./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.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 b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:04:45,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:04:45,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:04:45,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:04:45,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:04:45,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:04:45,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:04:45,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:04:45,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:04:45,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:04:45,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:04:45,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:04:45,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:04:45,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:04:45,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:04:45,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:04:45,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:04:45,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:04:45,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:04:45,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:04:45,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:04:45,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:04:45,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:04:45,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:04:45,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:04:45,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:04:45,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:04:45,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:04:45,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:04:45,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:04:45,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:04:45,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:04:45,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:04:45,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:04:45,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:04:45,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:04:45,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:04:45,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:04:45,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:04:45,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:04:45,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:04:45,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:04:45,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:04:45,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:04:45,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:04:45,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:04:45,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:04:45,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:04:45,600 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:04:45,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:04:45,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:04:45,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:04:45,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:04:45,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:04:45,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:04:45,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:04:45,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:04:45,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:04:45,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:04:45,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:04:45,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:04:45,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:04:45,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:04:45,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:04:45,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:04:45,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:04:45,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:04:45,603 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:04:45,604 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:04:45,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:04:45,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:04:45,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 [2021-11-06 20:04:45,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:04:45,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:04:45,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:04:45,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:04:45,860 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:04:45,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-06 20:04:45,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823f5eadd/a2e04142fb2a497580101360fb0d66a6/FLAGa79f48b5b [2021-11-06 20:04:46,528 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:04:46,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-06 20:04:46,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823f5eadd/a2e04142fb2a497580101360fb0d66a6/FLAGa79f48b5b [2021-11-06 20:04:46,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823f5eadd/a2e04142fb2a497580101360fb0d66a6 [2021-11-06 20:04:46,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:04:46,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:04:46,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:04:46,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:04:46,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:04:46,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:04:46" (1/1) ... [2021-11-06 20:04:46,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd93b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:46, skipping insertion in model container [2021-11-06 20:04:46,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:04:46" (1/1) ... [2021-11-06 20:04:46,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:04:47,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:04:48,408 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2021-11-06 20:04:48,412 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2021-11-06 20:04:48,413 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2021-11-06 20:04:48,413 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2021-11-06 20:04:48,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:04:48,476 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:04:48,738 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2021-11-06 20:04:48,739 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2021-11-06 20:04:48,739 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2021-11-06 20:04:48,739 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2021-11-06 20:04:48,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:04:48,853 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:04:48,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48 WrapperNode [2021-11-06 20:04:48,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:04:48,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:04:48,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:04:48,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:04:48,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (1/1) ... [2021-11-06 20:04:48,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (1/1) ... [2021-11-06 20:04:49,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:04:49,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:04:49,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:04:49,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:04:49,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (1/1) ... [2021-11-06 20:04:49,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (1/1) ... [2021-11-06 20:04:49,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (1/1) ... [2021-11-06 20:04:49,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (1/1) ... [2021-11-06 20:04:50,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (1/1) ... [2021-11-06 20:04:50,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (1/1) ... [2021-11-06 20:04:50,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (1/1) ... [2021-11-06 20:04:50,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:04:50,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:04:50,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:04:50,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:04:50,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (1/1) ... [2021-11-06 20:04:50,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:04:50,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:04:50,389 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) [2021-11-06 20:04:50,430 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 [2021-11-06 