, 6134 mSDsCounter, 0 mSdLazyCounter, 16885 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4007 SdHoareTripleChecker+Valid, 10601 SdHoareTripleChecker+Invalid, 17815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 16885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-12-18 15:19:40,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4007 Valid, 10601 Invalid, 17815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [930 Valid, 16885 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2021-12-18 15:19:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7685 states. [2021-12-18 15:19:40,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7685 to 7444. [2021-12-18 15:19:40,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7444 states, 5341 states have (on average 1.3971166448230667) internal successors, (7462), 5587 states have internal predecessors, (7462), 1686 states have call successors, (1686), 431 states have call predecessors, (1686), 416 states have return successors, (1726), 1543 states have call predecessors, (1726), 1602 states have call successors, (1726) [2021-12-18 15:19:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7444 states to 7444 states and 10874 transitions. [2021-12-18 15:19:40,455 INFO L78 Accepts]: Start accepts. Automaton has 7444 states and 10874 transitions. Word has length 72 [2021-12-18 15:19:40,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:19:40,455 INFO L470 AbstractCegarLoop]: Abstraction has 7444 states and 10874 transitions. [2021-12-18 15:19:40,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-18 15:19:40,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7444 states and 10874 transitions. [2021-12-18 15:19:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-18 15:19:40,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:19:40,456 INFO L514 BasicCegarLoop]: 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] [2021-12-18 15:19:40,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 15:19:40,457 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:19:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:19:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1492722057, now seen corresponding path program 1 times [2021-12-18 15:19:40,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:19:40,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99001021] [2021-12-18 15:19:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:19:40,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:19:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:19:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:40,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:19:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 15:19:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:40,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:19:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:19:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:40,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:19:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:40,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:19:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:40,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:19:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:40,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 15:19:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:19:40,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:19:40,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99001021] [2021-12-18 15:19:40,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99001021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:19:40,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:19:40,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 15:19:40,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548846368] [2021-12-18 15:19:40,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:19:40,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 15:19:40,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:19:40,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 15:19:40,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:19:40,858 INFO L87 Difference]: Start difference. First operand 7444 states and 10874 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:20:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:20:03,936 INFO L93 Difference]: Finished difference Result 9020 states and 13589 transitions. [2021-12-18 15:20:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 15:20:03,938 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 77 [2021-12-18 15:20:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:20:03,958 INFO L225 Difference]: With dead ends: 9020 [2021-12-18 15:20:03,958 INFO L226 Difference]: Without dead ends: 8816 [2021-12-18 15:20:03,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-18 15:20:03,961 INFO L933 BasicCegarLoop]: 4435 mSDtfsCounter, 5903 mSDsluCounter, 7578 mSDsCounter, 0 mSdLazyCounter, 21003 mSolverCounterSat, 2736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6468 SdHoareTripleChecker+Valid, 12013 SdHoareTripleChecker+Invalid, 23739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2736 IncrementalHoareTripleChecker+Valid, 21003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2021-12-18 15:20:03,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6468 Valid, 12013 Invalid, 23739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2736 Valid, 21003 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2021-12-18 15:20:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8816 states. [2021-12-18 15:20:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8816 to 7304. [2021-12-18 15:20:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7304 states, 5230 states have (on average 1.3978967495219885) internal successors, (7311), 5470 states have internal predecessors, (7311), 1664 states have call successors, (1664), 424 states have call predecessors, (1664), 409 states have return successors, (1705), 1527 states have call predecessors, (1705), 1585 states have call successors, (1705) [2021-12-18 15:20:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 10680 transitions. [2021-12-18 15:20:04,168 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 10680 transitions. Word has length 77 [2021-12-18 15:20:04,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:20:04,168 INFO L470 AbstractCegarLoop]: Abstraction has 7304 states and 10680 transitions. [2021-12-18 15:20:04,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:20:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 10680 transitions. [2021-12-18 15:20:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-18 15:20:04,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:20:04,171 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:20:04,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 15:20:04,171 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:20:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:20:04,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1241407229, now seen corresponding path program 1 times [2021-12-18 15:20:04,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:20:04,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771024301] [2021-12-18 15:20:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:20:04,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:20:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:20:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:20:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 15:20:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:20:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 15:20:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 15:20:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:20:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 15:20:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 15:20:04,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:20:04,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771024301] [2021-12-18 15:20:04,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771024301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:20:04,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:20:04,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 15:20:04,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843348601] [2021-12-18 15:20:04,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:20:04,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 15:20:04,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:20:04,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 15:20:04,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:20:04,512 INFO L87 Difference]: Start difference. First operand 7304 states and 10680 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 15:20:19,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:20:19,307 INFO L93 Difference]: Finished difference Result 15761 states and 23361 transitions. [2021-12-18 15:20:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 15:20:19,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 110 [2021-12-18 15:20:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:20:19,330 INFO L225 Difference]: With dead ends: 15761 [2021-12-18 15:20:19,331 INFO L226 Difference]: Without dead ends: 8463 [2021-12-18 15:20:19,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:20:19,345 INFO L933 BasicCegarLoop]: 4045 mSDtfsCounter, 5816 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 8200 mSolverCounterSat, 2767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6323 SdHoareTripleChecker+Valid, 5488 SdHoareTripleChecker+Invalid, 10967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2767 IncrementalHoareTripleChecker+Valid, 8200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-12-18 15:20:19,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6323 Valid, 5488 Invalid, 10967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2767 Valid, 8200 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2021-12-18 15:20:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8463 states. [2021-12-18 15:20:19,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8463 to 7542. [2021-12-18 15:20:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7542 states, 5405 states have (on average 1.4001850138760408) internal successors, (7568), 5662 states have internal predecessors, (7568), 1708 states have call successors, (1708), 424 states have call predecessors, (1708), 428 states have return successors, (1821), 1581 states have call predecessors, (1821), 1629 states have call successors, (1821) [2021-12-18 15:20:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7542 states to 7542 states and 11097 transitions. [2021-12-18 15:20:19,549 INFO L78 Accepts]: Start accepts. Automaton has 7542 states and 11097 transitions. Word has length 110 [2021-12-18 15:20:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:20:19,549 INFO L470 AbstractCegarLoop]: Abstraction has 7542 states and 11097 transitions. [2021-12-18 15:20:19,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 15:20:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7542 states and 11097 transitions. [2021-12-18 15:20:19,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-18 15:20:19,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:20:19,552 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:20:19,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 15:20:19,552 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:20:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:20:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1074332086, now seen corresponding path program 1 times [2021-12-18 15:20:19,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:20:19,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740113627] [2021-12-18 15:20:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:20:19,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:20:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:20:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:20:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:20:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:20:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 15:20:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:20:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 15:20:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 15:20:19,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:20:19,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740113627] [2021-12-18 15:20:19,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740113627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:20:19,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:20:19,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 15:20:19,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108547046] [2021-12-18 15:20:19,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:20:19,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 15:20:19,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:20:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 15:20:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:20:19,871 INFO L87 Difference]: Start difference. First operand 7542 states and 11097 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:20:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:20:34,721 INFO L93 Difference]: Finished difference Result 16002 states and 23770 transitions. [2021-12-18 15:20:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 15:20:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 107 [2021-12-18 15:20:34,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:20:34,750 INFO L225 Difference]: With dead ends: 16002 [2021-12-18 15:20:34,750 INFO L226 Difference]: Without dead ends: 8466 [2021-12-18 15:20:34,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:20:34,770 INFO L933 BasicCegarLoop]: 4103 mSDtfsCounter, 5423 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 8247 mSolverCounterSat, 2733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5854 SdHoareTripleChecker+Valid, 5980 SdHoareTripleChecker+Invalid, 10980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2733 IncrementalHoareTripleChecker+Valid, 8247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-12-18 15:20:34,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5854 Valid, 5980 Invalid, 10980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2733 Valid, 8247 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2021-12-18 15:20:34,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8466 states. [2021-12-18 15:20:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8466 to 7544. [2021-12-18 15:20:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7544 states, 5407 states have (on average 1.400036989088219) internal successors, (7570), 5664 states have internal predecessors, (7570), 1708 states have call successors, (1708), 424 states have call predecessors, (1708), 428 states have return successors, (1821), 1581 states have call predecessors, (1821), 1629 states have call successors, (1821) [2021-12-18 15:20:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7544 states to 7544 states and 11099 transitions. [2021-12-18 15:20:35,046 INFO L78 Accepts]: Start accepts. Automaton has 7544 states and 11099 transitions. Word has