./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.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 bf300fda993e6da191f561c0f8e677f22a7de271b61b51439ca8ec3e0ecdedef --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:32:19,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:32:19,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:32:19,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:32:19,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:32:19,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:32:19,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:32:19,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:32:19,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:32:19,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:32:19,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:32:19,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:32:19,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:32:19,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:32:19,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:32:19,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:32:19,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:32:19,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:32:19,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:32:19,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:32:19,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:32:19,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:32:19,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:32:19,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:32:19,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:32:19,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:32:19,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:32:19,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:32:19,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:32:19,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:32:19,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:32:19,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:32:19,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:32:19,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:32:19,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:32:19,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:32:19,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:32:19,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:32:19,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:32:19,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:32:19,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:32:19,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:32:19,356 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:32:19,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:32:19,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:32:19,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:32:19,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:32:19,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:32:19,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:32:19,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:32:19,357 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:32:19,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:32:19,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:32:19,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:32:19,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:32:19,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:32:19,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:32:19,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:32:19,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:32:19,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:32:19,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:32:19,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:32:19,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:32:19,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:32:19,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:32:19,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:32:19,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:32:19,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:32:19,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:32:19,359 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:32:19,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:32:19,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:32:19,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:32:19,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf300fda993e6da191f561c0f8e677f22a7de271b61b51439ca8ec3e0ecdedef [2021-12-22 14:32:19,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:32:19,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:32:19,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:32:19,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:32:19,571 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:32:19,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2021-12-22 14:32:19,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1837d9c/f8e3959f959641ffa6151ca7aa9ca140/FLAGa591965b6 [2021-12-22 14:32:20,098 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:32:20,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2021-12-22 14:32:20,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1837d9c/f8e3959f959641ffa6151ca7aa9ca140/FLAGa591965b6 [2021-12-22 14:32:20,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1837d9c/f8e3959f959641ffa6151ca7aa9ca140 [2021-12-22 14:32:20,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:32:20,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:32:20,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:32:20,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:32:20,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:32:20,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:32:20" (1/1) ... [2021-12-22 14:32:20,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72018615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:20, skipping insertion in model container [2021-12-22 14:32:20,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:32:20" (1/1) ... [2021-12-22 14:32:20,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:32:20,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:32:21,118 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i[120339,120352] [2021-12-22 14:32:21,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:32:21,191 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:32:21,349 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i[120339,120352] [2021-12-22 14:32:21,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:32:21,436 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:32:21,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21 WrapperNode [2021-12-22 14:32:21,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:32:21,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:32:21,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:32:21,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:32:21,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (1/1) ... [2021-12-22 14:32:21,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (1/1) ... [2021-12-22 14:32:21,564 INFO L137 Inliner]: procedures = 152, calls = 622, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 1714 [2021-12-22 14:32:21,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:32:21,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:32:21,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:32:21,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:32:21,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (1/1) ... [2021-12-22 14:32:21,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (1/1) ... [2021-12-22 14:32:21,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (1/1) ... [2021-12-22 14:32:21,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (1/1) ... [2021-12-22 14:32:21,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (1/1) ... [2021-12-22 14:32:21,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (1/1) ... [2021-12-22 14:32:21,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (1/1) ... [2021-12-22 14:32:21,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:32:21,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:32:21,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:32:21,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:32:21,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (1/1) ... [2021-12-22 14:32:21,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:32:21,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:32:21,709 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) [2021-12-22 14:32:21,737 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 [2021-12-22 14:32:21,748 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:32:21,749 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:32:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_alloc_resource [2021-12-22 14:32:21,749 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_alloc_resource [2021-12-22 14:32:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure add_interval [2021-12-22 14:32:21,749 INFO L138 BoogieDeclarations]: Found implementation of procedure add_interval [2021-12-22 14:32:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:32:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure sub_interval [2021-12-22 14:32:21,749 INFO L138 BoogieDeclarations]: Found implementation of procedure sub_interval [2021-12-22 14:32:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:32:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:32:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_mem_region [2021-12-22 14:32:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_mem_region [2021-12-22 14:32:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:32:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:32:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure free_region [2021-12-22 14:32:21,751 INFO L138 BoogieDeclarations]: Found implementation of procedure free_region [2021-12-22 14:32:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:32:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:32:21,751 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:32:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure __nonstatic_adjust_io_region [2021-12-22 14:32:21,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __nonstatic_adjust_io_region [2021-12-22 14:32:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:32:21,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:32:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:32:21,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:32:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_release_resource_db [2021-12-22 14:32:21,752 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_release_resource_db [2021-12-22 14:32:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure do_mem_probe [2021-12-22 14:32:21,753 INFO L138 BoogieDeclarations]: Found implementation of procedure do_mem_probe [2021-12-22 14:32:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_make_resource [2021-12-22 14:32:21,753 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_make_resource [2021-12-22 14:32:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:32:21,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:32:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_init [2021-12-22 14:32:21,753 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_init [2021-12-22 14:32:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_io [2021-12-22 14:32:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_io [2021-12-22 