./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.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_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.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 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 21:11:37,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 21:11:37,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 21:11:37,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 21:11:37,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 21:11:37,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 21:11:37,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 21:11:37,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 21:11:37,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 21:11:37,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 21:11:37,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 21:11:37,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 21:11:37,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 21:11:37,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 21:11:37,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 21:11:37,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 21:11:37,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 21:11:37,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 21:11:37,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 21:11:37,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 21:11:37,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 21:11:37,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 21:11:37,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 21:11:37,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 21:11:37,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 21:11:37,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 21:11:37,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 21:11:37,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 21:11:37,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 21:11:37,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 21:11:37,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 21:11:37,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 21:11:37,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 21:11:37,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 21:11:37,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 21:11:37,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 21:11:37,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 21:11:37,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 21:11:37,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 21:11:37,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 21:11:37,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 21:11:38,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 21:11:38,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 21:11:38,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 21:11:38,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 21:11:38,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 21:11:38,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 21:11:38,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 21:11:38,036 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 21:11:38,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 21:11:38,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 21:11:38,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 21:11:38,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 21:11:38,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 21:11:38,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 21:11:38,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 21:11:38,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 21:11:38,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 21:11:38,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 21:11:38,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 21:11:38,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 21:11:38,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 21:11:38,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 21:11:38,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 21:11:38,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 21:11:38,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 21:11:38,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 21:11:38,040 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 21:11:38,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 21:11:38,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 21:11:38,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 21:11:38,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 [2021-11-06 21:11:38,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 21:11:38,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 21:11:38,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 21:11:38,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 21:11:38,283 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 21:11:38,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-06 21:11:38,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb053f087/38dfc0deb64e4d79ab9ecf6d40644301/FLAG1f9d14d72 [2021-11-06 21:11:39,142 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 21:11:39,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-06 21:11:39,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb053f087/38dfc0deb64e4d79ab9ecf6d40644301/FLAG1f9d14d72 [2021-11-06 21:11:39,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb053f087/38dfc0deb64e4d79ab9ecf6d40644301 [2021-11-06 21:11:39,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 21:11:39,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 21:11:39,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 21:11:39,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 21:11:39,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 21:11:39,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:11:39" (1/1) ... [2021-11-06 21:11:39,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c885d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:39, skipping insertion in model container [2021-11-06 21:11:39,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:11:39" (1/1) ... [2021-11-06 21:11:39,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 21:11:39,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 21:11:43,654 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_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2021-11-06 21:11:43,658 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_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2021-11-06 21:11:43,659 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_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2021-11-06 21:11:43,659 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_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2021-11-06 21:11:43,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 21:11:43,737 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 21:11:44,167 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_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2021-11-06 21:11:44,168 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_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2021-11-06 21:11:44,169 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_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2021-11-06 21:11:44,169 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_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2021-11-06 21:11:44,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 21:11:44,345 INFO L208 MainTranslator]: Completed translation [2021-11-06 21:11:44,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44 WrapperNode [2021-11-06 21:11:44,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 21:11:44,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 21:11:44,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 21:11:44,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 21:11:44,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (1/1) ... [2021-11-06 21:11:44,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (1/1) ... [2021-11-06 