./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.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 a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:32:08,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:32:08,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:32:08,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:32:08,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:32:08,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:32:08,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:32:08,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:32:08,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:32:08,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:32:08,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:32:08,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:32:08,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:32:08,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:32:08,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:32:08,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:32:08,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:32:08,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:32:08,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:32:08,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:32:08,454 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:32:08,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:32:08,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:32:08,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:32:08,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:32:08,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:32:08,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:32:08,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:32:08,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:32:08,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:32:08,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:32:08,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:32:08,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:32:08,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:32:08,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:32:08,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:32:08,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:32:08,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:32:08,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:32:08,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:32:08,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:32:08,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:32:08,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:32:08,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:32:08,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:32:08,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:32:08,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:32:08,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:32:08,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:32:08,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:32:08,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:32:08,497 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:32:08,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:32:08,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:32:08,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:32:08,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:32:08,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:32:08,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:32:08,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:32:08,498 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:32:08,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:32:08,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:32:08,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:32:08,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:32:08,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:32:08,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:32:08,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:32:08,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:32:08,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:32:08,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:32:08,500 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:32:08,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:32:08,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:32:08,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2022-07-19 23:32:08,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:32:08,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:32:08,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:32:08,718 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:32:08,718 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:32:08,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-07-19 23:32:08,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8e5ca52/fc3b7d8660cc4f64a39597b2bf7f780d/FLAGe564b44cc [2022-07-19 23:32:09,317 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:32:09,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-07-19 23:32:09,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8e5ca52/fc3b7d8660cc4f64a39597b2bf7f780d/FLAGe564b44cc [2022-07-19 23:32:09,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8e5ca52/fc3b7d8660cc4f64a39597b2bf7f780d [2022-07-19 23:32:09,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:32:09,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:32:09,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:32:09,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:32:09,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:32:09,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:32:09" (1/1) ... [2022-07-19 23:32:09,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585959a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:09, skipping insertion in model container [2022-07-19 23:32:09,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:32:09" (1/1) ... [2022-07-19 23:32:09,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:32:09,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:32:10,209 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-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2022-07-19 23:32:10,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:32:10,562 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:32:10,681 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-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2022-07-19 23:32:10,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:32:10,871 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:32:10,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10 WrapperNode [2022-07-19 23:32:10,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:32:10,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:32:10,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:32:10,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:32:10,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (1/1) ... [2022-07-19 23:32:10,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (1/1) ... [2022-07-19 23:32:10,994 INFO L137 Inliner]: procedures = 199, calls = 723, calls flagged for inlining = 106, calls inlined = 103, statements flattened = 2466 [2022-07-19 23:32:10,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:32:10,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:32:10,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:32:10,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:32:11,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (1/1) ... [2022-07-19 23:32:11,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (1/1) ... [2022-07-19 23:32:11,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (1/1) ... [2022-07-19 23:32:11,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (1/1) ... [2022-07-19 23:32:11,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (1/1) ... [2022-07-19 23:32:11,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (1/1) ... [2022-07-19 23:32:11,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (1/1) ... [2022-07-19 23:32:11,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:32:11,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:32:11,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:32:11,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:32:11,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (1/1) ... [2022-07-19 23:32:11,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:32:11,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:32:11,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 23:32:11,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 23:32:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:32:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:32:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-19 