14:32:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:32:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:32:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:32:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure pccard_sysfs_add_rsrc [2021-12-22 14:32:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure pccard_sysfs_add_rsrc [2021-12-22 14:32:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:32:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure static_init [2021-12-22 14:32:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure static_init [2021-12-22 14:32:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:32:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:32:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure do_validate_mem [2021-12-22 14:32:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure do_validate_mem [2021-12-22 14:32:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_resource [2021-12-22 14:32:21,756 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_resource [2021-12-22 14:32:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_nonstatic_validate_mem [2021-12-22 14:32:21,756 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_nonstatic_validate_mem [2021-12-22 14:32:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:32:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure static_find_io [2021-12-22 14:32:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure static_find_io [2021-12-22 14:32:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-12-22 14:32:21,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-12-22 14:32:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure show_mem_db [2021-12-22 14:32:21,758 INFO L138 BoogieDeclarations]: Found implementation of procedure show_mem_db [2021-12-22 14:32:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_io [2021-12-22 14:32:21,758 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_io [2021-12-22 14:32:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:32:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-22 14:32:21,759 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-22 14:32:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:32:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:32:21,759 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:32:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:32:21,759 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:32:21,760 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:32:21,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:32:21,760 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-22 14:32:21,760 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-22 14:32:21,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:32:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2021-12-22 14:32:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2021-12-22 14:32:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_6 [2021-12-22 14:32:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_6 [2021-12-22 14:32:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_memory [2021-12-22 14:32:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_memory [2021-12-22 14:32:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_resource [2021-12-22 14:32:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_resource [2021-12-22 14:32:21,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_7 [2021-12-22 14:32:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_7 [2021-12-22 14:32:21,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:32:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:32:21,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2021-12-22 14:32:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2021-12-22 14:32:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure claim_region [2021-12-22 14:32:21,763 INFO L138 BoogieDeclarations]: Found implementation of procedure claim_region [2021-12-22 14:32:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2021-12-22 14:32:21,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2021-12-22 14:32:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure show_io_db [2021-12-22 14:32:21,763 INFO L138 BoogieDeclarations]: Found implementation of procedure show_io_db [2021-12-22 14:32:22,152 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:32:22,155 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:32:23,197 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:32:23,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:32:23,210 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:32:23,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:32:23 BoogieIcfgContainer [2021-12-22 14:32:23,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:32:23,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:32:23,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:32:23,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:32:23,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:32:20" (1/3) ... [2021-12-22 14:32:23,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3596b2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:32:23, skipping insertion in model container [2021-12-22 14:32:23,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:32:21" (2/3) ... [2021-12-22 14:32:23,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3596b2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:32:23, skipping insertion in model container [2021-12-22 14:32:23,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:32:23" (3/3) ... [2021-12-22 14:32:23,219 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2021-12-22 14:32:23,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:32:23,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:32:23,256 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:32:23,263 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 [2021-12-22 14:32:23,263 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:32:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 701 states, 534 states have (on average 1.4400749063670413) internal successors, (769), 543 states have internal predecessors, (769), 123 states have call successors, (123), 42 states have call predecessors, (123), 42 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2021-12-22 14:32:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 14:32:23,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:23,296 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] [2021-12-22 14:32:23,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:23,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash -404759991, now seen corresponding path program 1 times [2021-12-22 14:32:23,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:23,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141208709] [2021-12-22 14:32:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:23,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:32:23,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:23,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141208709] [2021-12-22 14:32:23,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141208709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:23,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:23,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:32:23,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488617265] [2021-12-22 14:32:23,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:23,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:32:23,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:32:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:32:23,609 INFO L87 Difference]: Start difference. First operand has 701 states, 534 states have (on average 1.4400749063670413) internal successors, (769), 543 states have internal predecessors, (769), 123 states have call successors, (123), 42 states have call predecessors, (123), 42 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:32:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:23,791 INFO L93 Difference]: Finished difference Result 2074 states and 3141 transitions. [2021-12-22 14:32:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:32:23,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-22 14:32:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:23,815 INFO L225 Difference]: With dead ends: 2074 [2021-12-22 14:32:23,815 INFO L226 Difference]: Without dead ends: 1372 [2021-12-22 14:32:23,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:32:23,828 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 970 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:23,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 2112 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:32:23,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-12-22 14:32:23,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1368. [2021-12-22 14:32:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1045 states have (on average 1.4363636363636363) internal successors, (1501), 1054 states have internal predecessors, (1501), 240 states have call successors, (240), 83 states have call predecessors, (240), 82 states have return successors, (234), 234 states have call predecessors, (234), 234 states have call successors, (234) [2021-12-22 14:32:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1975 transitions. [2021-12-22 14:32:23,951 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1975 transitions. Word has length 20 [2021-12-22 14:32:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:23,952 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 1975 transitions. [2021-12-22 14:32:23,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:32:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1975 transitions. [2021-12-22 14:32:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 14:32:23,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:23,955 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] [2021-12-22 14:32:23,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:32:23,955 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1675028569, now seen corresponding path program 1 times [2021-12-22 14:32:23,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:23,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898411083] [2021-12-22 14:32:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:23,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:32:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:32:24,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:24,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898411083] [2021-12-22 14:32:24,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898411083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:24,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:24,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:32:24,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117123129] [2021-12-22 14:32:24,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:24,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:32:24,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:32:24,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:32:24,038 INFO L87 Difference]: Start difference. First operand 1368 states and 1975 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:32:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:25,020 INFO L93 Difference]: Finished difference Result 4742 states and 6959 transitions. [2021-12-22 14:32:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:32:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-12-22 14:32:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:25,037 INFO L225 Difference]: With dead ends: 4742 [2021-12-22 