./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.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 67e7778ced54570c612880d3f2f5d48e6e2d3dc55afd632628e45d31cdc74c58 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 20:52:48,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 20:52:48,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 20:52:48,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 20:52:48,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 20:52:48,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 20:52:48,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 20:52:48,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 20:52:48,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 20:52:48,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 20:52:48,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 20:52:48,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 20:52:48,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 20:52:48,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 20:52:48,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 20:52:48,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 20:52:48,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 20:52:48,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 20:52:48,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 20:52:48,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 20:52:48,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 20:52:48,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 20:52:48,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 20:52:48,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 20:52:48,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 20:52:48,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 20:52:48,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 20:52:48,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 20:52:48,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 20:52:48,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 20:52:48,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 20:52:48,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 20:52:48,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 20:52:48,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 20:52:48,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 20:52:48,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 20:52:48,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 20:52:48,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 20:52:48,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 20:52:48,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 20:52:48,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 20:52:48,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 20:52:48,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 20:52:48,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 20:52:48,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 20:52:48,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 20:52:48,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 20:52:48,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 20:52:48,462 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 20:52:48,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 20:52:48,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 20:52:48,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 20:52:48,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 20:52:48,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 20:52:48,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 20:52:48,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 20:52:48,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 20:52:48,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 20:52:48,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 20:52:48,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 20:52:48,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 20:52:48,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:52:48,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 20:52:48,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 20:52:48,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 20:52:48,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 20:52:48,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 20:52:48,466 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 20:52:48,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 20:52:48,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 20:52:48,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 20:52:48,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e7778ced54570c612880d3f2f5d48e6e2d3dc55afd632628e45d31cdc74c58 [2021-11-05 20:52:48,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 20:52:48,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 20:52:48,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 20:52:48,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 20:52:48,718 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 20:52:48,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-05 20:52:48,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc5cb4e1e/e9868396e1244c05bda905a7b4f7782b/FLAGb5e70df54 [2021-11-05 20:52:49,392 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 20:52:49,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-05 20:52:49,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc5cb4e1e/e9868396e1244c05bda905a7b4f7782b/FLAGb5e70df54 [2021-11-05 20:52:49,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc5cb4e1e/e9868396e1244c05bda905a7b4f7782b [2021-11-05 20:52:49,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 20:52:49,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 20:52:49,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 20:52:49,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 20:52:49,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 20:52:49,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:52:49" (1/1) ... [2021-11-05 20:52:49,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1237cfe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:49, skipping insertion in model container [2021-11-05 20:52:49,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:52:49" (1/1) ... [2021-11-05 20:52:49,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 20:52:49,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 20:52:51,391 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329615,329628] [2021-11-05 20:52:51,393 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329784,329797] [2021-11-05 20:52:51,394 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329951,329964] [2021-11-05 20:52:51,394 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[330119,330132] [2021-11-05 20:52:51,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:52:51,439 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 20:52:51,707 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329615,329628] [2021-11-05 20:52:51,708 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329784,329797] [2021-11-05 20:52:51,709 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329951,329964] [2021-11-05 20:52:51,709 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[330119,330132] [2021-11-05 20:52:51,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:52:51,902 INFO L208 MainTranslator]: Completed translation [2021-11-05 20:52:51,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51 WrapperNode [2021-11-05 20:52:51,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 20:52:51,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 20:52:51,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 20:52:51,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 20:52:51,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (1/1) ... [2021-11-05 20:52:51,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (1/1) ... [2021-11-05 20:52:55,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 20:52:55,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 20:52:55,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 20:52:55,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 20:52:55,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (1/1) ... [2021-11-05 20:52:55,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (1/1) ... [2021-11-05 20:52:55,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (1/1) ... [2021-11-05 20:52:55,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (1/1) ... [2021-11-05 20:52:57,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (1/1) ... [2021-11-05 20:52:57,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (1/1) ... [2021-11-05 