23:32:11,233 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-19 23:32:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:32:11,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:32:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:32:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:32:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure setup_descriptors [2022-07-19 23:32:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_descriptors [2022-07-19 23:32:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-19 23:32:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-19 23:32:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure disable_all_interrupts [2022-07-19 23:32:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_all_interrupts [2022-07-19 23:32:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:32:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:32:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_interrupt [2022-07-19 23:32:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_interrupt [2022-07-19 23:32:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:32:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:32:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:32:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:32:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-07-19 23:32:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-07-19 23:32:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-19 23:32:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-19 23:32:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-19 23:32:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-19 23:32:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_write_descriptor [2022-07-19 23:32:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_write_descriptor [2022-07-19 23:32:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-19 23:32:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-19 23:32:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:32:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-07-19 23:32:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-07-19 23:32:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:32:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-19 23:32:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-19 23:32:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-07-19 23:32:11,238 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-07-19 23:32:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-19 23:32:11,238 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-19 23:32:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-19 23:32:11,238 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-19 23:32:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:32:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:32:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_read_descriptor [2022-07-19 23:32:11,239 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_read_descriptor [2022-07-19 23:32:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-19 23:32:11,239 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-19 23:32:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-07-19 23:32:11,239 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-07-19 23:32:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-19 23:32:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-19 23:32:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-19 23:32:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-19 23:32:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-19 23:32:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-19 23:32:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2022-07-19 23:32:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2022-07-19 23:32:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:32:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:32:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:32:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-07-19 23:32:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-07-19 23:32:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-19 23:32:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-19 23:32:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:32:11,243 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-19 23:32:11,243 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-19 23:32:11,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:32:11,243 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-19 23:32:11,243 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-19 23:32:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:32:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:32:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_poll_controller [2022-07-19 23:32:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_poll_controller [2022-07-19 23:32:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:32:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-19 23:32:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-19 23:32:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:32:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:32:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure receive_active [2022-07-19 23:32:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure receive_active [2022-07-19 23:32:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:32:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:32:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-19 23:32:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-19 23:32:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:32:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure transmit_active [2022-07-19 23:32:11,246 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit_active [2022-07-19 23:32:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-19 23:32:11,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-19 23:32:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_receive [2022-07-19 23:32:11,246 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_receive [2022-07-19 23:32:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-07-19 23:32:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-07-19 23:32:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-19 23:32:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-19 23:32:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-19 23:32:11,248 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-19 23:32:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:32:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:32:11,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:32:11,668 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:32:11,676 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:32:11,862 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:32:12,991 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:32:13,000 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:32:13,001 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 23:32:13,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:32:13 BoogieIcfgContainer [2022-07-19 23:32:13,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:32:13,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:32:13,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:32:13,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:32:13,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:32:09" (1/3) ... [2022-07-19 23:32:13,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29735c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:32:13, skipping insertion in model container [2022-07-19 23:32:13,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:32:10" (2/3) ... [2022-07-19 23:32:13,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29735c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:32:13, skipping insertion in model container [2022-07-19 23:32:13,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:32:13" (3/3) ... [2022-07-19 23:32:13,010 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-07-19 23:32:13,021 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:32:13,021 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:32:13,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:32:13,073 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f69534d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f43dcb0 [2022-07-19 23:32:13,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:32:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 888 states, 644 states have (on average 1.406832298136646) internal successors, (906), 659 states have internal predecessors, (906), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) [2022-07-19 