./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-vlsi_ir.cil.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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.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 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 10:33:44,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 10:33:44,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 10:33:44,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 10:33:44,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 10:33:44,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 10:33:44,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 10:33:44,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 10:33:44,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 10:33:44,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 10:33:44,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 10:33:44,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 10:33:44,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 10:33:44,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 10:33:44,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 10:33:44,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 10:33:44,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 10:33:44,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 10:33:44,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 10:33:44,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 10:33:44,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 10:33:44,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 10:33:44,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 10:33:44,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 10:33:44,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 10:33:44,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 10:33:44,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 10:33:44,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 10:33:44,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 10:33:44,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 10:33:44,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 10:33:44,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 10:33:44,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 10:33:44,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 10:33:44,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 10:33:44,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 10:33:44,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 10:33:44,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 10:33:44,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 10:33:44,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 10:33:44,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 10:33:44,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 10:33:44,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 10:33:44,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 10:33:44,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 10:33:44,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 10:33:44,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 10:33:44,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 10:33:44,456 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 10:33:44,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 10:33:44,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 10:33:44,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 10:33:44,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 10:33:44,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 10:33:44,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 10:33:44,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 10:33:44,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 10:33:44,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 10:33:44,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 10:33:44,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 10:33:44,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 10:33:44,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:33:44,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 10:33:44,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 10:33:44,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 10:33:44,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 10:33:44,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 10:33:44,459 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 10:33:44,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 10:33:44,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 10:33:44,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 10:33:44,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 [2021-11-04 10:33:44,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 10:33:44,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 10:33:44,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 10:33:44,680 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 10:33:44,681 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 10:33:44,681 INFO L432 ainManager$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-vlsi_ir.cil.i [2021-11-04 10:33:44,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/586e5c325/76a25f4676474a08ba20bc5ac5bcf24d/FLAG47e406d19 [2021-11-04 10:33:45,402 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 10:33:45,403 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-vlsi_ir.cil.i [2021-11-04 10:33:45,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/586e5c325/76a25f4676474a08ba20bc5ac5bcf24d/FLAG47e406d19 [2021-11-04 10:33:45,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/586e5c325/76a25f4676474a08ba20bc5ac5bcf24d [2021-11-04 10:33:45,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 10:33:45,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 10:33:45,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 10:33:45,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 10:33:45,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 10:33:45,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:33:45" (1/1) ... [2021-11-04 10:33:45,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d9f9a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:45, skipping insertion in model container [2021-11-04 10:33:45,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:33:45" (1/1) ... [2021-11-04 10:33:45,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 10:33:45,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 10:33:47,558 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-vlsi_ir.cil.i[347848,347861] [2021-11-04 10:33:47,560 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-vlsi_ir.cil.i[348017,348030] [2021-11-04 10:33:47,560 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-vlsi_ir.cil.i[348184,348197] [2021-11-04 10:33:47,561 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-vlsi_ir.cil.i[348352,348365] [2021-11-04 10:33:47,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:33:47,617 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 10:33:47,853 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-vlsi_ir.cil.i[347848,347861] [2021-11-04 10:33:47,853 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-vlsi_ir.cil.i[348017,348030] [2021-11-04 10:33:47,854 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-vlsi_ir.cil.i[348184,348197] [2021-11-04 10:33:47,854 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-vlsi_ir.cil.i[348352,348365] [2021-11-04 10:33:47,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:33:47,964 INFO L208 MainTranslator]: Completed translation [2021-11-04 10:33:47,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47 WrapperNode [2021-11-04 10:33:47,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 10:33:47,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 10:33:47,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 10:33:47,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 