./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--caif--caif_hsi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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--caif--caif_hsi.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 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:03:02,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:03:02,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:03:02,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:03:02,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:03:02,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:03:02,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:03:02,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:03:02,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:03:02,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:03:02,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:03:02,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:03:02,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:03:02,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:03:02,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:03:02,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:03:02,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:03:02,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:03:02,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:03:02,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:03:02,345 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:03:02,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:03:02,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:03:02,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:03:02,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:03:02,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:03:02,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:03:02,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:03:02,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:03:02,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:03:02,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:03:02,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:03:02,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:03:02,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:03:02,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:03:02,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:03:02,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:03:02,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:03:02,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:03:02,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:03:02,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:03:02,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:03:02,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:03:02,398 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:03:02,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:03:02,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:03:02,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:03:02,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:03:02,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:03:02,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:03:02,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:03:02,402 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:03:02,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:03:02,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:03:02,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:03:02,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:03:02,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:03:02,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:03:02,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:03:02,404 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:03:02,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:03:02,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:03:02,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:03:02,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:03:02,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:03:02,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:03:02,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:03:02,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:03:02,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:03:02,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:03:02,406 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:03:02,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:03:02,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:03:02,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2022-07-21 11:03:02,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:03:02,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:03:02,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:03:02,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:03:02,739 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:03:02,740 INFO L432 ainManager$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--caif--caif_hsi.ko-entry_point.cil.out.i [2022-07-21 11:03:02,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fac22573/8fd57f2a0f894594a716238210596930/FLAG76408fc0e [2022-07-21 11:03:03,480 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:03:03,481 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--caif--caif_hsi.ko-entry_point.cil.out.i [2022-07-21 11:03:03,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fac22573/8fd57f2a0f894594a716238210596930/FLAG76408fc0e [2022-07-21 11:03:03,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fac22573/8fd57f2a0f894594a716238210596930 [2022-07-21 11:03:03,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:03:03,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:03:03,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:03:03,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:03:03,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:03:03,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:03:03" (1/1) ... [2022-07-21 11:03:03,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240a52ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:03, skipping insertion in model container [2022-07-21 11:03:03,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:03:03" (1/1) ... [2022-07-21 11:03:03,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:03:03,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:03:04,543 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--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2022-07-21 11:03:05,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:03:05,159 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:03:05,274 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--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2022-07-21 11:03:05,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:03:05,506 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:03:05,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05 WrapperNode [2022-07-21 11:03:05,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:03:05,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:03:05,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:03:05,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:03:05,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (1/1) ... [2022-07-21 11:03:05,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (1/1) ... [2022-07-21 11:03:05,738 INFO L137 Inliner]: procedures = 220, calls = 1799, calls flagged for inlining = 81, calls inlined = 72, statements flattened = 3230 [2022-07-21 11:03:05,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:03:05,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:03:05,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:03:05,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:03:05,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (1/1) ... [2022-07-21 11:03:05,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (1/1) ... [2022-07-21 11:03:05,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (1/1) ... [2022-07-21 11:03:05,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (1/1) ... [2022-07-21 11:03:05,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (1/1) ... [2022-07-21 11:03:05,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (1/1) ... [2022-07-21 11:03:05,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (1/1) ... [2022-07-21 11:03:05,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:03:05,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:03:05,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:03:05,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:03:05,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (1/1) ... [2022-07-21 11:03:05,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:03:05,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:03:05,936 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) [2022-07-21 11:03:05,948 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 [2022-07-21 11:03:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure nla_get_u32 [2022-07-21 11:03:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_get_u32 [2022-07-21 11:03:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_xmit [2022-07-21 11:03:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_xmit [2022-07-21 11:03:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:03:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:03:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:03:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:03:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure nla_put_u32 [2022-07-21 11:03:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_put_u32 [2022-07-21 11:03:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_start_tx [2022-07-21 11:03:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_start_tx [2022-07-21 11:03:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:03:05,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:03:05,978 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-07-21 11:03:05,978 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-07-21 11:03:05,978 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_bits [2022-07-21 11:03:05,978 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_bits [2022-07-21 11:03:05,978 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-21 11:03:05,978 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-21 11:03:05,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-21 11:03:05,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-21 11:03:05,979 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-07-21 11:03:05,979 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-07-21 11:03:05,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:03:05,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:03:05,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-07-21 11:03:05,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-07-21 11:03:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 11:03:05,980 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 11:03:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2022-07-21 11:03:05,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2022-07-21 11:03:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:03:05,980 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:03:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-21 11:03:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-21 11:03:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 11:03:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 11:03:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_fill_info [2022-07-21 11:03:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_fill_info [2022-07-21 11:03:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:03:05,982 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 11:03:05,982 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 11:03:05,982 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc [2022-07-21 11:03:05,982 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc [2022-07-21 11:03:05,982 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_update_aggregation_stats [2022-07-21 11:03:05,982 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_update_aggregation_stats [2022-07-21 11:03:05,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:03:05,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-21 11:03:05,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-21 11:03:05,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:03:05,983 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_frm [2022-07-21 11:03:05,983 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_frm [2022-07-21 11:03:05,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:03:05,983 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 11:03:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 11:03:05,984 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_dequeue [2022-07-21 11:03:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_dequeue [2022-07-21 11:03:05,984 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 11:03:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 11:03:05,984 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-07-21 11:03:05,984 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-07-21 11:03:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-21 11:03:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-21 11:03:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc_len [2022-07-21 11:03:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc_len [2022-07-21 11:03:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 11:03:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:03:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:03:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_queue_len [2022-07-21 11:03:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_queue_len [2022-07-21 11:03:05,986 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 11:03:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 11:03:05,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 11:03:05,986 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-07-21 11:03:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-07-21 11:03:05,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 11:03:05,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_21 [2022-07-21 11:03:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_21 [2022-07-21 11:03:05,987 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-21 11:03:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-21 11:03:05,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:03:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:03:05,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-21 11:03:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-21 11:03:05,988 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 11:03:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 11:03:05,988 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_get_size [2022-07-21 11:03:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_get_size [2022-07-21 11:03:05,988 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_netlink_parms [2022-07-21 11:03:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_netlink_parms [2022-07-21 11:03:05,988 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-07-21 11:03:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-07-21 11:03:05,989 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:03:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:03:05,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 11:03:05,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:03:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:03:05,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:03:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-07-21 11:03:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-07-21 11:03:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-21 11:03:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-21 11:03:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-07-21 11:03:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-07-21 11:03:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:03:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-07-21 11:03:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-07-21 11:03:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_changelink [2022-07-21 11:03:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_changelink [2022-07-21 11:03:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:03:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 11:03:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-07-21 11:03:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-07-21 11:03:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-21 11:03:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-21 11:03:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-07-21 11:03:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-07-21 11:03:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_open [2022-07-21 11:03:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_open [2022-07-21 11:03:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_done [2022-07-21 11:03:05,993 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_done [2022-07-21 11:03:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-21 11:03:05,993 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-21 11:03:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_is_locked [2022-07-21 11:03:05,993 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_is_locked [2022-07-21 11:03:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-07-21 11:03:05,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-07-21 11:03:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_can_send_aggregate [2022-07-21 11:03:05,994 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_can_send_aggregate [2022-07-21 11:03:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 11:03:05,994 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 11:03:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 11:03:05,994 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 11:03:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 11:03:06,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 