23:32:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 23:32:13,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:13,089 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:13,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:13,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash -979232113, now seen corresponding path program 1 times [2022-07-19 23:32:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:13,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454840020] [2022-07-19 23:32:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 23:32:13,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:13,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454840020] [2022-07-19 23:32:13,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454840020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:13,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:32:13,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:32:13,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590522709] [2022-07-19 23:32:13,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:13,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:32:13,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:13,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:32:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:32:13,483 INFO L87 Difference]: Start difference. First operand has 888 states, 644 states have (on average 1.406832298136646) internal successors, (906), 659 states have internal predecessors, (906), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:32:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:15,441 INFO L93 Difference]: Finished difference Result 2727 states and 4064 transitions. [2022-07-19 23:32:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:32:15,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-07-19 23:32:15,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:15,461 INFO L225 Difference]: With dead ends: 2727 [2022-07-19 23:32:15,461 INFO L226 Difference]: Without dead ends: 1818 [2022-07-19 23:32:15,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:32:15,474 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 1491 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:15,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 2712 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 23:32:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-07-19 23:32:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1720. [2022-07-19 23:32:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1254 states have (on average 1.2854864433811801) internal successors, (1612), 1268 states have internal predecessors, (1612), 381 states have call successors, (381), 85 states have call predecessors, (381), 84 states have return successors, (380), 378 states have call predecessors, (380), 380 states have call successors, (380) [2022-07-19 23:32:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2373 transitions. [2022-07-19 23:32:15,590 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2373 transitions. Word has length 35 [2022-07-19 23:32:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:15,590 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2373 transitions. [2022-07-19 23:32:15,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:32:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2373 transitions. [2022-07-19 23:32:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 23:32:15,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:15,593 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:15,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:32:15,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:15,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2045075246, now seen corresponding path program 1 times [2022-07-19 23:32:15,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:15,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417435073] [2022-07-19 23:32:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 23:32:15,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:15,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417435073] [2022-07-19 23:32:15,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417435073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:15,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:32:15,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:32:15,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243755615] [2022-07-19 23:32:15,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:15,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:32:15,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:15,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:32:15,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:32:15,726 INFO L87 Difference]: Start difference. First operand 1720 states and 2373 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:32:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:17,860 INFO L93 Difference]: Finished difference Result 5329 states and 7448 transitions. [2022-07-19 23:32:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:32:17,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-07-19 23:32:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:17,876 INFO L225 Difference]: With dead ends: 5329 [2022-07-19 23:32:17,876 INFO L226 Difference]: Without dead ends: 3614 [2022-07-19 23:32:17,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:32:17,883 INFO L413 NwaCegarLoop]: 1340 mSDtfsCounter, 1461 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 4342 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:17,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 4342 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 23:32:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-07-19 23:32:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3446. [2022-07-19 23:32:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 2511 states have (on average 1.2855436081242533) internal successors, (3228), 2543 states have internal predecessors, (3228), 758 states have call successors, (758), 169 states have call predecessors, (758), 176 states have return successors, (802), 755 states have call predecessors, (802), 757 states have call successors, (802) [2022-07-19 23:32:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 4788 transitions. [2022-07-19 23:32:17,987 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 4788 transitions. Word has length 38 [2022-07-19 23:32:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:17,987 INFO L495 AbstractCegarLoop]: Abstraction has 3446 states and 4788 transitions. [2022-07-19 23:32:17,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:32:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 4788 transitions. [2022-07-19 23:32:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-19 23:32:17,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:17,995 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:17,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:32:17,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:17,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash -792223232, now seen corresponding path program 1 times [2022-07-19 23:32:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:17,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780824488] [2022-07-19 23:32:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:17,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:32:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:32:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:32:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:32:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 23:32:18,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:18,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780824488] [2022-07-19 23:32:18,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780824488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:18,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:32:18,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:32:18,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985883305] [2022-07-19 23:32:18,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:18,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:32:18,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:32:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:32:18,347 INFO L87 Difference]: Start difference. First operand 3446 states and 4788 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:32:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:20,229 INFO L93 Difference]: Finished difference Result 9226 states and 12829 transitions. [2022-07-19 23:32:20,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:32:20,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-07-19 23:32:20,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:20,254 