10:33:47,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (1/1) ... [2021-11-04 10:33:48,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (1/1) ... [2021-11-04 10:33:48,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 10:33:48,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 10:33:48,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 10:33:48,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 10:33:48,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (1/1) ... [2021-11-04 10:33:48,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (1/1) ... [2021-11-04 10:33:48,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (1/1) ... [2021-11-04 10:33:48,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (1/1) ... [2021-11-04 10:33:49,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (1/1) ... [2021-11-04 10:33:49,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (1/1) ... [2021-11-04 10:33:49,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (1/1) ... [2021-11-04 10:33:49,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 10:33:49,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 10:33:49,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 10:33:49,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 10:33:49,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (1/1) ... [2021-11-04 10:33:49,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:33:49,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 10:33:49,605 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 10:33:49,688 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 10:33:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 10:33:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 10:33:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 10:33:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 10:33:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 10:33:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 10:33:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 10:33:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 10:33:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 10:33:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 10:33:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 10:33:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 10:33:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 10:33:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 10:33:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 10:33:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 10:34:19,039 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-04 10:34:19,040 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-04 10:34:19,040 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 10:34:19,040 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 10:34:19,041 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 10:34:19,041 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-04 10:34:19,042 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 10:34:19,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 10:34:19,073 INFO L299 CfgBuilder]: Removed 5799 assume(true) statements. [2021-11-04 10:34:19,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:34:19 BoogieIcfgContainer [2021-11-04 10:34:19,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 10:34:19,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 10:34:19,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 10:34:19,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 10:34:19,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 10:33:45" (1/3) ... [2021-11-04 10:34:19,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767ad6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:34:19, skipping insertion in model container [2021-11-04 10:34:19,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:33:47" (2/3) ... [2021-11-04 10:34:19,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767ad6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:34:19, skipping insertion in model container [2021-11-04 10:34:19,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:34:19" (3/3) ... [2021-11-04 10:34:19,088 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2021-11-04 10:34:19,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 10:34:19,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-11-04 10:34:19,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 10:34:19,149 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 10:34:19,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-11-04 10:34:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 5442 states, 5381 states have (on average 1.3413863594127486) internal successors, (7218), 5441 states have internal predecessors, (7218), 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 10:34:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-04 10:34:19,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:34:19,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:34:19,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-04 10:34:19,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:34:19,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2097704285, now seen corresponding path program 1 times [2021-11-04 10:34:19,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:34:19,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85251807] [2021-11-04 10:34:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:34:19,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:34:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:34:19,766 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 10:34:19,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:34:19,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85251807] [2021-11-04 10:34:19,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85251807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:34:19,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:34:19,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:34:19,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278731548] [2021-11-04 10:34:19,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:34:19,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:34:19,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:34:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:34:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:34:19,802 INFO L87 Difference]: Start difference. First operand has 5442 states, 5381 states have (on average 1.3413863594127486) internal successors, (7218), 5441 states have internal predecessors, (7218), 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 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 10:34:21,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:35:27,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:35:27,828 INFO L93 Difference]: Finished difference Result 15656 states and 20767 transitions. [2021-11-04 10:35:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:35:27,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-04 10:35:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:35:27,877 INFO L225 Difference]: With dead ends: 15656 [2021-11-04 10:35:27,877 INFO L226 Difference]: Without dead ends: 10010 [2021-11-04 10:35:27,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:35:27,894 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 6414 mSDsluCounter, 6954 mSDsCounter, 0 mSdLazyCounter, 13680 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62109.