20:04:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:04:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:04:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:04:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:04:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:04:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:04:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:04:50,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:04:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:04:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:04:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:04:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:04:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:04:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:04:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:05:00,106 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:05:00,107 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 20:05:00,107 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:05:00,108 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:05:00,108 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:05:00,109 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:05:00,147 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:05:00,147 INFO L299 CfgBuilder]: Removed 10552 assume(true) statements. [2021-11-06 20:05:00,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:05:00 BoogieIcfgContainer [2021-11-06 20:05:00,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:05:00,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:05:00,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:05:00,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:05:00,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:04:46" (1/3) ... [2021-11-06 20:05:00,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c312a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:05:00, skipping insertion in model container [2021-11-06 20:05:00,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:48" (2/3) ... [2021-11-06 20:05:00,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c312a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:05:00, skipping insertion in model container [2021-11-06 20:05:00,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:05:00" (3/3) ... [2021-11-06 20:05:00,161 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-06 20:05:00,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:05:00,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-11-06 20:05:00,212 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:05:00,216 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 [2021-11-06 20:05:00,216 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-11-06 20:05:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 6856 states, 6791 states have (on average 1.2098365483728464) internal successors, (8216), 6855 states have internal predecessors, (8216), 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) [2021-11-06 20:05:00,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 20:05:00,283 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:00,284 INFO L513 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] [2021-11-06 20:05:00,285 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-06 20:05:00,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1312456937, now seen corresponding path program 1 times [2021-11-06 20:05:00,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:00,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080532625] [2021-11-06 20:05:00,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:00,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:00,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:00,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080532625] [2021-11-06 20:05:00,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080532625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:00,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:00,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:00,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186087923] [2021-11-06 20:05:00,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:00,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:00,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:00,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:00,764 INFO L87 Difference]: Start difference. First operand has 6856 states, 6791 states have (on average 1.2098365483728464) internal successors, (8216), 6855 states have internal predecessors, (8216), 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 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-06 20:05:03,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:03,352 INFO L93 Difference]: Finished difference Result 19983 states and 23887 transitions. [2021-11-06 20:05:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:03,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-06 20:05:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:03,413 INFO L225 Difference]: With dead ends: 19983 [2021-11-06 20:05:03,413 INFO L226 Difference]: Without dead ends: 12939 [2021-11-06 20:05:03,434 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12939 states. [2021-11-06 20:05:03,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12939 to 12413. [2021-11-06 20:05:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12413 states, 12348 states have (on average 1.1755749919015226) internal successors, (14516), 12412 states have internal predecessors, (14516), 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) [2021-11-06 20:05:03,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12413 states to 12413 states and 14516 transitions. [2021-11-06 20:05:03,967 INFO L78 Accepts]: Start accepts. Automaton has 12413 states and 14516 transitions. Word has length 43 [2021-11-06 20:05:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:03,967 INFO L470 AbstractCegarLoop]: Abstraction has 12413 states and 14516 transitions. [2021-11-06 20:05:03,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-06 20:05:03,968 INFO L276 IsEmpty]: Start isEmpty. Operand 12413 states and 14516 transitions. [2021-11-06 20:05:03,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 20:05:03,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:03,970 INFO L513 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] [2021-11-06 20:05:03,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:05:03,970 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-06 20:05:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash 452358301, now seen corresponding path program 1 times [2021-11-06 20:05:03,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:03,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236142777] [2021-11-06 20:05:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:03,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:04,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:04,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236142777] [2021-11-06 20:05:04,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236142777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:04,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:04,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:04,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340174448] [2021-11-06 20:05:04,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:04,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:04,101 INFO L87 Difference]: Start difference. First operand 12413 states and 14516 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-06 20:05:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:05,768 INFO L93 Difference]: Finished difference Result 34172 states and 40034 transitions. [2021-11-06 20:05:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:05,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-06 20:05:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:05,845 INFO L225 Difference]: With dead ends: 34172 [2021-11-06 20:05:05,845 INFO L226 Difference]: Without dead ends: 21835 [2021-11-06 20:05:05,870 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21835 states. [2021-11-06 20:05:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21835 to 21555. [2021-11-06 20:05:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21555 states, 21490 states have (on average 1.1789204281060959) internal successors, (25335), 21554 states have internal predecessors, (25335), 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) [2021-11-06 20:05:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21555 states to 21555 states and 25335 transitions. [2021-11-06 20:05:06,557 INFO L78 Accepts]: Start accepts. Automaton has 21555 states and 25335 transitions. Word has length 45 [2021-11-06 20:05:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:06,558 INFO L470 