length 107 [2021-12-18 15:20:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:20:35,047 INFO L470 AbstractCegarLoop]: Abstraction has 7544 states and 11099 transitions. [2021-12-18 15:20:35,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:20:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 7544 states and 11099 transitions. [2021-12-18 15:20:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-18 15:20:35,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:20:35,049 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:20:35,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 15:20:35,050 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:20:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:20:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1918240915, now seen corresponding path program 1 times [2021-12-18 15:20:35,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:20:35,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676288640] [2021-12-18 15:20:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:20:35,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:20:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:20:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:20:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 15:20:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:20:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 15:20:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 15:20:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:20:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 15:20:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 15:20:35,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:20:35,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676288640] [2021-12-18 15:20:35,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676288640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:20:35,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:20:35,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 15:20:35,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375265138] [2021-12-18 15:20:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:20:35,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 15:20:35,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:20:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 15:20:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:20:35,390 INFO L87 Difference]: Start difference. First operand 7544 states and 11099 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:20:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:20:50,484 INFO L93 Difference]: Finished difference Result 16002 states and 23768 transitions. [2021-12-18 15:20:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 15:20:50,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 113 [2021-12-18 15:20:50,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:20:50,509 INFO L225 Difference]: With dead ends: 16002 [2021-12-18 15:20:50,509 INFO L226 Difference]: Without dead ends: 8464 [2021-12-18 15:20:50,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:20:50,529 INFO L933 BasicCegarLoop]: 4059 mSDtfsCounter, 5465 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 8208 mSolverCounterSat, 2739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5896 SdHoareTripleChecker+Valid, 5934 SdHoareTripleChecker+Invalid, 10947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2739 IncrementalHoareTripleChecker+Valid, 8208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-12-18 15:20:50,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5896 Valid, 5934 Invalid, 10947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2739 Valid, 8208 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2021-12-18 15:20:50,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8464 states. [2021-12-18 15:20:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8464 to 7546. [2021-12-18 15:20:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7546 states, 5409 states have (on average 1.3998890737659457) internal successors, (7572), 5666 states have internal predecessors, (7572), 1708 states have call successors, (1708), 424 states have call predecessors, (1708), 428 states have return successors, (1821), 1581 states have call predecessors, (1821), 1629 states have call successors, (1821) [2021-12-18 15:20:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7546 states to 7546 states and 11101 transitions. [2021-12-18 15:20:50,746 INFO L78 Accepts]: Start accepts. Automaton has 7546 states and 11101 transitions. Word has length 113 [2021-12-18 15:20:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:20:50,747 INFO L470 AbstractCegarLoop]: Abstraction has 7546 states and 11101 transitions. [2021-12-18 15:20:50,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:20:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 7546 states and 11101 transitions. [2021-12-18 15:20:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-18 15:20:50,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:20:50,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:20:50,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 15:20:50,750 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:20:50,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:20:50,751 INFO L85 PathProgramCache]: Analyzing trace with hash -254040922, now seen corresponding path program 1 times [2021-12-18 15:20:50,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:20:50,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694311168] [2021-12-18 15:20:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:20:50,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:20:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:20:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:20:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:20:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:20:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 15:20:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:20:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 15:20:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 15:20:51,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:20:51,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694311168] [2021-12-18 15:20:51,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694311168] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:20:51,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163514303] [2021-12-18 15:20:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:20:51,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:20:51,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:20:51,150 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) [2021-12-18 15:20:51,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 15:20:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:53,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 10562 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 15:20:53,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:20:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 15:20:53,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 15:20:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 15:20:53,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163514303] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 15:20:53,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 15:20:53,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-12-18 15:20:53,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818693904] [2021-12-18 15:20:53,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 15:20:53,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 15:20:53,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:20:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 15:20:53,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:20:53,384 INFO L87 Difference]: Start difference. First operand 7546 states and 11101 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:21:12,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:21:12,784 INFO L93 Difference]: Finished difference Result 16026 states and 23804 transitions. [2021-12-18 15:21:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 15:21:12,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 115 [2021-12-18 15:21:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:21:12,812 INFO L225 Difference]: With dead ends: 16026 [2021-12-18 15:21:12,813 INFO L226 Difference]: Without dead ends: 8486 [2021-12-18 15:21:12,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-18 15:21:12,830 INFO L933 BasicCegarLoop]: 4093 mSDtfsCounter, 5454 mSDsluCounter, 4797 mSDsCounter, 0 mSdLazyCounter, 16102 mSolverCounterSat, 2749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5884 SdHoareTripleChecker+Valid, 8890 SdHoareTripleChecker+Invalid, 18851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2749 IncrementalHoareTripleChecker+Valid, 16102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2021-12-18 15:21:12,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5884 Valid, 8890 Invalid, 18851 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2749 Valid, 16102 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2021-12-18 15:21:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8486 states. [2021-12-18 15:21:13,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8486 to 7576. [2021-12-18 15:21:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7576 states, 5439 states have (on average 1.3998896856039713) internal successors, (7614), 5696 states have internal predecessors, (7614), 1708 states have call successors, (1708), 424 states have call predecessors, (1708), 428 states have return successors, (1821), 1581 states have call predecessors, (1821), 1629 states have call successors, (1821) [2021-12-18 15:21:13,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7576 states to 7576 states and 11143 transitions. [2021-12-18 15:21:13,118 INFO L78 Accepts]: Start accepts. Automaton has 7576 states and 11143 transitions. Word has length 115 [2021-12-18 15:21:13,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:21:13,118 INFO L470 AbstractCegarLoop]: Abstraction has 7576 states and 11143 transitions. [2021-12-18 15:21:13,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:21:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7576 states and 11143 transitions. [2021-12-18 15:21:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-18 15:21:13,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:21:13,121 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:21:13,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 15:21:13,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-18 15:21:13,333 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:21:13,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:21:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1850913645, now seen corresponding path program 1 times [2021-12-18 15:21:13,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:21:13,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494022460] [2021-12-18 15:21:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:21:13,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:21:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:21:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:21:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 15:21:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:21:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:21:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:21:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 15:21:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 15:21:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:21:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:21:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:21:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 15:21:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-18 15:21:13,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:21:13,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494022460] [2021-12-18 15:21:13,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494022460] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:21:13,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336884151] [2021-12-18 15:21:13,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:21:13,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:21:13,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:21:13,684 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) [2021-12-18 15:21:13,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 15:21:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:15,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 10601 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 15:21:15,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:21:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 15:21:15,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 15:21:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 15:21:15,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336884151] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 15:21:15,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 15:21:15,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2021-12-18 15:21:15,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078144433] [2021-12-18 15:21:15,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 15:21:15,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 15:21:15,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:21:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 15:21:15,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-12-18 15:21:15,932 INFO L87 Difference]: Start difference. First operand 7576 states and 11143 transitions. Second operand has 16 states, 16 states have (on average 8.0625) internal successors, (129), 14 states have internal predecessors, (129), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:21:38,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:21:38,667 INFO L93 Difference]: Finished difference Result 16326 states and 24256 transitions. [2021-12-18 15:21:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-18 15:21:38,668 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.0625) internal successors, (129), 14 states have internal predecessors, (129), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 133 [2021-12-18 15:21:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:21:38,690 INFO L225 Difference]: With dead ends: 16326 [2021-12-18 15:21:38,690 INFO L226 Difference]: Without dead ends: 8756 [2021-12-18 15:21:38,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=404, Invalid=928, Unknown=0, NotChecked=0, Total=1332 [2021-12-18 15:21:38,705 INFO L933 BasicCegarLoop]: 4104 mSDtfsCounter, 5789 mSDsluCounter, 6268 mSDsCounter, 0 mSdLazyCounter, 20147 mSolverCounterSat, 2781 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6219 SdHoareTripleChecker+Valid, 10372 SdHoareTripleChecker+Invalid, 22928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2781 IncrementalHoareTripleChecker+Valid, 20147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2021-12-18 15:21:38,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6219 Valid, 10372 Invalid, 22928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2781 Valid, 20147 Invalid, 