11:03:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-07-21 11:03:06,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-07-21 11:03:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-21 11:03:06,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-21 11:03:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 11:03:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 11:03:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_newlink [2022-07-21 11:03:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_newlink [2022-07-21 11:03:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-07-21 11:03:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-07-21 11:03:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 11:03:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-07-21 11:03:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-07-21 11:03:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_close [2022-07-21 11:03:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_close [2022-07-21 11:03:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-07-21 11:03:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-07-21 11:03:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_abort_tx [2022-07-21 11:03:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_abort_tx [2022-07-21 11:03:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-07-21 11:03:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-07-21 11:03:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:03:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:03:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-21 11:03:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-21 11:03:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-07-21 11:03:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-07-21 11:03:06,598 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:03:06,600 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:03:07,086 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:03:08,936 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:03:08,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:03:08,948 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-21 11:03:08,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:03:08 BoogieIcfgContainer [2022-07-21 11:03:08,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:03:08,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:03:08,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:03:08,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:03:08,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:03:03" (1/3) ... [2022-07-21 11:03:08,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3252aa6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:03:08, skipping insertion in model container [2022-07-21 11:03:08,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:03:05" (2/3) ... [2022-07-21 11:03:08,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3252aa6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:03:08, skipping insertion in model container [2022-07-21 11:03:08,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:03:08" (3/3) ... [2022-07-21 11:03:08,957 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2022-07-21 11:03:08,969 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:03:08,969 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:03:09,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:03:09,048 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@221f973a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@581442ae [2022-07-21 11:03:09,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:03:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 1087 states, 758 states have (on average 1.3364116094986807) internal successors, (1013), 777 states have internal predecessors, (1013), 255 states have call successors, (255), 73 states have call predecessors, (255), 72 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) [2022-07-21 11:03:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 11:03:09,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:09,069 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, 1] [2022-07-21 11:03:09,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash 201705276, now seen corresponding path program 1 times [2022-07-21 11:03:09,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:09,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106867095] [2022-07-21 11:03:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:09,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:09,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 11:03:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:09,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106867095] [2022-07-21 11:03:09,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106867095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:09,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:09,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:03:09,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192631153] [2022-07-21 11:03:09,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:09,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:03:09,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:03:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:03:09,640 INFO L87 Difference]: Start difference. First operand has 1087 states, 758 states have (on average 1.3364116094986807) internal successors, (1013), 777 states have internal predecessors, (1013), 255 states have call successors, (255), 73 states have call predecessors, (255), 72 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-07-21 11:03:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:14,351 INFO L93 Difference]: Finished difference Result 3554 states and 5253 transitions. [2022-07-21 11:03:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 11:03:14,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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 39 [2022-07-21 11:03:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:14,391 INFO L225 Difference]: With dead ends: 3554 [2022-07-21 11:03:14,391 INFO L226 Difference]: Without dead ends: 2437 [2022-07-21 11:03:14,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:03:14,407 INFO L413 NwaCegarLoop]: 1850 mSDtfsCounter, 2075 mSDsluCounter, 4715 mSDsCounter, 0 mSdLazyCounter, 2622 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 6565 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 2622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:14,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2269 Valid, 6565 Invalid, 3351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [729 Valid, 2622 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-21 11:03:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2022-07-21 11:03:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2233. [2022-07-21 11:03:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 1564 states have (on average 1.3241687979539642) internal successors, (2071), 1597 states have internal predecessors, (2071), 518 states have call successors, (518), 141 states have call predecessors, (518), 150 states have return successors, (587), 523 states have call predecessors, (587), 517 states have call successors, (587) [2022-07-21 11:03:14,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 3176 transitions. [2022-07-21 11:03:14,596 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 3176 transitions. Word has length 39 [2022-07-21 11:03:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:14,597 INFO L495 AbstractCegarLoop]: Abstraction has 2233 states and 3176 transitions. [2022-07-21 11:03:14,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-07-21 11:03:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 3176 transitions. [2022-07-21 11:03:14,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 11:03:14,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:14,616 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-07-21 11:03:14,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 11:03:14,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:14,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:14,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2097784552, now seen corresponding path program 1 times [2022-07-21 11:03:14,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:14,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835943739] [2022-07-21 11:03:14,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:14,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:14,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:03:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:14,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:03:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:15,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:03:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:03:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:15,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:03:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 11:03:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:15,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 11:03:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 11:03:15,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835943739] [2022-07-21 11:03:15,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835943739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:15,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:15,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 11:03:15,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137663746] [2022-07-21 11:03:15,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:15,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 11:03:15,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 11:03:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:03:15,389 INFO L87 Difference]: Start difference. First operand 2233 states and 3176 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:03:21,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:03:27,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:27,012 INFO L93 Difference]: Finished difference Result 4862 states and 7173 transitions. [2022-07-21 11:03:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 11:03:27,013 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2022-07-21 11:03:27,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:27,029 INFO L225 Difference]: With dead ends: 4862 [2022-07-21 11:03:27,029 INFO L226 Difference]: Without dead ends: 2639 [2022-07-21 11:03:27,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2022-07-21 11:03:27,043 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 473 mSDsluCounter, 7919 mSDsCounter, 0 mSdLazyCounter, 7210 mSolverCounterSat, 330 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 9409 SdHoareTripleChecker+Invalid, 7541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 7210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:27,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 9409 Invalid, 7541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 7210 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-07-21 11:03:27,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2022-07-21 11:03:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2261. [2022-07-21 11:03:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1586 states have (on average 1.3209331651954603) internal successors, (2095), 1620 states have internal predecessors, (2095), 518 states have call successors, (518), 141 states have call predecessors, (518), 156 states have return successors, (612), 528 states have call predecessors, (612), 517 states have call successors, (612) [2022-07-21 11:03:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3225 transitions. [2022-07-21 11:03:27,163 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3225 transitions. Word has length 126 [2022-07-21 11:03:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:27,165 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 3225 transitions. [2022-07-21 11:03:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:03:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3225 transitions. [2022-07-21 11:03:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 11:03:27,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:27,195 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-07-21 11:03:27,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 11:03:27,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:27,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:27,196 INFO L85 PathProgramCache]: Analyzing trace with hash 885987727, now seen corresponding path program 1 times [2022-07-21 11:03:27,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:27,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906211212] [2022-07-21 11:03:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:27,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 11:03:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:03:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:03:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:03:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 11:03:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 11:03:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 11:03:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 11:03:27,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:27,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906211212] [2022-07-21 11:03:27,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906211212] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:03:27,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543187581] [2022-07-21 11:03:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:27,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:03:27,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:03:27,696 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) [2022-07-21 11:03:27,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 11:03:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:28,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:03:28,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:03:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 11:03:28,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:03:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 11:03:28,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543187581] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:03:28,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:03:28,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2022-07-21 11:03:28,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141879183] [2022-07-21 11:03:28,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:03:28,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 11:03:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 11:03:28,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:03:28,577 INFO L87 Difference]: Start difference. First operand 2261 states and 3225 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 11:03:32,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:32,885 INFO L93 Difference]: Finished difference Result 4966 states and 7355 transitions. [2022-07-21 11:03:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 11:03:32,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 130 [2022-07-21 11:03:32,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:32,903 INFO L225 Difference]: With dead ends: 4966 [2022-07-21 11:03:32,904 INFO L226 Difference]: Without dead ends: 2715 [2022-07-21 11:03:32,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:03:32,916 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 846 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:32,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 3733 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-21 11:03:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2022-07-21 11:03:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2333. [2022-07-21 11:03:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2333 states, 1650 states have (on average 1.312121212121212) internal successors, (2165), 1677 states have internal predecessors, (2165), 526 states have call successors, (526), 141 states have call predecessors, (526), 156 states have return successors, (639), 543 states have call predecessors, (639), 525 states have call successors, (639) [2022-07-21 11:03:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 3330 transitions. [2022-07-21 11:03:33,026 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 3330 transitions. Word has length 130 [2022-07-21 11:03:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:33,026 INFO L495 AbstractCegarLoop]: Abstraction has 2333 states and 3330 transitions. [2022-07-21 11:03:33,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 11:03:33,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 3330 transitions. [2022-07-21 11:03:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 11:03:33,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:33,033 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2022-07-21 11:03:33,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 11:03:33,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:03:33,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:33,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1600831573, now seen corresponding path program 1 times [2022-07-21 11:03:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:33,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911298302] [2022-07-21 11:03:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:33,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:03:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:03:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:03:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:03:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:03:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 11:03:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 11:03:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 11:03:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 11:03:33,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:33,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911298302] [2022-07-21 