./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 ae007674 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-ae00767 [2021-12-28 03:50:27,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:50:27,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:50:27,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:50:27,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:50:27,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:50:27,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:50:27,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:50:27,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:50:27,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:50:27,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:50:27,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:50:27,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:50:27,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:50:27,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:50:27,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:50:27,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:50:27,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:50:27,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:50:27,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:50:27,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:50:27,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:50:27,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:50:27,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:50:27,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:50:27,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:50:27,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:50:27,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:50:27,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:50:27,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:50:27,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:50:27,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:50:27,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:50:27,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:50:27,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:50:27,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:50:27,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:50:27,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:50:27,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:50:27,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:50:27,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:50:27,558 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:50:27,590 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:50:27,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:50:27,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:50:27,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:50:27,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:50:27,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:50:27,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:50:27,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:50:27,595 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:50:27,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:50:27,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:50:27,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:50:27,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:50:27,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:50:27,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:50:27,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:50:27,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:50:27,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:50:27,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:50:27,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:50:27,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:50:27,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:50:27,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:50:27,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:50:27,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:50:27,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:50:27,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:50:27,599 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:50:27,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:50:27,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:50:27,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf300fda993e6da191f561c0f8e677f22a7de271b61b51439ca8ec3e0ecdedef [2021-12-28 03:50:27,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:50:27,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:50:27,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:50:27,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:50:27,863 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:50:27,864 INFO L432 ainManager$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 [2021-12-28 03:50:27,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98e3817b/4e3b8495cf8f4650b664615f40073d18/FLAG790c11696 [2021-12-28 03:50:28,472 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:50:28,472 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 [2021-12-28 03:50:28,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98e3817b/4e3b8495cf8f4650b664615f40073d18/FLAG790c11696 [2021-12-28 03:50:28,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98e3817b/4e3b8495cf8f4650b664615f40073d18 [2021-12-28 03:50:28,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:50:28,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:50:28,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:50:28,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:50:28,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:50:28,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:50:28" (1/1) ... [2021-12-28 03:50:28,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bdcf7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:28, skipping insertion in model container [2021-12-28 03:50:28,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:50:28" (1/1) ... [2021-12-28 03:50:28,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:50:29,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:50:29,671 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] [2021-12-28 03:50:29,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:50:29,734 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:50:29,908 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] [2021-12-28 03:50:29,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:50:29,973 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:50:29,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29 WrapperNode [2021-12-28 03:50:29,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:50:29,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:50:29,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:50:29,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:50:29,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (1/1) ... [2021-12-28 03:50:30,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (1/1) ... [2021-12-28 03:50:30,124 INFO L137 Inliner]: procedures = 152, calls = 622, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 1714 [2021-12-28 03:50:30,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:50:30,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:50:30,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:50:30,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:50:30,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (1/1) ... [2021-12-28 03:50:30,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (1/1) ... [2021-12-28 03:50:30,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (1/1) ... [2021-12-28 03:50:30,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (1/1) ... [2021-12-28 03:50:30,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (1/1) ... [2021-12-28 03:50:30,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (1/1) ... [2021-12-28 03:50:30,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (1/1) ... [2021-12-28 03:50:30,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:50:30,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:50:30,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:50:30,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:50:30,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (1/1) ... [2021-12-28 03:50:30,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:50:30,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:50:30,293 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) [2021-12-28 03:50:30,325 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 [2021-12-28 03:50:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-28 03:50:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-28 03:50:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_alloc_resource [2021-12-28 03:50:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_alloc_resource [2021-12-28 03:50:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure add_interval [2021-12-28 03:50:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure add_interval [2021-12-28 03:50:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:50:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure sub_interval [2021-12-28 03:50:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure sub_interval [2021-12-28 03:50:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:50:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:50:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_mem_region [2021-12-28 03:50:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_mem_region [2021-12-28 03:50:30,349 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:50:30,349 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:50:30,349 INFO L130 BoogieDeclarations]: Found specification of procedure free_region [2021-12-28 03:50:30,349 INFO L138 BoogieDeclarations]: Found implementation of procedure free_region [2021-12-28 03:50:30,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:50:30,349 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:50:30,349 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:50:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure __nonstatic_adjust_io_region [2021-12-28 03:50:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __nonstatic_adjust_io_region [2021-12-28 03:50:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:50:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:50:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:50:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:50:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_release_resource_db [2021-12-28 03:50:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_release_resource_db [2021-12-28 03:50:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure do_mem_probe [2021-12-28 03:50:30,351 INFO L138 BoogieDeclarations]: Found implementation of procedure do_mem_probe [2021-12-28 03:50:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_make_resource [2021-12-28 03:50:30,351 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_make_resource [2021-12-28 03:50:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:50:30,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:50:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_init [2021-12-28 03:50:30,351 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_init [2021-12-28 03:50:30,352 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_io [2021-12-28 03:50:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_io [2021-12-28 03:50:30,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:50:30,352 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:50:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:50:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure pccard_sysfs_add_rsrc [2021-12-28 03:50:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure pccard_sysfs_add_rsrc [2021-12-28 03:50:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:50:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure static_init [2021-12-28 03:50:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure static_init [2021-12-28 03:50:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:50:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:50:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure do_validate_mem [2021-12-28 03:50:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure do_validate_mem [2021-12-28 03:50:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_resource [2021-12-28 03:50:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_resource [2021-12-28 03:50:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_nonstatic_validate_mem [2021-12-28 03:50:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_nonstatic_validate_mem [2021-12-28 03:50:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:50:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure static_find_io [2021-12-28 03:50:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure static_find_io [2021-12-28 03:50:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-12-28 03:50:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-12-28 03:50:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure show_mem_db [2021-12-28 03:50:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure show_mem_db [2021-12-28 03:50:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_io [2021-12-28 03:50:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_io [2021-12-28 03:50:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:50:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-28 03:50:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-28 03:50:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:50:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 03:50:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 03:50:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:50:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:50:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:50:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:50:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-28 03:50:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-28 03:50:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:50:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2021-12-28 03:50:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2021-12-28 03:50:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_6 [2021-12-28 03:50:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_6 [2021-12-28 03:50:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_memory [2021-12-28 03:50:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_memory [2021-12-28 03:50:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_resource [2021-12-28 03:50:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_resource [2021-12-28 03:50:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_7 [2021-12-28 03:50:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_7 [2021-12-28 03:50:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:50:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:50:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2021-12-28 03:50:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2021-12-28 03:50:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure claim_region [2021-12-28 03:50:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure claim_region [2021-12-28 03:50:30,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2021-12-28 03:50:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2021-12-28 03:50:30,362 INFO L130 BoogieDeclarations]: Found specification of procedure show_io_db [2021-12-28 03:50:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure show_io_db [2021-12-28 03:50:30,697 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:50:30,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:50:31,781 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:50:31,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:50:31,789 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:50:31,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:50:31 BoogieIcfgContainer [2021-12-28 03:50:31,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:50:31,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:50:31,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:50:31,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:50:31,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:50:28" (1/3) ... [2021-12-28 03:50:31,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8689000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:50:31, skipping insertion in model container [2021-12-28 03:50:31,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:50:29" (2/3) ... [2021-12-28 03:50:31,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8689000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:50:31, skipping insertion in model container [2021-12-28 03:50:31,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:50:31" (3/3) ... [2021-12-28 03:50:31,795 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2021-12-28 03:50:31,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:50:31,799 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:50:31,827 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:50:31,832 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 [2021-12-28 03:50:31,832 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:50:31,853 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) [2021-12-28 03:50:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-28 03:50:31,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:31,861 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] [2021-12-28 03:50:31,861 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:31,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:31,865 INFO L85 PathProgramCache]: Analyzing trace with hash -404759991, now seen corresponding path program 1 times [2021-12-28 03:50:31,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:31,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864575394] [2021-12-28 03:50:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:31,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:50:32,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:32,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864575394] [2021-12-28 03:50:32,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864575394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:32,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:32,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:50:32,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832190561] [2021-12-28 03:50:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:32,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:50:32,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:32,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:50:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:50:32,229 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) [2021-12-28 03:50:32,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:32,428 INFO L93 Difference]: Finished difference Result 2074 states and 3141 transitions. [2021-12-28 03:50:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:50:32,430 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 [2021-12-28 03:50:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:32,450 INFO L225 Difference]: With dead ends: 2074 [2021-12-28 03:50:32,450 INFO L226 Difference]: Without dead ends: 1372 [2021-12-28 03:50:32,458 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 [2021-12-28 03:50:32,460 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 [2021-12-28 03:50:32,461 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] [2021-12-28 03:50:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-12-28 03:50:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1368. [2021-12-28 03:50:32,581 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) [2021-12-28 03:50:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1975 transitions. [2021-12-28 03:50:32,596 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1975 transitions. Word has length 20 [2021-12-28 03:50:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:32,596 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 1975 transitions. [2021-12-28 03:50:32,597 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) [2021-12-28 03:50:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1975 transitions. [2021-12-28 03:50:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-28 03:50:32,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:32,604 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] [2021-12-28 03:50:32,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:50:32,606 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1675028569, now seen corresponding path program 1 times [2021-12-28 03:50:32,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:32,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589196428] [2021-12-28 03:50:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:32,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:50:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:32,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:50:32,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:32,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589196428] [2021-12-28 