./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-hippi-rrunner.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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.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 10193951df4eb6f67d99eaaa8758acfa57b6461ca38071389a41cbdc5c585dfb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:05:25,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:05:25,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:05:25,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:05:25,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:05:25,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:05:25,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:05:25,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:05:25,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:05:25,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:05:25,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:05:25,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:05:25,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:05:25,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:05:25,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:05:25,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:05:25,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:05:25,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:05:25,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:05:25,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:05:25,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:05:25,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:05:25,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:05:25,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:05:25,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:05:25,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:05:25,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:05:25,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:05:25,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:05:25,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:05:25,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:05:25,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:05:25,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:05:25,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:05:25,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:05:25,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:05:25,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:05:25,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:05:25,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:05:25,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:05:25,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:05:25,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:05:25,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:05:25,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:05:25,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:05:25,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:05:25,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:05:25,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:05:25,451 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:05:25,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:05:25,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:05:25,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:05:25,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:05:25,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:05:25,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:05:25,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:05:25,452 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:05:25,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:05:25,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:05:25,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:05:25,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:05:25,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:05:25,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:05:25,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:05:25,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:05:25,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:05:25,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:05:25,453 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:05:25,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:05:25,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:05:25,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:05:25,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10193951df4eb6f67d99eaaa8758acfa57b6461ca38071389a41cbdc5c585dfb [2021-11-06 19:05:25,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:05:25,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:05:25,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:05:25,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:05:25,664 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:05:25,665 INFO L432 ainManager$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-hippi-rrunner.cil.i [2021-11-06 19:05:25,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e56104f2/1efc6da5f12e43fc9f2d8162677f0a3a/FLAGf8169ebe7 [2021-11-06 19:05:26,331 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:05:26,332 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-hippi-rrunner.cil.i [2021-11-06 19:05:26,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e56104f2/1efc6da5f12e43fc9f2d8162677f0a3a/FLAGf8169ebe7 [2021-11-06 19:05:26,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e56104f2/1efc6da5f12e43fc9f2d8162677f0a3a [2021-11-06 19:05:26,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:05:26,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:05:26,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:05:26,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:05:26,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:05:26,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:05:26" (1/1) ... [2021-11-06 19:05:26,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c767b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:26, skipping insertion in model container [2021-11-06 19:05:26,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:05:26" (1/1) ... [2021-11-06 19:05:26,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:05:26,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:05:28,747 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-hippi-rrunner.cil.i[341176,341189] [2021-11-06 19:05:28,750 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-hippi-rrunner.cil.i[341345,341358] [2021-11-06 19:05:28,750 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-hippi-rrunner.cil.i[341512,341525] [2021-11-06 19:05:28,750 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-hippi-rrunner.cil.i[341680,341693] [2021-11-06 19:05:28,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:05:28,784 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:05:29,021 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-hippi-rrunner.cil.i[341176,341189] [2021-11-06 19:05:29,021 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-hippi-rrunner.cil.i[341345,341358] [2021-11-06 19:05:29,022 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-hippi-rrunner.cil.i[341512,341525] [2021-11-06 19:05:29,023 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-hippi-rrunner.cil.i[341680,341693] [2021-11-06 19:05:29,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:05:29,130 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:05:29,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29 WrapperNode [2021-11-06 19:05:29,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:05:29,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:05:29,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:05:29,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:05:29,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (1/1) ... [2021-11-06 19:05:29,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (1/1) ... [2021-11-06 19:05:29,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:05:29,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:05:29,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:05:29,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:05:29,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (1/1) ... [2021-11-06 19:05:29,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (1/1) ... [2021-11-06 19:05:29,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (1/1) ... [2021-11-06 