14:32:25,038 INFO L226 Difference]: Without dead ends: 3377 [2021-12-22 14:32:25,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:32:25,042 INFO L933 BasicCegarLoop]: 1190 mSDtfsCounter, 1703 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:25,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1782 Valid, 2730 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 14:32:25,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2021-12-22 14:32:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 2666. [2021-12-22 14:32:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 2041 states have (on average 1.4345908868201862) internal successors, (2928), 2054 states have internal predecessors, (2928), 460 states have call successors, (460), 165 states have call predecessors, (460), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2021-12-22 14:32:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3842 transitions. [2021-12-22 14:32:25,138 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3842 transitions. Word has length 28 [2021-12-22 14:32:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:25,139 INFO L470 AbstractCegarLoop]: Abstraction has 2666 states and 3842 transitions. [2021-12-22 14:32:25,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:32:25,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3842 transitions. [2021-12-22 14:32:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 14:32:25,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:25,140 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] [2021-12-22 14:32:25,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:32:25,141 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:25,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash -848421556, now seen corresponding path program 1 times [2021-12-22 14:32:25,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:25,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684271550] [2021-12-22 14:32:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:25,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:32:25,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:25,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684271550] [2021-12-22 14:32:25,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684271550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:25,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:25,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:32:25,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772834332] [2021-12-22 14:32:25,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:25,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:32:25,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:25,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:32:25,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:32:25,219 INFO L87 Difference]: Start difference. First operand 2666 states and 3842 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:32:25,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:25,281 INFO L93 Difference]: Finished difference Result 2668 states and 3843 transitions. [2021-12-22 14:32:25,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:32:25,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-22 14:32:25,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:25,292 INFO L225 Difference]: With dead ends: 2668 [2021-12-22 14:32:25,293 INFO L226 Difference]: Without dead ends: 2665 [2021-12-22 14:32:25,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:32:25,299 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 981 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 999 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 [2021-12-22 14:32:25,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 999 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:32:25,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-12-22 14:32:25,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2665. [2021-12-22 14:32:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2041 states have (on average 1.4341009309162176) internal successors, (2927), 2053 states have internal predecessors, (2927), 459 states have call successors, (459), 165 states have call predecessors, (459), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2021-12-22 14:32:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3840 transitions. [2021-12-22 14:32:25,388 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3840 transitions. Word has length 22 [2021-12-22 14:32:25,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:25,389 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 3840 transitions. [2021-12-22 14:32:25,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:32:25,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3840 transitions. [2021-12-22 14:32:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 14:32:25,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:25,392 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] [2021-12-22 14:32:25,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:32:25,392 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:25,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:25,395 INFO L85 PathProgramCache]: Analyzing trace with hash -531608048, now seen corresponding path program 1 times [2021-12-22 14:32:25,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:25,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936081512] [2021-12-22 14:32:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:25,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:32:25,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:25,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936081512] [2021-12-22 14:32:25,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936081512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:25,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:25,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:32:25,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451600184] [2021-12-22 14:32:25,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:25,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:32:25,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:25,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:32:25,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:32:25,475 INFO L87 Difference]: Start difference. First operand 2665 states and 3840 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:32:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:25,520 INFO L93 Difference]: Finished difference Result 2667 states and 3841 transitions. [2021-12-22 14:32:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:32:25,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-22 14:32:25,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:25,532 INFO L225 Difference]: With dead ends: 2667 [2021-12-22 14:32:25,533 INFO L226 Difference]: Without dead ends: 2664 [2021-12-22 14:32:25,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:32:25,541 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 978 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 997 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 [2021-12-22 14:32:25,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 997 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:32:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-12-22 14:32:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2664. [2021-12-22 14:32:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 2041 states have (on average 1.433610975012249) internal successors, (2926), 2052 states have internal predecessors, (2926), 458 states have call successors, (458), 165 states have call predecessors, (458), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2021-12-22 14:32:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3838 transitions. [2021-12-22 14:32:25,614 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3838 transitions. Word has length 23 [2021-12-22 14:32:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:25,615 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 3838 transitions. [2021-12-22 14:32:25,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:32:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3838 transitions. [2021-12-22 14:32:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 14:32:25,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:25,616 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] [2021-12-22 14:32:25,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:32:25,617 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash 699680975, now seen corresponding path program 1 times [2021-12-22 14:32:25,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:25,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226376855] [2021-12-22 14:32:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:25,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:32:25,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:25,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226376855] [2021-12-22 14:32:25,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226376855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:25,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:25,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:32:25,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647824357] [2021-12-22 14:32:25,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:25,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:32:25,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:25,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:32:25,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:32:25,653 INFO L87 Difference]: Start difference. First operand 2664 states and 3838 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:32:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:25,710 INFO L93 Difference]: Finished difference Result 2666 states and 3839 transitions. [2021-12-22 14:32:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:32:25,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-22 14:32:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:25,720 INFO L225 Difference]: With dead ends: 2666 [2021-12-22 14:32:25,720 INFO L226 Difference]: Without dead ends: 2663 [2021-12-22 14:32:25,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:32:25,721 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 975 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 995 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 [2021-12-22 14:32:25,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 995 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:32:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-12-22 14:32:25,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2021-12-22 14:32:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2041 states have (on average 1.4331210191082802) internal successors, (2925), 2051 states have internal predecessors, (2925), 457 states have call successors, (457), 165 states have call predecessors, (457), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2021-12-22 14:32:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3836 transitions. [2021-12-22 14:32:25,786 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3836 transitions. Word has length 24 [2021-12-22 14:32:25,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:25,787 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3836 transitions. [2021-12-22 14:32:25,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:32:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3836 transitions. [2021-12-22 14:32:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 14:32:25,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:25,788 