INFO L225 Difference]: With dead ends: 9226 [2022-07-19 23:32:20,255 INFO L226 Difference]: Without dead ends: 5790 [2022-07-19 23:32:20,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:32:20,269 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 1465 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:20,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 3241 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 23:32:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2022-07-19 23:32:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 5402. [2022-07-19 23:32:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 3965 states have (on average 1.2799495586380831) internal successors, (5075), 4033 states have internal predecessors, (5075), 1108 states have call successors, (1108), 309 states have call predecessors, (1108), 328 states have return successors, (1187), 1095 states have call predecessors, (1187), 1107 states have call successors, (1187) [2022-07-19 23:32:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 7370 transitions. [2022-07-19 23:32:20,443 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 7370 transitions. Word has length 143 [2022-07-19 23:32:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:20,445 INFO L495 AbstractCegarLoop]: Abstraction has 5402 states and 7370 transitions. [2022-07-19 23:32:20,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:32:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 7370 transitions. [2022-07-19 23:32:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-19 23:32:20,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:20,449 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:20,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:32:20,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:20,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:20,451 INFO L85 PathProgramCache]: Analyzing trace with hash 146331670, now seen corresponding path program 1 times [2022-07-19 23:32:20,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:20,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163886218] [2022-07-19 23:32:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:20,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:32:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:32:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 23:32:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 23:32:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 23:32:20,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:20,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163886218] [2022-07-19 23:32:20,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163886218] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:32:20,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967369063] [2022-07-19 23:32:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:20,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:20,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:32:20,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:32:20,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 23:32:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:21,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:32:21,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:32:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 23:32:21,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:32:21,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967369063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:21,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:32:21,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-19 23:32:21,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107393261] [2022-07-19 23:32:21,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:21,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:32:21,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:32:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:32:21,527 INFO L87 Difference]: Start difference. First operand 5402 states and 7370 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:32:22,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:22,287 INFO L93 Difference]: Finished difference Result 16194 states and 22104 transitions. [2022-07-19 23:32:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:32:22,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2022-07-19 23:32:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:22,328 INFO L225 Difference]: With dead ends: 16194 [2022-07-19 23:32:22,328 INFO L226 Difference]: Without dead ends: 10802 [2022-07-19 23:32:22,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:32:22,346 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 1094 mSDsluCounter, 3321 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 4777 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:22,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 4777 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 23:32:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10802 states. [2022-07-19 23:32:22,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10802 to 10762. [2022-07-19 23:32:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10762 states, 7889 states have (on average 1.2814044872607429) internal successors, (10109), 8061 states have internal predecessors, (10109), 2212 states have call successors, (2212), 617 states have call predecessors, (2212), 660 states have return successors, (2375), 2155 states have call predecessors, (2375), 2211 states have call successors, (2375) [2022-07-19 23:32:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10762 states to 10762 states and 14696 transitions. [2022-07-19 23:32:22,721 INFO L78 Accepts]: Start accepts. Automaton has 10762 states and 14696 transitions. Word has length 136 [2022-07-19 23:32:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:22,722 INFO L495 AbstractCegarLoop]: Abstraction has 10762 states and 14696 transitions. [2022-07-19 23:32:22,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:32:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 10762 states and 14696 transitions. [2022-07-19 23:32:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-19 23:32:22,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:22,728 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:22,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 23:32:22,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:22,947 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2041881488, now seen corresponding path program 1 times [2022-07-19 23:32:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:22,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168347064] [2022-07-19 23:32:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:22,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 23:32:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:32:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 23:32:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 23:32:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 23:32:23,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:23,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168347064] [2022-07-19 23:32:23,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168347064] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:32:23,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616613717] [2022-07-19 23:32:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:23,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:23,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:32:23,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:32:23,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 23:32:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:23,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:32:23,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:32:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 23:32:23,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:32:23,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616613717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:23,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:32:23,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-19 23:32:23,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260594734] [2022-07-19 23:32:23,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:23,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:32:23,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:23,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:32:23,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:32:23,715 INFO L87 Difference]: Start difference. First operand 10762 states and 14696 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:32:24,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:24,830 INFO L93 Difference]: Finished