20:52:57,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (1/1) ... [2021-11-05 20:52:58,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 20:52:58,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 20:52:58,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 20:52:58,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 20:52:58,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (1/1) ... [2021-11-05 20:52:58,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:52:58,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 20:52:58,248 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) [2021-11-05 20:52:58,269 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 [2021-11-05 20:52:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 20:52:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 20:52:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 20:52:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 20:52:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 20:52:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 20:52:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 20:52:58,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 20:52:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 20:52:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 20:52:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 20:52:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 20:52:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 20:52:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 20:52:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 20:54:07,667 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-05 20:54:07,667 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 20:54:07,668 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 20:54:07,670 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 20:54:07,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 20:54:07,741 INFO L299 CfgBuilder]: Removed 28753 assume(true) statements. [2021-11-05 20:54:07,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:54:07 BoogieIcfgContainer [2021-11-05 20:54:07,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 20:54:07,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 20:54:07,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 20:54:07,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 20:54:07,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 08:52:49" (1/3) ... [2021-11-05 20:54:07,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4145e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:54:07, skipping insertion in model container [2021-11-05 20:54:07,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:52:51" (2/3) ... [2021-11-05 20:54:07,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4145e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:54:07, skipping insertion in model container [2021-11-05 20:54:07,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:54:07" (3/3) ... [2021-11-05 20:54:07,765 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-05 20:54:07,769 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 20:54:07,769 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-11-05 20:54:07,859 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 20:54:07,864 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 [2021-11-05 20:54:07,864 INFO L340 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-11-05 20:54:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 22069 states, 22035 states have (on average 1.3668708872248696) internal successors, (30119), 22068 states have internal predecessors, (30119), 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) [2021-11-05 20:54:08,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-05 20:54:08,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:54:08,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:54:08,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-05 20:54:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:54:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1663244342, now seen corresponding path program 1 times [2021-11-05 20:54:08,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:54:08,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891369741] [2021-11-05 20:54:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:54:08,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:54:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:54:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:54:08,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:54:08,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891369741] [2021-11-05 20:54:08,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891369741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:54:08,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:54:08,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:54:08,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989251158] [2021-11-05 20:54:08,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:54:08,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:54:08,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:54:08,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:54:08,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:54:08,703 INFO L87 Difference]: Start difference. First operand has 22069 states, 22035 states have (on average 1.3668708872248696) internal successors, (30119), 22068 states have internal predecessors, (30119), 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 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-05 20:54:10,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:54:12,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:54:12,236 INFO L93 Difference]: Finished difference Result 65938 states and 90016 transitions. [2021-11-05 20:54:12,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:54:12,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-11-05 20:54:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:54:12,417 INFO L225 Difference]: With dead ends: 65938 [2021-11-05 20:54:12,418 INFO L226 Difference]: Without dead ends: 43704 [2021-11-05 20:54:12,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:54:12,488 INFO L933 BasicCegarLoop]: 30074 mSDtfsCounter, 29863 mSDsluCounter, 30029 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2062.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29863 SdHoareTripleChecker+Valid, 60103 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 107.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2196.82ms IncrementalHoareTripleChecker+Time [2021-11-05 20:54:12,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29863 Valid, 60103 Invalid, 14 Unknown, 0 Unchecked, 107.77ms Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2196.82ms Time] [2021-11-05 20:54:12,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43704 states. [2021-11-05 20:54:13,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43704 to 43692. [2021-11-05 20:54:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43692 states, 43658 states have (on average 1.3620184158687985) internal successors, (59463), 43691 states have internal predecessors, (59463), 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) [2021-11-05 20:54:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43692 states to 43692 states and 59463 transitions. [2021-11-05 20:54:13,840 INFO L78 Accepts]: Start accepts. Automaton has 43692 states and 59463 transitions. Word has length 30 [2021-11-05 20:54:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:54:13,841 INFO L470 AbstractCegarLoop]: Abstraction has 43692 states and 59463 transitions. [2021-11-05 20:54:13,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-05 20:54:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 43692 states and 59463 transitions. [2021-11-05 20:54:13,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-05 20:54:13,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:54:13,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:54:13,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 20:54:13,846 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-05 20:54:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:54:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1234824287, now seen corresponding path program 1 times [2021-11-05 20:54:13,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:54:13,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112441891] [2021-11-05 