19:05:29,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (1/1) ... [2021-11-06 19:05:29,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (1/1) ... [2021-11-06 19:05:30,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (1/1) ... [2021-11-06 19:05:30,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (1/1) ... [2021-11-06 19:05:30,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:05:30,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:05:30,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:05:30,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:05:30,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (1/1) ... [2021-11-06 19:05:30,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:05:30,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:05:30,206 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 19:05:30,273 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 19:05:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 19:05:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:05:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:05:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:05:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:05:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:05:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:05:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:05:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:05:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:05:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:05:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:05:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:05:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:05:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:05:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:05:39,810 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:05:39,811 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:05:39,811 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:05:39,812 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:05:39,812 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:05:39,828 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:05:39,829 INFO L299 CfgBuilder]: Removed 5367 assume(true) statements. [2021-11-06 19:05:39,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:05:39 BoogieIcfgContainer [2021-11-06 19:05:39,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:05:39,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:05:39,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:05:39,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:05:39,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:05:26" (1/3) ... [2021-11-06 19:05:39,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38762238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:05:39, skipping insertion in model container [2021-11-06 19:05:39,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:29" (2/3) ... [2021-11-06 19:05:39,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38762238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:05:39, skipping insertion in model container [2021-11-06 19:05:39,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:05:39" (3/3) ... [2021-11-06 19:05:39,843 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i [2021-11-06 19:05:39,847 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:05:39,847 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-11-06 19:05:39,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:05:39,895 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 19:05:39,895 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-11-06 19:05:39,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 4357 states, 4270 states have (on average 1.2805620608899297) internal successors, (5468), 4356 states have internal predecessors, (5468), 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 19:05:39,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 19:05:39,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:39,946 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] [2021-11-06 19:05:39,946 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash 462445981, now seen corresponding path program 1 times [2021-11-06 19:05:39,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:39,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044853974] [2021-11-06 19:05:39,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:39,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:40,391 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 19:05:40,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:40,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044853974] [2021-11-06 19:05:40,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044853974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:40,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:40,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:40,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972811555] [2021-11-06 19:05:40,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:40,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:40,417 INFO L87 Difference]: Start difference. First operand has 4357 states, 4270 states have (on average 1.2805620608899297) internal successors, (5468), 4356 states have internal predecessors, (5468), 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 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 19:05:42,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:42,967 INFO L93 Difference]: Finished difference Result 12675 states and 15903 transitions. [2021-11-06 19:05:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-06 19:05:42,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:43,013 INFO L225 Difference]: With dead ends: 12675 [2021-11-06 19:05:43,013 INFO L226 Difference]: Without dead ends: 8102 [2021-11-06 19:05:43,026 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 19:05:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8102 states. [2021-11-06 19:05:43,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8102 to 8018. [2021-11-06 19:05:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8018 states, 7931 states have (on average 1.2196444332366663) internal successors, (9673), 8017 states have internal predecessors, (9673), 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 19:05:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 9673 transitions. [2021-11-06 19:05:43,262 INFO L78 Accepts]: Start accepts. Automaton has 8018 states and 9673 transitions. Word has length 39 [2021-11-06 19:05:43,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:43,262 INFO L470 AbstractCegarLoop]: Abstraction has 8018 states and 9673 transitions. [2021-11-06 19:05:43,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 19:05:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 8018 states and 9673 transitions. [2021-11-06 19:05:43,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 19:05:43,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:43,264 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] [2021-11-06 19:05:43,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:05:43,265 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:43,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:43,265 INFO L85 PathProgramCache]: Analyzing trace with hash -958248383, now seen corresponding path program 1 times [2021-11-06 19:05:43,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:43,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902790296] [2021-11-06 19:05:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:43,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:43,378 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 19:05:43,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:43,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902790296] [2021-11-06 19:05:43,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902790296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:43,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:43,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:43,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941782981] [2021-11-06 19:05:43,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:43,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:43,383 INFO L87 Difference]: Start difference. First operand 8018 states and 9673 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 19:05:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:45,859 