difference Result 32274 states and 44082 transitions. [2022-07-19 23:32:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:32:24,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2022-07-19 23:32:24,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:24,902 INFO L225 Difference]: With dead ends: 32274 [2022-07-19 23:32:24,902 INFO L226 Difference]: Without dead ends: 21522 [2022-07-19 23:32:24,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:32:24,935 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 1097 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 5055 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:24,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 5055 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 23:32:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21522 states. [2022-07-19 23:32:25,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21522 to 21514. [2022-07-19 23:32:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21514 states, 15769 states have (on average 1.2815650960745768) internal successors, (20209), 16117 states have internal predecessors, (20209), 4420 states have call successors, (4420), 1233 states have call predecessors, (4420), 1324 states have return successors, (4739), 4307 states have call predecessors, (4739), 4419 states have call successors, (4739) [2022-07-19 23:32:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21514 states to 21514 states and 29368 transitions. [2022-07-19 23:32:25,581 INFO L78 Accepts]: Start accepts. Automaton has 21514 states and 29368 transitions. Word has length 137 [2022-07-19 23:32:25,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:25,582 INFO L495 AbstractCegarLoop]: Abstraction has 21514 states and 29368 transitions. [2022-07-19 23:32:25,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:32:25,583 INFO L276 IsEmpty]: Start isEmpty. Operand 21514 states and 29368 transitions. [2022-07-19 23:32:25,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-19 23:32:25,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:25,588 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:25,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 23:32:25,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:25,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:25,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:25,809 INFO L85 PathProgramCache]: Analyzing trace with hash -756334801, now seen corresponding path program 1 times [2022-07-19 23:32:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:25,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930011175] [2022-07-19 23:32:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:25,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:25,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:25,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:32:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:25,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:25,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:25,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:32:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 23:32:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:26,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:26,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 23:32:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 23:32:26,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:26,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930011175] [2022-07-19 23:32:26,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930011175] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:32:26,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506991047] [2022-07-19 23:32:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:26,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:26,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:32:26,164 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) [2022-07-19 23:32:26,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 23:32:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:26,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:32:26,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:32:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 23:32:26,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:32:26,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506991047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:26,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:32:26,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-19 23:32:26,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130359625] [2022-07-19 23:32:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:26,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:32:26,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:32:26,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:32:26,762 INFO L87 Difference]: Start difference. First operand 21514 states and 29368 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:32:28,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:28,246 INFO L93 Difference]: Finished difference Result 64530 states and 88098 transitions. [2022-07-19 23:32:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:32:28,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2022-07-19 23:32:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:28,383 INFO L225 Difference]: With dead ends: 64530 [2022-07-19 23:32:28,384 INFO L226 Difference]: Without dead ends: 43026 [2022-07-19 23:32:28,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:32:28,443 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1106 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:28,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 4358 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 23:32:28,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43026 states. [2022-07-19 23:32:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43026 to 43018. [2022-07-19 23:32:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43018 states, 31529 states have (on average 1.2816454692505312) internal successors, (40409), 32229 states have internal predecessors, (40409), 8836 states have call successors, (8836), 2465 states have call predecessors, (8836), 2652 states have return successors, (9443), 8611 states have call predecessors, (9443), 8835 states have call successors, (9443) [2022-07-19 23:32:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43018 states to 43018 states and 58688 transitions. [2022-07-19 23:32:29,853 INFO L78 Accepts]: Start accepts. Automaton has 43018 states and 58688 transitions. Word has length 138 [2022-07-19 23:32:29,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:29,853 INFO L495 AbstractCegarLoop]: Abstraction has 43018 states and 58688 transitions. [2022-07-19 23:32:29,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:32:29,854 INFO L276 IsEmpty]: Start isEmpty. Operand 43018 states and 58688 transitions. [2022-07-19 23:32:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 23:32:29,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:29,859 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:29,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 23:32:30,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:30,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash 841584681, now seen corresponding path program 1 times [2022-07-19 23:32:30,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:30,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773948718] [2022-07-19 23:32:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 23:32:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:32:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 23:32:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 23:32:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 23:32:30,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:30,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773948718] [2022-07-19 23:32:30,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773948718] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:32:30,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636007852] [2022-07-19 23:32:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:30,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:30,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:32:30,272 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) [2022-07-19 23:32:30,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 23:32:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:30,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:32:30,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:32:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 