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6414 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 13697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 132.28ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 13680 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66477.63ms IncrementalHoareTripleChecker+Time [2021-11-04 10:35:27,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6414 Valid, 348 Invalid, 13697 Unknown, 0 Unchecked, 132.28ms Time], IncrementalHoareTripleChecker [16 Valid, 13680 Invalid, 1 Unknown, 0 Unchecked, 66477.63ms Time] [2021-11-04 10:35:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10010 states. [2021-11-04 10:35:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10010 to 8653. [2021-11-04 10:35:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8653 states, 8592 states have (on average 1.2932960893854748) internal successors, (11112), 8652 states have internal predecessors, (11112), 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 10:35:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8653 states to 8653 states and 11112 transitions. [2021-11-04 10:35:28,171 INFO L78 Accepts]: Start accepts. Automaton has 8653 states and 11112 transitions. Word has length 50 [2021-11-04 10:35:28,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:35:28,173 INFO L470 AbstractCegarLoop]: Abstraction has 8653 states and 11112 transitions. [2021-11-04 10:35:28,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 10:35:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 8653 states and 11112 transitions. [2021-11-04 10:35:28,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-04 10:35:28,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:35:28,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:35:28,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 10:35:28,181 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-04 10:35:28,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:35:28,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1423488389, now seen corresponding path program 1 times [2021-11-04 10:35:28,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:35:28,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124516522] [2021-11-04 10:35:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:35:28,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:35:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:35:28,500 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 10:35:28,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:35:28,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124516522] [2021-11-04 10:35:28,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124516522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:35:28,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:35:28,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:35:28,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276308826] [2021-11-04 10:35:28,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:35:28,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:35:28,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:35:28,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:35:28,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:35:28,502 INFO L87 Difference]: Start difference. First operand 8653 states and 11112 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 10:35:30,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:36:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:36:56,018 INFO L93 Difference]: Finished difference Result 25473 states and 32799 transitions. [2021-11-04 10:36:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:36:56,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-04 10:36:56,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:36:56,094 INFO L225 Difference]: With dead ends: 25473 [2021-11-04 10:36:56,095 INFO L226 Difference]: Without dead ends: 16912 [2021-11-04 10:36:56,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:36:56,112 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6403 mSDsluCounter, 6618 mSDsCounter, 0 mSdLazyCounter, 13340 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81063.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6403 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 84.24ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13340 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86044.50ms IncrementalHoareTripleChecker+Time [2021-11-04 10:36:56,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6403 Valid, 0 Invalid, 13348 Unknown, 0 Unchecked, 84.24ms Time], IncrementalHoareTripleChecker [7 Valid, 13340 Invalid, 1 Unknown, 0 Unchecked, 86044.50ms Time] [2021-11-04 10:36:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16912 states. [2021-11-04 10:36:56,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16912 to 16868. [2021-11-04 10:36:56,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16868 states, 16807 states have (on average 1.2943416433628845) internal successors, (21754), 16867 states have internal predecessors, (21754), 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 10:36:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16868 states to 16868 states and 21754 transitions. [2021-11-04 10:36:56,460 INFO L78 Accepts]: Start accepts. Automaton has 16868 states and 21754 transitions. Word has length 52 [2021-11-04 10:36:56,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:36:56,461 INFO L470 AbstractCegarLoop]: Abstraction has 16868 states and 21754 transitions. [2021-11-04 10:36:56,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 10:36:56,462 INFO L276 IsEmpty]: Start isEmpty. Operand 16868 states and 21754 transitions. [2021-11-04 10:36:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-04 10:36:56,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:36:56,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:36:56,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 10:36:56,465 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-04 10:36:56,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:36:56,465 INFO L85 PathProgramCache]: Analyzing trace with hash -475618733, now seen corresponding path program 1 times [2021-11-04 10:36:56,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:36:56,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433774832] [2021-11-04 10:36:56,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:36:56,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:36:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:36:56,718 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 10:36:56,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:36:56,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433774832] [2021-11-04 10:36:56,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433774832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:36:56,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:36:56,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:36:56,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817850927] [2021-11-04 10:36:56,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:36:56,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:36:56,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:36:56,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:36:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:36:56,719 INFO L87 Difference]: Start difference. First operand 16868 states and 21754 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 10:36:59,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:38:29,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:38:29,335 INFO L93 Difference]: Finished difference Result 47272 states and 60910 transitions. [2021-11-04 10:38:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:38:29,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-11-04 10:38:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:38:29,405 INFO L225 Difference]: With dead ends: 47272 [2021-11-04 10:38:29,405 INFO L226 Difference]: Without dead ends: 30496 [2021-11-04 10:38:29,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:38:29,436 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5558 mSDsluCounter, 6634 mSDsCounter, 0 mSdLazyCounter, 13366 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85563.