INFO L93 Difference]: Finished difference Result 23036 states and 27765 transitions. [2021-11-06 19:05:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:45,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-06 19:05:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:45,902 INFO L225 Difference]: With dead ends: 23036 [2021-11-06 19:05:45,902 INFO L226 Difference]: Without dead ends: 15078 [2021-11-06 19:05:45,917 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 19:05:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15078 states. [2021-11-06 19:05:46,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15078 to 13594. [2021-11-06 19:05:46,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13594 states, 13507 states have (on average 1.2146294513955727) internal successors, (16406), 13593 states have internal predecessors, (16406), 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 19:05:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13594 states to 13594 states and 16406 transitions. [2021-11-06 19:05:46,224 INFO L78 Accepts]: Start accepts. Automaton has 13594 states and 16406 transitions. Word has length 39 [2021-11-06 19:05:46,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:46,225 INFO L470 AbstractCegarLoop]: Abstraction has 13594 states and 16406 transitions. [2021-11-06 19:05:46,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 19:05:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 13594 states and 16406 transitions. [2021-11-06 19:05:46,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 19:05:46,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:46,232 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 19:05:46,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:05:46,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:46,233 INFO L85 PathProgramCache]: Analyzing trace with hash 914697269, now seen corresponding path program 1 times [2021-11-06 19:05:46,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:46,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265667635] [2021-11-06 19:05:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:46,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:46,324 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 19:05:46,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:46,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265667635] [2021-11-06 19:05:46,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265667635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:46,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:46,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:46,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451096046] [2021-11-06 19:05:46,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:46,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:46,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:46,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:46,327 INFO L87 Difference]: Start difference. First operand 13594 states and 16406 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 19:05:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:48,439 INFO L93 Difference]: Finished difference Result 23334 states and 28133 transitions. [2021-11-06 19:05:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:48,440 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 19:05:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:48,480 INFO L225 Difference]: With dead ends: 23334 [2021-11-06 19:05:48,480 INFO L226 Difference]: Without dead ends: 9800 [2021-11-06 19:05:48,498 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 19:05:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2021-11-06 19:05:48,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 9692. [2021-11-06 19:05:48,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9692 states, 9605 states have (on average 1.2131181676210308) internal successors, (11652), 9691 states have internal predecessors, (11652), 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 19:05:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9692 states to 9692 states and 11652 transitions. [2021-11-06 19:05:48,686 INFO L78 Accepts]: Start accepts. Automaton has 9692 states and 11652 transitions. Word has length 45 [2021-11-06 19:05:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:48,686 INFO L470 AbstractCegarLoop]: Abstraction has 9692 states and 11652 transitions. [2021-11-06 19:05:48,686 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 19:05:48,686 INFO L276 IsEmpty]: Start isEmpty. Operand 9692 states and 11652 transitions. [2021-11-06 19:05:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 19:05:48,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:48,687 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] [2021-11-06 19:05:48,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:05:48,689 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1176721246, now seen corresponding path program 1 times [2021-11-06 19:05:48,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:48,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907426804] [2021-11-06 19:05:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:48,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:48,810 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 19:05:48,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:48,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907426804] [2021-11-06 19:05:48,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907426804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:48,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:48,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:48,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374059064] [2021-11-06 19:05:48,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:48,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:48,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:48,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:48,812 INFO L87 Difference]: Start difference. First operand 9692 states and 11652 transitions. 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) [2021-11-06 19:05:51,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:51,257 INFO L93 Difference]: Finished difference Result 26135 states and 31509 transitions. [2021-11-06 19:05:51,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:51,258 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 [2021-11-06 19:05:51,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:51,295 INFO L225 Difference]: With dead ends: 26135 [2021-11-06 19:05:51,295 INFO L226 Difference]: Without dead ends: 16503 [2021-11-06 19:05:51,313 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 19:05:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16503 states. [2021-11-06 19:05:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16503 to 16019. [2021-11-06 19:05:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16019 states, 15932 states have (on average 1.2184910871202612) internal successors, (19413), 16018 states have internal predecessors, (19413), 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 19:05:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16019 states to 16019 states and 19413 transitions. [2021-11-06 19:05:51,751 INFO L78 Accepts]: Start accepts. Automaton has 16019 states and 19413 transitions. Word has length 50 [2021-11-06 19:05:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:51,752 INFO L470 AbstractCegarLoop]: Abstraction has 16019 states and 19413 transitions. [2021-11-06 19:05:51,752 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) [2021-11-06 19:05:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 16019 states and 19413 transitions. [2021-11-06 19:05:51,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 19:05:51,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:51,754 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, 1, 1] [2021-11-06 19:05:51,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:05:51,754 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash -853583117, now seen corresponding path program 1 times [2021-11-06 19:05:51,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:51,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728701141] [2021-11-06 19:05:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:51,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:51,864 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 