11:03:33,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911298302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:33,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:33,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 11:03:33,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841036600] [2022-07-21 11:03:33,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:33,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 11:03:33,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:33,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 11:03:33,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:03:33,845 INFO L87 Difference]: Start difference. First operand 2333 states and 3330 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:03:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:40,327 INFO L93 Difference]: Finished difference Result 5060 states and 7438 transitions. [2022-07-21 11:03:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:03:40,328 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2022-07-21 11:03:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:40,349 INFO L225 Difference]: With dead ends: 5060 [2022-07-21 11:03:40,350 INFO L226 Difference]: Without dead ends: 2737 [2022-07-21 11:03:40,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:03:40,366 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 817 mSDsluCounter, 6884 mSDsCounter, 0 mSdLazyCounter, 5901 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 8428 SdHoareTripleChecker+Invalid, 6534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 5901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:40,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 8428 Invalid, 6534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 5901 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-21 11:03:40,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2022-07-21 11:03:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2351. [2022-07-21 11:03:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 1666 states have (on average 1.3103241296518608) internal successors, (2183), 1693 states have internal predecessors, (2183), 526 states have call successors, (526), 141 states have call predecessors, (526), 158 states have return successors, (648), 545 states have call predecessors, (648), 525 states have call successors, (648) [2022-07-21 11:03:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 3357 transitions. [2022-07-21 11:03:40,525 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 3357 transitions. Word has length 133 [2022-07-21 11:03:40,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:40,525 INFO L495 AbstractCegarLoop]: Abstraction has 2351 states and 3357 transitions. [2022-07-21 11:03:40,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:03:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 3357 transitions. [2022-07-21 11:03:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 11:03:40,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:40,533 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:03:40,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 11:03:40,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1436537290, now seen corresponding path program 1 times [2022-07-21 11:03:40,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:40,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865401886] [2022-07-21 11:03:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 11:03:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:03:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 11:03:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:03:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:03:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 11:03:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 11:03:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:03:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:03:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:03:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:03:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 11:03:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 11:03:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 11:03:40,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:40,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865401886] [2022-07-21 11:03:40,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865401886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:40,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:40,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:03:40,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809532605] [2022-07-21 11:03:40,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:40,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:03:40,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:40,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:03:40,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:03:40,862 INFO L87 Difference]: Start difference. First operand 2351 states and 3357 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:03:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:45,889 INFO L93 Difference]: Finished difference Result 6763 states and 9755 transitions. [2022-07-21 11:03:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:03:45,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2022-07-21 11:03:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:45,917 INFO L225 Difference]: With dead ends: 6763 [2022-07-21 11:03:45,918 INFO L226 Difference]: Without dead ends: 4422 [2022-07-21 11:03:45,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:03:45,928 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 2182 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 1057 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 3612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1057 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:45,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2343 Valid, 4589 Invalid, 3612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1057 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-21 11:03:45,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-07-21 11:03:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 3858. [2022-07-21 11:03:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 2796 states have (on average 1.3204577968526467) internal successors, (3692), 2833 states have internal predecessors, (3692), 795 states have call successors, (795), 235 states have call predecessors, (795), 266 states have return successors, (991), 832 states have call predecessors, (991), 794 states have call successors, (991) [2022-07-21 11:03:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5478 transitions. [2022-07-21 11:03:46,165 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5478 transitions. Word has length 162 [2022-07-21 11:03:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:46,166 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 5478 transitions. [2022-07-21 11:03:46,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:03:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5478 transitions. [2022-07-21 11:03:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-21 11:03:46,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:46,175 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:03:46,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 11:03:46,175 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:46,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:46,176 INFO L85 PathProgramCache]: Analyzing trace with hash 716705549, now seen corresponding path program 1 times [2022-07-21 11:03:46,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:46,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789840040] [2022-07-21 11:03:46,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:46,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 11:03:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:03:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:03:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:03:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:03:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 11:03:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 11:03:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 11:03:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:03:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 11:03:46,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:46,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789840040] [2022-07-21 11:03:46,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789840040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:46,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:46,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:03:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452772198] [2022-07-21 11:03:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:46,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:03:46,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:03:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:03:46,575 INFO L87 Difference]: Start difference. First operand 3858 states and 5478 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 11:03:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:50,509 INFO L93 Difference]: Finished difference Result 8288 states and 12057 transitions. [2022-07-21 11:03:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 11:03:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 148 [2022-07-21 11:03:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:50,535 INFO L225 Difference]: With dead ends: 8288 [2022-07-21 11:03:50,536 INFO L226 Difference]: Without dead ends: 4440 [2022-07-21 11:03:50,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:03:50,552 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 518 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:50,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 3450 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-21 11:03:50,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2022-07-21 11:03:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 3882. [2022-07-21 11:03:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2816 states have (on average 1.3196022727272727) internal successors, (3716), 2853 states have internal predecessors, (3716), 799 states have call successors, (799), 235 states have call predecessors, (799), 266 states have return successors, (1005), 836 states have call predecessors, (1005), 798 states have call successors, (1005) [2022-07-21 11:03:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5520 transitions. [2022-07-21 11:03:50,823 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5520 transitions. Word has length 148 [2022-07-21 11:03:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:50,823 INFO L495 AbstractCegarLoop]: Abstraction has 3882 states and 5520 transitions. [2022-07-21 11:03:50,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 11:03:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5520 transitions. [2022-07-21 11:03:50,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-21 11:03:50,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:50,834 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:03:50,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 11:03:50,835 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:50,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:50,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1089362587, now seen corresponding path program 1 times [2022-07-21 11:03:50,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:50,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200063099] [2022-07-21 11:03:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:50,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:03:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:03:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:03:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:03:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:03:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:03:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:03:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:03:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:03:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:03:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:03:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:03:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 11:03:51,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:51,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200063099] [2022-07-21 11:03:51,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200063099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:51,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:51,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 11:03:51,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326483867] [2022-07-21 11:03:51,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:51,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 11:03:51,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:51,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 11:03:51,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:03:51,344 INFO L87 Difference]: Start difference. First operand 3882 states and 5520 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 11:04:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:00,579 INFO L93 Difference]: Finished difference Result 13448 states and 19801 transitions. [2022-07-21 11:04:00,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 11:04:00,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 163 [2022-07-21 11:04:00,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:00,622 INFO L225 Difference]: With dead ends: 13448 [2022-07-21 11:04:00,622 INFO L226 Difference]: Without dead ends: 9576 [2022-07-21 11:04:00,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-21 11:04:00,637 INFO L413 NwaCegarLoop]: 2136 mSDtfsCounter, 2880 mSDsluCounter, 4246 mSDsCounter, 0 mSdLazyCounter, 5856 mSolverCounterSat, 1537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3126 SdHoareTripleChecker+Valid, 6382 SdHoareTripleChecker+Invalid, 7393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1537 IncrementalHoareTripleChecker+Valid, 5856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:00,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3126 Valid, 6382 Invalid, 7393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1537 Valid, 5856 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-07-21 11:04:00,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9576 states. [2022-07-21 11:04:01,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9576 to 7988. [2022-07-21 11:04:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7988 states, 5793 states have (on average 1.3188330744001382) internal successors, (7640), 5889 states have internal predecessors, (7640), 1646 states have call successors, (1646), 461 states have call predecessors, (1646), 548 states have return successors, (2273), 1733 states have call predecessors, (2273), 1645 states have call successors, (2273) [2022-07-21 11:04:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7988 states to 7988 states and 11559 transitions. [2022-07-21 11:04:01,080 INFO L78 Accepts]: Start accepts. Automaton has 7988 states and 11559 transitions. Word has length 163 [2022-07-21 11:04:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:01,081 INFO L495 AbstractCegarLoop]: Abstraction has 7988 states and 11559 transitions. [2022-07-21 11:04:01,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 11:04:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7988 states and 11559 transitions. [2022-07-21 11:04:01,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-21 11:04:01,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:01,103 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:04:01,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 11:04:01,104 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:01,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:01,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1295827298, now seen corresponding path program 1 times [2022-07-21 11:04:01,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:01,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688669251] [2022-07-21 11:04:01,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:01,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:04:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:04:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:04:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:04:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 11:04:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:04:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:04:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:04:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:04:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 11:04:01,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:01,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688669251] [2022-07-21 11:04:01,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688669251] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:04:01,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104256402] [2022-07-21 11:04:01,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:01,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:04:01,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:04:01,778 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) [2022-07-21 11:04:01,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 11:04:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:02,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:04:02,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:04:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 11:04:02,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:04:02,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104256402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:02,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:04:02,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2022-07-21 11:04:02,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111686343] [2022-07-21 