0 Unknown, 0 Unchecked, 21.8s Time] [2021-12-18 15:21:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2021-12-18 15:21:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 7742. [2021-12-18 15:21:38,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7742 states, 5605 states have (on average 1.399821587867975) internal successors, (7846), 5862 states have internal predecessors, (7846), 1708 states have call successors, (1708), 424 states have call predecessors, (1708), 428 states have return successors, (1821), 1581 states have call predecessors, (1821), 1629 states have call successors, (1821) [2021-12-18 15:21:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7742 states to 7742 states and 11375 transitions. [2021-12-18 15:21:38,938 INFO L78 Accepts]: Start accepts. Automaton has 7742 states and 11375 transitions. Word has length 133 [2021-12-18 15:21:38,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:21:38,938 INFO L470 AbstractCegarLoop]: Abstraction has 7742 states and 11375 transitions. [2021-12-18 15:21:38,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.0625) internal successors, (129), 14 states have internal predecessors, (129), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:21:38,938 INFO L276 IsEmpty]: Start isEmpty. Operand 7742 states and 11375 transitions. [2021-12-18 15:21:38,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-18 15:21:38,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:21:38,943 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:21:38,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 15:21:39,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-18 15:21:39,156 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:21:39,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:21:39,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1973409451, now seen corresponding path program 1 times [2021-12-18 15:21:39,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:21:39,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689781815] [2021-12-18 15:21:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:21:39,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:21:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:21:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:21:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 15:21:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:21:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:21:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:21:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:21:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:21:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 15:21:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:21:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:21:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:21:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 15:21:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 15:21:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:21:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 15:21:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:21:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 15:21:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 15:21:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-18 15:21:39,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:21:39,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689781815] [2021-12-18 15:21:39,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689781815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:21:39,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:21:39,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 15:21:39,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014130694] [2021-12-18 15:21:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:21:39,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 15:21:39,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:21:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 15:21:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:21:39,543 INFO L87 Difference]: Start difference. First operand 7742 states and 11375 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 15:21:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:21:56,074 INFO L93 Difference]: Finished difference Result 16361 states and 24315 transitions. [2021-12-18 15:21:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 15:21:56,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2021-12-18 15:21:56,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:21:56,094 INFO L225 Difference]: With dead ends: 16361 [2021-12-18 15:21:56,094 INFO L226 Difference]: Without dead ends: 8625 [2021-12-18 15:21:56,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:21:56,107 INFO L933 BasicCegarLoop]: 4111 mSDtfsCounter, 5129 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 8709 mSolverCounterSat, 2540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5694 SdHoareTripleChecker+Valid, 6312 SdHoareTripleChecker+Invalid, 11249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2540 IncrementalHoareTripleChecker+Valid, 8709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2021-12-18 15:21:56,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5694 Valid, 6312 Invalid, 11249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2540 Valid, 8709 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2021-12-18 15:21:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8625 states. [2021-12-18 15:21:56,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8625 to 7744. [2021-12-18 15:21:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7744 states, 5607 states have (on average 1.3996789727126806) internal successors, (7848), 5864 states have internal predecessors, (7848), 1708 states have call successors, (1708), 424 states have call predecessors, (1708), 428 states have return successors, (1821), 1581 states have call predecessors, (1821), 1629 states have call successors, (1821) [2021-12-18 15:21:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7744 states to 7744 states and 11377 transitions. [2021-12-18 15:21:56,328 INFO L78 Accepts]: Start accepts. Automaton has 7744 states and 11377 transitions. Word has length 164 [2021-12-18 15:21:56,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:21:56,328 INFO L470 AbstractCegarLoop]: Abstraction has 7744 states and 11377 transitions. [2021-12-18 15:21:56,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 15:21:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 7744 states and 11377 transitions. [2021-12-18 15:21:56,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-18 15:21:56,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:21:56,332 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:21:56,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-18 15:21:56,332 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:21:56,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:21:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1480783277, now seen corresponding path program 1 times [2021-12-18 15:21:56,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:21:56,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777953466] [2021-12-18 15:21:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:21:56,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:21:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:21:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:21:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 15:21:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:21:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:21:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:21:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:21:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:21:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 15:21:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:21:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:21:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:21:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 15:21:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 15:21:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:21:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 15:21:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:21:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 15:21:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 15:21:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:21:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-18 15:21:56,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:21:56,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777953466] [2021-12-18 15:21:56,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777953466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:21:56,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:21:56,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 15:21:56,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505180983] [2021-12-18 15:21:56,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:21:56,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 15:21:56,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:21:56,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 15:21:56,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:21:56,766 INFO L87 Difference]: Start difference. First operand 7744 states and 11377 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 15:22:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:22:16,770 INFO L93 Difference]: Finished difference Result 16369 states and 24323 transitions. [2021-12-18 15:22:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 15:22:16,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2021-12-18 15:22:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:22:16,790 INFO L225 Difference]: With dead ends: 16369 [2021-12-18 15:22:16,790 INFO L226 Difference]: Without dead ends: 8631 [2021-12-18 15:22:16,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:22:16,802 INFO L933 BasicCegarLoop]: 4105 mSDtfsCounter, 5135 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 12671 mSolverCounterSat, 2540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5696 SdHoareTripleChecker+Valid, 7712 SdHoareTripleChecker+Invalid, 15211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2540 IncrementalHoareTripleChecker+Valid, 12671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2021-12-18 15:22:16,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5696 Valid, 7712 Invalid, 15211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2540 Valid, 12671 Invalid, 0 Unknown, 0 Unchecked, 19.3s Time] [2021-12-18 15:22:16,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8631 states. [2021-12-18 15:22:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8631 to 7748. [2021-12-18 15:22:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7748 states, 5611 states have (on average 1.3993940474068793) internal successors, (7852), 5868 states have internal predecessors, (7852), 1708 states have call successors, (1708), 424 states have call predecessors, (1708), 428 states have return successors, (1821), 1581 states have call predecessors, (1821), 1629 states have call successors, (1821) [2021-12-18 15:22:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 11381 transitions. [2021-12-18 15:22:17,025 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 11381 transitions. Word has length 164 [2021-12-18 15:22:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:22:17,025 INFO L470 AbstractCegarLoop]: Abstraction has 7748 states and 11381 transitions. [2021-12-18 15:22:17,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 15:22:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 11381 transitions. [2021-12-18 15:22:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-18 15:22:17,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:22:17,031 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:22:17,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-18 15:22:17,031 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:22:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:22:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 513432623, now seen corresponding path program 1 times [2021-12-18 15:22:17,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:22:17,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847837462] [2021-12-18 15:22:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:22:17,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:22:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:22:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:22:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 15:22:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:22:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:22:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:22:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 15:22:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:22:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:22:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 15:22:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 15:22:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:22:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 15:22:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 15:22:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 15:22:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-18 15:22:17,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:22:17,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847837462] [2021-12-18 15:22:17,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847837462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:22:17,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:22:17,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 15:22:17,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533448837] [2021-12-18 15:22:17,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:22:17,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 15:22:17,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:22:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 15:22:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-18 15:22:17,493 INFO L87 Difference]: Start difference. First operand 7748 states and 11381 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 15:22:48,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:22:48,641 INFO L93 Difference]: Finished difference Result 15546 states and 23129 transitions. [2021-12-18 15:22:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 15:22:48,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2021-12-18 15:22:48,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:22:48,663 INFO L225 Difference]: With dead ends: 15546 [2021-12-18 15:22:48,663 INFO L226 Difference]: Without dead ends: 7804 [2021-12-18 15:22:48,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-12-18 15:22:48,684 INFO L933 BasicCegarLoop]: 4291 mSDtfsCounter, 6677 mSDsluCounter, 9773 mSDsCounter, 0 mSdLazyCounter, 28786 mSolverCounterSat, 3037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7213 SdHoareTripleChecker+Valid, 14064 SdHoareTripleChecker+Invalid, 31823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3037 IncrementalHoareTripleChecker+Valid, 