21:11:46,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 21:11:46,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 21:11:46,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 21:11:46,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 21:11:46,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (1/1) ... [2021-11-06 21:11:46,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (1/1) ... [2021-11-06 21:11:47,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (1/1) ... [2021-11-06 21:11:47,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (1/1) ... [2021-11-06 21:11:49,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (1/1) ... [2021-11-06 21:11:49,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (1/1) ... [2021-11-06 21:11:49,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (1/1) ... [2021-11-06 21:11:50,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 21:11:50,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 21:11:50,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 21:11:50,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 21:11:50,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (1/1) ... [2021-11-06 21:11:50,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 21:11:50,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:11:50,469 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 21:11:50,535 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 21:11:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2021-11-06 21:11:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2021-11-06 21:11:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2021-11-06 21:11:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2021-11-06 21:11:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2021-11-06 21:11:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2021-11-06 21:11:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2021-11-06 21:11:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2021-11-06 21:11:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-06 21:11:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 21:11:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 21:11:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 21:11:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 21:11:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2021-11-06 21:11:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2021-11-06 21:11:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 21:11:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 21:11:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 21:11:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 21:11:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2021-11-06 21:11:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2021-11-06 21:11:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 21:11:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 21:11:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2021-11-06 21:11:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2021-11-06 21:11:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 21:11:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 21:11:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2021-11-06 21:11:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2021-11-06 21:11:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2021-11-06 21:11:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2021-11-06 21:11:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2021-11-06 21:11:50,607 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2021-11-06 21:11:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2021-11-06 21:11:50,607 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2021-11-06 21:11:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 21:11:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2021-11-06 21:11:50,607 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2021-11-06 21:11:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2021-11-06 21:11:50,607 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2021-11-06 21:11:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 21:11:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2021-11-06 21:11:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2021-11-06 21:11:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-06 21:11:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-06 21:11:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 21:11:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2021-11-06 21:11:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2021-11-06 21:11:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2021-11-06 21:11:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2021-11-06 21:11:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2021-11-06 21:11:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2021-11-06 21:11:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 21:11:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2021-11-06 21:11:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2021-11-06 21:11:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2021-11-06 21:11:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2021-11-06 21:11:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2021-11-06 21:11:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2021-11-06 21:11:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 21:11:50,610 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 21:12:37,032 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L15087: #t~ret2822 := main_#res; [2021-11-06 21:12:37,034 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_pci_pci_instance_5_switch_break: call ULTIMATE.dealloc(ldv_pci_pci_instance_5_~#ldv_5_resource_pm_message~0.base, ldv_pci_pci_instance_5_~#ldv_5_resource_pm_message~0.offset);havoc ldv_pci_pci_instance_5_~#ldv_5_resource_pm_message~0.base, ldv_pci_pci_instance_5_~#ldv_5_resource_pm_message~0.offset; [2021-11-06 21:12:37,034 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 21:12:37,034 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_17_returnLabel: main_#res := 0; [2021-11-06 21:12:37,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 21:12:37,360 INFO L299 CfgBuilder]: Removed 22116 assume(true) statements. [2021-11-06 21:12:37,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:12:37 BoogieIcfgContainer [2021-11-06 21:12:37,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 21:12:37,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 21:12:37,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 21:12:37,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 21:12:37,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:11:39" (1/3) ... [2021-11-06 21:12:37,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e329e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:12:37, skipping insertion in model container [2021-11-06 21:12:37,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:44" (2/3) ... [2021-11-06 21:12:37,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e329e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:12:37, skipping insertion in model container [2021-11-06 21:12:37,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:12:37" (3/3) ... [2021-11-06 21:12:37,383 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-06 21:12:37,387 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 21:12:37,387 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2021-11-06 21:12:37,475 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 21:12:37,483 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 21:12:37,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2021-11-06 21:12:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 17871 states, 17664 states have (on average 1.296875) internal successors, (22908), 17762 states have internal predecessors, (22908), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-06 21:12:37,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:37,698 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] [2021-11-06 21:12:37,698 