20:54:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:54:13,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:54:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:54:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:54:14,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:54:14,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112441891] [2021-11-05 20:54:14,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112441891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:54:14,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:54:14,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:54:14,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064475843] [2021-11-05 20:54:14,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:54:14,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:54:14,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:54:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:54:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:54:14,026 INFO L87 Difference]: Start difference. First operand 43692 states and 59463 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-11-05 20:54:16,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:54:17,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:54:17,946 INFO L93 Difference]: Finished difference Result 107102 states and 145619 transitions. [2021-11-05 20:54:17,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:54:17,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-11-05 20:54:17,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:54:18,101 INFO L225 Difference]: With dead ends: 107102 [2021-11-05 20:54:18,102 INFO L226 Difference]: Without dead ends: 63454 [2021-11-05 20:54:18,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:54:18,202 INFO L933 BasicCegarLoop]: 29813 mSDtfsCounter, 13460 mSDsluCounter, 29751 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2225.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13460 SdHoareTripleChecker+Valid, 59564 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.88ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2389.57ms IncrementalHoareTripleChecker+Time [2021-11-05 20:54:18,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13460 Valid, 59564 Invalid, 88 Unknown, 0 Unchecked, 50.88ms Time], IncrementalHoareTripleChecker [30 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2389.57ms Time] [2021-11-05 20:54:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63454 states. [2021-11-05 20:54:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63454 to 62754. [2021-11-05 20:54:19,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62754 states, 62720 states have (on average 1.360172193877551) internal successors, (85310), 62753 states have internal predecessors, (85310), 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) [2021-11-05 20:54:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62754 states to 62754 states and 85310 transitions. [2021-11-05 20:54:19,830 INFO L78 Accepts]: Start accepts. Automaton has 62754 states and 85310 transitions. Word has length 31 [2021-11-05 20:54:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:54:19,831 INFO L470 AbstractCegarLoop]: Abstraction has 62754 states and 85310 transitions. [2021-11-05 20:54:19,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-11-05 20:54:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 62754 states and 85310 transitions. [2021-11-05 20:54:19,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-05 20:54:19,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:54:19,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:54:19,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 20:54:19,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-05 20:54:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:54:19,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1128421566, now seen corresponding path program 1 times [2021-11-05 20:54:19,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:54:19,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879715970] [2021-11-05 20:54:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:54:19,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:54:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:54:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:54:19,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:54:19,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879715970] [2021-11-05 20:54:19,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879715970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:54:19,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:54:19,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:54:19,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803948109] [2021-11-05 20:54:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:54:19,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:54:19,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:54:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:54:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:54:19,991 INFO L87 Difference]: Start difference. First operand 62754 states and 85310 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-05 20:54:22,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:54:23,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:54:23,811 INFO L93 Difference]: Finished difference Result 170594 states and 231892 transitions. [2021-11-05 20:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:54:23,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-05 20:54:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:54:24,279 INFO L225 Difference]: With dead ends: 170594 [2021-11-05 20:54:24,279 INFO L226 Difference]: Without dead ends: 107884 [2021-11-05 20:54:24,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:54:24,406 INFO L933 BasicCegarLoop]: 29821 mSDtfsCounter, 27022 mSDsluCounter, 26565 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2135.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27022 SdHoareTripleChecker+Valid, 56386 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.45ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2302.75ms IncrementalHoareTripleChecker+Time [2021-11-05 20:54:24,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27022 Valid, 56386 Invalid, 54 Unknown, 0 Unchecked, 38.45ms Time], IncrementalHoareTripleChecker [13 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 2302.75ms Time] [2021-11-05 20:54:24,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107884 states. [2021-11-05 20:54:26,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107884 to 107320. [2021-11-05 20:54:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107320 states, 107286 states have (on average 1.3600469772384094) internal successors, (145914), 107319 states have internal predecessors, (145914), 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) [2021-11-05 20:54:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107320 states to 107320 states and 145914 transitions. [2021-11-05 20:54:26,877 INFO L78 Accepts]: Start accepts. Automaton has 107320 states and 145914 transitions. Word has length 36 [2021-11-05 20:54:26,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:54:26,878 INFO L470 AbstractCegarLoop]: Abstraction has 107320 states and 145914 transitions. [2021-11-05 20:54:26,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-05 20:54:26,878 INFO L276 IsEmpty]: Start isEmpty. Operand 107320 states and 145914 transitions. [2021-11-05 20:54:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 20:54:26,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:54:26,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:54:26,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 20:54:26,882 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-05 20:54:26,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:54:26,883 INFO L85 PathProgramCache]: Analyzing trace with hash -527361994, now seen corresponding path program 1 times [2021-11-05 20:54:26,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:54:26,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642909114] [2021-11-05 20:54:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:54:26,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:54:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:54:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:54:27,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:54:27,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642909114] [2021-11-05 20:54:27,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642909114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:54:27,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:54:27,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:54:27,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108077508] [2021-11-05 20:54:27,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:54:27,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:54:27,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:54:27,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:54:27,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:54:27,261 INFO L87 Difference]: Start difference. First operand 107320 states and 145914 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-05 20:54:29,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:54:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:54:32,029 INFO L93 Difference]: Finished difference Result 259718 states and 353068 transitions. [2021-11-05 20:54:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:54:32,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-05 20:54:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:54:32,484 INFO L225 Difference]: With dead ends: 259718 [2021-11-05 20:54:32,485 INFO L226 Difference]: Without dead ends: 152442 [2021-11-05 20:54:32,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:54:32,631 INFO L933 BasicCegarLoop]: 29826 mSDtfsCounter, 23889 mSDsluCounter, 29691 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2126.