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] [2021-12-22 14:32:25,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:32:25,789 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:25,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash 876720022, now seen corresponding path program 1 times [2021-12-22 14:32:25,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:25,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928135645] [2021-12-22 14:32:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:25,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:25,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:32:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:32:25,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:25,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928135645] [2021-12-22 14:32:25,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928135645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:25,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:25,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:32:25,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937300880] [2021-12-22 14:32:25,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:25,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:32:25,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:25,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:32:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:32:25,832 INFO L87 Difference]: Start difference. First operand 2663 states and 3836 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:32:26,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:26,728 INFO L93 Difference]: Finished difference Result 9271 states and 13570 transitions. [2021-12-22 14:32:26,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:32:26,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-12-22 14:32:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:26,756 INFO L225 Difference]: With dead ends: 9271 [2021-12-22 14:32:26,756 INFO L226 Difference]: Without dead ends: 6611 [2021-12-22 14:32:26,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:32:26,768 INFO L933 BasicCegarLoop]: 1282 mSDtfsCounter, 1656 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:26,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1738 Valid, 2861 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 14:32:26,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6611 states. [2021-12-22 14:32:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6611 to 5207. [2021-12-22 14:32:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 3995 states have (on average 1.4315394242803505) internal successors, (5719), 4013 states have internal predecessors, (5719), 883 states have call successors, (883), 329 states have call predecessors, (883), 328 states have return successors, (880), 880 states have call predecessors, (880), 880 states have call successors, (880) [2021-12-22 14:32:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 7482 transitions. [2021-12-22 14:32:26,992 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 7482 transitions. Word has length 30 [2021-12-22 14:32:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:26,992 INFO L470 AbstractCegarLoop]: Abstraction has 5207 states and 7482 transitions. [2021-12-22 14:32:26,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:32:26,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 7482 transitions. [2021-12-22 14:32:26,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 14:32:26,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:26,996 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] [2021-12-22 14:32:26,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:32:26,996 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:26,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash 214939891, now seen corresponding path program 1 times [2021-12-22 14:32:26,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:26,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502653597] [2021-12-22 14:32:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:26,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:32:27,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:27,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502653597] [2021-12-22 14:32:27,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502653597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:27,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:27,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:32:27,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644379148] [2021-12-22 14:32:27,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:27,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:32:27,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:32:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:32:27,044 INFO L87 Difference]: Start difference. First operand 5207 states and 7482 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:32:27,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:27,228 INFO L93 Difference]: Finished difference Result 11493 states and 16556 transitions. [2021-12-22 14:32:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:32:27,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-22 14:32:27,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:27,251 INFO L225 Difference]: With dead ends: 11493 [2021-12-22 14:32:27,251 INFO L226 Difference]: Without dead ends: 6282 [2021-12-22 14:32:27,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:32:27,267 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 923 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:27,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 1511 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:32:27,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-12-22 14:32:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6252. [2021-12-22 14:32:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 4789 states have (on average 1.418458968469409) internal successors, (6793), 4818 states have internal predecessors, (6793), 1044 states have call successors, (1044), 432 states have call predecessors, (1044), 418 states have return successors, (1064), 1025 states have call predecessors, (1064), 1040 states have call successors, (1064) [2021-12-22 14:32:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 8901 transitions. [2021-12-22 14:32:27,451 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 8901 transitions. Word has length 25 [2021-12-22 14:32:27,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:27,452 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 8901 transitions. [2021-12-22 14:32:27,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:32:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 8901 transitions. [2021-12-22 14:32:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-22 14:32:27,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:27,458 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:32:27,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:32:27,458 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:27,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:27,459 INFO L85 PathProgramCache]: Analyzing trace with hash 705413493, now seen corresponding path program 1 times [2021-12-22 14:32:27,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:27,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144846438] [2021-12-22 14:32:27,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:27,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 14:32:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:32:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:27,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:32:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:32:27,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:27,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144846438] [2021-12-22 14:32:27,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144846438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:27,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:27,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:32:27,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308401160] [2021-12-22 14:32:27,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:27,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:32:27,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:27,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:32:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:32:27,577 INFO L87 Difference]: Start difference. First operand 6252 states and 8901 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 14:32:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:29,150 INFO L93 Difference]: Finished difference Result 9814 states and 14385 transitions. [2021-12-22 14:32:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:32:29,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2021-12-22 14:32:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:29,201 INFO L225 Difference]: With dead ends: 9814 [2021-12-22 14:32:29,201 INFO L226 Difference]: Without dead ends: 8774 [2021-12-22 14:32:29,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:32:29,208 INFO L933 BasicCegarLoop]: 1223 mSDtfsCounter, 1496 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:29,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 2649 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 14:32:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8774 states. [2021-12-22 14:32:29,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8774 to 6232. [2021-12-22 14:32:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 4776 states have (on average 1.4170854271356783) internal successors, (6768), 4808 states have internal predecessors, (6768), 1037 states have call successors, (1037), 429 states have call predecessors, (1037), 418 states have return successors, (1024), 1018 states have call predecessors, (1024), 1024 states have call successors, (1024) [2021-12-22 14:32:29,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 8829 transitions. [2021-12-22 14:32:29,467 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 8829 transitions. Word has length 57 [2021-12-22 14:32:29,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:29,468 INFO L470 AbstractCegarLoop]: Abstraction has 6232 states and 8829 transitions. [2021-12-22 14:32:29,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 14:32:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 8829 transitions. [2021-12-22 14:32:29,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-22 14:32:29,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:29,482 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:32:29,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:32:29,483 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:29,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1346697186, now seen corresponding path program 1 times [2021-12-22 14:32:29,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:29,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829785654] [2021-12-22 14:32:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:29,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:32:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:32:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 14:32:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-22 14:32:29,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:29,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829785654] [2021-12-22 