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:37,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1867274467, now seen corresponding path program 1 times [2021-11-06 21:12:37,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:37,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300119510] [2021-11-06 21:12:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:37,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:38,372 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 21:12:38,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:38,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300119510] [2021-11-06 21:12:38,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300119510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:38,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:38,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:38,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593396909] [2021-11-06 21:12:38,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:38,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:38,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:38,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:38,437 INFO L87 Difference]: Start difference. First operand has 17871 states, 17664 states have (on average 1.296875) internal successors, (22908), 17762 states have internal predecessors, (22908), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 21:12:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:39,397 INFO L93 Difference]: Finished difference Result 35247 states and 45595 transitions. [2021-11-06 21:12:39,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-06 21:12:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:39,505 INFO L225 Difference]: With dead ends: 35247 [2021-11-06 21:12:39,506 INFO L226 Difference]: Without dead ends: 17268 [2021-11-06 21:12:39,693 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 21:12:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17268 states. [2021-11-06 21:12:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17268 to 17268. [2021-11-06 21:12:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17268 states, 17063 states have (on average 1.2722264549024205) internal successors, (21708), 17159 states have internal predecessors, (21708), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17268 states to 17268 states and 21882 transitions. [2021-11-06 21:12:40,371 INFO L78 Accepts]: Start accepts. Automaton has 17268 states and 21882 transitions. Word has length 22 [2021-11-06 21:12:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:40,373 INFO L470 AbstractCegarLoop]: Abstraction has 17268 states and 21882 transitions. [2021-11-06 21:12:40,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 21:12:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 17268 states and 21882 transitions. [2021-11-06 21:12:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 21:12:40,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:40,380 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] [2021-11-06 21:12:40,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 21:12:40,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:40,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:40,383 INFO L85 PathProgramCache]: Analyzing trace with hash -843711802, now seen corresponding path program 1 times [2021-11-06 21:12:40,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:40,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906590695] [2021-11-06 21:12:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:40,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:40,658 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 21:12:40,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:40,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906590695] [2021-11-06 21:12:40,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906590695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:40,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:40,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:40,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867122061] [2021-11-06 21:12:40,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:40,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:40,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:40,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:40,661 INFO L87 Difference]: Start difference. First operand 17268 states and 21882 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:12:41,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:41,250 INFO L93 Difference]: Finished difference Result 17268 states and 21882 transitions. [2021-11-06 21:12:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:41,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-06 21:12:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:41,326 INFO L225 Difference]: With dead ends: 17268 [2021-11-06 21:12:41,327 INFO L226 Difference]: Without dead ends: 17264 [2021-11-06 21:12:41,340 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 21:12:41,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17264 states. [2021-11-06 21:12:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17264 to 17264. [2021-11-06 21:12:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17264 states, 17061 states have (on average 1.2721411406130942) internal successors, (21704), 17155 states have internal predecessors, (21704), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17264 states to 17264 states and 21878 transitions. [2021-11-06 21:12:41,918 INFO L78 Accepts]: Start accepts. Automaton has 17264 states and 21878 transitions. Word has length 24 [2021-11-06 21:12:41,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:41,918 INFO L470 AbstractCegarLoop]: Abstraction has 17264 states and 21878 transitions. [2021-11-06 21:12:41,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:12:41,919 INFO L276 IsEmpty]: Start isEmpty. Operand 17264 states and 21878 transitions. [2021-11-06 21:12:41,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-06 21:12:41,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:41,920 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] [2021-11-06 21:12:41,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 21:12:41,921 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:41,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:41,921 INFO L85 PathProgramCache]: Analyzing trace with hash 943632681, now seen corresponding path program 1 times [2021-11-06 21:12:41,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:41,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462373281] [2021-11-06 21:12:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:41,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:42,122 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 21:12:42,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:42,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462373281] [2021-11-06 21:12:42,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462373281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:42,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:42,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:42,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716029616] [2021-11-06 21:12:42,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:42,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:42,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:42,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:42,125 INFO L87 Difference]: Start difference. First operand 17264 states and 21878 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 21:12:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:42,645 INFO L93 Difference]: Finished difference Result 17264 states and 21878 transitions. [2021-11-06 21:12:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:42,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-11-06 21:12:42,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:42,702 INFO L225 Difference]: With dead ends: 17264 [2021-11-06 21:12:42,703 INFO L226 Difference]: Without dead ends: 17260 [2021-11-06 21:12:42,722 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 21:12:42,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17260 