28786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2021-12-18 15:22:48,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7213 Valid, 14064 Invalid, 31823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3037 Valid, 28786 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time] [2021-12-18 15:22:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2021-12-18 15:22:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 6487. [2021-12-18 15:22:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6487 states, 4635 states have (on average 1.3913700107874865) internal successors, (6449), 4868 states have internal predecessors, (6449), 1472 states have call successors, (1472), 389 states have call predecessors, (1472), 379 states have return successors, (1501), 1341 states have call predecessors, (1501), 1395 states have call successors, (1501) [2021-12-18 15:22:48,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6487 states to 6487 states and 9422 transitions. [2021-12-18 15:22:48,882 INFO L78 Accepts]: Start accepts. Automaton has 6487 states and 9422 transitions. Word has length 164 [2021-12-18 15:22:48,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:22:48,882 INFO L470 AbstractCegarLoop]: Abstraction has 6487 states and 9422 transitions. [2021-12-18 15:22:48,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 15:22:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 6487 states and 9422 transitions. [2021-12-18 15:22:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-18 15:22:48,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:22:48,887 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:22:48,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-18 15:22:48,888 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:22:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:22:48,888 INFO L85 PathProgramCache]: Analyzing trace with hash -615344714, now seen corresponding path program 1 times [2021-12-18 15:22:48,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:22:48,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786343585] [2021-12-18 15:22:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:22:48,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:22:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:22:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:22:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 15:22:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:22:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:22:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 15:22:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 15:22:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:22:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:22:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 15:22:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 15:22:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 15:22:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 15:22:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 15:22:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 15:22:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 15:22:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 15:22:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-18 15:22:49,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:22:49,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786343585] [2021-12-18 15:22:49,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786343585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:22:49,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:22:49,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 15:22:49,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060922810] [2021-12-18 15:22:49,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:22:49,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 15:22:49,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:22:49,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 15:22:49,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 15:22:49,312 INFO L87 Difference]: Start difference. First operand 6487 states and 9422 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 15:23:16,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:23:16,664 INFO L93 Difference]: Finished difference Result 13636 states and 20198 transitions. [2021-12-18 15:23:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 15:23:16,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 196 [2021-12-18 15:23:16,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:23:16,692 INFO L225 Difference]: With dead ends: 13636 [2021-12-18 15:23:16,692 INFO L226 Difference]: Without dead ends: 8251 [2021-12-18 15:23:16,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-18 15:23:16,705 INFO L933 BasicCegarLoop]: 4053 mSDtfsCounter, 7932 mSDsluCounter, 5226 mSDsCounter, 0 mSdLazyCounter, 18863 mSolverCounterSat, 4880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8261 SdHoareTripleChecker+Valid, 9279 SdHoareTripleChecker+Invalid, 23743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4880 IncrementalHoareTripleChecker+Valid, 18863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2021-12-18 15:23:16,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8261 Valid, 9279 Invalid, 23743 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4880 Valid, 18863 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time] [2021-12-18 15:23:16,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8251 states. [2021-12-18 15:23:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8251 to 6495. [2021-12-18 15:23:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6495 states, 4644 states have (on average 1.3914728682170543) internal successors, (6462), 4877 states have internal predecessors, (6462), 1469 states have call successors, (1469), 389 states have call predecessors, (1469), 381 states have return successors, (1507), 1339 states have call predecessors, (1507), 1392 states have call successors, (1507) [2021-12-18 15:23:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6495 states to 6495 states and 9438 transitions. [2021-12-18 15:23:16,928 INFO L78 Accepts]: Start accepts. Automaton has 6495 states and 9438 transitions. Word has length 196 [2021-12-18 15:23:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:23:16,929 INFO L470 AbstractCegarLoop]: Abstraction has 6495 states and 9438 transitions. [2021-12-18 15:23:16,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 15:23:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6495 states and 9438 transitions. [2021-12-18 15:23:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-18 15:23:16,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:23:16,933 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:23:16,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-18 15:23:16,934 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:23:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:23:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1566357377, now seen corresponding path program 1 times [2021-12-18 15:23:16,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:23:16,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893341463] [2021-12-18 15:23:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:23:16,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:23:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:23:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:23:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:23:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:23:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:23:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:23:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 15:23:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:23:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:23:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 15:23:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 15:23:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 15:23:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 15:23:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 15:23:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 15:23:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-18 15:23:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 15:23:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-18 15:23:17,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:23:17,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893341463] [2021-12-18 15:23:17,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893341463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:23:17,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:23:17,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 15:23:17,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524116805] [2021-12-18 15:23:17,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:23:17,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 15:23:17,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:23:17,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 15:23:17,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:23:17,387 INFO L87 Difference]: Start difference. First operand 6495 states and 9438 transitions. Second operand has 9 states, 8 states have (on average 15.375) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (29), 7 states have call predecessors, (29), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 15:23:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:23:47,843 INFO L93 Difference]: Finished difference Result 14800 states and 22012 transitions. [2021-12-18 15:23:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 15:23:47,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 15.375) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (29), 7 states have call predecessors, (29), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 193 [2021-12-18 15:23:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:23:47,924 INFO L225 Difference]: With dead ends: 14800 [2021-12-18 15:23:47,925 INFO L226 Difference]: Without dead ends: 8311 [2021-12-18 15:23:47,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-12-18 15:23:47,935 INFO L933 BasicCegarLoop]: 4049 mSDtfsCounter, 8383 mSDsluCounter, 6677 mSDsCounter, 0 mSdLazyCounter, 22837 mSolverCounterSat, 5086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8715 SdHoareTripleChecker+Valid, 10726 SdHoareTripleChecker+Invalid, 27923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5086 IncrementalHoareTripleChecker+Valid, 22837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2021-12-18 15:23:47,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8715 Valid, 10726 Invalid, 27923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5086 Valid, 22837 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2021-12-18 15:23:47,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8311 states. [2021-12-18 15:23:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8311 to 6521. [2021-12-18 15:23:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6521 states, 4663 states have (on average 1.392236757452284) internal successors, (6492), 4901 states have internal predecessors, (6492), 1474 states have call successors, (1474), 391 states have call predecessors, (1474), 383 states have return successors, (1510), 1344 states have call predecessors, (1510), 1397 states have call successors, (1510) [2021-12-18 15:23:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6521 states to 6521 states and 9476 transitions. [2021-12-18 15:23:48,145 INFO L78 Accepts]: Start accepts. Automaton has 6521 states and 9476 transitions. Word has length 193 [2021-12-18 15:23:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:23:48,145 INFO L470 AbstractCegarLoop]: Abstraction has 6521 states and 9476 transitions. [2021-12-18 15:23:48,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 15.375) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (29), 7 states have call predecessors, (29), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 15:23:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 6521 states and 9476 transitions. [2021-12-18 15:23:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-12-18 15:23:48,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:23:48,149 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:23:48,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-18 15:23:48,149 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:23:48,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:23:48,150 INFO L85 PathProgramCache]: Analyzing trace with hash -450404689, now seen corresponding path program 1 times [2021-12-18 15:23:48,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:23:48,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418402785] [2021-12-18 15:23:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:23:48,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:23:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:23:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:23:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 15:23:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:23:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:23:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 15:23:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 15:23:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:23:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:23:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 15:23:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 15:23:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 15:23:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 15:23:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 15:23:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 15:23:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 15:23:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-18 15:23:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 15:23:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 15:23:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:23:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:23:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-18 15:23:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-18 15:23:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-18 15:23:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-18 15:23:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-18 15:23:48,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:23:48,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418402785] [2021-12-18 15:23:48,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418402785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:23:48,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:23:48,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 15:23:48,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919577286] [2021-12-18 15:23:48,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:23:48,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 15:23:48,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:23:48,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 15:23:48,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-18 15:23:48,639 INFO L87 Difference]: Start difference. First operand 6521 states and 9476 transitions. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 7 states have internal predecessors, (157), 3 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-18 15:24:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:24:22,461 INFO L93 Difference]: Finished difference Result 14682 states and 21804 transitions. [2021-12-18 15:24:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 15:24:22,462 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 7 states have internal predecessors, (157), 3 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 246 [2021-12-18 15:24:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:24:22,487 INFO L225 Difference]: With dead ends: 14682 [2021-12-18 15:24:22,487 INFO L226 Difference]: Without dead ends: 8167 [2021-12-18 15:24:22,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-12-18 15:24:22,507 INFO L933 BasicCegarLoop]: 4213 mSDtfsCounter, 8338 mSDsluCounter, 8661 mSDsCounter, 0 mSdLazyCounter, 26936 mSolverCounterSat, 4547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8774 SdHoareTripleChecker+Valid, 12874 SdHoareTripleChecker+Invalid, 31483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4547 IncrementalHoareTripleChecker+Valid, 26936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2021-12-18 15:24:22,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8774 Valid, 12874 Invalid, 31483 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4547 Valid, 26936 Invalid, 0 Unknown, 0 Unchecked, 33.0s Time] [2021-12-18 15:24:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8167 states. [2021-12-18 15:24:22,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8167 to 6535. [2021-12-18 15:24:22,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 4673 states have (on average 1.3913973892574363) internal successors, (6502), 4911 states have internal predecessors, (6502), 1476 states have call successors, (1476), 393 states have call predecessors, (1476), 385 states have return successors, (1512), 1346 states have call predecessors, (1512), 1399 states have call successors, (1512) [2021-12-18 15:24:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 9490 transitions. [2021-12-18 15:24:22,741 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 9490 transitions. Word has length 246 [2021-12-18 15:24:22,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:24:22,741 INFO L470 AbstractCegarLoop]: Abstraction has 6535 states and 9490 transitions. [2021-12-18 15:24:22,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 7 states have internal predecessors, (157), 3 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-18 15:24:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 9490 transitions. [2021-12-18 15:24:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-18 15:24:22,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:24:22,745 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:24:22,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-18 15:24:22,746 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:24:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:24:22,746 INFO L85 PathProgramCache]: Analyzing trace with hash -676941085, now seen corresponding path program 1 times [2021-12-18 15:24:22,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:24:22,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526054816] [2021-12-18 15:24:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:24:22,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:24:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:24:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:24:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:24:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:24:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:24:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:24:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 15:24:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:24:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:24:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 15:24:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 15:24:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 15:24:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 15:24:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 15:24:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 15:24:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 15:24:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:24:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:24:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 15:24:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 15:24:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-18 15:24:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-18 15:24:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-18 15:24:23,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:24:23,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526054816] [2021-12-18 15:24:23,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526054816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:24:23,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:24:23,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 15:24:23,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083019233] [2021-12-18 15:24:23,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:24:23,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 15:24:23,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:24:23,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 15:24:23,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-18 15:24:23,265 INFO L87 Difference]: Start difference. First operand 6535 states and 9490 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 15:24:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:24:49,222 INFO L93 Difference]: Finished difference Result 14281 states and 21088 transitions. [2021-12-18 15:24:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 15:24:49,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 204 [2021-12-18 15:24:49,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:24:49,243 INFO L225 Difference]: With dead ends: 14281 [2021-12-18 15:24:49,243 INFO L226 Difference]: Without dead ends: 7752 [2021-12-18 15:24:49,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-12-18 15:24:49,257 INFO L933 BasicCegarLoop]: 3959 mSDtfsCounter, 7442 mSDsluCounter, 4460 mSDsCounter, 0 mSdLazyCounter, 16614 mSolverCounterSat, 4252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7880 SdHoareTripleChecker+Valid, 8419 SdHoareTripleChecker+Invalid, 20866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4252 IncrementalHoareTripleChecker+Valid, 16614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2021-12-18 15:24:49,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7880 Valid, 8419 Invalid, 20866 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4252 Valid, 16614 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2021-12-18 15:24:49,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7752 states. [2021-12-18 15:24:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7752 to 6535. [2021-12-18 15:24:49,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 4673 states have (on average 1.3911833939653329) internal successors, (6501), 4911 states have internal predecessors, (6501), 1476 states have call successors, (1476), 393 states have call predecessors, (1476), 385 states have return successors, (1512), 1346 states have call predecessors, (1512), 1399 states have call successors, (1512) [2021-12-18 15:24:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 9489 transitions. [2021-12-18 15:24:49,495 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 9489 transitions. Word has length 204 [2021-12-18 15:24:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:24:49,495 INFO L470 AbstractCegarLoop]: Abstraction has 6535 states and 9489 transitions. [2021-12-18 15:24:49,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 15:24:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 9489 transitions. [2021-12-18 15:24:49,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-18 15:24:49,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:24:49,500 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:24:49,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-18 15:24:49,501 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:24:49,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:24:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash -450398354, now seen corresponding path program 1 times [2021-12-18 15:24:49,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:24:49,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499641417] [2021-12-18 15:24:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:24:49,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:24:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:24:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:24:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:24:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:24:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:24:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:24:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 15:24:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:24:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:24:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 15:24:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 15:24:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 15:24:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 15:24:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 15:24:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 15:24:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 15:24:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 15:24:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:24:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:24:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-18 15:24:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 15:24:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-18 15:24:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-18 15:24:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-18 15:24:49,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:24:49,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499641417] [2021-12-18 15:24:49,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499641417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:24:49,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:24:49,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 15:24:49,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985994419] [2021-12-18 15:24:49,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:24:49,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 15:24:49,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:24:49,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 15:24:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-18 15:24:49,969 INFO L87 Difference]: Start difference. First operand 6535 states and 9489 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 15:25:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:25:15,988 INFO L93 Difference]: Finished difference Result 14319 states and 21149 transitions. [2021-12-18 15:25:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 15:25:15,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 217 [2021-12-18 15:25:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:25:16,012 INFO L225 Difference]: With dead ends: 14319 [2021-12-18 15:25:16,013 INFO L226 Difference]: Without dead ends: 7790 [2021-12-18 15:25:16,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-12-18 15:25:16,028 INFO L933 BasicCegarLoop]: 4021 mSDtfsCounter, 7141 mSDsluCounter, 4770 mSDsCounter, 0 mSdLazyCounter, 16786 mSolverCounterSat, 4187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7591 SdHoareTripleChecker+Valid, 8791 SdHoareTripleChecker+Invalid, 20973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4187 IncrementalHoareTripleChecker+Valid, 16786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2021-12-18 15:25:16,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7591 Valid, 8791 Invalid, 20973 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4187 Valid, 16786 Invalid, 0 Unknown, 0 Unchecked, 25.3s Time] [2021-12-18 15:25:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2021-12-18 15:25:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 6545. [2021-12-18 15:25:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6545 states, 4682 states have (on average 1.3908586074327212) internal successors, (6512), 4918 states have internal predecessors, (6512), 1476 states have call successors, (1476), 393 states have call predecessors, (1476), 386 states have return successors, (1514), 1347 states have call predecessors, (1514), 1399 states have call successors, (1514) [2021-12-18 15:25:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6545 states to 6545 states and 9502 transitions. [2021-12-18 15:25:16,328 INFO L78 Accepts]: Start accepts. Automaton has 6545 states and 9502 transitions. Word has length 217 [2021-12-18 15:25:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:25:16,329 INFO L470 AbstractCegarLoop]: Abstraction has 6545 states and 9502 transitions. [2021-12-18 15:25:16,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 15:25:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6545 states and 9502 transitions. [2021-12-18 15:25:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-18 15:25:16,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:25:16,334 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:25:16,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-18 15:25:16,334 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:25:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:25:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1783947327, now seen corresponding path program 2 times [2021-12-18 15:25:16,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:25:16,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861250710] [2021-12-18 15:25:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:25:16,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:25:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:25:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:25:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 15:25:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:25:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 15:25:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 15:25:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:25:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 15:25:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 524 proven. 235 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-12-18 15:25:16,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:25:16,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861250710] [2021-12-18 15:25:16,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861250710] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:25:16,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018068985] [2021-12-18 15:25:16,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 15:25:16,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:25:16,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:25:16,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:25:16,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 15:25:18,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 15:25:18,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 15:25:18,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 10268 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 15:25:18,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:25:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1013 trivial. 