23:32:30,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:32:30,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636007852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:30,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:32:30,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-19 23:32:30,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037244642] [2022-07-19 23:32:30,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:30,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:32:30,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:30,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:32:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:32:30,843 INFO L87 Difference]: Start difference. First operand 43018 states and 58688 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:32:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:33,437 INFO L93 Difference]: Finished difference Result 129042 states and 176058 transitions. [2022-07-19 23:32:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:32:33,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2022-07-19 23:32:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:33,770 INFO L225 Difference]: With dead ends: 129042 [2022-07-19 23:32:33,770 INFO L226 Difference]: Without dead ends: 85470 [2022-07-19 23:32:33,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:32:33,857 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1105 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:33,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 4167 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 23:32:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85470 states. [2022-07-19 23:32:36,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85470 to 85460. [2022-07-19 23:32:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85460 states, 62615 states have (on average 1.2817535734248982) internal successors, (80257), 64003 states have internal predecessors, (80257), 17590 states have call successors, (17590), 4891 states have call predecessors, (17590), 5254 states have return successors, (18706), 17139 states have call predecessors, (18706), 17589 states have call successors, (18706) [2022-07-19 23:32:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85460 states to 85460 states and 116553 transitions. [2022-07-19 23:32:37,003 INFO L78 Accepts]: Start accepts. Automaton has 85460 states and 116553 transitions. Word has length 139 [2022-07-19 23:32:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:37,004 INFO L495 AbstractCegarLoop]: Abstraction has 85460 states and 116553 transitions. [2022-07-19 23:32:37,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:32:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 85460 states and 116553 transitions. [2022-07-19 23:32:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 23:32:37,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:37,009 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:37,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 23:32:37,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:37,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:37,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:37,230 INFO L85 PathProgramCache]: Analyzing trace with hash 94199557, now seen corresponding path program 1 times [2022-07-19 23:32:37,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:37,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249185718] [2022-07-19 23:32:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:32:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:32:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:32:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 23:32:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 23:32:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 23:32:37,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:37,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249185718] [2022-07-19 23:32:37,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249185718] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:32:37,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528716776] [2022-07-19 23:32:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:37,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:37,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:32:37,653 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) [2022-07-19 23:32:37,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 23:32:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:38,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 23:32:38,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:32:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 23:32:38,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:32:38,483 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 23:32:38,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528716776] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:32:38,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:32:38,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2022-07-19 23:32:38,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145337040] [2022-07-19 23:32:38,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:32:38,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 23:32:38,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:38,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 23:32:38,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-07-19 23:32:38,485 INFO L87 Difference]: Start difference. First operand 85460 states and 116553 transitions. Second operand has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-19 23:32:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:50,594 INFO L93 Difference]: Finished difference Result 252988 states and 355512 transitions. [2022-07-19 23:32:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 23:32:50,594 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) Word has length 148 [2022-07-19 23:32:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:51,320 INFO L225 Difference]: With dead ends: 252988 [2022-07-19 23:32:51,321 INFO L226 Difference]: Without dead ends: 166692 [2022-07-19 23:32:51,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=283, Invalid=1523, Unknown=0, NotChecked=0, Total=1806 [2022-07-19 23:32:51,548 INFO L413 NwaCegarLoop]: 2409 mSDtfsCounter, 2733 mSDsluCounter, 17315 mSDsCounter, 0 mSdLazyCounter, 12855 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3108 SdHoareTripleChecker+Valid, 19724 SdHoareTripleChecker+Invalid, 13828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 12855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:51,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3108 Valid, 19724 Invalid, 13828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [973 Valid, 12855 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-19 23:32:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166692 states. [2022-07-19 23:32:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166692 to 132402. [2022-07-19 23:32:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132402 states, 96821 states have (on average 1.2711395255161586) internal successors, (123073), 99293 states have internal predecessors, (123073), 27232 states have call successors, (27232), 7309 states have call predecessors, (27232), 8348 states have return successors, (30817), 26659 states have call predecessors, (30817), 27231 states have call successors, (30817) [2022-07-19 23:32:57,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132402 states to 132402 states and 181122 transitions. [2022-07-19 23:32:57,419 INFO L78 Accepts]: Start accepts. Automaton has 132402 states and 181122 transitions. Word has length 148 [2022-07-19 23:32:57,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:57,420 INFO L495 AbstractCegarLoop]: Abstraction has 132402 states and 181122 transitions. [2022-07-19 23:32:57,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-19 23:32:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 132402 states and 181122 transitions. [2022-07-19 23:32:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-19 23:32:57,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:57,426 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:57,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 23:32:57,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:57,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash 286366410, now seen corresponding path program 1 times [2022-07-19 23:32:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:57,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728777298] [2022-07-19 23:32:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:57,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 23:32:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 23:32:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:32:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:32:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:32:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 