states. [2021-11-06 21:12:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17260 to 17260. [2021-11-06 21:12:43,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17260 states, 17059 states have (on average 1.2720558063192449) internal successors, (21700), 17151 states have internal predecessors, (21700), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17260 states to 17260 states and 21874 transitions. [2021-11-06 21:12:43,550 INFO L78 Accepts]: Start accepts. Automaton has 17260 states and 21874 transitions. Word has length 26 [2021-11-06 21:12:43,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:43,550 INFO L470 AbstractCegarLoop]: Abstraction has 17260 states and 21874 transitions. [2021-11-06 21:12:43,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 21:12:43,550 INFO L276 IsEmpty]: Start isEmpty. Operand 17260 states and 21874 transitions. [2021-11-06 21:12:43,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-06 21:12:43,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:43,551 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] [2021-11-06 21:12:43,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 21:12:43,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:43,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:43,553 INFO L85 PathProgramCache]: Analyzing trace with hash 594762764, now seen corresponding path program 1 times [2021-11-06 21:12:43,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:43,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486682844] [2021-11-06 21:12:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:43,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:43,803 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 21:12:43,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:43,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486682844] [2021-11-06 21:12:43,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486682844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:43,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:43,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:43,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544379794] [2021-11-06 21:12:43,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:43,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:43,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:43,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:43,806 INFO L87 Difference]: Start difference. First operand 17260 states and 21874 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 21:12:44,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:44,397 INFO L93 Difference]: Finished difference Result 17260 states and 21874 transitions. [2021-11-06 21:12:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:44,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-11-06 21:12:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:44,452 INFO L225 Difference]: With dead ends: 17260 [2021-11-06 21:12:44,453 INFO L226 Difference]: Without dead ends: 17256 [2021-11-06 21:12:44,467 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 21:12:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17256 states. [2021-11-06 21:12:44,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17256 to 17256. [2021-11-06 21:12:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17256 states, 17057 states have (on average 1.271970452013836) internal successors, (21696), 17147 states have internal predecessors, (21696), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17256 states to 17256 states and 21870 transitions. [2021-11-06 21:12:45,029 INFO L78 Accepts]: Start accepts. Automaton has 17256 states and 21870 transitions. Word has length 28 [2021-11-06 21:12:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:45,029 INFO L470 AbstractCegarLoop]: Abstraction has 17256 states and 21870 transitions. [2021-11-06 21:12:45,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 21:12:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 17256 states and 21870 transitions. [2021-11-06 21:12:45,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-06 21:12:45,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:45,031 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] [2021-11-06 21:12:45,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 21:12:45,031 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:45,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash 338221935, now seen corresponding path program 1 times [2021-11-06 21:12:45,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:45,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846758460] [2021-11-06 21:12:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:45,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:45,235 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 21:12:45,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:45,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846758460] [2021-11-06 21:12:45,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846758460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:45,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:45,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:45,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107647923] [2021-11-06 21:12:45,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:45,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:45,238 INFO L87 Difference]: Start difference. First operand 17256 states and 21870 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:12:45,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:45,806 INFO L93 Difference]: Finished difference Result 17256 states and 21870 transitions. [2021-11-06 21:12:45,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:45,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-06 21:12:45,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:45,862 INFO L225 Difference]: With dead ends: 17256 [2021-11-06 21:12:45,862 INFO L226 Difference]: Without dead ends: 17252 [2021-11-06 21:12:45,877 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 21:12:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17252 states. [2021-11-06 21:12:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17252 to 17252. [2021-11-06 21:12:46,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17252 states, 17055 states have (on average 1.271885077689827) internal successors, (21692), 17143 states have internal predecessors, (21692), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17252 states to 17252 states and 21866 transitions. [2021-11-06 21:12:46,444 INFO L78 Accepts]: Start accepts. Automaton has 17252 states and 21866 transitions. Word has length 30 [2021-11-06 21:12:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:46,444 INFO L470 AbstractCegarLoop]: Abstraction has 17252 states and 21866 transitions. [2021-11-06 21:12:46,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:12:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 17252 states and 21866 transitions. [2021-11-06 21:12:46,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-06 21:12:46,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:46,449 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] [2021-11-06 21:12:46,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 21:12:46,449 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:46,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:46,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1384378542, now seen corresponding path program 1 times [2021-11-06 21:12:46,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:46,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489982282] [2021-11-06 21:12:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:46,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:46,669 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 21:12:46,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:46,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489982282] [2021-11-06 21:12:46,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489982282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:46,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:46,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:46,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560750712] [2021-11-06 