11:04:02,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:02,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:04:02,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:04:02,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:04:02,548 INFO L87 Difference]: Start difference. First operand 7988 states and 11559 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 11:04:02,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:02,855 INFO L93 Difference]: Finished difference Result 15974 states and 23222 transitions. [2022-07-21 11:04:02,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:04:02,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 178 [2022-07-21 11:04:02,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:02,886 INFO L225 Difference]: With dead ends: 15974 [2022-07-21 11:04:02,886 INFO L226 Difference]: Without dead ends: 7996 [2022-07-21 11:04:02,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:04:02,911 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 0 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:02,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2986 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:04:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2022-07-21 11:04:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 7996. [2022-07-21 11:04:03,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7996 states, 5801 states have (on average 1.3183933804516463) internal successors, (7648), 5897 states have internal predecessors, (7648), 1646 states have call successors, (1646), 461 states have call predecessors, (1646), 548 states have return successors, (2273), 1733 states have call predecessors, (2273), 1645 states have call successors, (2273) [2022-07-21 11:04:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 11567 transitions. [2022-07-21 11:04:03,276 INFO L78 Accepts]: Start accepts. Automaton has 7996 states and 11567 transitions. Word has length 178 [2022-07-21 11:04:03,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:03,276 INFO L495 AbstractCegarLoop]: Abstraction has 7996 states and 11567 transitions. [2022-07-21 11:04:03,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 11:04:03,276 INFO L276 IsEmpty]: Start isEmpty. Operand 7996 states and 11567 transitions. [2022-07-21 11:04:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-21 11:04:03,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:03,297 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:04:03,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 11:04:03,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 11:04:03,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:03,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1989772378, now seen corresponding path program 1 times [2022-07-21 11:04:03,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:03,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527061784] [2022-07-21 11:04:03,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:03,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:03,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:03,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:04:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:04:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:03,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:04:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 11:04:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:04:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 11:04:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:04:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:04:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 11:04:04,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:04,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527061784] [2022-07-21 11:04:04,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527061784] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:04:04,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667438607] [2022-07-21 11:04:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:04,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:04:04,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:04:04,125 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) [2022-07-21 11:04:04,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 11:04:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:04,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2911 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:04:04,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:04:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 11:04:04,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:04:04,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667438607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:04,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:04:04,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-07-21 11:04:04,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384282743] [2022-07-21 11:04:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:04,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:04:04,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:04:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-21 11:04:04,918 INFO L87 Difference]: Start difference. First operand 7996 states and 11567 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:04:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:05,252 INFO L93 Difference]: Finished difference Result 16086 states and 23336 transitions. [2022-07-21 11:04:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 11:04:05,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 173 [2022-07-21 11:04:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:05,336 INFO L225 Difference]: With dead ends: 16086 [2022-07-21 11:04:05,337 INFO L226 Difference]: Without dead ends: 8100 [2022-07-21 11:04:05,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-21 11:04:05,355 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 21 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:05,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4496 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:04:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2022-07-21 11:04:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 8012. [2022-07-21 11:04:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8012 states, 5817 states have (on average 1.3175176207667183) internal successors, (7664), 5913 states have internal predecessors, (7664), 1646 states have call successors, (1646), 461 states have call predecessors, (1646), 548 states have return successors, (2273), 1733 states have call predecessors, (2273), 1645 states have call successors, (2273) [2022-07-21 11:04:05,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8012 states to 8012 states and 11583 transitions. [2022-07-21 11:04:05,678 INFO L78 Accepts]: Start accepts. Automaton has 8012 states and 11583 transitions. Word has length 173 [2022-07-21 11:04:05,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:05,679 INFO L495 AbstractCegarLoop]: Abstraction has 8012 states and 11583 transitions. [2022-07-21 11:04:05,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:04:05,679 INFO L276 IsEmpty]: Start isEmpty. Operand 8012 states and 11583 transitions. [2022-07-21 11:04:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 11:04:05,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:05,699 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:04:05,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 11:04:05,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:04:05,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1173929567, now seen corresponding path program 1 times [2022-07-21 11:04:05,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:05,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683715746] [2022-07-21 11:04:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:05,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:04:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:04:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:04:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:04:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:04:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:04:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:04:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 11:04:06,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:06,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683715746] [2022-07-21 11:04:06,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683715746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:06,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:04:06,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 11:04:06,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908157941] [2022-07-21 11:04:06,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:06,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 11:04:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:06,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 11:04:06,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:04:06,458 INFO L87 Difference]: Start difference. First operand 8012 states and 11583 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 6 states have internal predecessors, (104), 4 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-21 11:04:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:17,997 INFO L93 Difference]: Finished difference Result 17306 states and 25386 transitions. [2022-07-21 11:04:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 11:04:17,998 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 6 states have internal predecessors, (104), 4 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2022-07-21 11:04:17,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:18,031 INFO L225 Difference]: With dead ends: 17306 [2022-07-21 11:04:18,031 INFO L226 Difference]: Without dead ends: 9304 [2022-07-21 11:04:18,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-07-21 11:04:18,053 INFO L413 NwaCegarLoop]: 2076 mSDtfsCounter, 3375 mSDsluCounter, 6807 mSDsCounter, 0 mSdLazyCounter, 8610 mSolverCounterSat, 2043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3597 SdHoareTripleChecker+Valid, 8883 SdHoareTripleChecker+Invalid, 10653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2043 IncrementalHoareTripleChecker+Valid, 8610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:18,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3597 Valid, 8883 Invalid, 10653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2043 Valid, 8610 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-07-21 11:04:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2022-07-21 11:04:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 8116. [2022-07-21 11:04:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8116 states, 5905 states have (on average 1.3182049110922947) internal successors, (7784), 5993 states have internal predecessors, (7784), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 556 states have return successors, (2313), 1757 states have call predecessors, (2313), 1653 states have call successors, (2313) [2022-07-21 11:04:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8116 states to 8116 states and 11751 transitions. [2022-07-21 11:04:18,403 INFO L78 Accepts]: Start accepts. Automaton has 8116 states and 11751 transitions. Word has length 154 [2022-07-21 11:04:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:18,403 INFO L495 AbstractCegarLoop]: Abstraction has 8116 states and 11751 transitions. [2022-07-21 11:04:18,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 6 states have internal predecessors, (104), 4 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-21 11:04:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 8116 states and 11751 transitions. [2022-07-21 11:04:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-21 11:04:18,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:18,423 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:04:18,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 11:04:18,424 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:18,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:18,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1474577627, now seen corresponding path program 1 times [2022-07-21 11:04:18,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:18,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664451227] [2022-07-21 11:04:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:18,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:04:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:04:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:04:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 11:04:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:04:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:04:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:04:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-21 11:04:18,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:18,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664451227] [2022-07-21 11:04:18,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664451227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:18,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:04:18,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 11:04:18,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634564140] [2022-07-21 11:04:18,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:18,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 11:04:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 11:04:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:04:18,958 INFO L87 Difference]: Start difference. First operand 8116 states and 11751 transitions. Second operand has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 9 states have internal predecessors, (121), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 11:04:32,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:32,071 INFO L93 Difference]: Finished difference Result 17054 states and 25433 transitions. [2022-07-21 11:04:32,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 11:04:32,071 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 9 states have internal predecessors, (121), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) Word has length 177 [2022-07-21 11:04:32,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:32,109 INFO L225 Difference]: With dead ends: 17054 [2022-07-21 11:04:32,109 INFO L226 Difference]: Without dead ends: 8948 [2022-07-21 11:04:32,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 11:04:32,137 INFO L413 NwaCegarLoop]: 2110 mSDtfsCounter, 3185 mSDsluCounter, 13771 mSDsCounter, 0 mSdLazyCounter, 14618 mSolverCounterSat, 1998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3408 SdHoareTripleChecker+Valid, 15881 SdHoareTripleChecker+Invalid, 16616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1998 IncrementalHoareTripleChecker+Valid, 14618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:32,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3408 Valid, 15881 Invalid, 16616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1998 Valid, 14618 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-07-21 11:04:32,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8948 states. [2022-07-21 11:04:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8948 to 8122. [2022-07-21 11:04:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8122 states, 5913 states have (on average 1.3164214442753255) internal successors, (7784), 5993 states have internal predecessors, (7784), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 554 states have return successors, (2297), 1763 states have call predecessors, (2297), 1653 states have call successors, (2297) [2022-07-21 11:04:32,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8122 states to 8122 states and 11735 transitions. [2022-07-21 11:04:32,530 INFO L78 Accepts]: Start accepts. Automaton has 8122 states and 11735 transitions. Word has length 177 [2022-07-21 11:04:32,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:32,530 INFO L495 AbstractCegarLoop]: Abstraction has 8122 states and 11735 transitions. [2022-07-21 11:04:32,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 9 states have internal predecessors, (121), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 11:04:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 8122 states and 11735 transitions. [2022-07-21 11:04:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-21 11:04:32,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:32,550 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:04:32,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 11:04:32,551 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:32,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:32,551 INFO L85 PathProgramCache]: Analyzing trace with hash -813611710, now seen corresponding path program 1 times [2022-07-21 11:04:32,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:32,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516032277] [2022-07-21 11:04:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:32,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:04:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:04:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:04:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 11:04:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:04:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:04:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:04:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:33,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-21 11:04:33,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:33,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516032277] [2022-07-21 11:04:33,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516032277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:33,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:04:33,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 11:04:33,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578068467] [2022-07-21 11:04:33,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:33,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 11:04:33,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:33,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 