./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 03:57:04,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 03:57:04,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 03:57:04,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 03:57:04,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 03:57:04,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 03:57:04,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 03:57:04,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 03:57:04,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 03:57:04,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 03:57:04,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 03:57:04,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 03:57:04,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 03:57:04,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 03:57:04,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 03:57:04,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 03:57:04,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 03:57:04,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 03:57:04,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 03:57:04,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 03:57:04,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 03:57:04,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 03:57:04,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 03:57:04,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 03:57:04,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 03:57:04,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 03:57:04,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 03:57:04,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 03:57:04,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 03:57:04,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 03:57:04,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 03:57:04,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 03:57:04,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 03:57:04,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 03:57:04,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 03:57:04,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 03:57:04,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 03:57:04,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 03:57:04,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 03:57:04,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 03:57:04,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 03:57:04,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 03:57:04,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 03:57:04,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 03:57:04,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 03:57:04,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 03:57:04,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 03:57:04,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 03:57:04,477 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 03:57:04,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 03:57:04,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 03:57:04,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 03:57:04,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 03:57:04,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 03:57:04,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 03:57:04,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 03:57:04,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 03:57:04,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 03:57:04,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 03:57:04,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 03:57:04,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 03:57:04,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:57:04,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 03:57:04,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 03:57:04,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 03:57:04,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 03:57:04,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 03:57:04,481 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 03:57:04,481 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 03:57:04,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 03:57:04,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 03:57:04,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2021-11-04 03:57:04,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 03:57:04,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 03:57:04,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 03:57:04,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 03:57:04,713 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 03:57:04,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-04 03:57:04,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64fb85523/e58c73681f2845aa8cbccd153ff4218c/FLAG061d28521 [2021-11-04 03:57:05,313 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 03:57:05,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-04 03:57:05,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64fb85523/e58c73681f2845aa8cbccd153ff4218c/FLAG061d28521 [2021-11-04 03:57:05,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64fb85523/e58c73681f2845aa8cbccd153ff4218c [2021-11-04 03:57:05,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 03:57:05,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 03:57:05,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 03:57:05,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 03:57:05,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 03:57:05,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:57:05" (1/1) ... [2021-11-04 03:57:05,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b81c295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:05, skipping insertion in model container [2021-11-04 03:57:05,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:57:05" (1/1) ... [2021-11-04 03:57:05,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 03:57:05,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 03:57:06,148 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-11-04 03:57:06,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:57:06,524 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 03:57:06,636 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-11-04 03:57:06,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:57:06,800 INFO L208 MainTranslator]: Completed translation [2021-11-04 03:57:06,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06 WrapperNode [2021-11-04 03:57:06,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 03:57:06,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 03:57:06,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 03:57:06,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 03:57:06,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (1/1) ... [2021-11-04 03:57:06,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (1/1) ... [2021-11-04 03:57:07,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 03:57:07,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 03:57:07,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 03:57:07,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 03:57:07,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (1/1) ... [2021-11-04 03:57:07,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (1/1) ... [2021-11-04 03:57:07,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (1/1) ... [2021-11-04 03:57:07,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (1/1) ... [2021-11-04 03:57:07,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (1/1) ... [2021-11-04 03:57:07,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (1/1) ... [2021-11-04 03:57:07,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (1/1) ... [2021-11-04 03:57:07,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 03:57:07,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 