03:50:32,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589196428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:32,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:32,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:50:32,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641869594] [2021-12-28 03:50:32,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:32,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:50:32,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:32,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:50:32,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:50:32,724 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) [2021-12-28 03:50:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:33,742 INFO L93 Difference]: Finished difference Result 4742 states and 6959 transitions. [2021-12-28 03:50:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:50:33,742 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 [2021-12-28 03:50:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:33,761 INFO L225 Difference]: With dead ends: 4742 [2021-12-28 03:50:33,761 INFO L226 Difference]: Without dead ends: 3377 [2021-12-28 03:50:33,766 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 [2021-12-28 03:50:33,767 INFO L933 BasicCegarLoop]: 1138 mSDtfsCounter, 1730 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:50:33,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1809 Valid, 2594 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 03:50:33,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2021-12-28 03:50:33,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 2666. [2021-12-28 03:50:33,868 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) [2021-12-28 03:50:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3842 transitions. [2021-12-28 03:50:33,879 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3842 transitions. Word has length 28 [2021-12-28 03:50:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:33,879 INFO L470 AbstractCegarLoop]: Abstraction has 2666 states and 3842 transitions. [2021-12-28 03:50:33,880 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) [2021-12-28 03:50:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3842 transitions. [2021-12-28 03:50:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 03:50:33,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:33,881 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] [2021-12-28 03:50:33,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:50:33,881 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash -848421556, now seen corresponding path program 1 times [2021-12-28 03:50:33,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:33,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207451012] [2021-12-28 03:50:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:33,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:50:33,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:33,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207451012] [2021-12-28 03:50:33,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207451012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:33,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:33,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:50:33,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392797583] [2021-12-28 03:50:33,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:33,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:50:33,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:33,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:50:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:50:33,921 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) [2021-12-28 03:50:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:33,966 INFO L93 Difference]: Finished difference Result 2668 states and 3843 transitions. [2021-12-28 03:50:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:50:33,966 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 [2021-12-28 03:50:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:33,974 INFO L225 Difference]: With dead ends: 2668 [2021-12-28 03:50:33,975 INFO L226 Difference]: Without dead ends: 2665 [2021-12-28 03:50:33,976 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 [2021-12-28 03:50:33,977 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 [2021-12-28 03:50:33,977 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] [2021-12-28 03:50:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-12-28 03:50:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2665. [2021-12-28 03:50:34,039 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) [2021-12-28 03:50:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3840 transitions. [2021-12-28 03:50:34,052 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3840 transitions. Word has length 22 [2021-12-28 03:50:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:34,053 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 3840 transitions. [2021-12-28 03:50:34,053 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) [2021-12-28 03:50:34,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3840 transitions. [2021-12-28 03:50:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 03:50:34,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:34,055 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] [2021-12-28 03:50:34,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:50:34,059 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:34,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:34,059 INFO L85 PathProgramCache]: Analyzing trace with hash -531608048, now seen corresponding path program 1 times [2021-12-28 03:50:34,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:34,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701609106] [2021-12-28 03:50:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:34,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:50:34,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:34,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701609106] [2021-12-28 03:50:34,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701609106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:34,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:34,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:50:34,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533601531] [2021-12-28 03:50:34,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:34,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:50:34,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:34,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:50:34,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:50:34,128 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) [2021-12-28 03:50:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:34,176 INFO L93 Difference]: Finished difference Result 2667 states and 3841 transitions. [2021-12-28 03:50:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:50:34,176 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 [2021-12-28 03:50:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:34,186 INFO L225 Difference]: With dead ends: 2667 [2021-12-28 03:50:34,186 INFO L226 Difference]: Without dead ends: 2664 [2021-12-28 03:50:34,187 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 [2021-12-28 03:50:34,193 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 [2021-12-28 03:50:34,194 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] [2021-12-28 03:50:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-12-28 03:50:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2664. [2021-12-28 03:50:34,252 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) [2021-12-28 03:50:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3838 transitions. [2021-12-28 03:50:34,266 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3838 transitions. Word has length 23 [2021-12-28 03:50:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:34,267 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 3838 transitions. [2021-12-28 03:50:34,267 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) [2021-12-28 03:50:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3838 transitions. [2021-12-28 03:50:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-28 03:50:34,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:34,269 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] [2021-12-28 03:50:34,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:50:34,269 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash 699680975, now seen corresponding path program 1 times [2021-12-28 03:50:34,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:34,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731086856] [2021-12-28 03:50:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:34,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:50:34,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:34,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731086856] [2021-12-28 03:50:34,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731086856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:34,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:34,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:50:34,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255823729] [2021-12-28 03:50:34,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:34,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:50:34,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:34,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:50:34,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:50:34,322 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) [2021-12-28 03:50:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:34,371 INFO L93 Difference]: Finished difference Result 2666 states and 3839 transitions. [2021-12-28 03:50:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:50:34,372 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 [2021-12-28 03:50:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:34,382 INFO L225 Difference]: With dead ends: 2666 [2021-12-28 03:50:34,383 INFO L226 Difference]: Without dead ends: 2663 [2021-12-28 03:50:34,384 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 [2021-12-28 03:50:34,386 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 [2021-12-28 03:50:34,386 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] [2021-12-28 