11:04:33,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:04:33,080 INFO L87 Difference]: Start difference. First operand 8122 states and 11735 transitions. Second operand has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 8 states have internal predecessors, (116), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:04:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:45,495 INFO L93 Difference]: Finished difference Result 17116 states and 25130 transitions. [2022-07-21 11:04:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-21 11:04:45,495 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 8 states have internal predecessors, (116), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) Word has length 170 [2022-07-21 11:04:45,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:45,532 INFO L225 Difference]: With dead ends: 17116 [2022-07-21 11:04:45,532 INFO L226 Difference]: Without dead ends: 9004 [2022-07-21 11:04:45,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=330, Invalid=1476, Unknown=0, NotChecked=0, Total=1806 [2022-07-21 11:04:45,558 INFO L413 NwaCegarLoop]: 2060 mSDtfsCounter, 2195 mSDsluCounter, 11712 mSDsCounter, 0 mSdLazyCounter, 13803 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 13772 SdHoareTripleChecker+Invalid, 14703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 13803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:45,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2413 Valid, 13772 Invalid, 14703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 13803 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-07-21 11:04:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9004 states. [2022-07-21 11:04:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9004 to 8130. [2022-07-21 11:04:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8130 states, 5913 states have (on average 1.3157449687130052) internal successors, (7780), 6005 states have internal predecessors, (7780), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 562 states have return successors, (2355), 1759 states have call predecessors, (2355), 1653 states have call successors, (2355) [2022-07-21 11:04:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8130 states to 8130 states and 11789 transitions. [2022-07-21 11:04:46,031 INFO L78 Accepts]: Start accepts. Automaton has 8130 states and 11789 transitions. Word has length 170 [2022-07-21 11:04:46,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:46,033 INFO L495 AbstractCegarLoop]: Abstraction has 8130 states and 11789 transitions. [2022-07-21 11:04:46,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 8 states have internal predecessors, (116), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:04:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 8130 states and 11789 transitions. [2022-07-21 11:04:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-21 11:04:46,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:46,047 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-21 11:04:46,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 11:04:46,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1263626668, now seen corresponding path program 1 times [2022-07-21 11:04:46,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:46,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327265785] [2022-07-21 11:04:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:46,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:04:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:04:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:04:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:04:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 11:04:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:04:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:04:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 11:04:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 11:04:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-21 11:04:46,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:46,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327265785] [2022-07-21 11:04:46,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327265785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:46,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:04:46,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 11:04:46,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847276052] [2022-07-21 11:04:46,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:46,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 11:04:46,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:46,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 11:04:46,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:04:46,517 INFO L87 Difference]: Start difference. First operand 8130 states and 11789 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:04:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:50,875 INFO L93 Difference]: Finished difference Result 16940 states and 25046 transitions. [2022-07-21 11:04:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:04:50,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 182 [2022-07-21 11:04:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:50,917 INFO L225 Difference]: With dead ends: 16940 [2022-07-21 11:04:50,917 INFO L226 Difference]: Without dead ends: 8820 [2022-07-21 11:04:50,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:04:50,940 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 783 mSDsluCounter, 4039 mSDsCounter, 0 mSdLazyCounter, 3475 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 5571 SdHoareTripleChecker+Invalid, 4107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 3475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:50,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 5571 Invalid, 4107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 3475 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-21 11:04:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8820 states. [2022-07-21 11:04:51,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8820 to 8178. [2022-07-21 11:04:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8178 states, 5949 states have (on average 1.31450663977139) internal successors, (7820), 6045 states have internal predecessors, (7820), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 574 states have return successors, (2391), 1767 states have call predecessors, (2391), 1653 states have call successors, (2391) [2022-07-21 11:04:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 11865 transitions. [2022-07-21 11:04:51,433 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 11865 transitions. Word has length 182 [2022-07-21 11:04:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:51,433 INFO L495 AbstractCegarLoop]: Abstraction has 8178 states and 11865 transitions. [2022-07-21 11:04:51,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:04:51,434 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 11865 transitions. [2022-07-21 11:04:51,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 11:04:51,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:51,449 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:04:51,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 11:04:51,449 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash -866342615, now seen corresponding path program 1 times [2022-07-21 11:04:51,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:51,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220401016] [2022-07-21 11:04:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:51,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:04:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:04:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:04:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:04:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:04:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:04:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 11:04:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:04:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:04:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:04:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:04:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-21 11:04:51,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:51,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220401016] [2022-07-21 11:04:51,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220401016] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:04:51,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766376191] [2022-07-21 11:04:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:51,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:04:51,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:04:51,971 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) [2022-07-21 11:04:51,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 11:04:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:52,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 3102 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:04:52,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:04:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 11:04:52,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:04:52,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766376191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:52,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:04:52,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-21 11:04:52,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416047464] [2022-07-21 11:04:52,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:52,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:04:52,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:52,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:04:52,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:04:52,850 INFO L87 Difference]: Start difference. First operand 8178 states and 11865 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-21 11:04:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:53,219 INFO L93 Difference]: Finished difference Result 16450 states and 23932 transitions. [2022-07-21 11:04:53,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 11:04:53,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 202 [2022-07-21 11:04:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:53,255 INFO L225 Difference]: With dead ends: 16450 [2022-07-21 11:04:53,255 INFO L226 Difference]: Without dead ends: 8282 [2022-07-21 11:04:53,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:04:53,275 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 21 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:53,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4496 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:04:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8282 states. [2022-07-21 11:04:53,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8282 to 8178. [2022-07-21 11:04:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8178 states, 5949 states have (on average 1.31450663977139) internal successors, (7820), 6045 states have internal predecessors, (7820), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 574 states have return successors, (2391), 1767 states have call predecessors, (2391), 1653 states have call successors, (2391) [2022-07-21 11:04:53,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 11865 transitions. [2022-07-21 11:04:53,671 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 11865 transitions. Word has length 202 [2022-07-21 11:04:53,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:53,671 INFO L495 AbstractCegarLoop]: Abstraction has 8178 states and 11865 transitions. [2022-07-21 11:04:53,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-21 11:04:53,672 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 11865 transitions. [2022-07-21 11:04:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-21 11:04:53,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:53,686 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:04:53,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 11:04:53,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:04:53,899 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:53,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash -876951166, now seen corresponding path program 1 times [2022-07-21 11:04:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:53,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560289077] [2022-07-21 11:04:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:04:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:04:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:04:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:04:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:04:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:04:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 11:04:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:04:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:04:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:04:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:04:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:04:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-21 11:04:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:54,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560289077] [2022-07-21 11:04:54,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560289077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:54,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:04:54,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 11:04:54,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983182332] [2022-07-21 11:04:54,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:54,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 11:04:54,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:54,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 11:04:54,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:04:54,429 INFO L87 Difference]: Start difference. First operand 8178 states and 11865 transitions. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 5 states have internal predecessors, (124), 3 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 11:05:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:05:06,352 INFO L93 Difference]: Finished difference Result 17968 states and 27325 transitions. [2022-07-21 11:05:06,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 11:05:06,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 5 states have internal predecessors, (124), 3 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 182 [2022-07-21 11:05:06,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:05:06,389 INFO L225 Difference]: With dead ends: 17968 [2022-07-21 11:05:06,389 INFO L226 Difference]: Without dead ends: 9800 [2022-07-21 11:05:06,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2022-07-21 11:05:06,417 INFO L413 NwaCegarLoop]: 2204 mSDtfsCounter, 2860 mSDsluCounter, 8660 mSDsCounter, 0 mSdLazyCounter, 9811 mSolverCounterSat, 1662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3141 SdHoareTripleChecker+Valid, 10864 SdHoareTripleChecker+Invalid, 11473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1662 IncrementalHoareTripleChecker+Valid, 9811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:05:06,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3141 Valid, 10864 Invalid, 11473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1662 Valid, 9811 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-07-21 11:05:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2022-07-21 11:05:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 8118. [2022-07-21 11:05:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 5889 states have (on average 1.3129563593139753) internal successors, (7732), 5985 states have internal predecessors, (7732), 1658 states have call successors, (1658), 461 states have call predecessors, (1658), 570 states have return successors, (2301), 1767 states have call predecessors, (2301), 1657 states have call successors, (2301) [2022-07-21 11:05:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 11691 transitions. [2022-07-21 11:05:06,834 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 11691 transitions. Word has length 182 [2022-07-21 11:05:06,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:05:06,834 INFO L495 AbstractCegarLoop]: Abstraction has 8118 states and 11691 transitions. [2022-07-21 11:05:06,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 5 states have internal predecessors, (124), 3 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 11:05:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 11691 transitions. [2022-07-21 11:05:06,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-21 11:05:06,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:05:06,848 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:05:06,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 11:05:06,849 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:05:06,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:05:06,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1197534570, now seen corresponding path program 1 times [2022-07-21 11:05:06,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:05:06,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199397326] [2022-07-21 11:05:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:06,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:05:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:05:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:05:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:05:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:05:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:05:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:05:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:05:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 11:05:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 11:05:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 11:05:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:05:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:05:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:05:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 