03:57:07,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 03:57:07,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 03:57:07,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (1/1) ... [2021-11-04 03:57:07,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:57:07,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:57:07,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 03:57:07,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 03:57:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 03:57:07,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 03:57:07,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 03:57:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 03:57:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 03:57:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 03:57:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 03:57:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 03:57:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 03:57:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 03:57:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 03:57:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 03:57:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 03:57:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 03:57:07,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 03:57:08,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 03:57:08,837 INFO L299 CfgBuilder]: Removed 1398 assume(true) statements. [2021-11-04 03:57:08,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:57:08 BoogieIcfgContainer [2021-11-04 03:57:08,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 03:57:08,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 03:57:08,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 03:57:08,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 03:57:08,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:57:05" (1/3) ... [2021-11-04 03:57:08,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e19427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:57:08, skipping insertion in model container [2021-11-04 03:57:08,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:57:06" (2/3) ... [2021-11-04 03:57:08,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e19427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:57:08, skipping insertion in model container [2021-11-04 03:57:08,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:57:08" (3/3) ... [2021-11-04 03:57:08,846 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-04 03:57:08,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 03:57:08,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-04 03:57:08,890 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 03:57:08,895 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 03:57:08,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-04 03:57:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 1196 states, 1194 states have (on average 1.4028475711892798) internal successors, (1675), 1195 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-04 03:57:08,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:57:08,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:57:08,937 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:57:08,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:57:08,941 INFO L85 PathProgramCache]: Analyzing trace with hash 124254041, now seen corresponding path program 1 times [2021-11-04 03:57:08,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:57:08,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780993864] [2021-11-04 03:57:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:57:08,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:57:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:57:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:57:09,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:57:09,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780993864] [2021-11-04 03:57:09,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780993864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:57:09,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:57:09,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:57:09,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873316881] [2021-11-04 03:57:09,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:57:09,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:57:09,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:57:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:57:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:57:09,302 INFO L87 Difference]: Start difference. First operand has 1196 states, 1194 states have (on average 1.4028475711892798) internal successors, (1675), 1195 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:57:13,174 INFO L93 Difference]: Finished difference Result 3547 states and 4973 transitions. [2021-11-04 03:57:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:57:13,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-04 03:57:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:57:13,195 INFO L225 Difference]: With dead ends: 3547 [2021-11-04 03:57:13,196 INFO L226 Difference]: Without dead ends: 2314 [2021-11-04 03:57:13,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:57:13,204 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1565 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2975.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.17ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3668.04ms IncrementalHoareTripleChecker+Time [2021-11-04 03:57:13,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 38 Invalid, 3182 Unknown, 0 Unchecked, 12.17ms Time], IncrementalHoareTripleChecker [3 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 3668.04ms Time] [2021-11-04 03:57:13,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-11-04 03:57:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2314. [2021-11-04 03:57:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2313 states have (on average 1.3398184176394292) internal successors, (3099), 2313 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3099 transitions. [2021-11-04 03:57:13,308 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3099 transitions. Word has length 20 [2021-11-04 03:57:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:57:13,308 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 3099 transitions. [2021-11-04 03:57:13,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3099 transitions. [2021-11-04 03:57:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-04 03:57:13,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:57:13,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:57:13,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 03:57:13,311 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:57:13,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:57:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash -573068823, now seen corresponding path program 1 times [2021-11-04 03:57:13,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:57:13,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525510517] [2021-11-04 03:57:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:57:13,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:57:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:57:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:57:13,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:57:13,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525510517] [2021-11-04 03:57:13,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525510517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:57:13,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:57:13,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 03:57:13,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034716111] [2021-11-04 03:57:13,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:57:13,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 03:57:13,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:57:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 03:57:13,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:57:13,414 INFO L87 Difference]: Start difference. First operand 2314 states and 3099 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:57:18,365 INFO L93 Difference]: Finished difference Result 6904 states and 9254 transitions. [2021-11-04 03:57:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:57:18,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-04 03:57:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:57:18,379 INFO L225 Difference]: With dead ends: 6904 [2021-11-04 03:57:18,380 INFO L226 Difference]: Without dead ends: 4604 [2021-11-04 03:57:18,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.96ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:57:18,388 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1530 mSDsluCounter, 4496 mSDsCounter, 0 mSdLazyCounter, 6279 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3956.