0 not checked. [2021-12-18 15:25:18,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 15:25:18,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018068985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:25:18,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 15:25:18,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2021-12-18 15:25:18,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465137661] [2021-12-18 15:25:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:25:18,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:25:18,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:25:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:25:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-18 15:25:18,868 INFO L87 Difference]: Start difference. First operand 6545 states and 9502 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 15:25:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:25:19,113 INFO L93 Difference]: Finished difference Result 13089 states and 19007 transitions. [2021-12-18 15:25:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:25:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 216 [2021-12-18 15:25:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:25:19,132 INFO L225 Difference]: With dead ends: 13089 [2021-12-18 15:25:19,132 INFO L226 Difference]: Without dead ends: 6550 [2021-12-18 15:25:19,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-18 15:25:19,146 INFO L933 BasicCegarLoop]: 5054 mSDtfsCounter, 24 mSDsluCounter, 5025 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 10079 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 15:25:19,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 10079 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 15:25:19,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6550 states. [2021-12-18 15:25:19,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6550 to 6543. [2021-12-18 15:25:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6543 states, 4681 states have (on average 1.390728476821192) internal successors, (6510), 4917 states have internal predecessors, (6510), 1475 states have call successors, (1475), 393 states have call predecessors, (1475), 386 states have return successors, (1513), 1346 states have call predecessors, (1513), 1398 states have call successors, (1513) [2021-12-18 15:25:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6543 states to 6543 states and 9498 transitions. [2021-12-18 15:25:19,426 INFO L78 Accepts]: Start accepts. Automaton has 6543 states and 9498 transitions. Word has length 216 [2021-12-18 15:25:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:25:19,426 INFO L470 AbstractCegarLoop]: Abstraction has 6543 states and 9498 transitions. [2021-12-18 15:25:19,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 15:25:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 6543 states and 9498 transitions. [2021-12-18 15:25:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-12-18 15:25:19,431 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:25:19,431 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:25:19,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 15:25:19,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:25:19,631 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:25:19,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:25:19,634 INFO L85 PathProgramCache]: Analyzing trace with hash 553195722, now seen corresponding path program 1 times [2021-12-18 15:25:19,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:25:19,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621029244] [2021-12-18 15:25:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:25:19,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:25:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:25:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:25:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:25:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:25:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 15:25:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:25:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 15:25:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 524 proven. 235 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-12-18 15:25:20,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:25:20,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621029244] [2021-12-18 15:25:20,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621029244] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:25:20,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829457795] [2021-12-18 15:25:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:25:20,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:25:20,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:25:20,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:25:20,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 15:25:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:21,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 10779 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 15:25:21,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:25:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 524 proven. 235 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-12-18 15:25:22,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 15:25:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 524 proven. 235 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-12-18 15:25:22,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829457795] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 15:25:22,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 15:25:22,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 27 [2021-12-18 15:25:22,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059732266] [2021-12-18 15:25:22,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 15:25:22,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-18 15:25:22,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:25:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-18 15:25:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2021-12-18 15:25:22,736 INFO L87 Difference]: Start difference. First operand 6543 states and 9498 transitions. Second operand has 27 states, 27 states have (on average 7.037037037037037) internal successors, (190), 25 states have internal predecessors, (190), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:25:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:25:49,942 INFO L93 Difference]: Finished difference Result 14034 states and 20565 transitions. [2021-12-18 15:25:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-18 15:25:49,942 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.037037037037037) internal successors, (190), 25 states have internal predecessors, (190), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 213 [2021-12-18 15:25:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:25:49,962 INFO L225 Difference]: With dead ends: 14034 [2021-12-18 15:25:49,962 INFO L226 Difference]: Without dead ends: 7497 [2021-12-18 15:25:49,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2021-12-18 15:25:49,975 INFO L933 BasicCegarLoop]: 3970 mSDtfsCounter, 5564 mSDsluCounter, 6209 mSDsCounter, 0 mSdLazyCounter, 19469 mSolverCounterSat, 2737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5982 SdHoareTripleChecker+Valid, 10179 SdHoareTripleChecker+Invalid, 22206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2737 IncrementalHoareTripleChecker+Valid, 19469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2021-12-18 15:25:49,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5982 Valid, 10179 Invalid, 22206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2737 Valid, 19469 Invalid, 0 Unknown, 0 Unchecked, 26.4s Time] [2021-12-18 15:25:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7497 states. [2021-12-18 15:25:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7497 to 6663. [2021-12-18 15:25:50,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6663 states, 4801 states have (on average 1.3909602166215371) internal successors, (6678), 5037 states have internal predecessors, (6678), 1475 states have call successors, (1475), 393 states have call predecessors, (1475), 386 states have return successors, (1513), 1346 states have call predecessors, (1513), 1398 states have call successors, (1513) [2021-12-18 15:25:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6663 states to 6663 states and 9666 transitions. [2021-12-18 15:25:50,202 INFO L78 Accepts]: Start accepts. Automaton has 6663 states and 9666 transitions. Word has length 213 [2021-12-18 15:25:50,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:25:50,202 INFO L470 AbstractCegarLoop]: Abstraction has 6663 states and 9666 transitions. [2021-12-18 15:25:50,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.037037037037037) internal successors, (190), 25 states have internal predecessors, (190), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-18 15:25:50,203 INFO L276 IsEmpty]: Start isEmpty. Operand 6663 states and 9666 transitions. [2021-12-18 15:25:50,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-12-18 15:25:50,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:25:50,208 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:25:50,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 15:25:50,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-18 15:25:50,436 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:25:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:25:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash 232525876, now seen corresponding path program 1 times [2021-12-18 15:25:50,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:25:50,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054529237] [2021-12-18 15:25:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:25:50,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:25:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:25:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:25:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:25:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:25:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 15:25:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:25:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 15:25:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 15:25:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 15:25:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 15:25:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 15:25:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 15:25:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 15:25:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 15:25:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:25:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:25:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-18 15:25:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 15:25:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 15:25:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-18 15:25:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-18 15:25:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-18 15:25:50,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:25:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054529237] [2021-12-18 15:25:50,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054529237] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:25:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923781749] [2021-12-18 15:25:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:25:50,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:25:50,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:25:50,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:25:50,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 15:25:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:52,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 11242 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 15:25:52,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:25:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-18 15:25:53,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 15:25:53,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923781749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:25:53,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 15:25:53,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-18 15:25:53,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472661728] [2021-12-18 15:25:53,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:25:53,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:25:53,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:25:53,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:25:53,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:25:53,027 INFO L87 Difference]: Start difference. First operand 6663 states and 9666 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-18 15:25:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:25:53,228 INFO L93 Difference]: Finished difference Result 13322 states and 19376 transitions. [2021-12-18 15:25:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:25:53,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 239 [2021-12-18 15:25:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:25:53,247 INFO L225 Difference]: With dead ends: 13322 [2021-12-18 15:25:53,247 INFO L226 Difference]: Without dead ends: 6665 [2021-12-18 15:25:53,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:25:53,262 INFO L933 BasicCegarLoop]: 5044 mSDtfsCounter, 0 mSDsluCounter, 5040 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 15:25:53,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 15:25:53,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2021-12-18 15:25:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6665. [2021-12-18 15:25:53,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6665 states, 4803 states have (on average 1.3907974182802416) internal successors, (6680), 5039 states have internal predecessors, (6680), 1475 states have call successors, (1475), 393 states have call predecessors, (1475), 386 states have return successors, (1513), 1346 states have call predecessors, (1513), 1398 states have call successors, (1513) [2021-12-18 15:25:53,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 9668 transitions. [2021-12-18 15:25:53,468 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 9668 transitions. Word has length 239 [2021-12-18 15:25:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:25:53,469 INFO L470 AbstractCegarLoop]: Abstraction has 6665 states and 9668 transitions. [2021-12-18 15:25:53,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-18 15:25:53,469 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 9668 transitions. [2021-12-18 