03:50:34,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-12-28 03:50:34,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2021-12-28 03:50:34,463 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) [2021-12-28 03:50:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3836 transitions. [2021-12-28 03:50:34,473 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3836 transitions. Word has length 24 [2021-12-28 03:50:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:34,474 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3836 transitions. [2021-12-28 03:50:34,474 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) [2021-12-28 03:50:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3836 transitions. [2021-12-28 03:50:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-28 03:50:34,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:34,475 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] [2021-12-28 03:50:34,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:50:34,476 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:34,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:34,476 INFO L85 PathProgramCache]: Analyzing trace with hash 876720022, now seen corresponding path program 1 times [2021-12-28 03:50:34,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:34,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253907453] [2021-12-28 03:50:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:34,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:34,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:50:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:50:34,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:34,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253907453] [2021-12-28 03:50:34,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253907453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:34,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:34,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:50:34,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846675548] [2021-12-28 03:50:34,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:34,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:50:34,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:50:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:50:34,527 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) [2021-12-28 03:50:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:35,507 INFO L93 Difference]: Finished difference Result 9271 states and 13570 transitions. [2021-12-28 03:50:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:50:35,508 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 [2021-12-28 03:50:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:35,543 INFO L225 Difference]: With dead ends: 9271 [2021-12-28 03:50:35,543 INFO L226 Difference]: Without dead ends: 6611 [2021-12-28 03:50:35,553 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 [2021-12-28 03:50:35,554 INFO L933 BasicCegarLoop]: 1297 mSDtfsCounter, 1645 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:50:35,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 2819 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 03:50:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6611 states. [2021-12-28 03:50:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6611 to 5207. [2021-12-28 03:50:35,732 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) [2021-12-28 03:50:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 7482 transitions. [2021-12-28 03:50:35,789 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 7482 transitions. Word has length 30 [2021-12-28 03:50:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:35,790 INFO L470 AbstractCegarLoop]: Abstraction has 5207 states and 7482 transitions. [2021-12-28 03:50:35,790 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) [2021-12-28 03:50:35,790 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 7482 transitions. [2021-12-28 03:50:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 03:50:35,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:35,791 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] [2021-12-28 03:50:35,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:50:35,791 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash 214939891, now seen corresponding path program 1 times [2021-12-28 03:50:35,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:35,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288947651] [2021-12-28 03:50:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:35,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:50:35,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:35,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288947651] [2021-12-28 03:50:35,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288947651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:35,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:35,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:50:35,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935261135] [2021-12-28 03:50:35,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:35,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:50:35,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:35,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:50:35,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:50:35,838 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) [2021-12-28 03:50:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:35,980 INFO L93 Difference]: Finished difference Result 11493 states and 16556 transitions. [2021-12-28 03:50:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:50:35,980 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 [2021-12-28 03:50:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:36,015 INFO L225 Difference]: With dead ends: 11493 [2021-12-28 03:50:36,016 INFO L226 Difference]: Without dead ends: 6282 [2021-12-28 03:50:36,034 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 [2021-12-28 03:50:36,035 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 [2021-12-28 03:50:36,036 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] [2021-12-28 03:50:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-12-28 03:50:36,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6252. [2021-12-28 03:50:36,299 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) [2021-12-28 03:50:36,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 8901 transitions. [2021-12-28 03:50:36,320 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 8901 transitions. Word has length 25 [2021-12-28 03:50:36,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:36,321 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 8901 transitions. [2021-12-28 03:50:36,321 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) [2021-12-28 03:50:36,321 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 8901 transitions. [2021-12-28 03:50:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 03:50:36,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:36,329 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] [2021-12-28 03:50:36,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:50:36,330 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:36,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash 705413493, now seen corresponding path program 1 times [2021-12-28 03:50:36,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:36,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229355495] [2021-12-28 03:50:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:36,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:36,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:50:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:50:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:36,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:50:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 03:50:36,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:36,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229355495] [2021-12-28 03:50:36,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229355495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:36,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:36,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:50:36,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35537798] [2021-12-28 03:50:36,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:36,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:50:36,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:36,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:50:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:50:36,435 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) [2021-12-28 03:50:37,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:37,896 INFO L93 Difference]: Finished difference Result 9814 states and 14385 transitions. [2021-12-28 03:50:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:50:37,896 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 [2021-12-28 03:50:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:37,974 INFO L225 Difference]: With dead ends: 9814 [2021-12-28 03:50:37,974 INFO L226 Difference]: Without dead ends: 8774 [2021-12-28 03:50:37,983 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 [2021-12-28 03:50:37,985 INFO L933 BasicCegarLoop]: 1173 mSDtfsCounter, 1533 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:50:37,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 2555 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 03:50:37,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8774 states. [2021-12-28 03:50:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8774 to 6232. [2021-12-28 03:50:38,233 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) [2021-12-28 03:50:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 8829 transitions. [2021-12-28 03:50:38,254 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 8829 transitions. Word has length 57 [2021-12-28 03:50:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:38,254 INFO L470 AbstractCegarLoop]: Abstraction has 6232 states and 8829 transitions. [2021-12-28 03:50:38,254 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) [2021-12-28 03:50:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 8829 transitions. [2021-12-28 03:50:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-28 03:50:38,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:38,268 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] [2021-12-28 03:50:38,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:50:38,269 