11:05:07,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:05:07,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199397326] [2022-07-21 11:05:07,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199397326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:05:07,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:05:07,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 11:05:07,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711458264] [2022-07-21 11:05:07,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:05:07,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 11:05:07,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:05:07,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 11:05:07,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:05:07,296 INFO L87 Difference]: Start difference. First operand 8118 states and 11691 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 11:05:14,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:05:14,276 INFO L93 Difference]: Finished difference Result 17916 states and 26412 transitions. [2022-07-21 11:05:14,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 11:05:14,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 178 [2022-07-21 11:05:14,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:05:14,324 INFO L225 Difference]: With dead ends: 17916 [2022-07-21 11:05:14,324 INFO L226 Difference]: Without dead ends: 9808 [2022-07-21 11:05:14,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-21 11:05:14,354 INFO L413 NwaCegarLoop]: 2242 mSDtfsCounter, 2832 mSDsluCounter, 4198 mSDsCounter, 0 mSdLazyCounter, 5628 mSolverCounterSat, 1686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3117 SdHoareTripleChecker+Valid, 6440 SdHoareTripleChecker+Invalid, 7314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1686 IncrementalHoareTripleChecker+Valid, 5628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:05:14,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3117 Valid, 6440 Invalid, 7314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1686 Valid, 5628 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-21 11:05:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9808 states. [2022-07-21 11:05:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9808 to 8126. [2022-07-21 11:05:14,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8126 states, 5897 states have (on average 1.3125317958283873) internal successors, (7740), 5993 states have internal predecessors, (7740), 1658 states have call successors, (1658), 461 states have call predecessors, (1658), 570 states have return successors, (2301), 1767 states have call predecessors, (2301), 1657 states have call successors, (2301) [2022-07-21 11:05:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8126 states to 8126 states and 11699 transitions. [2022-07-21 11:05:14,814 INFO L78 Accepts]: Start accepts. Automaton has 8126 states and 11699 transitions. Word has length 178 [2022-07-21 11:05:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:05:14,814 INFO L495 AbstractCegarLoop]: Abstraction has 8126 states and 11699 transitions. [2022-07-21 11:05:14,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 11:05:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand 8126 states and 11699 transitions. [2022-07-21 11:05:14,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-21 11:05:14,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:05:14,828 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:05:14,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 11:05:14,828 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:05:14,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:05:14,829 INFO L85 PathProgramCache]: Analyzing trace with hash -160267549, now seen corresponding path program 1 times [2022-07-21 11:05:14,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:05:14,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064711818] [2022-07-21 11:05:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:14,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:05:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:14,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:14,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:14,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:05:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:05:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:05:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:05:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:05:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:05:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:05:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:05:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 11:05:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:05:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:05:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:05:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:05:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:05:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 11:05:15,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:05:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064711818] [2022-07-21 11:05:15,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064711818] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:05:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082325800] [2022-07-21 11:05:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:15,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:05:15,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:05:15,332 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) [2022-07-21 11:05:15,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 11:05:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:16,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:05:16,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:05:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-21 11:05:16,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:05:16,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082325800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:05:16,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:05:16,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-07-21 11:05:16,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357716971] [2022-07-21 11:05:16,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:05:16,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:05:16,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:05:16,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:05:16,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-07-21 11:05:16,258 INFO L87 Difference]: Start difference. First operand 8126 states and 11699 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-21 11:05:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:05:16,527 INFO L93 Difference]: Finished difference Result 16370 states and 23644 transitions. [2022-07-21 11:05:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:05:16,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) Word has length 189 [2022-07-21 11:05:16,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:05:16,557 INFO L225 Difference]: With dead ends: 16370 [2022-07-21 11:05:16,557 INFO L226 Difference]: Without dead ends: 8254 [2022-07-21 11:05:16,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-07-21 11:05:16,578 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 10 mSDsluCounter, 4504 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6012 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:05:16,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6012 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:05:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2022-07-21 11:05:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8166. [2022-07-21 11:05:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8166 states, 5925 states have (on average 1.311054852320675) internal successors, (7768), 6025 states have internal predecessors, (7768), 1658 states have call successors, (1658), 461 states have call predecessors, (1658), 582 states have return successors, (2333), 1775 states have call predecessors, (2333), 1657 states have call successors, (2333) [2022-07-21 11:05:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8166 states to 8166 states and 11759 transitions. [2022-07-21 11:05:16,962 INFO L78 Accepts]: Start accepts. Automaton has 8166 states and 11759 transitions. Word has length 189 [2022-07-21 11:05:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:05:16,963 INFO L495 AbstractCegarLoop]: Abstraction has 8166 states and 11759 transitions. [2022-07-21 11:05:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-21 11:05:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 8166 states and 11759 transitions. [2022-07-21 11:05:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-21 11:05:16,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:05:16,972 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:05:16,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-21 11:05:17,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 11:05:17,172 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:05:17,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:05:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1257364859, now seen corresponding path program 1 times [2022-07-21 11:05:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:05:17,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998082030] [2022-07-21 11:05:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:05:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:05:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:05:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:05:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 11:05:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:05:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:05:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:05:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:05:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:05:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 11:05:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 11:05:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 11:05:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:05:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:05:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:05:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-21 11:05:17,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:05:17,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998082030] [2022-07-21 11:05:17,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998082030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:05:17,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:05:17,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 11:05:17,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784448614] [2022-07-21 11:05:17,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:05:17,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 11:05:17,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:05:17,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 11:05:17,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:05:17,685 INFO L87 Difference]: Start difference. First operand 8166 states and 11759 transitions. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (24), 8 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 11:05:25,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:05:25,674 INFO L93 Difference]: Finished difference Result 18188 states and 26835 transitions. [2022-07-21 11:05:25,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:05:25,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (24), 8 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 205 [2022-07-21 11:05:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:05:25,711 INFO L225 Difference]: With dead ends: 18188 [2022-07-21 11:05:25,711 INFO L226 Difference]: Without dead ends: 10032 [2022-07-21 11:05:25,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:05:25,734 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 664 mSDsluCounter, 5260 mSDsCounter, 0 mSdLazyCounter, 6431 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 6837 SdHoareTripleChecker+Invalid, 6815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 6431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:05:25,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 6837 Invalid, 6815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 6431 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-21 11:05:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2022-07-21 11:05:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 8242. [2022-07-21 11:05:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8242 states, 5981 states have (on average 1.3088112355793347) internal successors, (7828), 6085 states have internal predecessors, (7828), 1666 states have call successors, (1666), 461 states have call predecessors, (1666), 594 states have return successors, (2363), 1791 states have call predecessors, (2363), 1665 states have call successors, (2363) [2022-07-21 11:05:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8242 states to 8242 states and 11857 transitions. [2022-07-21 11:05:26,064 INFO L78 Accepts]: Start accepts. Automaton has 8242 states and 11857 transitions. Word has length 205 [2022-07-21 11:05:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:05:26,064 INFO L495 AbstractCegarLoop]: Abstraction has 8242 states and 11857 transitions. [2022-07-21 11:05:26,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (24), 8 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 11:05:26,065 INFO L276 IsEmpty]: Start isEmpty. Operand 8242 states and 11857 transitions. [2022-07-21 11:05:26,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 11:05:26,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:05:26,076 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:05:26,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 11:05:26,076 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:05:26,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:05:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 404386923, now seen corresponding path program 1 times [2022-07-21 11:05:26,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:05:26,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798460329] [2022-07-21 11:05:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:05:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:05:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:05:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:05:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:05:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:05:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 11:05:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 11:05:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:05:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 11:05:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 11:05:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 11:05:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-21 11:05:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:05:26,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798460329] [2022-07-21 11:05:26,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798460329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:05:26,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:05:26,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:05:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343382032] [2022-07-21 11:05:26,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:05:26,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:05:26,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:05:26,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:05:26,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:05:26,433 INFO L87 Difference]: Start difference. First operand 8242 states and 11857 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:05:29,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:05:29,082 INFO L93 Difference]: Finished difference Result 17076 states and 25047 transitions. [2022-07-21 11:05:29,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:05:29,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 190 [2022-07-21 11:05:29,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:05:29,112 INFO L225 Difference]: With dead ends: 17076 [2022-07-21 11:05:29,112 INFO L226 Difference]: Without dead ends: 8844 [2022-07-21 11:05:29,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:05:29,134 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 799 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 2118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:05:29,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 3182 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 11:05:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8844 states. [2022-07-21 11:05:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8844 to 8250. [2022-07-21 11:05:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8250 states, 5989 states have (on average 1.308398731006846) internal successors, (7836), 6093 states have internal predecessors, (7836), 1666 states have call successors, (1666), 461 states have call predecessors, (1666), 594 states have return successors, (2363), 1791 states have call predecessors, (2363), 1665 states have call successors, (2363) [2022-07-21 11:05:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8250 states to 8250 states and 11865 transitions. [2022-07-21 11:05:29,436 INFO L78 Accepts]: Start accepts. Automaton has 8250 states and 11865 transitions. Word has length 190 [2022-07-21 11:05:29,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:05:29,436 INFO L495 AbstractCegarLoop]: Abstraction has 8250 states and 11865 transitions. [2022-07-21 11:05:29,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:05:29,436 INFO L276 IsEmpty]: Start isEmpty. Operand 8250 states and 11865 transitions. [2022-07-21 11:05:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-21 11:05:29,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:05:29,448 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:05:29,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 11:05:29,449 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:05:29,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:05:29,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1097035060, now seen corresponding path program 1 times [2022-07-21 11:05:29,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:05:29,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752702333] [2022-07-21 11:05:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:29,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:05:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:05:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:05:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:05:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 11:05:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:05:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:05:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:05:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:05:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:05:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 11:05:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 11:05:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 11:05:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:05:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:05:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:05:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-21 11:05:29,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:05:29,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752702333] [2022-07-21 11:05:29,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752702333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:05:29,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:05:29,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 11:05:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800769053] [2022-07-21 11:05:29,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:05:29,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 11:05:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:05:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 11:05:29,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:05:29,957 INFO L87 Difference]: Start difference. First operand 8250 states and 11865 transitions. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-21 11:05:37,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:05:37,449 INFO L93 Difference]: Finished difference Result 18340 states and 27029 transitions. [2022-07-21 11:05:37,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 11:05:37,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 1 states have call successors, (23) Word has length 206 [2022-07-21 11:05:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:05:37,488 INFO L225 Difference]: With dead ends: 18340 [2022-07-21 11:05:37,488 INFO L226 Difference]: Without dead ends: 10100 [2022-07-21 11:05:37,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-07-21 11:05:37,512 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 984 mSDsluCounter, 5574 mSDsCounter, 0 mSdLazyCounter, 6134 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 6859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 6134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:05:37,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 7145 Invalid, 6859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 6134 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-07-21 11:05:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10100 states. [2022-07-21 11:05:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10100 to 8266. [2022-07-21 11:05:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 6005 states have (on average 1.3075770191507077) internal successors, (7852), 6101 states have internal predecessors, (7852), 1666 states have call successors, (1666), 461 states have call predecessors, (1666), 594 states have return successors, (2363), 1799 states have call predecessors, (2363), 1665 states have call successors, (2363) [2022-07-21 11:05:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11881 transitions. [2022-07-21 11:05:37,837 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11881 transitions. Word has length 206 [2022-07-21 11:05:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:05:37,838 INFO L495 AbstractCegarLoop]: Abstraction has 8266 states and 11881 transitions. [2022-07-21 11:05:37,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-21 11:05:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11881 transitions. [2022-07-21 11:05:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-21 11:05:37,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:05:37,850 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-21 11:05:37,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 11:05:37,850 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:05:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:05:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash 359819377, now seen corresponding path program 1 times [2022-07-21 11:05:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:05:37,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369761667] [2022-07-21 11:05:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:37,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:05:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:05:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:05:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:05:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:05:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:05:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 11:05:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 11:05:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:05:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 11:05:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 11:05:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:05:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-21 11:05:38,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:05:38,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369761667] [2022-07-21 11:05:38,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369761667] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:05:38,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365853611] [2022-07-21 11:05:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:38,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:05:38,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:05:38,280 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) [2022-07-21 11:05:38,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 11:05:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:39,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 2845 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:05:39,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:05:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-21 11:05:39,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:05:39,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365853611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:05:39,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:05:39,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 11:05:39,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614896082] [2022-07-21 11:05:39,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:05:39,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:05:39,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:05:39,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:05:39,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:05:39,272 INFO L87 Difference]: Start difference. First operand 8266 states and 11881 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 11:05:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:05:39,548 INFO L93 Difference]: Finished difference Result 16718 states and 24254 transitions. [2022-07-21 11:05:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:05:39,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 191 [2022-07-21 11:05:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:05:39,576 INFO L225 Difference]: With dead ends: 16718 [2022-07-21 11:05:39,576 INFO L226 Difference]: Without dead ends: 8462 [2022-07-21 11:05:39,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:05:39,598 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 13 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:05:39,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3032 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:05:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8462 states. [2022-07-21 11:05:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8462 to 8270. [2022-07-21 11:05:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8270 states, 6009 states have (on average 1.3067066067565318) internal successors, (7852), 6101 states have internal predecessors, (7852), 1666 states have call successors, (1666), 461 states have call predecessors, (1666), 594 states have return successors, (2363), 1799 states have call predecessors, (2363), 1665 states have call successors, (2363) [2022-07-21 11:05:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8270 states to 8270 states and 11881 transitions. [2022-07-21 11:05:39,901 INFO L78 Accepts]: Start accepts. Automaton has 8270 states and 11881 transitions. Word has length 191 [2022-07-21 11:05:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:05:39,901 INFO L495 AbstractCegarLoop]: Abstraction has 8270 states and 11881 transitions. [2022-07-21 11:05:39,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 11:05:39,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8270 states and 11881 transitions. [2022-07-21 11:05:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-21 11:05:39,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:05:39,916 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:05:39,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 11:05:40,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:05:40,132 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:05:40,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:05:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash -320285187, now seen corresponding path program 1 times [2022-07-21 11:05:40,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:05:40,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878831366] [2022-07-21 11:05:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:40,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:05:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:05:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:05:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:05:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:05:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:05:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:05:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:05:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:05:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:05:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:05:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 11:05:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:05:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:05:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:05:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:05:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:05:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 11:05:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-21 11:05:40,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:05:40,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878831366] [2022-07-21 11:05:40,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878831366] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:05:40,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084125872] [2022-07-21 11:05:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:40,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:05:40,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:05:40,645 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) [2022-07-21 11:05:40,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 11:05:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:41,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-21 11:05:41,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:05:41,736 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-21 11:05:41,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:05:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-21 11:05:42,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084125872] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:05:42,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:05:42,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 6] total 22 [2022-07-21 11:05:42,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732101170] [2022-07-21 11:05:42,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:05:42,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 11:05:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:05:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 11:05:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-07-21 11:05:42,147 INFO L87 Difference]: Start difference. First operand 8270 states and 11881 transitions. Second operand has 22 states, 18 states have (on average 12.166666666666666) internal successors, (219), 13 states have internal predecessors, (219), 6 states have call successors, (60), 7 states have call predecessors, (60), 4 states have return successors, (49), 6 states have call predecessors, (49), 6 states have call successors, (49) [2022-07-21 11:05:46,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:05:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:05:55,202 INFO L93 Difference]: Finished difference Result 18892 states and 27983 transitions. [2022-07-21 11:05:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 11:05:55,203 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 12.166666666666666) internal successors, (219), 13 states have internal predecessors, (219), 6 states have call successors, (60), 7 states have call predecessors, (60), 4 states have return successors, (49), 6 states have call predecessors, (49), 6 states have call successors, (49) Word has length 218 [2022-07-21 11:05:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:05:55,243 INFO L225 Difference]: With dead ends: 18892 [2022-07-21 11:05:55,243 INFO L226 Difference]: Without dead ends: 10632 [2022-07-21 11:05:55,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-07-21 11:05:55,262 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1438 mSDsluCounter, 14984 mSDsCounter, 0 mSdLazyCounter, 13889 mSolverCounterSat, 856 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 16614 SdHoareTripleChecker+Invalid, 14746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 13889 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:05:55,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 16614 Invalid, 14746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [856 Valid, 13889 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2022-07-21 11:05:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10632 states. [2022-07-21 11:05:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10632 to 8314. [2022-07-21 11:05:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8314 states, 6039 states have (on average 1.3025335320417288) internal successors, (7866), 6137 states have internal predecessors, (7866), 1674 states have call successors, (1674), 461 states have call predecessors, (1674), 600 states have return successors, (2389), 1807 states have call predecessors, (2389), 1673 states have call successors, (2389) [2022-07-21 11:05:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8314 states to 8314 states and 11929 transitions. [2022-07-21 11:05:55,622 INFO L78 Accepts]: Start accepts. Automaton has 8314 states and 11929 transitions. Word has length 218 [2022-07-21 11:05:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:05:55,623 INFO L495 AbstractCegarLoop]: Abstraction has 8314 states and 11929 transitions. [2022-07-21 11:05:55,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 12.166666666666666) internal successors, (219), 13 states have internal predecessors, (219), 6 states have call successors, (60), 7 states have call predecessors, (60), 4 states have return successors, (49), 6 states have call predecessors, (49), 6 states have call successors, (49) [2022-07-21 11:05:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 8314 states and 11929 transitions. [2022-07-21 11:05:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-21 11:05:55,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:05:55,634 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:05:55,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 11:05:55,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:05:55,835 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:05:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:05:55,835 INFO L85 PathProgramCache]: Analyzing trace with hash -687351431, now seen corresponding path program 1 times [2022-07-21 11:05:55,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:05:55,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798919994] [2022-07-21 11:05:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:55,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:05:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:05:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:05:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:05:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 11:05:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:05:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:05:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:05:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:05:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:05:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:05:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 