23:32:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:32:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:32:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 23:32:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 23:32:58,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:58,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728777298] [2022-07-19 23:32:58,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728777298] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:32:58,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723942357] [2022-07-19 23:32:58,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:58,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:58,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:32:58,078 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:32:58,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 23:32:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 23:32:58,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:32:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 23:32:58,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:32:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-19 23:32:58,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723942357] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:32:58,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:32:58,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 22 [2022-07-19 23:32:58,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943653884] [2022-07-19 23:32:58,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:32:58,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 23:32:58,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 23:32:58,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-07-19 23:32:58,872 INFO L87 Difference]: Start difference. First operand 132402 states and 181122 transitions. Second operand has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) [2022-07-19 23:33:17,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:33:17,686 INFO L93 Difference]: Finished difference Result 343762 states and 481113 transitions. [2022-07-19 23:33:17,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-19 23:33:17,686 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) Word has length 165 [2022-07-19 23:33:17,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:33:18,830 INFO L225 Difference]: With dead ends: 343762 [2022-07-19 23:33:18,831 INFO L226 Difference]: Without dead ends: 210588 [2022-07-19 23:33:19,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=770, Invalid=4930, Unknown=0, NotChecked=0, Total=5700 [2022-07-19 23:33:19,187 INFO L413 NwaCegarLoop]: 2650 mSDtfsCounter, 9246 mSDsluCounter, 21434 mSDsCounter, 0 mSdLazyCounter, 18954 mSolverCounterSat, 4499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9782 SdHoareTripleChecker+Valid, 24084 SdHoareTripleChecker+Invalid, 23453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4499 IncrementalHoareTripleChecker+Valid, 18954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:33:19,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9782 Valid, 24084 Invalid, 23453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4499 Valid, 18954 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-07-19 23:33:19,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210588 states. [2022-07-19 23:33:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210588 to 132250. [2022-07-19 23:33:24,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132250 states, 96577 states have (on average 1.2670200979529287) internal successors, (122365), 98985 states have internal predecessors, (122365), 27232 states have call successors, (27232), 7309 states have call predecessors, (27232), 8440 states have return successors, (31003), 26815 states have call predecessors, (31003), 27231 states have call successors, (31003) [2022-07-19 23:33:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132250 states to 132250 states and 180600 transitions. [2022-07-19 23:33:25,593 INFO L78 Accepts]: Start accepts. Automaton has 132250 states and 180600 transitions. Word has length 165 [2022-07-19 23:33:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:33:25,595 INFO L495 AbstractCegarLoop]: Abstraction has 132250 states and 180600 transitions. [2022-07-19 23:33:25,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) [2022-07-19 23:33:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 132250 states and 180600 transitions. [2022-07-19 23:33:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-19 23:33:25,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:33:25,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:33:25,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 23:33:25,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:33:25,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:33:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:33:25,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1625373719, now seen corresponding path program 1 times [2022-07-19 23:33:25,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:33:25,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395031618] [2022-07-19 23:33:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:33:25,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:33:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:25,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:33:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:25,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:33:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:25,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:33:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:33:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:25,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 23:33:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:33:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:33:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:33:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:33:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:33:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:33:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:33:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:33:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 23:33:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:33:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:33:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:33:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:33:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:33:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 23:33:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-19 23:33:26,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:33:26,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395031618] [2022-07-19 23:33:26,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395031618] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:33:26,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294337899] [2022-07-19 23:33:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:33:26,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:33:26,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:33:26,120 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:33:26,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 23:33:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:26,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 23:33:26,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:33:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 23:33:26,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:33:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-19 23:33:26,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294337899] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:33:26,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:33:26,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 21 [2022-07-19 23:33:26,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662537837] [2022-07-19 23:33:26,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:33:26,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 23:33:26,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:33:26,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 23:33:26,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-07-19 23:33:26,931 INFO L87 Difference]: Start difference. First operand 132250 states and 180600 transitions. Second operand has 21 states, 21 states have (on average 10.047619047619047) internal successors, (211), 15 states have internal predecessors, (211), 8 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (38), 9 states have call predecessors, (38), 7 states have call successors, (38)