14:32:29,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829785654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:29,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:29,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:32:29,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755870625] [2021-12-22 14:32:29,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:29,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:32:29,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:29,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:32:29,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:32:29,729 INFO L87 Difference]: Start difference. First operand 6232 states and 8829 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:32:31,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:31,813 INFO L93 Difference]: Finished difference Result 23926 states and 34961 transitions. [2021-12-22 14:32:31,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:32:31,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2021-12-22 14:32:31,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:31,944 INFO L225 Difference]: With dead ends: 23926 [2021-12-22 14:32:31,944 INFO L226 Difference]: Without dead ends: 17697 [2021-12-22 14:32:31,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:32:31,970 INFO L933 BasicCegarLoop]: 1264 mSDtfsCounter, 1799 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:31,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1894 Valid, 3318 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 14:32:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17697 states. [2021-12-22 14:32:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17697 to 12272. [2021-12-22 14:32:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12272 states, 9406 states have (on average 1.4133531788220286) internal successors, (13294), 9470 states have internal predecessors, (13294), 2029 states have call successors, (2029), 855 states have call predecessors, (2029), 836 states have return successors, (2008), 1994 states have call predecessors, (2008), 2008 states have call successors, (2008) [2021-12-22 14:32:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12272 states to 12272 states and 17331 transitions. [2021-12-22 14:32:32,493 INFO L78 Accepts]: Start accepts. Automaton has 12272 states and 17331 transitions. Word has length 124 [2021-12-22 14:32:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:32,495 INFO L470 AbstractCegarLoop]: Abstraction has 12272 states and 17331 transitions. [2021-12-22 14:32:32,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:32:32,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12272 states and 17331 transitions. [2021-12-22 14:32:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-22 14:32:32,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:32,546 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:32:32,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:32:32,546 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:32,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:32,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2081257639, now seen corresponding path program 1 times [2021-12-22 14:32:32,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:32,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307965590] [2021-12-22 14:32:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:32,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:32:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:32:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 14:32:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-22 14:32:32,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:32,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307965590] [2021-12-22 14:32:32,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307965590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:32,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:32,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:32:32,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544778705] [2021-12-22 14:32:32,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:32,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:32:32,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:32,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:32:32,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:32:32,705 INFO L87 Difference]: Start difference. First operand 12272 states and 17331 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:32:35,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:35,187 INFO L93 Difference]: Finished difference Result 42274 states and 61523 transitions. [2021-12-22 14:32:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:32:35,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 127 [2021-12-22 14:32:35,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:35,295 INFO L225 Difference]: With dead ends: 42274 [2021-12-22 14:32:35,296 INFO L226 Difference]: Without dead ends: 30005 [2021-12-22 14:32:35,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:32:35,332 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1813 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:35,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1910 Valid, 3618 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 14:32:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30005 states. [2021-12-22 14:32:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30005 to 20916. [2021-12-22 14:32:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20916 states, 16030 states have (on average 1.4122270742358078) internal successors, (22638), 16142 states have internal predecessors, (22638), 3449 states have call successors, (3449), 1471 states have call predecessors, (3449), 1436 states have return successors, (3412), 3382 states have call predecessors, (3412), 3412 states have call successors, (3412) [2021-12-22 14:32:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20916 states to 20916 states and 29499 transitions. [2021-12-22 14:32:36,265 INFO L78 Accepts]: Start accepts. Automaton has 20916 states and 29499 transitions. Word has length 127 [2021-12-22 14:32:36,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:36,266 INFO L470 AbstractCegarLoop]: Abstraction has 20916 states and 29499 transitions. [2021-12-22 14:32:36,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:32:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand 20916 states and 29499 transitions. [2021-12-22 14:32:36,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-22 14:32:36,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:36,312 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:32:36,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 14:32:36,312 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:36,313 INFO L85 PathProgramCache]: Analyzing trace with hash -284839104, now seen corresponding path program 1 times [2021-12-22 14:32:36,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:36,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393844843] [2021-12-22 14:32:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:36,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:32:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:32:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:32:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-22 14:32:36,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:36,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393844843] [2021-12-22 14:32:36,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393844843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:36,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:36,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:32:36,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678787257] [2021-12-22 14:32:36,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:36,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:32:36,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:36,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:32:36,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:32:36,477 INFO L87 Difference]: Start difference. First operand 20916 states and 29499 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:32:38,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:38,198 INFO L93 Difference]: Finished difference Result 50925 states and 73739 transitions. [2021-12-22 14:32:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:32:38,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 141 [2021-12-22 14:32:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:38,327 INFO L225 Difference]: With dead ends: 50925 [2021-12-22 14:32:38,328 INFO L226 Difference]: Without dead ends: 30012 [2021-12-22 14:32:38,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:32:38,382 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 706 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:38,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 2489 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 14:32:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30012 states. [2021-12-22 14:32:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30012 to 20940. [2021-12-22 14:32:39,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20940 states, 16054 states have (on average 1.4116108135044225) internal successors, (22662), 16166 states have internal predecessors, (22662), 3449 states have call successors, (3449), 1471 states have call predecessors, (3449), 1436 states have return successors, (3412), 3382 states have call predecessors, (3412), 3412 states have call successors, (3412) [2021-12-22 14:32:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20940 states to 20940 states and 29523 transitions. [2021-12-22 14:32:39,508 INFO L78 Accepts]: Start accepts. Automaton has 20940 states and 29523 transitions. Word has length 141 [2021-12-22 14:32:39,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:39,508 INFO L470 AbstractCegarLoop]: Abstraction has 20940 states and 29523 transitions. [2021-12-22 14:32:39,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:32:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 20940 states and 29523 transitions. [2021-12-22 14:32:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-22 14:32:39,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:39,554 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:32:39,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 14:32:39,554 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:39,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:39,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1323423678, now seen corresponding path program 1 times [2021-12-22 14:32:39,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:39,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857407918] [2021-12-22 14:32:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:39,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:32:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:32:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:32:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-22 14:32:39,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:39,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857407918] [2021-12-22 14:32:39,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857407918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:39,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:39,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:32:39,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677532556] [2021-12-22 14:32:39,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:39,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:32:39,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:39,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:32:39,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:32:39,827 