11:05:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:05:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:05:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:05:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:05:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:05:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:05:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 11:05:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-21 11:05:56,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:05:56,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798919994] [2022-07-21 11:05:56,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798919994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:05:56,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:05:56,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 11:05:56,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152961378] [2022-07-21 11:05:56,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:05:56,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 11:05:56,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:05:56,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 11:05:56,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:05:56,412 INFO L87 Difference]: Start difference. First operand 8314 states and 11929 transitions. Second operand has 11 states, 10 states have (on average 14.2) internal successors, (142), 5 states have internal predecessors, (142), 3 states have call successors, (26), 7 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-21 11:06:05,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:06:05,606 INFO L93 Difference]: Finished difference Result 18380 states and 27043 transitions. [2022-07-21 11:06:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 11:06:05,606 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 14.2) internal successors, (142), 5 states have internal predecessors, (142), 3 states have call successors, (26), 7 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 219 [2022-07-21 11:06:05,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:06:05,645 INFO L225 Difference]: With dead ends: 18380 [2022-07-21 11:06:05,645 INFO L226 Difference]: Without dead ends: 10076 [2022-07-21 11:06:05,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:06:05,668 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 644 mSDsluCounter, 6598 mSDsCounter, 0 mSdLazyCounter, 6953 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 8161 SdHoareTripleChecker+Invalid, 7329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 6953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:06:05,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 8161 Invalid, 7329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 6953 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-07-21 11:06:05,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10076 states. [2022-07-21 11:06:06,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10076 to 8314. [2022-07-21 11:06:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8314 states, 6039 states have (on average 1.3005464480874316) internal successors, (7854), 6137 states have internal predecessors, (7854), 1674 states have call successors, (1674), 461 states have call predecessors, (1674), 600 states have return successors, (2389), 1807 states have call predecessors, (2389), 1673 states have call successors, (2389) [2022-07-21 11:06:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8314 states to 8314 states and 11917 transitions. [2022-07-21 11:06:06,124 INFO L78 Accepts]: Start accepts. Automaton has 8314 states and 11917 transitions. Word has length 219 [2022-07-21 11:06:06,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:06:06,124 INFO L495 AbstractCegarLoop]: Abstraction has 8314 states and 11917 transitions. [2022-07-21 11:06:06,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 14.2) internal successors, (142), 5 states have internal predecessors, (142), 3 states have call successors, (26), 7 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-21 11:06:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 8314 states and 11917 transitions. [2022-07-21 11:06:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-21 11:06:06,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:06:06,136 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:06:06,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 11:06:06,136 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:06:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:06:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash 258100996, now seen corresponding path program 1 times [2022-07-21 11:06:06,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:06:06,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467703212] [2022-07-21 11:06:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:06:06,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:06:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:06:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:06:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:06:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:06:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:06:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:06:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 11:06:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:06:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:06:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:06:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:06:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:06:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:06:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:06:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 11:06:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 11:06:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:06:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:06:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:07,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:08,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:06:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:06:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:06:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:06:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-21 11:06:08,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:06:08,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467703212] [2022-07-21 11:06:08,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467703212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:06:08,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:06:08,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-21 11:06:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615756945] [2022-07-21 11:06:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:06:08,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 11:06:08,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:06:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 11:06:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2022-07-21 11:06:08,188 INFO L87 Difference]: Start difference. First operand 8314 states and 11917 transitions. Second operand has 21 states, 20 states have (on average 7.1) internal successors, (142), 12 states have internal predecessors, (142), 4 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 11:06:23,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:06:23,212 INFO L93 Difference]: Finished difference Result 18868 states and 27857 transitions. [2022-07-21 11:06:23,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 11:06:23,212 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 7.1) internal successors, (142), 12 states have internal predecessors, (142), 4 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) Word has length 220 [2022-07-21 11:06:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:06:23,247 INFO L225 Difference]: With dead ends: 18868 [2022-07-21 11:06:23,248 INFO L226 Difference]: Without dead ends: 10564 [2022-07-21 11:06:23,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-07-21 11:06:23,268 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1375 mSDsluCounter, 16102 mSDsCounter, 0 mSdLazyCounter, 15103 mSolverCounterSat, 1066 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 17750 SdHoareTripleChecker+Invalid, 16169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1066 IncrementalHoareTripleChecker+Valid, 15103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:06:23,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 17750 Invalid, 16169 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1066 Valid, 15103 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2022-07-21 11:06:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10564 states. [2022-07-21 11:06:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10564 to 8350. [2022-07-21 11:06:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 6071 states have (on average 1.298962279690331) internal successors, (7886), 6161 states have internal predecessors, (7886), 1678 states have call successors, (1678), 461 states have call predecessors, (1678), 600 states have return successors, (2387), 1819 states have call predecessors, (2387), 1677 states have call successors, (2387) [2022-07-21 11:06:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 11951 transitions. [2022-07-21 11:06:23,638 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 11951 transitions. Word has length 220 [2022-07-21 11:06:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:06:23,638 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 11951 transitions. [2022-07-21 11:06:23,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.1) internal successors, (142), 12 states have internal predecessors, (142), 4 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 11:06:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 11951 transitions. [2022-07-21 11:06:23,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 11:06:23,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:06:23,650 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:06:23,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 11:06:23,651 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:06:23,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:06:23,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1136633078, now seen corresponding path program 1 times [2022-07-21 11:06:23,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:06:23,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047553176] [2022-07-21 11:06:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:06:23,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:06:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:23,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:06:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:06:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:06:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:23,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:06:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:06:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:06:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:06:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:06:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:06:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:06:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 11:06:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 11:06:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 11:06:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:06:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:06:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:06:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:06:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:06:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:06:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 11:06:24,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:06:24,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047553176] [2022-07-21 11:06:24,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047553176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:06:24,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:06:24,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 11:06:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944481934] [2022-07-21 11:06:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:06:24,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 11:06:24,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:06:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 11:06:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:06:24,256 INFO L87 Difference]: Start difference. First operand 8350 states and 11951 transitions. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 7 states have internal predecessors, (132), 5 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 11:06:35,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:06:35,654 INFO L93 Difference]: Finished difference Result 19984 states and 29923 transitions. [2022-07-21 11:06:35,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 11:06:35,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 7 states have internal predecessors, (132), 5 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 193 [2022-07-21 11:06:35,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:06:35,706 INFO L225 Difference]: With dead ends: 19984 [2022-07-21 11:06:35,707 INFO L226 Difference]: Without dead ends: 11644 [2022-07-21 11:06:35,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992 [2022-07-21 11:06:35,738 INFO L413 NwaCegarLoop]: 1976 mSDtfsCounter, 5826 mSDsluCounter, 4285 mSDsCounter, 0 mSdLazyCounter, 11207 mSolverCounterSat, 4689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6117 SdHoareTripleChecker+Valid, 6261 SdHoareTripleChecker+Invalid, 15896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4689 IncrementalHoareTripleChecker+Valid, 11207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:06:35,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6117 Valid, 6261 Invalid, 15896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4689 Valid, 11207 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-07-21 11:06:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11644 states. [2022-07-21 11:06:36,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11644 to 8968. [2022-07-21 11:06:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8968 states, 6541 states have (on average 1.2984253172297813) internal successors, (8493), 6602 states have internal predecessors, (8493), 1810 states have call successors, (1810), 461 states have call predecessors, (1810), 616 states have return successors, (2618), 2004 states have call predecessors, (2618), 1809 states have call successors, (2618) [2022-07-21 11:06:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8968 states to 8968 states and 12921 transitions. [2022-07-21 11:06:36,189 INFO L78 Accepts]: Start accepts. Automaton has 8968 states and 12921 transitions. Word has length 193 [2022-07-21 11:06:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:06:36,189 INFO L495 AbstractCegarLoop]: Abstraction has 8968 states and 12921 transitions. [2022-07-21 11:06:36,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 7 states have internal predecessors, (132), 5 states have call successors, (23), 8 states have call predecessors, (23), 3 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 11:06:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 8968 states and 12921 transitions. [2022-07-21 11:06:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-21 11:06:36,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:06:36,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:06:36,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 11:06:36,202 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:06:36,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:06:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1480934662, now seen corresponding path program 1 times [2022-07-21 11:06:36,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:06:36,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640573787] [2022-07-21 11:06:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:06:36,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:06:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:36,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:06:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:06:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:36,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:06:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:36,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 11:06:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:06:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:06:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:06:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:06:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:06:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 11:06:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 11:06:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 11:06:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 11:06:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:06:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:06:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:06:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 11:06:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:06:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:06:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 11:06:37,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:06:37,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640573787] [2022-07-21 11:06:37,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640573787] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:06:37,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485549073] [2022-07-21 11:06:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:06:37,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:06:37,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:06:37,956 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:06:37,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 11:06:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:39,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-21 11:06:39,252 INFO L286 TraceCheckSpWp]: Computing forward predicates...