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:38,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1346697186, now seen corresponding path program 1 times [2021-12-28 03:50:38,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:38,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885761666] [2021-12-28 03:50:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:38,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:50:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:50:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:50:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:50:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:50:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 03:50:38,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:38,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885761666] [2021-12-28 03:50:38,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885761666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:38,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:38,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:50:38,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118700901] [2021-12-28 03:50:38,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:38,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:50:38,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:38,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:50:38,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:50:38,491 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) [2021-12-28 03:50:40,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:40,697 INFO L93 Difference]: Finished difference Result 23926 states and 34961 transitions. [2021-12-28 03:50:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:50:40,698 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 [2021-12-28 03:50:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:40,778 INFO L225 Difference]: With dead ends: 23926 [2021-12-28 03:50:40,778 INFO L226 Difference]: Without dead ends: 17697 [2021-12-28 03:50:40,804 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 [2021-12-28 03:50:40,806 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 1794 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:50:40,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 3240 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 03:50:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17697 states. [2021-12-28 03:50:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17697 to 12272. [2021-12-28 03:50:41,311 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) [2021-12-28 03:50:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12272 states to 12272 states and 17331 transitions. [2021-12-28 03:50:41,349 INFO L78 Accepts]: Start accepts. Automaton has 12272 states and 17331 transitions. Word has length 124 [2021-12-28 03:50:41,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:41,349 INFO L470 AbstractCegarLoop]: Abstraction has 12272 states and 17331 transitions. [2021-12-28 03:50:41,350 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) [2021-12-28 03:50:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 12272 states and 17331 transitions. [2021-12-28 03:50:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-28 03:50:41,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:41,372 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] [2021-12-28 03:50:41,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:50:41,373 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:41,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:41,373 INFO L85 PathProgramCache]: Analyzing trace with hash 262411884, now seen corresponding path program 1 times [2021-12-28 03:50:41,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:41,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537240902] [2021-12-28 03:50:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:41,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:50:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:50:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:50:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:50:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:50:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:41,524 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 03:50:41,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:41,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537240902] [2021-12-28 03:50:41,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537240902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:41,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:41,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:50:41,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617696315] [2021-12-28 03:50:41,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:41,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:50:41,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:41,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:50:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:50:41,527 INFO L87 Difference]: Start difference. First operand 12272 states and 17331 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (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) [2021-12-28 03:50:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:44,007 INFO L93 Difference]: Finished difference Result 42274 states and 61523 transitions. [2021-12-28 03:50:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:50:44,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (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 126 [2021-12-28 03:50:44,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:44,153 INFO L225 Difference]: With dead ends: 42274 [2021-12-28 03:50:44,153 INFO L226 Difference]: Without dead ends: 30005 [2021-12-28 03:50:44,201 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 [2021-12-28 03:50:44,202 INFO L933 BasicCegarLoop]: 1711 mSDtfsCounter, 1813 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 3548 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:50:44,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1910 Valid, 3548 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 03:50:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30005 states. [2021-12-28 03:50:45,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30005 to 20916. [2021-12-28 03:50:45,124 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) [2021-12-28 03:50:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20916 states to 20916 states and 29499 transitions. [2021-12-28 03:50:45,187 INFO L78 Accepts]: Start accepts. Automaton has 20916 states and 29499 transitions. Word has length 126 [2021-12-28 03:50:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:45,187 INFO L470 AbstractCegarLoop]: Abstraction has 20916 states and 29499 transitions. [2021-12-28 03:50:45,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (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) [2021-12-28 03:50:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 20916 states and 29499 transitions. [2021-12-28 03:50:45,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-28 03:50:45,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:45,227 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] [2021-12-28 03:50:45,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:50:45,228 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:45,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:45,229 INFO L85 PathProgramCache]: Analyzing trace with hash -284839104, now seen corresponding path program 1 times [2021-12-28 03:50:45,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:45,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718995975] [2021-12-28 03:50:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:45,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:50:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:50:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:50:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:50:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 03:50:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-28 03:50:45,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:45,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718995975] [2021-12-28 03:50:45,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718995975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:45,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:45,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:50:45,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114915614] [2021-12-28 03:50:45,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:45,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:50:45,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:50:45,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:50:45,425 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) [2021-12-28 03:50:47,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:47,234 INFO L93 Difference]: Finished difference Result 50925 states and 73739 transitions. [2021-12-28 03:50:47,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:50:47,234 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 [2021-12-28 03:50:47,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:47,369 INFO L225 Difference]: With dead ends: 50925 [2021-12-28 03:50:47,370 INFO L226 Difference]: Without dead ends: 30012 [2021-12-28 03:50:47,425 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 [2021-12-28 03:50:47,426 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 706 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:50:47,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 2402 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 03:50:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30012 states. [2021-12-28 03:50:48,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30012 to 20940. [2021-12-28 03:50:48,279 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) [2021-12-28 03:50:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20940 states to 20940 states and 29523 transitions. [2021-12-28 03:50:48,345 INFO L78 Accepts]: Start accepts. Automaton has 20940 states and 29523 transitions. Word has length 141 [2021-12-28 03:50:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:48,345 INFO L470 AbstractCegarLoop]: Abstraction has 20940 states and 29523 transitions. [2021-12-28 03:50:48,346 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) [2021-12-28 03:50:48,346 INFO L276 IsEmpty]: Start isEmpty. Operand 20940 states and 29523 transitions. [2021-12-28 