AbstractCegarLoop]: Abstraction has 21555 states and 25335 transitions. [2021-11-06 20:05:06,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-06 20:05:06,559 INFO L276 IsEmpty]: Start isEmpty. Operand 21555 states and 25335 transitions. [2021-11-06 20:05:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 20:05:06,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:06,564 INFO L513 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] [2021-11-06 20:05:06,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:05:06,569 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-06 20:05:06,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:06,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1773104503, now seen corresponding path program 1 times [2021-11-06 20:05:06,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:06,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042640331] [2021-11-06 20:05:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:06,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:06,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:06,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042640331] [2021-11-06 20:05:06,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042640331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:06,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:06,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:06,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10315713] [2021-11-06 20:05:06,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:06,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:06,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:06,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:06,709 INFO L87 Difference]: Start difference. First operand 21555 states and 25335 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-06 20:05:09,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:09,602 INFO L93 Difference]: Finished difference Result 64155 states and 75438 transitions. [2021-11-06 20:05:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:09,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-06 20:05:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:09,679 INFO L225 Difference]: With dead ends: 64155 [2021-11-06 20:05:09,680 INFO L226 Difference]: Without dead ends: 42676 [2021-11-06 20:05:09,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:09,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42676 states. [2021-11-06 20:05:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42676 to 42624. [2021-11-06 20:05:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42624 states, 42559 states have (on average 1.178082191780822) internal successors, (50138), 42623 states have internal predecessors, (50138), 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) [2021-11-06 20:05:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42624 states to 42624 states and 50138 transitions. [2021-11-06 20:05:10,732 INFO L78 Accepts]: Start accepts. Automaton has 42624 states and 50138 transitions. Word has length 46 [2021-11-06 20:05:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:10,733 INFO L470 AbstractCegarLoop]: Abstraction has 42624 states and 50138 transitions. [2021-11-06 20:05:10,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-06 20:05:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 42624 states and 50138 transitions. [2021-11-06 20:05:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 20:05:10,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:10,734 INFO L513 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] [2021-11-06 20:05:10,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:05:10,734 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-06 20:05:10,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1413293794, now seen corresponding path program 1 times [2021-11-06 20:05:10,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:10,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066741444] [2021-11-06 20:05:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:10,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:10,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:10,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066741444] [2021-11-06 20:05:10,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066741444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:10,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:10,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:10,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124134563] [2021-11-06 20:05:10,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:10,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:10,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:10,844 INFO L87 Difference]: Start difference. First operand 42624 states and 50138 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-06 20:05:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:13,001 INFO L93 Difference]: Finished difference Result 71681 states and 84729 transitions. [2021-11-06 20:05:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-06 20:05:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:13,068 INFO L225 Difference]: With dead ends: 71681 [2021-11-06 20:05:13,068 INFO L226 Difference]: Without dead ends: 29133 [2021-11-06 20:05:13,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:13,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29133 states. [2021-11-06 20:05:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29133 to 29011. [2021-11-06 20:05:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29011 states, 28946 states have (on average 1.1910108477855317) internal successors, (34475), 29010 states have internal predecessors, (34475), 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) [2021-11-06 20:05:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29011 states to 29011 states and 34475 transitions. [2021-11-06 20:05:13,808 INFO L78 Accepts]: Start accepts. Automaton has 29011 states and 34475 transitions. Word has length 49 [2021-11-06 20:05:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:13,808 INFO L470 AbstractCegarLoop]: Abstraction has 29011 states and 34475 transitions. [2021-11-06 20:05:13,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-06 20:05:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 29011 states and 34475 transitions. [2021-11-06 20:05:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 20:05:13,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:13,810 INFO L513 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] [2021-11-06 20:05:13,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:05:13,811 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-06 20:05:13,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash 354775553, now seen corresponding path program 1 times [2021-11-06 20:05:13,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:13,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214764225] [2021-11-06 20:05:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:13,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:13,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:13,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214764225] [2021-11-06 20:05:13,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214764225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:13,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:13,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:13,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069331267] [2021-11-06 20:05:13,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:13,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:13,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:13,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:13,921 INFO L87 Difference]: Start difference. First operand 29011 states and 34475 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) [2021-11-06 20:05:16,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:16,896 INFO L93 Difference]: Finished difference Result 80074 states and 94609 transitions. [2021-11-06 20:05:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:16,897 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 [2021-11-06 20:05:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:16,996 INFO L225 Difference]: With dead ends: 80074 [2021-11-06 20:05:16,997 INFO L226 Difference]: Without dead ends: 51139 [2021-11-06 20:05:17,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51139 states. [2021-11-06 20:05:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51139 to 50690. [2021-11-06 20:05:18,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50690 states, 50625 states have (on average 1.1794172839506172) internal successors, (59708), 50689 states have internal predecessors, (59708), 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) [2021-11-06 