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 85.30ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13366 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91150.15ms IncrementalHoareTripleChecker+Time [2021-11-04 10:38:29,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 0 Invalid, 13376 Unknown, 0 Unchecked, 85.30ms Time], IncrementalHoareTripleChecker [9 Valid, 13366 Invalid, 1 Unknown, 0 Unchecked, 91150.15ms Time] [2021-11-04 10:38:29,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30496 states. [2021-11-04 10:38:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30496 to 28968. [2021-11-04 10:38:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28968 states, 28907 states have (on average 1.2918670218286228) internal successors, (37344), 28967 states have internal predecessors, (37344), 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 10:38:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28968 states to 28968 states and 37344 transitions. [2021-11-04 10:38:30,106 INFO L78 Accepts]: Start accepts. Automaton has 28968 states and 37344 transitions. Word has length 56 [2021-11-04 10:38:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:38:30,108 INFO L470 AbstractCegarLoop]: Abstraction has 28968 states and 37344 transitions. [2021-11-04 10:38:30,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 10:38:30,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28968 states and 37344 transitions. [2021-11-04 10:38:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-04 10:38:30,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:38:30,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:38:30,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 10:38:30,111 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-04 10:38:30,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:38:30,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1528840602, now seen corresponding path program 1 times [2021-11-04 10:38:30,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:38:30,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331842464] [2021-11-04 10:38:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:38:30,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:38:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:38:30,348 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 10:38:30,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:38:30,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331842464] [2021-11-04 10:38:30,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331842464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:38:30,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:38:30,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:38:30,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156843845] [2021-11-04 10:38:30,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:38:30,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:38:30,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:38:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:38:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:38:30,350 INFO L87 Difference]: Start difference. First operand 28968 states and 37344 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 10:38:32,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:40:06,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:40:06,258 INFO L93 Difference]: Finished difference Result 47063 states and 60689 transitions. [2021-11-04 10:40:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:40:06,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 10:40:06,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:40:06,299 INFO L225 Difference]: With dead ends: 47063 [2021-11-04 10:40:06,299 INFO L226 Difference]: Without dead ends: 18187 [2021-11-04 10:40:06,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:40:06,347 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1935 mSDsluCounter, 6536 mSDsCounter, 0 mSdLazyCounter, 14786 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89513.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.21ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 14786 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94697.74ms IncrementalHoareTripleChecker+Time [2021-11-04 10:40:06,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 0 Invalid, 14807 Unknown, 0 Unchecked, 87.21ms Time], IncrementalHoareTripleChecker [20 Valid, 14786 Invalid, 1 Unknown, 0 Unchecked, 94697.74ms Time] [2021-11-04 10:40:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18187 states. [2021-11-04 10:40:06,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18187 to 18081. [2021-11-04 10:40:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18081 states, 18020 states have (on average 1.2918978912319645) internal successors, (23280), 18080 states have internal predecessors, (23280), 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 10:40:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18081 states to 18081 states and 23280 transitions. [2021-11-04 10:40:06,610 INFO L78 Accepts]: Start accepts. Automaton has 18081 states and 23280 transitions. Word has length 70 [2021-11-04 10:40:06,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:40:06,610 INFO L470 AbstractCegarLoop]: Abstraction has 18081 states and 23280 transitions. [2021-11-04 10:40:06,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 10:40:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 18081 states and 23280 transitions. [2021-11-04 10:40:06,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-04 10:40:06,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:40:06,612 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:40:06,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 10:40:06,612 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-04 10:40:06,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:40:06,613 INFO L85 PathProgramCache]: Analyzing trace with hash 980879748, now seen corresponding path program 1 times [2021-11-04 10:40:06,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:40:06,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716990228] [2021-11-04 10:40:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:40:06,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:40:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:40:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:40:06,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:40:06,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716990228] [2021-11-04 10:40:06,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716990228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:40:06,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:40:06,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:40:06,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115312259] [2021-11-04 10:40:06,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:40:06,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:40:06,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:40:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:40:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:40:06,884 INFO L87 Difference]: Start difference. First operand 18081 states and 23280 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 10:40:08,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:41:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:41:45,553 INFO L93 Difference]: Finished difference Result 53029 states and 68411 transitions. [2021-11-04 10:41:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:41:45,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-04 10:41:45,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:41:45,614 INFO L225 Difference]: With dead ends: 53029 [2021-11-04 10:41:45,614 INFO L226 Difference]: Without dead ends: 35211 [2021-11-04 10:41:45,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:41:45,641 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6341 mSDsluCounter, 6678 mSDsCounter, 0 mSdLazyCounter, 13597 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89430.