03:50:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-28 03:50:48,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:48,390 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] [2021-12-28 03:50:48,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:50:48,390 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:48,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1652804509, now seen corresponding path program 1 times [2021-12-28 03:50:48,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:48,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580508236] [2021-12-28 03:50:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:48,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:50:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:50:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:48,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:50:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:48,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:50:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:48,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:49,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:50:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 03:50:49,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:49,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580508236] [2021-12-28 03:50:49,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580508236] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:50:49,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831337718] [2021-12-28 03:50:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:49,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:50:49,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:50:49,013 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) [2021-12-28 03:50:49,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:50:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:49,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-28 03:50:49,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:50:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 03:50:50,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:50:50,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831337718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:50,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:50:50,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2021-12-28 03:50:50,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105803038] [2021-12-28 03:50:50,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:50,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 03:50:50,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 03:50:50,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=747, Unknown=0, NotChecked=0, Total=812 [2021-12-28 03:50:50,078 INFO L87 Difference]: Start difference. First operand 20940 states and 29523 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) [2021-12-28 03:50:51,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:51,579 INFO L93 Difference]: Finished difference Result 44229 states and 63211 transitions. [2021-12-28 03:50:51,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:50:51,580 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 [2021-12-28 03:50:51,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:51,654 INFO L225 Difference]: With dead ends: 44229 [2021-12-28 03:50:51,655 INFO L226 Difference]: Without dead ends: 23292 [2021-12-28 03:50:51,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2021-12-28 03:50:51,699 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 1247 mSDsluCounter, 15492 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 16464 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:50:51,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1260 Valid, 16464 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:50:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23292 states. [2021-12-28 03:50:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23292 to 22844. [2021-12-28 03:50:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22844 states, 17502 states have (on average 1.4077248314478346) internal successors, (24638), 17614 states have internal predecessors, (24638), 3737 states have call successors, (3737), 1519 states have call predecessors, (3737), 1604 states have return successors, (4044), 3790 states have call predecessors, (4044), 3700 states have call successors, (4044) [2021-12-28 03:50:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22844 states to 22844 states and 32419 transitions. [2021-12-28 03:50:52,586 INFO L78 Accepts]: Start accepts. Automaton has 22844 states and 32419 transitions. Word has length 140 [2021-12-28 03:50:52,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:52,587 INFO L470 AbstractCegarLoop]: Abstraction has 22844 states and 32419 transitions. [2021-12-28 03:50:52,587 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) [2021-12-28 03:50:52,587 INFO L276 IsEmpty]: Start isEmpty. Operand 22844 states and 32419 transitions. [2021-12-28 03:50:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-28 03:50:52,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:52,624 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] [2021-12-28 03:50:52,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 03:50:52,845 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,SelfDestructingSolverStorable11 [2021-12-28 03:50:52,845 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:52,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1093231137, now seen corresponding path program 1 times [2021-12-28 03:50:52,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:52,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920062221] [2021-12-28 03:50:52,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:52,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:52,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:50:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:52,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:50:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:50:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:50:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:50:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 03:50:53,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:53,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920062221] [2021-12-28 03:50:53,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920062221] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:50:53,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797719206] [2021-12-28 03:50:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:53,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:50:53,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:50:53,344 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) [2021-12-28 03:50:53,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:50:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:53,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-28 03:50:53,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:50:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 03:50:54,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:50:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 03:50:55,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797719206] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:50:55,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:50:55,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 35 [2021-12-28 03:50:55,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147859564] [2021-12-28 03:50:55,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:50:55,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-28 03:50:55,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:55,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-28 03:50:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-12-28 03:50:55,337 INFO L87 Difference]: Start difference. First operand 22844 states and 32419 transitions. Second operand has 35 states, 35 states have (on average 3.914285714285714) internal successors, (137), 22 states have internal predecessors, (137), 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) [2021-12-28 03:51:02,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:02,833 INFO L93 Difference]: Finished difference Result 62645 states and 97579 transitions. [2021-12-28 03:51:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-28 03:51:02,833 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.914285714285714) internal successors, (137), 22 states have internal predecessors, (137), 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 140 [2021-12-28 03:51:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:03,037 INFO L225 Difference]: With dead ends: 62645 [2021-12-28 03:51:03,037 INFO L226 Difference]: Without dead ends: 39804 [2021-12-28 03:51:03,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=206, Invalid=2764, Unknown=0, NotChecked=0, Total=2970 [2021-12-28 03:51:03,131 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 534 mSDsluCounter, 21828 mSDsCounter, 0 mSdLazyCounter, 9169 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 22831 SdHoareTripleChecker+Invalid, 9421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 9169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:03,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 22831 Invalid, 9421 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 9169 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-28 03:51:03,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39804 states. [2021-12-28 03:51:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39804 to 23820. [2021-12-28 03:51:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23820 states, 18254 states have (on average 1.3931193163142326) internal successors, (25430), 18382 states have internal predecessors, (25430), 3801 states have call successors, (3801), 1519 states have call predecessors, (3801), 1764 states have return successors, (4668), 3998 states have call predecessors, (4668), 3764 states have call successors, (4668) [2021-12-28 03:51:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23820 states to 23820 states and 33899 transitions. [2021-12-28 03:51:04,510 INFO L78 Accepts]: Start accepts. Automaton has 23820 states and 33899 transitions. Word has length 140 [2021-12-28 03:51:04,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:04,512 INFO L470 AbstractCegarLoop]: Abstraction has 23820 states and 33899 transitions. [2021-12-28 03:51:04,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.914285714285714) internal