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23889 SdHoareTripleChecker+Valid, 59517 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.03ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2305.51ms IncrementalHoareTripleChecker+Time [2021-11-05 20:54:32,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23889 Valid, 59517 Invalid, 46 Unknown, 0 Unchecked, 40.03ms Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 2305.51ms Time] [2021-11-05 20:54:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152442 states. [2021-11-05 20:54:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152442 to 151878. [2021-11-05 20:54:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151878 states, 151844 states have (on average 1.3599351966491926) internal successors, (206498), 151877 states have internal predecessors, (206498), 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) [2021-11-05 20:54:35,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151878 states to 151878 states and 206498 transitions. [2021-11-05 20:54:35,817 INFO L78 Accepts]: Start accepts. Automaton has 151878 states and 206498 transitions. Word has length 51 [2021-11-05 20:54:35,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:54:35,817 INFO L470 AbstractCegarLoop]: Abstraction has 151878 states and 206498 transitions. [2021-11-05 20:54:35,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-05 20:54:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 151878 states and 206498 transitions. [2021-11-05 20:54:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 20:54:35,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:54:35,819 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:54:35,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 20:54:35,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-05 20:54:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:54:35,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1866639490, now seen corresponding path program 1 times [2021-11-05 20:54:35,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:54:35,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515162659] [2021-11-05 20:54:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:54:35,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:54:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:54:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:54:35,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:54:35,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515162659] [2021-11-05 20:54:35,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515162659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:54:35,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:54:35,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:54:35,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125092067] [2021-11-05 20:54:35,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:54:35,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:54:35,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:54:35,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:54:35,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:54:35,933 INFO L87 Difference]: Start difference. First operand 151878 states and 206498 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-05 20:54:37,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:54:41,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:54:41,494 INFO L93 Difference]: Finished difference Result 303712 states and 412947 transitions. [2021-11-05 20:54:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:54:41,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-05 20:54:41,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:54:41,980 INFO L225 Difference]: With dead ends: 303712 [2021-11-05 20:54:41,981 INFO L226 Difference]: Without dead ends: 227649 [2021-11-05 20:54:42,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:54:42,126 INFO L933 BasicCegarLoop]: 59465 mSDtfsCounter, 29692 mSDsluCounter, 29761 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2046.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29692 SdHoareTripleChecker+Valid, 89226 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.23ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2239.58ms IncrementalHoareTripleChecker+Time [2021-11-05 20:54:42,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29692 Valid, 89226 Invalid, 10 Unknown, 0 Unchecked, 54.23ms Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2239.58ms Time] [2021-11-05 20:54:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227649 states. [2021-11-05 20:54:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227649 to 227627. [2021-11-05 20:54:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227627 states, 227593 states have (on average 1.360046222862742) internal successors, (309537), 227626 states have internal predecessors, (309537), 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) [2021-11-05 20:54:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227627 states to 227627 states and 309537 transitions. [2021-11-05 20:54:47,560 INFO L78 Accepts]: Start accepts. Automaton has 227627 states and 309537 transitions. Word has length 58 [2021-11-05 20:54:47,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:54:47,560 INFO L470 AbstractCegarLoop]: Abstraction has 227627 states and 309537 transitions. [2021-11-05 20:54:47,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-05 20:54:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 227627 states and 309537 transitions. [2021-11-05 20:54:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 20:54:47,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:54:47,562 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:54:47,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 20:54:47,562 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-05 20:54:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:54:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2124804928, now seen corresponding path program 1 times [2021-11-05 20:54:47,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:54:47,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842246593] [2021-11-05 20:54:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:54:47,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:54:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:54:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 20:54:47,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:54:47,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842246593] [2021-11-05 20:54:47,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842246593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:54:47,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:54:47,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:54:47,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260357247] [2021-11-05 20:54:47,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:54:47,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:54:47,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:54:47,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:54:47,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:54:47,702 INFO L87 Difference]: Start difference. First operand 227627 states and 309537 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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)