15:25:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-18 15:25:53,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:25:53,474 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:25:53,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 15:25:53,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-18 15:25:53,675 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:25:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:25:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 512298920, now seen corresponding path program 1 times [2021-12-18 15:25:53,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:25:53,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691017043] [2021-12-18 15:25:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:25:53,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:25:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:25:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:25:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 15:25:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:25:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 15:25:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 15:25:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:25:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 15:25:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 15:25:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 15:25:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 15:25:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 15:25:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 15:25:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 15:25:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-18 15:25:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 15:25:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 15:25:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 15:25:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:25:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:25:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-18 15:25:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-18 15:25:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-18 15:25:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-18 15:25:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-18 15:25:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-18 15:25:54,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:25:54,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691017043] [2021-12-18 15:25:54,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691017043] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:25:54,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474298187] [2021-12-18 15:25:54,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:25:54,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:25:54,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:25:54,196 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:25:54,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 15:25:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:56,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 11447 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-18 15:25:56,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:25:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-18 15:25:56,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 15:25:56,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474298187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:25:56,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 15:25:56,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2021-12-18 15:25:56,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071292425] [2021-12-18 15:25:56,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:25:56,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:25:56,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:25:56,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:25:56,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-18 15:25:56,489 INFO L87 Difference]: Start difference. First operand 6665 states and 9668 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 4 states have call successors, (33), 4 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-18 15:26:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:26:02,416 INFO L93 Difference]: Finished difference Result 9848 states and 14143 transitions. [2021-12-18 15:26:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 15:26:02,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 4 states have call successors, (33), 4 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 281 [2021-12-18 15:26:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:26:02,430 INFO L225 Difference]: With dead ends: 9848 [2021-12-18 15:26:02,431 INFO L226 Difference]: Without dead ends: 4403 [2021-12-18 15:26:02,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-18 15:26:02,441 INFO L933 BasicCegarLoop]: 4569 mSDtfsCounter, 5956 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 2558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6190 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 4463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2558 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-18 15:26:02,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6190 Valid, 5641 Invalid, 4463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2558 Valid, 1905 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-18 15:26:02,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4403 states. [2021-12-18 15:26:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4403 to 4310. [2021-12-18 15:26:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 3157 states have (on average 1.386759581881533) internal successors, (4378), 3280 states have internal predecessors, (4378), 902 states have call successors, (902), 269 states have call predecessors, (902), 250 states have return successors, (860), 825 states have call predecessors, (860), 854 states have call successors, (860) [2021-12-18 15:26:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 6140 transitions. [2021-12-18 15:26:02,625 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 6140 transitions. Word has length 281 [2021-12-18 15:26:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:26:02,625 INFO L470 AbstractCegarLoop]: Abstraction has 4310 states and 6140 transitions. [2021-12-18 15:26:02,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 4 states have call successors, (33), 4 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-18 15:26:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 6140 transitions. [2021-12-18 15:26:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-12-18 15:26:02,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:26:02,631 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:26:02,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 15:26:02,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:26:02,832 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:26:02,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:26:02,832 INFO L85 PathProgramCache]: Analyzing trace with hash 859152875, now seen corresponding path program 1 times [2021-12-18 15:26:02,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:26:02,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498826345] [2021-12-18 15:26:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:26:02,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:26:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:26:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:26:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 15:26:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:26:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:26:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 15:26:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 15:26:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:26:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:26:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 15:26:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 15:26:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 15:26:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 15:26:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 15:26:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 15:26:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 15:26:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 15:26:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:26:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:26:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-18 15:26:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-18 15:26:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 15:26:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-18 15:26:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-18 15:26:03,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:26:03,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498826345] [2021-12-18 15:26:03,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498826345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:26:03,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:26:03,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 15:26:03,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007011081] [2021-12-18 15:26:03,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:26:03,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 15:26:03,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:26:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 15:26:03,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:26:03,276 INFO L87 Difference]: Start difference. First operand 4310 states and 6140 transitions. Second operand has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-18 15:26:35,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:26:35,645 INFO L93 Difference]: Finished difference Result 9755 states and 14204 transitions. [2021-12-18 15:26:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 15:26:35,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 259 [2021-12-18 15:26:35,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:26:35,661 INFO L225 Difference]: With dead ends: 9755 [2021-12-18 15:26:35,661 INFO L226 Difference]: Without dead ends: 5379 [2021-12-18 15:26:35,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-18 15:26:35,667 INFO L933 BasicCegarLoop]: 3957 mSDtfsCounter, 6885 mSDsluCounter, 5347 mSDsCounter, 0 mSdLazyCounter, 21027 mSolverCounterSat, 3747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7205 SdHoareTripleChecker+Valid, 9304 SdHoareTripleChecker+Invalid, 24774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3747 IncrementalHoareTripleChecker+Valid, 21027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2021-12-18 15:26:35,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7205 Valid, 9304 Invalid, 24774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3747 Valid, 21027 Invalid, 0 Unknown, 0 Unchecked, 31.6s Time] [2021-12-18 15:26:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5379 states. [2021-12-18 15:26:35,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5379 to 4294. [2021-12-18 15:26:35,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 3143 states have (on average 1.385618835507477) internal successors, (4355), 3265 states have internal predecessors, (4355), 900 states have call successors, (900), 269 states have call predecessors, (900), 250 states have return successors, (858), 823 states have call predecessors, (858), 852 states have call successors, (858) [2021-12-18 15:26:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 6113 transitions. [2021-12-18 15:26:35,809 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 6113 transitions. Word has length 259 [2021-12-18 15:26:35,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:26:35,810 INFO L470 AbstractCegarLoop]: Abstraction has 4294 states and 6113 transitions. [2021-12-18 15:26:35,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-18 15:26:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 6113 transitions. [2021-12-18 15:26:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-12-18 15:26:35,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:26:35,816 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:26:35,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-18 15:26:35,816 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:26:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:26:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash 296477444, now seen corresponding path program 1 times [2021-12-18 15:26:35,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:26:35,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298704715] [2021-12-18 15:26:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:26:35,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:26:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:26:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:26:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:26:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:26:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:26:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:26:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 15:26:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:26:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:26:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 15:26:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 15:26:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 15:26:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 15:26:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 15:26:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 15:26:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 15:26:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 15:26:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:26:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:26:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-18 15:26:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-18 15:26:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-18 15:26:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-18 15:26:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-18 15:26:36,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:26:36,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298704715] [2021-12-18 15:26:36,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298704715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:26:36,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:26:36,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 15:26:36,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545785312] [2021-12-18 15:26:36,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:26:36,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 15:26:36,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:26:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 15:26:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:26:36,290 INFO L87 Difference]: Start difference. First operand 4294 states and 6113 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 15:27:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:27:00,360 INFO L93 Difference]: Finished