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.28ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 6279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4734.61ms IncrementalHoareTripleChecker+Time [2021-11-04 03:57:18,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 0 Invalid, 6288 Unknown, 0 Unchecked, 14.28ms Time], IncrementalHoareTripleChecker [9 Valid, 6279 Invalid, 0 Unknown, 0 Unchecked, 4734.61ms Time] [2021-11-04 03:57:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2021-11-04 03:57:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4540. [2021-11-04 03:57:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4540 states, 4539 states have (on average 1.3379599030623486) internal successors, (6073), 4539 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4540 states to 4540 states and 6073 transitions. [2021-11-04 03:57:18,525 INFO L78 Accepts]: Start accepts. Automaton has 4540 states and 6073 transitions. Word has length 24 [2021-11-04 03:57:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:57:18,525 INFO L470 AbstractCegarLoop]: Abstraction has 4540 states and 6073 transitions. [2021-11-04 03:57:18,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4540 states and 6073 transitions. [2021-11-04 03:57:18,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-04 03:57:18,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:57:18,537 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:57:18,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 03:57:18,537 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:57:18,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:57:18,538 INFO L85 PathProgramCache]: Analyzing trace with hash 260287450, now seen corresponding path program 1 times [2021-11-04 03:57:18,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:57:18,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234988096] [2021-11-04 03:57:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:57:18,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:57:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:57:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 03:57:18,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:57:18,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234988096] [2021-11-04 03:57:18,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234988096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:57:18,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:57:18,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:57:18,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551919781] [2021-11-04 03:57:18,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:57:18,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:57:18,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:57:18,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:57:18,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:57:18,650 INFO L87 Difference]: Start difference. First operand 4540 states and 6073 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:57:24,255 INFO L93 Difference]: Finished difference Result 19720 states and 26309 transitions. [2021-11-04 03:57:24,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:57:24,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-04 03:57:24,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:57:24,321 INFO L225 Difference]: With dead ends: 19720 [2021-11-04 03:57:24,322 INFO L226 Difference]: Without dead ends: 15198 [2021-11-04 03:57:24,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:57:24,340 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2543 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 6984 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4403.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.36ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5256.65ms IncrementalHoareTripleChecker+Time [2021-11-04 03:57:24,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2543 Valid, 0 Invalid, 6995 Unknown, 0 Unchecked, 10.36ms Time], IncrementalHoareTripleChecker [11 Valid, 6984 Invalid, 0 Unknown, 0 Unchecked, 5256.65ms Time] [2021-11-04 03:57:24,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15198 states. [2021-11-04 03:57:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15198 to 7736. [2021-11-04 03:57:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7736 states, 7735 states have (on average 1.333678086619263) internal successors, (10316), 7735 states have internal predecessors, (10316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:24,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 10316 transitions. [2021-11-04 03:57:24,616 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 10316 transitions. Word has length 63 [2021-11-04 03:57:24,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:57:24,616 INFO L470 AbstractCegarLoop]: Abstraction has 7736 states and 10316 transitions. [2021-11-04 03:57:24,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:24,617 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 10316 transitions. [2021-11-04 03:57:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-04 03:57:24,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:57:24,624 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:57:24,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 03:57:24,625 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:57:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:57:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1945592412, now seen corresponding path program 1 times [2021-11-04 03:57:24,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:57:24,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385601193] [2021-11-04 03:57:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:57:24,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:57:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:57:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 03:57:24,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:57:24,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385601193] [2021-11-04 03:57:24,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385601193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:57:24,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:57:24,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:57:24,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592009638] [2021-11-04 03:57:24,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:57:24,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:57:24,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:57:24,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:57:24,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:57:24,737 INFO L87 Difference]: Start difference. First operand 7736 states and 10316 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:29,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:57:29,998 INFO L93 Difference]: Finished difference Result 35700 states and 47532 transitions. [2021-11-04 03:57:29,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:57:29,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-04 03:57:29,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:57:30,064 INFO L225 Difference]: With dead ends: 35700 [2021-11-04 03:57:30,065 INFO L226 Difference]: Without dead ends: 27982 [2021-11-04 03:57:30,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:57:30,080 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3632 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 5774 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4019.