INFO L87 Difference]: Start difference. First operand 20940 states and 29523 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:32:42,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:42,056 INFO L93 Difference]: Finished difference Result 51509 states and 74963 transitions. [2021-12-22 14:32:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:32:42,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 141 [2021-12-22 14:32:42,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:42,164 INFO L225 Difference]: With dead ends: 51509 [2021-12-22 14:32:42,164 INFO L226 Difference]: Without dead ends: 30572 [2021-12-22 14:32:42,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:32:42,210 INFO L933 BasicCegarLoop]: 970 mSDtfsCounter, 446 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:42,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 2820 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 14:32:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30572 states. [2021-12-22 14:32:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30572 to 21020. [2021-12-22 14:32:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21020 states, 16134 states have (on average 1.4120490888806247) internal successors, (22782), 16246 states have internal predecessors, (22782), 3449 states have call successors, (3449), 1471 states have call predecessors, (3449), 1436 states have return successors, (3412), 3382 states have call predecessors, (3412), 3412 states have call successors, (3412) [2021-12-22 14:32:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21020 states to 21020 states and 29643 transitions. [2021-12-22 14:32:43,142 INFO L78 Accepts]: Start accepts. Automaton has 21020 states and 29643 transitions. Word has length 141 [2021-12-22 14:32:43,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:43,143 INFO L470 AbstractCegarLoop]: Abstraction has 21020 states and 29643 transitions. [2021-12-22 14:32:43,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:32:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 21020 states and 29643 transitions. [2021-12-22 14:32:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-22 14:32:43,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:43,174 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:32:43,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 14:32:43,174 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash 446961682, now seen corresponding path program 1 times [2021-12-22 14:32:43,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:43,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896936851] [2021-12-22 14:32:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:43,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 14:32:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:32:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-22 14:32:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 14:32:43,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:43,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896936851] [2021-12-22 14:32:43,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896936851] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:32:43,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947570559] [2021-12-22 14:32:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:43,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:32:43,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:32:43,506 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) [2021-12-22 14:32:43,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:32:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:43,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-22 14:32:43,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:32:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-22 14:32:44,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:32:44,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947570559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:44,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:32:44,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-22 14:32:44,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473974471] [2021-12-22 14:32:44,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:44,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:32:44,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:32:44,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-12-22 14:32:44,275 INFO L87 Difference]: Start difference. First operand 21020 states and 29643 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:32:45,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:45,226 INFO L93 Difference]: Finished difference Result 44701 states and 63803 transitions. [2021-12-22 14:32:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:32:45,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 143 [2021-12-22 14:32:45,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:45,297 INFO L225 Difference]: With dead ends: 44701 [2021-12-22 14:32:45,297 INFO L226 Difference]: Without dead ends: 23684 [2021-12-22 14:32:45,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-12-22 14:32:45,340 INFO L933 BasicCegarLoop]: 1038 mSDtfsCounter, 149 mSDsluCounter, 5091 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 6129 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:45,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 6129 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:32:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23684 states. [2021-12-22 14:32:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23684 to 22844. [2021-12-22 14:32:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22844 states, 17542 states have (on average 1.4077072169649982) internal successors, (24694), 17654 states have internal predecessors, (24694), 3777 states have call successors, (3777), 1559 states have call predecessors, (3777), 1524 states have return successors, (3820), 3710 states have call predecessors, (3820), 3740 states have call successors, (3820) [2021-12-22 14:32:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22844 states to 22844 states and 32291 transitions. [2021-12-22 14:32:46,295 INFO L78 Accepts]: Start accepts. Automaton has 22844 states and 32291 transitions. Word has length 143 [2021-12-22 14:32:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:46,296 INFO L470 AbstractCegarLoop]: Abstraction has 22844 states and 32291 transitions. [2021-12-22 14:32:46,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:32:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 22844 states and 32291 transitions. [2021-12-22 14:32:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-22 14:32:46,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:46,332 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:32:46,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 14:32:46,559 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,SelfDestructingSolverStorable12 [2021-12-22 14:32:46,560 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1652804509, now seen corresponding path program 1 times [2021-12-22 14:32:46,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:46,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140736566] [2021-12-22 14:32:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:46,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:46,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:32:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:46,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:46,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:46,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:46,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 14:32:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:47,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:47,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:47,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:47,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 14:32:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 14:32:47,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:47,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140736566] [2021-12-22 14:32:47,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140736566] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:32:47,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572132829] [2021-12-22 14:32:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:47,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:32:47,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:32:47,028 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) [2021-12-22 14:32:47,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:32:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:47,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-22 14:32:47,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:32:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 14:32:47,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:32:47,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572132829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:47,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:32:47,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2021-12-22 14:32:47,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528256949] [2021-12-22 14:32:47,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:47,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-22 14:32:47,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:47,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-22 14:32:47,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=747, Unknown=0, NotChecked=0, Total=812 [2021-12-22 14:32:47,984 INFO L87 Difference]: Start difference. First operand 22844 states and 32291 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 13 states have internal predecessors, (98), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-22 14:32:49,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:49,140 INFO L93 Difference]: Finished difference Result 47365 states and 67787 transitions. [2021-12-22 14:32:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-22 14:32:49,141 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 13 states have internal predecessors, (98), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 140 [2021-12-22 14:32:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:49,235 INFO L225 Difference]: With dead ends: 47365 [2021-12-22 14:32:49,235 INFO L226 Difference]: Without dead ends: 24524 [2021-12-22 14:32:49,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2021-12-22 14:32:49,313 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 1253 mSDsluCounter, 15453 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 16422 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:49,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 16422 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 14:32:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24524 states. [2021-12-22 14:32:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24524 to 24076. [2021-12-22 14:32:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24076 states, 18390 states have (on average 1.399347471451876) internal successors, (25734), 18502 states have internal predecessors, (25734), 4017 states have call successors, (4017), 1583 states have call predecessors, (4017), 1668 states have return successors, (4452), 4070 states have call predecessors, (4452), 3980 states have call successors, (4452) [2021-12-22 14:32:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24076 states to 24076 states and 34203 transitions. [2021-12-22 