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6341 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 86.80ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13597 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97018.78ms IncrementalHoareTripleChecker+Time [2021-11-04 10:41:45,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6341 Valid, 0 Invalid, 13603 Unknown, 0 Unchecked, 86.80ms Time], IncrementalHoareTripleChecker [5 Valid, 13597 Invalid, 1 Unknown, 0 Unchecked, 97018.78ms Time] [2021-11-04 10:41:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35211 states. [2021-11-04 10:41:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35211 to 35167. [2021-11-04 10:41:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35167 states, 35106 states have (on average 1.2924286446761237) internal successors, (45372), 35166 states have internal predecessors, (45372), 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 10:41:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35167 states to 35167 states and 45372 transitions. [2021-11-04 10:41:46,132 INFO L78 Accepts]: Start accepts. Automaton has 35167 states and 45372 transitions. Word has length 78 [2021-11-04 10:41:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:41:46,133 INFO L470 AbstractCegarLoop]: Abstraction has 35167 states and 45372 transitions. [2021-11-04 10:41:46,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 10:41:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 35167 states and 45372 transitions. [2021-11-04 10:41:46,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-04 10:41:46,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:41:46,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:41:46,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 10:41:46,135 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-04 10:41:46,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:41:46,135 INFO L85 PathProgramCache]: Analyzing trace with hash -40188606, now seen corresponding path program 1 times [2021-11-04 10:41:46,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:41:46,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105939480] [2021-11-04 10:41:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:41:46,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:41:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:41:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:41:46,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:41:46,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105939480] [2021-11-04 10:41:46,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105939480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:41:46,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:41:46,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:41:46,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193153915] [2021-11-04 10:41:46,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:41:46,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:41:46,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:41:46,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:41:46,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:41:46,338 INFO L87 Difference]: Start difference. First operand 35167 states and 45372 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 10:41:48,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:43:59,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:43:59,268 INFO L93 Difference]: Finished difference Result 87209 states and 112611 transitions. [2021-11-04 10:43:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:43:59,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-04 10:43:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:43:59,354 INFO L225 Difference]: With dead ends: 87209 [2021-11-04 10:43:59,354 INFO L226 Difference]: Without dead ends: 52305 [2021-11-04 10:43:59,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:43:59,407 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6391 mSDsluCounter, 6629 mSDsCounter, 0 mSdLazyCounter, 19692 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121433.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6391 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 113.63ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131032.80ms IncrementalHoareTripleChecker+Time [2021-11-04 10:43:59,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6391 Valid, 0 Invalid, 19699 Unknown, 0 Unchecked, 113.63ms Time], IncrementalHoareTripleChecker [6 Valid, 19692 Invalid, 1 Unknown, 0 Unchecked, 131032.80ms Time] [2021-11-04 10:43:59,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52305 states. [2021-11-04 10:44:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52305 to 52212. [2021-11-04 10:44:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52212 states, 52151 states have (on average 1.2928419397518744) internal successors, (67423), 52211 states have internal predecessors, (67423), 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 10:44:00,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52212 states to 52212 states and 67423 transitions. [2021-11-04 10:44:00,371 INFO L78 Accepts]: Start accepts. Automaton has 52212 states and 67423 transitions. Word has length 78 [2021-11-04 10:44:00,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:44:00,371 INFO L470 AbstractCegarLoop]: Abstraction has 52212 states and 67423 transitions. [2021-11-04 10:44:00,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 10:44:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 52212 states and 67423 transitions. [2021-11-04 10:44:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-04 10:44:00,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:44:00,373 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:44:00,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 10:44:00,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-04 10:44:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:44:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1693939489, now seen corresponding path program 1 times [2021-11-04 10:44:00,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:44:00,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709384285] [2021-11-04 10:44:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:44:00,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:44:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:44:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:44:00,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:44:00,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709384285] [2021-11-04 10:44:00,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709384285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:44:00,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:44:00,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:44:00,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420230622] [2021-11-04 10:44:00,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:44:00,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:44:00,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:44:00,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:44:00,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:44:00,704 INFO L87 Difference]: Start difference. First operand 52212 states and 67423 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 10:44:02,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:45:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:45:31,324 INFO L93 Difference]: Finished difference Result 52212 states and 67423 transitions. [2021-11-04 10:45:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:45:31,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 78 [2021-11-04 10:45:31,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:45:31,405 INFO L225 Difference]: With dead ends: 52212 [2021-11-04 10:45:31,405 INFO L226 Difference]: Without dead ends: 52206 [2021-11-04 10:45:31,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 105.