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.72ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 5774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4749.66ms IncrementalHoareTripleChecker+Time [2021-11-04 03:57:30,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3632 Valid, 0 Invalid, 5787 Unknown, 0 Unchecked, 12.72ms Time], IncrementalHoareTripleChecker [13 Valid, 5774 Invalid, 0 Unknown, 0 Unchecked, 4749.66ms Time] [2021-11-04 03:57:30,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27982 states. [2021-11-04 03:57:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27982 to 15124. [2021-11-04 03:57:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15124 states, 15123 states have (on average 1.3321430933015936) internal successors, (20146), 15123 states have internal predecessors, (20146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15124 states to 15124 states and 20146 transitions. [2021-11-04 03:57:30,550 INFO L78 Accepts]: Start accepts. Automaton has 15124 states and 20146 transitions. Word has length 64 [2021-11-04 03:57:30,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:57:30,550 INFO L470 AbstractCegarLoop]: Abstraction has 15124 states and 20146 transitions. [2021-11-04 03:57:30,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:30,551 INFO L276 IsEmpty]: Start isEmpty. Operand 15124 states and 20146 transitions. [2021-11-04 03:57:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-04 03:57:30,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:57:30,558 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:57:30,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 03:57:30,558 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:57:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:57:30,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1296173829, now seen corresponding path program 1 times [2021-11-04 03:57:30,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:57:30,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14092452] [2021-11-04 03:57:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:57:30,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:57:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:57:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 03:57:30,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:57:30,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14092452] [2021-11-04 03:57:30,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14092452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:57:30,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:57:30,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:57:30,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073516097] [2021-11-04 03:57:30,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:57:30,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:57:30,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:57:30,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:57:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:57:30,638 INFO L87 Difference]: Start difference. First operand 15124 states and 20146 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:36,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:57:36,433 INFO L93 Difference]: Finished difference Result 70372 states and 93614 transitions. [2021-11-04 03:57:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:57:36,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-04 03:57:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:57:36,568 INFO L225 Difference]: With dead ends: 70372 [2021-11-04 03:57:36,569 INFO L226 Difference]: Without dead ends: 55266 [2021-11-04 03:57:36,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:57:36,599 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3638 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 5773 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3961.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3638 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.63ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 5773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4728.03ms IncrementalHoareTripleChecker+Time [2021-11-04 03:57:36,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3638 Valid, 0 Invalid, 5786 Unknown, 0 Unchecked, 11.63ms Time], IncrementalHoareTripleChecker [13 Valid, 5773 Invalid, 0 Unknown, 0 Unchecked, 4728.03ms Time] [2021-11-04 03:57:36,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55266 states. [2021-11-04 03:57:37,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55266 to 29588. [2021-11-04 03:57:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29588 states, 29587 states have (on average 1.3307871700408964) internal successors, (39374), 29587 states have internal predecessors, (39374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29588 states to 29588 states and 39374 transitions. [2021-11-04 03:57:37,442 INFO L78 Accepts]: Start accepts. Automaton has 29588 states and 39374 transitions. Word has length 65 [2021-11-04 03:57:37,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:57:37,442 INFO L470 AbstractCegarLoop]: Abstraction has 29588 states and 39374 transitions. [2021-11-04 03:57:37,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:37,443 INFO L276 IsEmpty]: Start isEmpty. Operand 29588 states and 39374 transitions. [2021-11-04 03:57:37,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-04 03:57:37,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:57:37,452 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:57:37,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 03:57:37,453 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:57:37,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:57:37,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1636642589, now seen corresponding path program 1 times [2021-11-04 03:57:37,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:57:37,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3967178] [2021-11-04 03:57:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:57:37,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:57:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:57:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 03:57:37,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:57:37,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3967178] [2021-11-04 03:57:37,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3967178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:57:37,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:57:37,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:57:37,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738518764] [2021-11-04 03:57:37,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:57:37,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:57:37,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:57:37,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:57:37,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:57:37,529 INFO L87 Difference]: Start difference. First operand 29588 states and 39374 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:57:44,738 INFO L93 Difference]: Finished difference Result 138764 states and 184450 transitions. [2021-11-04 03:57:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:57:44,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-04 03:57:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:57:45,070 INFO L225 Difference]: With dead ends: 138764 [2021-11-04 03:57:45,070 INFO L226 Difference]: Without dead ends: 109194 [2021-11-04 03:57:45,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:57:45,129 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3644 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 5772 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3992.