difference Result 9698 states and 14112 transitions. [2021-12-18 15:27:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 15:27:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 256 [2021-12-18 15:27:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:27:00,376 INFO L225 Difference]: With dead ends: 9698 [2021-12-18 15:27:00,376 INFO L226 Difference]: Without dead ends: 5410 [2021-12-18 15:27:00,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-12-18 15:27:00,383 INFO L933 BasicCegarLoop]: 3999 mSDtfsCounter, 7964 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 11280 mSolverCounterSat, 4806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8295 SdHoareTripleChecker+Valid, 6255 SdHoareTripleChecker+Invalid, 16086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4806 IncrementalHoareTripleChecker+Valid, 11280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2021-12-18 15:27:00,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8295 Valid, 6255 Invalid, 16086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4806 Valid, 11280 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time] [2021-12-18 15:27:00,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5410 states. [2021-12-18 15:27:00,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5410 to 4297. [2021-12-18 15:27:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 3146 states have (on average 1.3852511125238398) internal successors, (4358), 3268 states have internal predecessors, (4358), 900 states have call successors, (900), 269 states have call predecessors, (900), 250 states have return successors, (858), 823 states have call predecessors, (858), 852 states have call successors, (858) [2021-12-18 15:27:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 6116 transitions. [2021-12-18 15:27:00,529 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 6116 transitions. Word has length 256 [2021-12-18 15:27:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:27:00,529 INFO L470 AbstractCegarLoop]: Abstraction has 4297 states and 6116 transitions. [2021-12-18 15:27:00,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 15:27:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 6116 transitions. [2021-12-18 15:27:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-12-18 15:27:00,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:27:00,536 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:27:00,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-18 15:27:00,536 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:27:00,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:27:00,537 INFO L85 PathProgramCache]: Analyzing trace with hash 669013086, now seen corresponding path program 1 times [2021-12-18 15:27:00,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:27:00,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261913824] [2021-12-18 15:27:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:27:00,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:27:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:27:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:27:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 15:27:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:27:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:27:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 15:27:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 15:27:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:27:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:27:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 15:27:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 15:27:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 15:27:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 15:27:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 15:27:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 15:27:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 15:27:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 15:27:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 15:27:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 15:27:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-18 15:27:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:27:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:27:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-18 15:27:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-18 15:27:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:01,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 15:27:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-18 15:27:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-18 15:27:01,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:27:01,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261913824] [2021-12-18 15:27:01,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261913824] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:27:01,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815850432] [2021-12-18 15:27:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:27:01,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:27:01,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:27:01,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:27:01,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 15:27:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:03,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 11766 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 15:27:03,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:27:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-18 15:27:03,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 15:27:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-18 15:27:03,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815850432] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 15:27:03,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 15:27:03,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 11 [2021-12-18 15:27:03,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956709985] [2021-12-18 15:27:03,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 15:27:03,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 15:27:03,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:27:03,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 15:27:03,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-18 15:27:03,924 INFO L87 Difference]: Start difference. First operand 4297 states and 6116 transitions. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 6 states have internal predecessors, (258), 2 states have call successors, (68), 7 states have call predecessors, (68), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-12-18 15:27:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:27:30,010 INFO L93 Difference]: Finished difference Result 9743 states and 14184 transitions. [2021-12-18 15:27:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 15:27:30,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 6 states have internal predecessors, (258), 2 states have call successors, (68), 7 states have call predecessors, (68), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 299 [2021-12-18 15:27:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:27:30,030 INFO L225 Difference]: With dead ends: 9743 [2021-12-18 15:27:30,030 INFO L226 Difference]: Without dead ends: 5452 [2021-12-18 15:27:30,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-12-18 15:27:30,038 INFO L933 BasicCegarLoop]: 3953 mSDtfsCounter, 9785 mSDsluCounter, 3665 mSDsCounter, 0 mSdLazyCounter, 15132 mSolverCounterSat, 6127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10123 SdHoareTripleChecker+Valid, 7618 SdHoareTripleChecker+Invalid, 21259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6127 IncrementalHoareTripleChecker+Valid, 15132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2021-12-18 15:27:30,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10123 Valid, 7618 Invalid, 21259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6127 Valid, 15132 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2021-12-18 15:27:30,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5452 states. [2021-12-18 15:27:30,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5452 to 4335. [2021-12-18 15:27:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4335 states, 3180 states have (on average 1.3849056603773584) internal successors, (4404), 3302 states have internal predecessors, (4404), 904 states have call successors, (904), 269 states have call predecessors, (904), 250 states have return successors, (862), 827 states have call predecessors, (862), 856 states have call successors, (862) [2021-12-18 15:27:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4335 states to 4335 states and 6170 transitions. [2021-12-18 15:27:30,203 INFO L78 Accepts]: Start accepts. Automaton has 4335 states and 6170 transitions. Word has length 299 [2021-12-18 15:27:30,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:27:30,204 INFO L470 AbstractCegarLoop]: Abstraction has 4335 states and 6170 transitions. [2021-12-18 15:27:30,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 6 states have internal predecessors, (258), 2 states have call successors, (68), 7 states have call predecessors, (68), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-12-18 15:27:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4335 states and 6170 transitions. [2021-12-18 15:27:30,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-12-18 15:27:30,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:27:30,208 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2021-12-18 15:27:30,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 15:27:30,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:27:30,412 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:27:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:27:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash 946702968, now seen corresponding path program 1 times [2021-12-18 15:27:30,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:27:30,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306607269] [2021-12-18 15:27:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:27:30,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:27:30,930 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 15:27:30,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21241471] [2021-12-18 15:27:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:27:30,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:27:30,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:27:30,931 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:27:30,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 15:27:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:33,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 13135 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 15:27:33,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:27:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-18 15:27:33,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 15:27:33,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:27:33,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306607269] [2021-12-18 15:27:33,537 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 15:27:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21241471] [2021-12-18 15:27:33,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21241471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:27:33,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:27:33,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 15:27:33,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583501007] [2021-12-18 15:27:33,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:27:33,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:27:33,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:27:33,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:27:33,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 15:27:33,538 INFO L87 Difference]: Start difference. First operand 4335 states and 6170 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 15:27:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:27:33,683 INFO L93 Difference]: Finished difference Result 8665 states and 12342 transitions. [2021-12-18 15:27:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:27:33,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 299 [2021-12-18 15:27:33,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:27:33,695 INFO L225 Difference]: With dead ends: 8665 [2021-12-18 15:27:33,695 INFO L226 Difference]: Without dead ends: 4336 [2021-12-18 15:27:33,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 15:27:33,704 INFO L933 BasicCegarLoop]: 5042 mSDtfsCounter, 0 mSDsluCounter, 5038 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10080 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 15:27:33,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10080 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 15:27:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2021-12-18 15:27:33,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4336. [2021-12-18 15:27:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 3181 states have (on average 1.3847846589122916) internal successors, (4405), 3303 states have internal predecessors, (4405), 904 states have call successors, (904), 269 states have call predecessors, (904), 250 states have return successors, (862), 827 states have call predecessors, (862), 856 states have call successors, (862) [2021-12-18 15:27:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 6171 transitions. [2021-12-18 15:27:33,924 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 6171 transitions. Word has length 299 [2021-12-18 15:27:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:27:33,924 INFO L470 AbstractCegarLoop]: Abstraction has 4336 states and 6171 transitions. [2021-12-18 15:27:33,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 15:27:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 6171 transitions. [2021-12-18 15:27:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-18 15:27:33,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:27:33,929 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:27:33,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 15:27:34,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-12-18 15:27:34,148 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:27:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:27:34,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2140110498, now seen corresponding path program 1 times [2021-12-18 15:27:34,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:27:34,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315369120] [2021-12-18 15:27:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:27:34,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:27:34,316 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 15:27:34,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367932772] [2021-12-18 15:27:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:27:34,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:27:34,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:27:34,317 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:27:34,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Killed by 15