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:45:31,424 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6635 mSDsluCounter, 6586 mSDsCounter, 0 mSdLazyCounter, 13355 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82759.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6635 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 158.22ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 13355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89094.98ms IncrementalHoareTripleChecker+Time [2021-11-04 10:45:31,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6635 Valid, 0 Invalid, 13393 Unknown, 0 Unchecked, 158.22ms Time], IncrementalHoareTripleChecker [37 Valid, 13355 Invalid, 1 Unknown, 0 Unchecked, 89094.98ms Time] [2021-11-04 10:45:31,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52206 states. [2021-11-04 10:45:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52206 to 52206. [2021-11-04 10:45:32,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52206 states, 52148 states have (on average 1.2928012579581192) internal successors, (67417), 52205 states have internal predecessors, (67417), 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 10:45:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52206 states to 52206 states and 67417 transitions. [2021-11-04 10:45:32,315 INFO L78 Accepts]: Start accepts. Automaton has 52206 states and 67417 transitions. Word has length 78 [2021-11-04 10:45:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:45:32,315 INFO L470 AbstractCegarLoop]: Abstraction has 52206 states and 67417 transitions. [2021-11-04 10:45:32,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 10:45:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 52206 states and 67417 transitions. [2021-11-04 10:45:32,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-04 10:45:32,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:45:32,316 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:45:32,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 10:45:32,317 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-04 10:45:32,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:45:32,317 INFO L85 PathProgramCache]: Analyzing trace with hash 83393220, now seen corresponding path program 1 times [2021-11-04 10:45:32,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:45:32,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085978732] [2021-11-04 10:45:32,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:45:32,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:45:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:45:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:45:32,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:45:32,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085978732] [2021-11-04 10:45:32,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085978732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:45:32,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:45:32,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:45:32,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056488558] [2021-11-04 10:45:32,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:45:32,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:45:32,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:45:32,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:45:32,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:45:32,614 INFO L87 Difference]: Start difference. First operand 52206 states and 67417 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 10:45:34,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:47:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:47:03,407 INFO L93 Difference]: Finished difference Result 52206 states and 67417 transitions. [2021-11-04 10:47:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:47:03,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 80 [2021-11-04 10:47:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:47:03,504 INFO L225 Difference]: With dead ends: 52206 [2021-11-04 10:47:03,504 INFO L226 Difference]: Without dead ends: 52200 [2021-11-04 10:47:03,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:47:03,522 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6624 mSDsluCounter, 6583 mSDsCounter, 0 mSdLazyCounter, 13343 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82725.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6624 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 114.23ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 13343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89293.25ms IncrementalHoareTripleChecker+Time [2021-11-04 10:47:03,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6624 Valid, 0 Invalid, 13384 Unknown, 0 Unchecked, 114.23ms Time], IncrementalHoareTripleChecker [40 Valid, 13343 Invalid, 1 Unknown, 0 Unchecked, 89293.25ms Time] [2021-11-04 10:47:03,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52200 states. [2021-11-04 10:47:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52200 to 52200. [2021-11-04 10:47:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52200 states, 52145 states have (on average 1.2927605714833637) internal successors, (67411), 52199 states have internal predecessors, (67411), 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 10:47:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52200 states to 52200 states and 67411 transitions. [2021-11-04 10:47:04,724 INFO L78 Accepts]: Start accepts. Automaton has 52200 states and 67411 transitions. Word has length 80 [2021-11-04 10:47:04,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:47:04,724 INFO L470 AbstractCegarLoop]: Abstraction has 52200 states and 67411 transitions. [2021-11-04 10:47:04,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 10:47:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 52200 states and 67411 transitions. [2021-11-04 10:47:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-04 10:47:04,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:47:04,730 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:47:04,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 10:47:04,731 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-04 10:47:04,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:47:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1463344409, now seen corresponding path program 1 times [2021-11-04 10:47:04,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:47:04,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121192129] [2021-11-04 10:47:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:47:04,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:47:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:47:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:47:05,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:47:05,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121192129] [2021-11-04 10:47:05,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121192129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:47:05,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:47:05,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:47:05,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747039766] [2021-11-04 10:47:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:47:05,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:47:05,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:47:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:47:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:47:05,352 INFO L87 Difference]: Start difference. First operand 52200 states and 67411 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 10:47:07,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15