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3644 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.41ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 5772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4899.67ms IncrementalHoareTripleChecker+Time [2021-11-04 03:57:45,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3644 Valid, 0 Invalid, 5785 Unknown, 0 Unchecked, 11.41ms Time], IncrementalHoareTripleChecker [13 Valid, 5772 Invalid, 0 Unknown, 0 Unchecked, 4899.67ms Time] [2021-11-04 03:57:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109194 states. [2021-11-04 03:57:46,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109194 to 57888. [2021-11-04 03:57:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57888 states, 57887 states have (on average 1.329452208613333) internal successors, (76958), 57887 states have internal predecessors, (76958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57888 states to 57888 states and 76958 transitions. [2021-11-04 03:57:47,127 INFO L78 Accepts]: Start accepts. Automaton has 57888 states and 76958 transitions. Word has length 66 [2021-11-04 03:57:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:57:47,127 INFO L470 AbstractCegarLoop]: Abstraction has 57888 states and 76958 transitions. [2021-11-04 03:57:47,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:47,127 INFO L276 IsEmpty]: Start isEmpty. Operand 57888 states and 76958 transitions. [2021-11-04 03:57:47,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-04 03:57:47,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:57:47,135 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 03:57:47,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 03:57:47,136 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:57:47,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:57:47,136 INFO L85 PathProgramCache]: Analyzing trace with hash 929253526, now seen corresponding path program 1 times [2021-11-04 03:57:47,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:57:47,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130864330] [2021-11-04 03:57:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:57:47,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:57:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:57:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 03:57:47,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:57:47,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130864330] [2021-11-04 03:57:47,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130864330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:57:47,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:57:47,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:57:47,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777468546] [2021-11-04 03:57:47,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:57:47,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 03:57:47,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:57:47,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 03:57:47,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:57:47,219 INFO L87 Difference]: Start difference. First operand 57888 states and 76958 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:57,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:57:57,937 INFO L93 Difference]: Finished difference Result 196872 states and 261570 transitions. [2021-11-04 03:57:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 03:57:57,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-04 03:57:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:57:58,246 INFO L225 Difference]: With dead ends: 196872 [2021-11-04 03:57:58,246 INFO L226 Difference]: Without dead ends: 139002 [2021-11-04 03:57:58,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.02ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 03:57:58,421 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5789 mSDsluCounter, 6371 mSDsCounter, 0 mSdLazyCounter, 9461 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5896.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5789 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.15ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 9461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7118.64ms IncrementalHoareTripleChecker+Time [2021-11-04 03:57:58,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5789 Valid, 0 Invalid, 9493 Unknown, 0 Unchecked, 18.15ms Time], IncrementalHoareTripleChecker [32 Valid, 9461 Invalid, 0 Unknown, 0 Unchecked, 7118.64ms Time] [2021-11-04 03:57:58,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139002 states. [2021-11-04 03:58:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139002 to 58048. [2021-11-04 03:58:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58048 states, 58047 states have (on average 1.32854411080676) internal successors, (77118), 58047 states have internal predecessors, (77118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58048 states to 58048 states and 77118 transitions. [2021-11-04 03:58:00,979 INFO L78 Accepts]: Start accepts. Automaton has 58048 states and 77118 transitions. Word has length 70 [2021-11-04 03:58:00,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:58:00,979 INFO L470 AbstractCegarLoop]: Abstraction has 58048 states and 77118 transitions. [2021-11-04 03:58:00,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 58048 states and 77118 transitions. [2021-11-04 03:58:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 03:58:00,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:58:00,986 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:58:00,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 03:58:00,986 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:58:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:58:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1915905124, now seen corresponding path program 1 times [2021-11-04 03:58:00,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:58:00,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075926631] [2021-11-04 03:58:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:58:00,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:58:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:58:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 03:58:01,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:58:01,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075926631] [2021-11-04 03:58:01,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075926631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:58:01,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:58:01,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:58:01,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058677564] [2021-11-04 03:58:01,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:58:01,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:58:01,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:58:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:58:01,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:58:01,067 INFO L87 Difference]: Start difference. First operand 58048 states and 77118 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:06,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:58:06,316 INFO L93 Difference]: Finished difference Result 137700 states and 183004 transitions. [2021-11-04 03:58:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:58:06,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-04 03:58:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:58:06,469 INFO L225 Difference]: With dead ends: 137700 [2021-11-04 03:58:06,469 INFO L226 Difference]: Without dead ends: 79670 [2021-11-04 03:58:06,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:58:06,529 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 829 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 3519 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2225.