successors, (137), 22 states have internal predecessors, (137), 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) [2021-12-28 03:51:04,513 INFO L276 IsEmpty]: Start isEmpty. Operand 23820 states and 33899 transitions. [2021-12-28 03:51:04,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-28 03:51:04,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:04,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:04,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-28 03:51:04,802 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,SelfDestructingSolverStorable12 [2021-12-28 03:51:04,803 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1504058556, now seen corresponding path program 1 times [2021-12-28 03:51:04,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:04,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288618698] [2021-12-28 03:51:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:04,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:51:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:51:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 03:51:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:51:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:51:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 03:51:05,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:05,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288618698] [2021-12-28 03:51:05,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288618698] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:51:05,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572259556] [2021-12-28 03:51:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:05,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:51:05,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:51:05,188 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) [2021-12-28 03:51:05,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:51:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:05,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-28 03:51:05,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:51:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-28 03:51:05,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:51:05,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572259556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:05,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:51:05,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2021-12-28 03:51:05,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795562658] [2021-12-28 03:51:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:05,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:51:05,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:05,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:51:05,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:51:05,909 INFO L87 Difference]: Start difference. First operand 23820 states and 33899 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 5 states have internal predecessors, (95), 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) [2021-12-28 03:51:07,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:07,059 INFO L93 Difference]: Finished difference Result 50229 states and 72363 transitions. [2021-12-28 03:51:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:51:07,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 5 states have internal predecessors, (95), 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 154 [2021-12-28 03:51:07,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:07,143 INFO L225 Difference]: With dead ends: 50229 [2021-12-28 03:51:07,144 INFO L226 Difference]: Without dead ends: 26412 [2021-12-28 03:51:07,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:51:07,187 INFO L933 BasicCegarLoop]: 1034 mSDtfsCounter, 149 mSDsluCounter, 5079 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 6113 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 [2021-12-28 03:51:07,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 6113 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:51:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26412 states. [2021-12-28 03:51:08,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26412 to 25068. [2021-12-28 03:51:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25068 states, 19134 states have (on average 1.3838193791157103) internal successors, (26478), 19238 states have internal predecessors, (26478), 4105 states have call successors, (4105), 1583 states have call predecessors, (4105), 1828 states have return successors, (5244), 4326 states have call predecessors, (5244), 4068 states have call successors, (5244) [2021-12-28 03:51:08,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25068 states to 25068 states and 35827 transitions. [2021-12-28 03:51:08,171 INFO L78 Accepts]: Start accepts. Automaton has 25068 states and 35827 transitions. Word has length 154 [2021-12-28 03:51:08,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:08,172 INFO L470 AbstractCegarLoop]: Abstraction has 25068 states and 35827 transitions. [2021-12-28 03:51:08,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 5 states have internal predecessors, (95), 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) [2021-12-28 03:51:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 25068 states and 35827 transitions. [2021-12-28 03:51:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 03:51:08,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:08,244 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:08,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:51:08,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:51:08,465 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash -48639029, now seen corresponding path program 1 times [2021-12-28 03:51:08,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:08,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963650250] [2021-12-28 03:51:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:08,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:51:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:51:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:51:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:51:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 03:51:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 03:51:08,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:08,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963650250] [2021-12-28 03:51:08,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963650250] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:51:08,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988939628] [2021-12-28 03:51:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:08,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:51:08,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:51:08,861 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) [2021-12-28 03:51:08,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:51:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:09,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-28 03:51:09,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:51:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 03:51:09,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:51:09,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988939628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:09,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:51:09,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 19 [2021-12-28 03:51:09,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728752278] [2021-12-28 03:51:09,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:09,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 03:51:09,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:09,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 03:51:09,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:51:09,718 INFO L87 Difference]: Start difference. First operand 25068 states and 35827 transitions. Second operand has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 11 states have internal predecessors, (113), 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) [2021-12-28 03:51:11,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:11,324 INFO L93 Difference]: Finished difference Result 50957 states and 73355 transitions. [2021-12-28 03:51:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 03:51:11,325 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 11 states have internal predecessors, (113), 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 151 [2021-12-28 03:51:11,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:11,450 INFO L225 Difference]: With dead ends: 50957 [2021-12-28 03:51:11,450 INFO L226 Difference]: Without dead ends: 25892 [2021-12-28 03:51:11,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2021-12-28 03:51:11,524 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 1277 mSDsluCounter, 9685 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 10660 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:11,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 10660 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:51:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25892 states. [2021-12-28 03:51:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25892 to 25404. [2021-12-28 03:51:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25404 states, 19374 states have (on average 1.3827810467637038) internal successors, (26790), 19526 states have internal predecessors, (26790), 4153 states have call successors, (4153), 1583 states have call predecessors, (4153), 1876 states have return successors, (5436), 4374 states have call predecessors, (5436), 4116 states have call successors, (5436) [2021-12-28 03:51:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25404 states to 25404 states and 36379 transitions. [2021-12-28 03:51:12,657 INFO L78 Accepts]: Start accepts. Automaton has 25404 states and 36379 transitions. Word has length 151 [2021-12-28 03:51:12,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:12,658 INFO L470 AbstractCegarLoop]: Abstraction has 25404 states and 36379 transitions. [2021-12-28 03:51:12,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 11 states have internal predecessors, (113), 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) [2021-12-28 03:51:12,658 INFO L276 IsEmpty]: Start isEmpty. Operand 25404 states and 36379 transitions. [2021-12-28 03:51:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 