19:05:51,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:51,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728701141] [2021-11-06 19:05:51,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728701141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:51,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:51,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:51,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301909460] [2021-11-06 19:05:51,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:51,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:51,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:51,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:51,867 INFO L87 Difference]: Start difference. First operand 16019 states and 19413 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 19:05:54,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:54,402 INFO L93 Difference]: Finished difference Result 43853 states and 53135 transitions. [2021-11-06 19:05:54,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:54,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2021-11-06 19:05:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:54,461 INFO L225 Difference]: With dead ends: 43853 [2021-11-06 19:05:54,462 INFO L226 Difference]: Without dead ends: 27894 [2021-11-06 19:05:54,487 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 19:05:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27894 states. [2021-11-06 19:05:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27894 to 27277. [2021-11-06 19:05:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27277 states, 27190 states have (on average 1.2166605369621184) internal successors, (33081), 27276 states have internal predecessors, (33081), 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 19:05:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27277 states to 27277 states and 33081 transitions. [2021-11-06 19:05:55,010 INFO L78 Accepts]: Start accepts. Automaton has 27277 states and 33081 transitions. Word has length 54 [2021-11-06 19:05:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:55,010 INFO L470 AbstractCegarLoop]: Abstraction has 27277 states and 33081 transitions. [2021-11-06 19:05:55,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 19:05:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 27277 states and 33081 transitions. [2021-11-06 19:05:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 19:05:55,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:55,012 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, 1, 1, 1, 1, 1] [2021-11-06 19:05:55,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:05:55,012 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:55,013 INFO L85 PathProgramCache]: Analyzing trace with hash 249422810, now seen corresponding path program 1 times [2021-11-06 19:05:55,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:55,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832634124] [2021-11-06 19:05:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:55,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:55,149 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 19:05:55,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:55,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832634124] [2021-11-06 19:05:55,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832634124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:55,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:55,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:55,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996045282] [2021-11-06 19:05:55,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:55,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:55,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:55,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:55,154 INFO L87 Difference]: Start difference. First operand 27277 states and 33081 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:58,101 INFO L93 Difference]: Finished difference Result 80570 states and 97786 transitions. [2021-11-06 19:05:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:58,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-06 19:05:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:58,225 INFO L225 Difference]: With dead ends: 80570 [2021-11-06 19:05:58,226 INFO L226 Difference]: Without dead ends: 53353 [2021-11-06 19:05:58,277 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 19:05:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53353 states. [2021-11-06 19:05:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53353 to 52979. [2021-11-06 19:05:59,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52979 states, 52892 states have (on average 1.217424185131967) internal successors, (64392), 52978 states have internal predecessors, (64392), 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 19:05:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52979 states to 52979 states and 64392 transitions. [2021-11-06 19:05:59,515 INFO L78 Accepts]: Start accepts. Automaton has 52979 states and 64392 transitions. Word has length 65 [2021-11-06 19:05:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:59,515 INFO L470 AbstractCegarLoop]: Abstraction has 52979 states and 64392 transitions. [2021-11-06 19:05:59,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 52979 states and 64392 transitions. [2021-11-06 19:05:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 19:05:59,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:59,517 INFO L513 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] [2021-11-06 19:05:59,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:05:59,517 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:59,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:59,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1844241805, now seen corresponding path program 1 times [2021-11-06 19:05:59,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:59,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102435138] [2021-11-06 19:05:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:59,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:05:59,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:59,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102435138] [2021-11-06 19:05:59,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102435138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:59,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:59,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:59,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847937428] [2021-11-06 19:05:59,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:59,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:59,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:59,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:59,605 INFO L87 Difference]: Start difference. First operand 52979 states and 64392 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:06:03,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:03,443 INFO L93 Difference]: Finished difference Result 157513 states and 191567 transitions. [2021-11-06 19:06:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:03,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-06 19:06:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:03,681 INFO L225 Difference]: With dead ends: 157513 [2021-11-06 19:06:03,682 INFO L226 Difference]: Without dead ends: 104645 [2021-11-06 19:06:03,783 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 19:06:04,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104645 states. [2021-11-06 19:06:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104645 to 104561. [2021-11-06 19:06:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104561 states, 104474 states have (on average 1.2165514864942473) internal successors, (127098), 104560 states have internal predecessors, (127098), 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 19:06:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104561 states to 104561 states and 127098 transitions. [2021-11-06 19:06:06,547 INFO L78 Accepts]: Start accepts. Automaton has 104561 states and 127098 transitions. Word has length 68 [2021-11-06 19:06:06,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:06,547 INFO L470 AbstractCegarLoop]: Abstraction has 104561 states and 127098 transitions. [2021-11-06 19:06:06,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:06:06,548 INFO L276 IsEmpty]: Start isEmpty. Operand 104561 states and 127098 transitions. [2021-11-06 