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.48ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2664.11ms IncrementalHoareTripleChecker+Time [2021-11-04 03:58:06,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 0 Invalid, 3526 Unknown, 0 Unchecked, 4.48ms Time], IncrementalHoareTripleChecker [7 Valid, 3519 Invalid, 0 Unknown, 0 Unchecked, 2664.11ms Time] [2021-11-04 03:58:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79670 states. [2021-11-04 03:58:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79670 to 68528. [2021-11-04 03:58:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68528 states, 68527 states have (on average 1.3343353714594248) internal successors, (91438), 68527 states have internal predecessors, (91438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68528 states to 68528 states and 91438 transitions. [2021-11-04 03:58:09,067 INFO L78 Accepts]: Start accepts. Automaton has 68528 states and 91438 transitions. Word has length 74 [2021-11-04 03:58:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:58:09,068 INFO L470 AbstractCegarLoop]: Abstraction has 68528 states and 91438 transitions. [2021-11-04 03:58:09,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 68528 states and 91438 transitions. [2021-11-04 03:58:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-04 03:58:09,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:58:09,075 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:58:09,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 03:58:09,076 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:58:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:58:09,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2119199959, now seen corresponding path program 1 times [2021-11-04 03:58:09,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:58:09,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395793888] [2021-11-04 03:58:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:58:09,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:58:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:58:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 03:58:09,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:58:09,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395793888] [2021-11-04 03:58:09,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395793888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:58:09,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:58:09,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:58:09,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687607107] [2021-11-04 03:58:09,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:58:09,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:58:09,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:58:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:58:09,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:58:09,151 INFO L87 Difference]: Start difference. First operand 68528 states and 91438 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:58:15,990 INFO L93 Difference]: Finished difference Result 181548 states and 243328 transitions. [2021-11-04 03:58:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:58:15,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2021-11-04 03:58:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:58:16,215 INFO L225 Difference]: With dead ends: 181548 [2021-11-04 03:58:16,215 INFO L226 Difference]: Without dead ends: 113038 [2021-11-04 03:58:16,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:58:16,291 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1116 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 4167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2788.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.78ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3303.28ms IncrementalHoareTripleChecker+Time [2021-11-04 03:58:16,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 0 Invalid, 4169 Unknown, 0 Unchecked, 4.78ms Time], IncrementalHoareTripleChecker [2 Valid, 4167 Invalid, 0 Unknown, 0 Unchecked, 3303.28ms Time] [2021-11-04 03:58:16,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113038 states. [2021-11-04 03:58:20,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113038 to 113032. [2021-11-04 03:58:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113032 states, 113031 states have (on average 1.3427997628969044) internal successors, (151778), 113031 states have internal predecessors, (151778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113032 states to 113032 states and 151778 transitions. [2021-11-04 03:58:20,320 INFO L78 Accepts]: Start accepts. Automaton has 113032 states and 151778 transitions. Word has length 220 [2021-11-04 03:58:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:58:20,320 INFO L470 AbstractCegarLoop]: Abstraction has 113032 states and 151778 transitions. [2021-11-04 03:58:20,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 113032 states and 151778 transitions. [2021-11-04 03:58:20,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-04 03:58:20,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:58:20,329 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:58:20,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 03:58:20,329 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:58:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:58:20,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1774173655, now seen corresponding path program 1 times [2021-11-04 03:58:20,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:58:20,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756971680] [2021-11-04 03:58:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:58:20,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:58:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:58:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 03:58:20,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:58:20,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756971680] [2021-11-04 03:58:20,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756971680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:58:20,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:58:20,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:58:20,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917404430] [2021-11-04 03:58:20,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:58:20,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:58:20,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:58:20,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:58:20,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:58:20,410 INFO L87 Difference]: Start difference. First operand 113032 states and 151778 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:58:26,486 INFO L93 Difference]: Finished difference Result 226430 states and 304303 transitions. [2021-11-04 03:58:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:58:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-11-04 03:58:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:58:26,729 INFO L225 Difference]: With dead ends: 226430 [2021-11-04 03:58:26,730 INFO L226 Difference]: Without dead ends: 113416 [2021-11-04 03:58:26,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:58:26,826 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 3132 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2154.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.89ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2513.66ms IncrementalHoareTripleChecker+Time [2021-11-04 03:58:26,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3142 Unknown, 0 Unchecked, 3.89ms Time], IncrementalHoareTripleChecker [10 Valid, 3132 Invalid, 0 Unknown, 0 Unchecked, 2513.66ms Time] [2021-11-04 03:58:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113416 states.