20:05:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50690 states to 50690 states and 59708 transitions. [2021-11-06 20:05:18,073 INFO L78 Accepts]: Start accepts. Automaton has 50690 states and 59708 transitions. Word has length 52 [2021-11-06 20:05:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:18,074 INFO L470 AbstractCegarLoop]: Abstraction has 50690 states and 59708 transitions. [2021-11-06 20:05:18,075 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) [2021-11-06 20:05:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 50690 states and 59708 transitions. [2021-11-06 20:05:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 20:05:18,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:18,079 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 20:05:18,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:05:18,080 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-06 20:05:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:18,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1310411076, now seen corresponding path program 1 times [2021-11-06 20:05:18,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:18,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577110955] [2021-11-06 20:05:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:18,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:18,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:18,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577110955] [2021-11-06 20:05:18,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577110955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:18,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:18,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:18,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474408435] [2021-11-06 20:05:18,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:18,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:18,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:18,193 INFO L87 Difference]: Start difference. First operand 50690 states and 59708 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-06 20:05:21,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:21,994 INFO L93 Difference]: Finished difference Result 149133 states and 175755 transitions. [2021-11-06 20:05:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:21,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-06 20:05:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:22,237 INFO L225 Difference]: With dead ends: 149133 [2021-11-06 20:05:22,240 INFO L226 Difference]: Without dead ends: 98519 [2021-11-06 20:05:22,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98519 states. [2021-11-06 20:05:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98519 to 98197. [2021-11-06 20:05:24,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98197 states, 98132 states have (on average 1.179900542126931) internal successors, (115786), 98196 states have internal predecessors, (115786), 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) [2021-11-06 20:05:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98197 states to 98197 states and 115786 transitions. [2021-11-06 20:05:24,716 INFO L78 Accepts]: Start accepts. Automaton has 98197 states and 115786 transitions. Word has length 60 [2021-11-06 20:05:24,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:24,717 INFO L470 AbstractCegarLoop]: Abstraction has 98197 states and 115786 transitions. [2021-11-06 20:05:24,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-06 20:05:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 98197 states and 115786 transitions. [2021-11-06 20:05:24,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 20:05:24,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:24,718 INFO L513 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] [2021-11-06 20:05:24,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:05:24,718 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-06 20:05:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash -83004131, now seen corresponding path program 1 times [2021-11-06 20:05:24,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:24,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781154788] [2021-11-06 20:05:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:24,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:24,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:24,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781154788] [2021-11-06 20:05:24,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781154788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:24,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:24,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 20:05:24,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258135459] [2021-11-06 20:05:24,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:24,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:24,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:24,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:24,872 INFO L87 Difference]: Start difference. First operand 98197 states and 115786 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-06 20:05:28,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:28,281 INFO L93 Difference]: Finished difference Result 294337 states and 347072 transitions. [2021-11-06 20:05:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:28,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-06 20:05:28,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:28,680 INFO L225 Difference]: With dead ends: 294337 [2021-11-06 20:05:28,681 INFO L226 Difference]: Without dead ends: 196267 [2021-11-06 20:05:29,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196267 states. [2021-11-06 20:05:33,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196267 to 196049. [2021-11-06 20:05:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196049 states, 195984 states have (on average 1.1750244917952486) internal successors, (230286), 196048 states have internal predecessors, (230286), 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) [2021-11-06 20:05:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196049 states to 196049 states and 230286 transitions. [2021-11-06 20:05:33,913 INFO L78 Accepts]: Start accepts. Automaton has 196049 states and 230286 transitions. Word has length 81 [2021-11-06 20:05:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:33,915 INFO L470 AbstractCegarLoop]: Abstraction has 196049 states and 230286 transitions. [2021-11-06 20:05:33,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-06 20:05:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 196049 states and 230286 transitions. [2021-11-06 20:05:33,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 20:05:33,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:33,921 INFO L513 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] [2021-11-06 20:05:33,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 20:05:33,921 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-06 20:05:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash -477370917, now seen corresponding path program 1 times [2021-11-06 20:05:33,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:33,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109796928] [2021-11-06 20:05:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:33,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:34,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:34,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109796928] [2021-11-06 20:05:34,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109796928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:34,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:34,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 20:05:34,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288775443] [2021-11-06 20:05:34,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:34,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:34,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:34,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:34,029 INFO L87 Difference]: Start difference. First operand 196049 states and 230286 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-06 20:05:37,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:37,084 INFO L93 Difference]: Finished difference Result 294119 states and 344975 transitions. [2021-11-06 20:05:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:37,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-06 20:05:37,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:37,512 INFO L225 Difference]: With dead ends: 294119 [2021-11-06 20:05:37,512 INFO L226 Difference]: Without dead ends: 98197 [2021-11-06 20:05:37,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98197 states.