21:12:46,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:46,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:46,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:46,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:46,673 INFO L87 Difference]: Start difference. First operand 17252 states and 21866 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 21:12:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:47,451 INFO L93 Difference]: Finished difference Result 17252 states and 21866 transitions. [2021-11-06 21:12:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:47,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-06 21:12:47,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:47,501 INFO L225 Difference]: With dead ends: 17252 [2021-11-06 21:12:47,501 INFO L226 Difference]: Without dead ends: 17248 [2021-11-06 21:12:47,511 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 21:12:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17248 states. [2021-11-06 21:12:47,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17248 to 17248. [2021-11-06 21:12:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17248 states, 17053 states have (on average 1.2717996833401748) internal successors, (21688), 17139 states have internal predecessors, (21688), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17248 states to 17248 states and 21862 transitions. [2021-11-06 21:12:48,080 INFO L78 Accepts]: Start accepts. Automaton has 17248 states and 21862 transitions. Word has length 32 [2021-11-06 21:12:48,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:48,080 INFO L470 AbstractCegarLoop]: Abstraction has 17248 states and 21862 transitions. [2021-11-06 21:12:48,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 21:12:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 17248 states and 21862 transitions. [2021-11-06 21:12:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 21:12:48,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:48,084 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] [2021-11-06 21:12:48,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 21:12:48,085 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1053939637, now seen corresponding path program 1 times [2021-11-06 21:12:48,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:48,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526045572] [2021-11-06 21:12:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:48,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:48,309 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 21:12:48,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:48,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526045572] [2021-11-06 21:12:48,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526045572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:48,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:48,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:48,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729264670] [2021-11-06 21:12:48,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:48,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:48,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:48,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:48,312 INFO L87 Difference]: Start difference. First operand 17248 states and 21862 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 21:12:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:49,044 INFO L93 Difference]: Finished difference Result 17248 states and 21862 transitions. [2021-11-06 21:12:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:49,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2021-11-06 21:12:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:49,097 INFO L225 Difference]: With dead ends: 17248 [2021-11-06 21:12:49,098 INFO L226 Difference]: Without dead ends: 17244 [2021-11-06 21:12:49,112 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 21:12:49,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17244 states. [2021-11-06 21:12:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17244 to 17244. [2021-11-06 21:12:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17244 states, 17051 states have (on average 1.2717142689578325) internal successors, (21684), 17135 states have internal predecessors, (21684), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17244 states to 17244 states and 21858 transitions. [2021-11-06 21:12:49,727 INFO L78 Accepts]: Start accepts. Automaton has 17244 states and 21858 transitions. Word has length 34 [2021-11-06 21:12:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:49,727 INFO L470 AbstractCegarLoop]: Abstraction has 17244 states and 21858 transitions. [2021-11-06 21:12:49,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 21:12:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 17244 states and 21858 transitions. [2021-11-06 21:12:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 21:12:49,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:49,732 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] [2021-11-06 21:12:49,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 21:12:49,732 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash -774433640, now seen corresponding path program 1 times [2021-11-06 21:12:49,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:49,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117458223] [2021-11-06 21:12:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:49,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:49,959 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 21:12:49,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:49,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117458223] [2021-11-06 21:12:49,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117458223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:49,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:49,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:49,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815662463] [2021-11-06 21:12:49,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:49,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:49,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:49,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:49,962 INFO L87 Difference]: Start difference. First operand 17244 states and 21858 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:12:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:51,167 INFO L93 Difference]: Finished difference Result 17332 states and 21964 transitions. [2021-11-06 21:12:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:51,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-06 21:12:51,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:51,220 INFO L225 Difference]: With dead ends: 17332 [2021-11-06 21:12:51,221 INFO L226 Difference]: Without dead ends: 17328 [2021-11-06 21:12:51,237 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 21:12:51,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17328 states. [2021-11-06 21:12:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17328 to 17240. [2021-11-06 21:12:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17240 states, 17049 states have (on average 1.2716288345357498) internal successors, (21680), 17131 states have internal predecessors, (21680), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17240 states to 17240 states and 21854 transitions. [2021-11-06 21:12:51,819 INFO L78 Accepts]: Start accepts. Automaton has 17240 states and 21854 transitions. Word has length 36 [2021-11-06 21:12:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:51,819 INFO L470 AbstractCegarLoop]: Abstraction has 17240 states and 21854 transitions. [2021-11-06 21:12:51,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:12:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 17240 states and 21854 transitions. [2021-11-06 21:12:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-06 21:12:51,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:51,820 