14:32:50,358 INFO L78 Accepts]: Start accepts. Automaton has 24076 states and 34203 transitions. Word has length 140 [2021-12-22 14:32:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:50,358 INFO L470 AbstractCegarLoop]: Abstraction has 24076 states and 34203 transitions. [2021-12-22 14:32:50,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 13 states have internal predecessors, (98), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-22 14:32:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 24076 states and 34203 transitions. [2021-12-22 14:32:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-22 14:32:50,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:50,395 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, 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] [2021-12-22 14:32:50,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-22 14:32:50,611 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,SelfDestructingSolverStorable13 [2021-12-22 14:32:50,612 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1463893165, now seen corresponding path program 1 times [2021-12-22 14:32:50,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:50,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061025051] [2021-12-22 14:32:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:50,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:32:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:32:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 14:32:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-22 14:32:50,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:50,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061025051] [2021-12-22 14:32:50,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061025051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:50,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:50,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:32:50,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759486047] [2021-12-22 14:32:50,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:50,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:32:50,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:50,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:32:50,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:32:50,922 INFO L87 Difference]: Start difference. First operand 24076 states and 34203 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-22 14:32:53,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:53,879 INFO L93 Difference]: Finished difference Result 57005 states and 83427 transitions. [2021-12-22 14:32:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:32:53,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 146 [2021-12-22 14:32:53,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:54,003 INFO L225 Difference]: With dead ends: 57005 [2021-12-22 14:32:54,004 INFO L226 Difference]: Without dead ends: 32932 [2021-12-22 14:32:54,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:32:54,074 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 403 mSDsluCounter, 5994 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 6927 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:54,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 6927 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 14:32:54,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32932 states. [2021-12-22 14:32:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32932 to 24316. [2021-12-22 14:32:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24316 states, 18590 states have (on average 1.3950511027434105) internal successors, (25934), 18662 states have internal predecessors, (25934), 4017 states have call successors, (4017), 1583 states have call predecessors, (4017), 1708 states have return successors, (4532), 4150 states have call predecessors, (4532), 3980 states have call successors, (4532) [2021-12-22 14:32:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24316 states to 24316 states and 34483 transitions. [2021-12-22 14:32:55,247 INFO L78 Accepts]: Start accepts. Automaton has 24316 states and 34483 transitions. Word has length 146 [2021-12-22 14:32:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:55,247 INFO L470 AbstractCegarLoop]: Abstraction has 24316 states and 34483 transitions. [2021-12-22 14:32:55,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-22 14:32:55,248 INFO L276 IsEmpty]: Start isEmpty. Operand 24316 states and 34483 transitions. [2021-12-22 14:32:55,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-22 14:32:55,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:55,284 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:32:55,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 14:32:55,284 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:55,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1966918471, now seen corresponding path program 1 times [2021-12-22 14:32:55,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:55,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816276847] [2021-12-22 14:32:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:55,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:32:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:32:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 14:32:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-22 14:32:55,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:55,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816276847] [2021-12-22 14:32:55,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816276847] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:32:55,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321565636] [2021-12-22 14:32:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:55,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:32:55,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:32:55,550 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) [2021-12-22 14:32:55,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 14:32:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:56,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-22 14:32:56,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:32:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 14:32:56,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:32:56,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321565636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:56,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:32:56,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [8] total 21 [2021-12-22 14:32:56,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404767903] [2021-12-22 14:32:56,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:56,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 14:32:56,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 14:32:56,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-12-22 14:32:56,416 INFO L87 Difference]: Start difference. First operand 24316 states and 34483 transitions. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 11 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 14:32:57,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:57,580 INFO L93 Difference]: Finished difference Result 49461 states and 70811 transitions. [2021-12-22 14:32:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 14:32:57,581 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 11 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) Word has length 149 [2021-12-22 14:32:57,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:57,673 INFO L225 Difference]: With dead ends: 49461 [2021-12-22 14:32:57,673 INFO L226 Difference]: Without dead ends: 25148 [2021-12-22 14:32:57,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2021-12-22 14:32:57,739 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 24 mSDsluCounter, 13029 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 14035 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:57,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 14035 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:32:57,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25148 states. [2021-12-22 14:32:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25148 to 24516. [2021-12-22 14:32:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24516 states, 18750 states have (on average 1.39168) internal successors, (26094), 18822 states have internal predecessors, (26094), 4017 states have call successors, (4017), 1583 states have call predecessors, (4017), 1748 states have return successors, (4620), 4190 states have call predecessors, (4620), 3980 states have call successors, (4620) [2021-12-22 14:32:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24516 states to 24516 states and 34731 transitions. [2021-12-22 14:32:58,793 INFO L78 Accepts]: Start accepts. Automaton has 24516 states and 34731 transitions. Word has length 149 [2021-12-22 14:32:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:58,793 INFO L470 AbstractCegarLoop]: Abstraction has 24516 states and 34731 transitions. [2021-12-22 14:32:58,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 11 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 14:32:58,794 INFO L276 IsEmpty]: Start isEmpty. Operand 24516 states and 34731 transitions. [2021-12-22 14:32:58,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-22 14:32:58,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:58,826 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, 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] [2021-12-22 14:32:58,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 14:32:59,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:32:59,047 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:59,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:59,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1998476603, now seen corresponding path program 1 times [2021-12-22 14:32:59,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:59,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160440638] [2021-12-22 14:32:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:59,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:32:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 14:32:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:32:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 14:32:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 14:32:59,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:59,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160440638] [2021-12-22 14:32:59,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160440638] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:32:59,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020490875] [2021-12-22 14:32:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:59,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:32:59,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:32:59,458 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) [2021-12-22 14:32:59,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 14:32:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:59,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-22 14:32:59,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:33:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 14:33:00,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:33:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 14:33:01,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020490875] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:33:01,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:33:01,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 35 [2021-12-22 