03:51:12,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:12,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:12,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:51:12,907 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,SelfDestructingSolverStorable14 [2021-12-28 03:51:12,908 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1465451975, now seen corresponding path program 1 times [2021-12-28 03:51:12,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:12,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295982990] [2021-12-28 03:51:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:12,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:51:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:51:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:51:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:51:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 03:51:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-28 03:51:13,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:13,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295982990] [2021-12-28 03:51:13,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295982990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:13,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:13,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:51:13,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914100486] [2021-12-28 03:51:13,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:13,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:51:13,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:51:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:51:13,177 INFO L87 Difference]: Start difference. First operand 25404 states and 36379 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 6 states have internal predecessors, (92), 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) [2021-12-28 03:51:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:15,953 INFO L93 Difference]: Finished difference Result 59061 states and 86859 transitions. [2021-12-28 03:51:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:51:15,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 6 states have internal predecessors, (92), 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 151 [2021-12-28 03:51:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:16,097 INFO L225 Difference]: With dead ends: 59061 [2021-12-28 03:51:16,097 INFO L226 Difference]: Without dead ends: 33660 [2021-12-28 03:51:16,170 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 [2021-12-28 03:51:16,171 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 682 mSDsluCounter, 5112 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 6047 SdHoareTripleChecker+Invalid, 2487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:16,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 6047 Invalid, 2487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 2137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 03:51:16,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33660 states. [2021-12-28 03:51:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33660 to 25644. [2021-12-28 03:51:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25644 states, 19574 states have (on average 1.378869929498314) internal successors, (26990), 19686 states have internal predecessors, (26990), 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) [2021-12-28 03:51:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25644 states to 25644 states and 36659 transitions. [2021-12-28 03:51:17,351 INFO L78 Accepts]: Start accepts. Automaton has 25644 states and 36659 transitions. Word has length 151 [2021-12-28 03:51:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:17,352 INFO L470 AbstractCegarLoop]: Abstraction has 25644 states and 36659 transitions. [2021-12-28 03:51:17,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 6 states have internal predecessors, (92), 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) [2021-12-28 03:51:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 25644 states and 36659 transitions. [2021-12-28 03:51:17,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-28 03:51:17,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:17,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:17,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 03:51:17,395 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:17,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:17,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1802103343, now seen corresponding path program 1 times [2021-12-28 03:51:17,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:17,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778131901] [2021-12-28 03:51:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:17,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:51:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:51:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:51:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:51:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 03:51:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-28 03:51:17,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:17,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778131901] [2021-12-28 03:51:17,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778131901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:17,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:17,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:51:17,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246230381] [2021-12-28 03:51:17,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:17,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:51:17,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:51:17,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:51:17,771 INFO L87 Difference]: Start difference. First operand 25644 states and 36659 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 03:51:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:20,587 INFO L93 Difference]: Finished difference Result 59301 states and 87827 transitions. [2021-12-28 03:51:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:51:20,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 154 [2021-12-28 03:51:20,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:20,786 INFO L225 Difference]: With dead ends: 59301 [2021-12-28 03:51:20,787 INFO L226 Difference]: Without dead ends: 33660 [2021-12-28 03:51:20,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:51:20,899 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 406 mSDsluCounter, 3988 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 4934 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:20,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 4934 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 03:51:20,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33660 states. [2021-12-28 03:51:22,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33660 to 25644. [2021-12-28 03:51:22,341 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) [2021-12-28 03:51:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25644 states to 25644 states and 36619 transitions. [2021-12-28 03:51:22,439 INFO L78 Accepts]: Start accepts. Automaton has 25644 states and 36619 transitions. Word has length 154 [2021-12-28 03:51:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:22,440 INFO L470 AbstractCegarLoop]: Abstraction has 25644 states and 36619 transitions. [2021-12-28 03:51:22,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 03:51:22,440 INFO L276 IsEmpty]: Start isEmpty. Operand 25644 states and 36619 transitions. [2021-12-28 03:51:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-28 03:51:22,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:22,486 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] [2021-12-28 03:51:22,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 03:51:22,486 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:22,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash 647496787, now seen corresponding path program 1 times [2021-12-28 03:51:22,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:22,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378753486] [2021-12-28 03:51:22,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:22,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:22,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:51:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:51:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:22,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:22,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:51:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:51:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:22,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 03:51:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:51:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-28 03:51:23,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:23,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378753486] [2021-12-28 03:51:23,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378753486] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:51:23,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30967651] [2021-12-28 03:51:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:23,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:51:23,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:51:23,053 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) [2021-12-28 03:51:23,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:51:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:24,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-28 03:51:24,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:51:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-28 03:51:24,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:51:24,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30967651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:24,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:51:24,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [20] total 24 [2021-12-28 03:51:24,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30606306] [2021-12-28 03:51:24,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:24,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:51:24,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:51:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2021-12-28 03:51:24,560 INFO L87 Difference]: Start difference. First operand 25644 states and 36619 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8)