19:06:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 19:06:06,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:06,549 INFO L513 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] [2021-11-06 19:06:06,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:06:06,549 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:06:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:06,549 INFO L85 PathProgramCache]: Analyzing trace with hash 564378127, now seen corresponding path program 1 times [2021-11-06 19:06:06,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:06,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418563553] [2021-11-06 19:06:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:06,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:06,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:06,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418563553] [2021-11-06 19:06:06,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418563553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:06,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:06,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:06,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412882902] [2021-11-06 19:06:06,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:06,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:06,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:06,789 INFO L87 Difference]: Start difference. First operand 104561 states and 127098 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:06:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:11,741 INFO L93 Difference]: Finished difference Result 260709 states and 317043 transitions. [2021-11-06 19:06:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:11,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-06 19:06:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:12,255 INFO L225 Difference]: With dead ends: 260709 [2021-11-06 19:06:12,256 INFO L226 Difference]: Without dead ends: 156259 [2021-11-06 19:06:12,384 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 19:06:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156259 states. [2021-11-06 19:06:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156259 to 155958. [2021-11-06 19:06:15,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155958 states, 155871 states have (on average 1.216512372410519) internal successors, (189619), 155957 states have internal predecessors, (189619), 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 19:06:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155958 states to 155958 states and 189619 transitions. [2021-11-06 19:06:16,270 INFO L78 Accepts]: Start accepts. Automaton has 155958 states and 189619 transitions. Word has length 68 [2021-11-06 19:06:16,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:16,271 INFO L470 AbstractCegarLoop]: Abstraction has 155958 states and 189619 transitions. [2021-11-06 19:06:16,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:06:16,271 INFO L276 IsEmpty]: Start isEmpty. Operand 155958 states and 189619 transitions. [2021-11-06 19:06:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 19:06:16,272 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:16,272 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] [2021-11-06 19:06:16,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:06:16,272 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:06:16,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2074886486, now seen corresponding path program 1 times [2021-11-06 19:06:16,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:16,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671098523] [2021-11-06 19:06:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:16,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:06:16,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:16,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671098523] [2021-11-06 19:06:16,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671098523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:16,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:16,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:16,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875606147] [2021-11-06 19:06:16,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:06:16,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:06:16,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:06:16,396 INFO L87 Difference]: Start difference. First operand 155958 states and 189619 transitions. Second operand has 4 states, 4 states have (on average 15.0) 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 19:06:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:19,239 INFO L93 Difference]: Finished difference Result 155958 states and 189619 transitions. [2021-11-06 19:06:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:06:19,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) 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 69 [2021-11-06 19:06:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:19,555 INFO L225 Difference]: With dead ends: 155958 [2021-11-06 19:06:19,556 INFO L226 Difference]: Without dead ends: 155952 [2021-11-06 19:06:19,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:06:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155952 states. [2021-11-06 19:06:23,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155952 to 155952. [2021-11-06 19:06:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155952 states, 155868 states have (on average 1.216497292580902) internal successors, (189613), 155951 states have internal predecessors, (189613), 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 19:06:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155952 states to 155952 states and 189613 transitions. [2021-11-06 19:06:23,491 INFO L78 Accepts]: Start accepts. Automaton has 155952 states and 189613 transitions. Word has length 69 [2021-11-06 19:06:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:23,491 INFO L470 AbstractCegarLoop]: Abstraction has 155952 states and 189613 transitions. [2021-11-06 19:06:23,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) 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 19:06:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 155952 states and 189613 transitions. [2021-11-06 19:06:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 19:06:23,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:23,493 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] [2021-11-06 19:06:23,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:06:23,493 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:06:23,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1101234713, now seen corresponding path program 1 times [2021-11-06 19:06:23,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:23,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290803229] [2021-11-06 19:06:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:23,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:06:23,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:23,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290803229] [2021-11-06 19:06:23,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290803229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:23,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:23,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:23,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602194928] [2021-11-06 19:06:23,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:06:23,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:23,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:06:23,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:06:23,621 INFO L87 Difference]: Start difference. First operand 155952 states and 189613 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 19:06:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:26,786 INFO L93 Difference]: Finished difference Result 155952 states and 189613 transitions. [2021-11-06 19:06:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:06:26,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 71 [2021-11-06 19:06:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:27,113 INFO L225 Difference]: With dead ends: 155952 [2021-11-06 19:06:27,113 INFO L226 Difference]: Without dead ends: 155946 [2021-11-06 19:06:27,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:06:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155946 states.