14:33:01,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232604364] [2021-12-22 14:33:01,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:33:01,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-22 14:33:01,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:01,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-22 14:33:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-12-22 14:33:01,284 INFO L87 Difference]: Start difference. First operand 24516 states and 34731 transitions. Second operand has 35 states, 35 states have (on average 4.114285714285714) internal successors, (144), 22 states have internal predecessors, (144), 4 states have call successors, (25), 4 states have call predecessors, (25), 12 states have return successors, (22), 15 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-22 14:33:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:06,709 INFO L93 Difference]: Finished difference Result 68285 states and 106907 transitions. [2021-12-22 14:33:06,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-22 14:33:06,710 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.114285714285714) internal successors, (144), 22 states have internal predecessors, (144), 4 states have call successors, (25), 4 states have call predecessors, (25), 12 states have return successors, (22), 15 states have call predecessors, (22), 4 states have call successors, (22) Word has length 143 [2021-12-22 14:33:06,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:06,868 INFO L225 Difference]: With dead ends: 68285 [2021-12-22 14:33:06,868 INFO L226 Difference]: Without dead ends: 43772 [2021-12-22 14:33:06,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=2764, Unknown=0, NotChecked=0, Total=2970 [2021-12-22 14:33:06,931 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 827 mSDsluCounter, 23008 mSDsCounter, 0 mSdLazyCounter, 5804 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 24039 SdHoareTripleChecker+Invalid, 6238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:06,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 24039 Invalid, 6238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5804 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-22 14:33:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43772 states. [2021-12-22 14:33:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43772 to 25308. [2021-12-22 14:33:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25308 states, 19334 states have (on average 1.3777800765490844) internal successors, (26638), 19398 states have internal predecessors, (26638), 4105 states have call successors, (4105), 1583 states have call predecessors, (4105), 1868 states have return successors, (5324), 4406 states have call predecessors, (5324), 4068 states have call successors, (5324) [2021-12-22 14:33:08,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25308 states to 25308 states and 36067 transitions. [2021-12-22 14:33:08,319 INFO L78 Accepts]: Start accepts. Automaton has 25308 states and 36067 transitions. Word has length 143 [2021-12-22 14:33:08,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:08,319 INFO L470 AbstractCegarLoop]: Abstraction has 25308 states and 36067 transitions. [2021-12-22 14:33:08,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.114285714285714) internal successors, (144), 22 states have internal predecessors, (144), 4 states have call successors, (25), 4 states have call predecessors, (25), 12 states have return successors, (22), 15 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-22 14:33:08,320 INFO L276 IsEmpty]: Start isEmpty. Operand 25308 states and 36067 transitions. [2021-12-22 14:33:08,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-22 14:33:08,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:08,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:08,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-22 14:33:08,565 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,SelfDestructingSolverStorable16 [2021-12-22 14:33:08,566 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:08,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1736427951, now seen corresponding path program 1 times [2021-12-22 14:33:08,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:08,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38659185] [2021-12-22 14:33:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:08,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:33:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:33:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 14:33:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:33:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 14:33:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-22 14:33:08,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:08,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38659185] [2021-12-22 14:33:08,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38659185] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:33:08,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645326061] [2021-12-22 14:33:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:08,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:33:08,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:33:08,975 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) [2021-12-22 14:33:08,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 14:33:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:09,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-22 14:33:09,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:33:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-22 14:33:09,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:33:09,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645326061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:09,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:33:09,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 19 [2021-12-22 14:33:09,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635101627] [2021-12-22 14:33:09,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:09,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 14:33:09,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:09,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 14:33:09,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-12-22 14:33:09,816 INFO L87 Difference]: Start difference. First operand 25308 states and 36067 transitions. Second operand has 14 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-22 14:33:11,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:11,266 INFO L93 Difference]: Finished difference Result 51437 states and 73835 transitions. [2021-12-22 14:33:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 14:33:11,267 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 154 [2021-12-22 14:33:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:11,380 INFO L225 Difference]: With dead ends: 51437 [2021-12-22 14:33:11,380 INFO L226 Difference]: Without dead ends: 26132 [2021-12-22 14:33:11,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2021-12-22 14:33:11,456 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 1260 mSDsluCounter, 10648 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 11625 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:11,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1264 Valid, 11625 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:33:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26132 states. [2021-12-22 14:33:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26132 to 25644. [2021-12-22 14:33:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25644 states, 19574 states have (on average 1.3768264023704915) internal successors, (26950), 19686 states have internal predecessors, (26950), 4153 states have call successors, (4153), 1583 states have call predecessors, (4153), 1916 states have return successors, (5516), 4454 states have call predecessors, (5516), 4116 states have call successors, (5516) [2021-12-22 14:33:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25644 states to 25644 states and 36619 transitions. [2021-12-22 14:33:12,795 INFO L78 Accepts]: Start accepts. Automaton has 25644 states and 36619 transitions. Word has length 154 [2021-12-22 14:33:12,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:12,796 INFO L470 AbstractCegarLoop]: Abstraction has 25644 states and 36619 transitions. [2021-12-22 14:33:12,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-22 14:33:12,796 INFO L276 IsEmpty]: Start isEmpty. Operand 25644 states and 36619 transitions. [2021-12-22 14:33:12,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-22 14:33:12,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:12,835 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:12,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 14:33:13,037 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,SelfDestructingSolverStorable17 [2021-12-22 14:33:13,038 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:13,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:13,038 INFO L85 PathProgramCache]: Analyzing trace with hash 647496787, now seen corresponding path program 1 times [2021-12-22 14:33:13,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:13,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314341417] [2021-12-22 14:33:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:13,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:33:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:33:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 14:33:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:33:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 14:33:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:33:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-22 14:33:13,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:13,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314341417] [2021-12-22 14:33:13,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314341417] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:33:13,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652547785] [2021-12-22 14:33:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:13,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:33:13,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:33:13,574 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) [2021-12-22 14:33:13,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 14:33:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:14,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-22 14:33:14,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:33:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 14:33:14,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:33:14,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652547785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:14,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:33:14,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [20] total 23 [2021-12-22 14:33:14,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488484237] [2021-12-22 14:33:14,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:14,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-22 14:33:14,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-22 14:33:14,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2021-12-22 14:33:14,563 INFO L87 Difference]: Start difference. First operand 25644 states and 36619 transitions. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 13 states have internal predecessors, (112), 2 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (12), 7 states have call predecessors, (12), 2 states have call successors, (12)