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] [2021-11-06 21:12:51,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 21:12:51,821 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:51,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1199528453, now seen corresponding path program 1 times [2021-11-06 21:12:51,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:51,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998939539] [2021-11-06 21:12:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:51,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:52,016 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 21:12:52,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:52,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998939539] [2021-11-06 21:12:52,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998939539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:52,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:52,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:52,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83015331] [2021-11-06 21:12:52,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:52,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:52,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:52,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:52,020 INFO L87 Difference]: Start difference. First operand 17240 states and 21854 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 21:12:52,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:52,671 INFO L93 Difference]: Finished difference Result 17240 states and 21854 transitions. [2021-11-06 21:12:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:52,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-11-06 21:12:52,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:52,726 INFO L225 Difference]: With dead ends: 17240 [2021-11-06 21:12:52,726 INFO L226 Difference]: Without dead ends: 17236 [2021-11-06 21:12:52,741 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 21:12:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17236 states. [2021-11-06 21:12:53,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17236 to 17236. [2021-11-06 21:12:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17236 states, 17047 states have (on average 1.2715433800668738) internal successors, (21676), 17127 states have internal predecessors, (21676), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17236 states to 17236 states and 21850 transitions. [2021-11-06 21:12:53,328 INFO L78 Accepts]: Start accepts. Automaton has 17236 states and 21850 transitions. Word has length 38 [2021-11-06 21:12:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:53,328 INFO L470 AbstractCegarLoop]: Abstraction has 17236 states and 21850 transitions. [2021-11-06 21:12:53,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 21:12:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 17236 states and 21850 transitions. [2021-11-06 21:12:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 21:12:53,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:53,330 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] [2021-11-06 21:12:53,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 21:12:53,330 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:53,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:53,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1693750306, now seen corresponding path program 1 times [2021-11-06 21:12:53,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:53,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821291699] [2021-11-06 21:12:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:53,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:53,507 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 21:12:53,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:53,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821291699] [2021-11-06 21:12:53,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821291699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:53,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:53,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:53,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34911212] [2021-11-06 21:12:53,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:53,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:53,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:53,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:53,509 INFO L87 Difference]: Start difference. First operand 17236 states and 21850 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 21:12:54,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:54,192 INFO L93 Difference]: Finished difference Result 17236 states and 21850 transitions. [2021-11-06 21:12:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:54,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-06 21:12:54,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:54,237 INFO L225 Difference]: With dead ends: 17236 [2021-11-06 21:12:54,237 INFO L226 Difference]: Without dead ends: 17232 [2021-11-06 21:12:54,251 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 21:12:54,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17232 states. [2021-11-06 21:12:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17232 to 17232. [2021-11-06 21:12:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17232 states, 17045 states have (on average 1.271457905544148) internal successors, (21672), 17123 states have internal predecessors, (21672), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17232 states to 17232 states and 21846 transitions. [2021-11-06 21:12:54,917 INFO L78 Accepts]: Start accepts. Automaton has 17232 states and 21846 transitions. Word has length 40 [2021-11-06 21:12:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:54,918 INFO L470 AbstractCegarLoop]: Abstraction has 17232 states and 21846 transitions. [2021-11-06 21:12:54,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 21:12:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 17232 states and 21846 transitions. [2021-11-06 21:12:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 21:12:54,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:54,918 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] [2021-11-06 21:12:54,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 21:12:54,919 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:54,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:54,919 INFO L85 PathProgramCache]: Analyzing trace with hash 100419137, now seen corresponding path program 1 times [2021-11-06 21:12:54,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:54,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935379106] [2021-11-06 21:12:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:54,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:55,101 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 21:12:55,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:55,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935379106] [2021-11-06 21:12:55,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935379106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:55,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:55,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:55,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488386152] [2021-11-06 21:12:55,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:55,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:55,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:55,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:55,104 INFO L87 Difference]: Start difference. First operand 17232 states and 21846 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 21:12:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:55,661 INFO L93 Difference]: Finished difference Result 17232 states and 21846 transitions. [2021-11-06 21:12:55,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:55,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-06 21:12:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:55,695 INFO L225 Difference]: With dead ends: 17232 [2021-11-06 21:12:55,695 INFO L226 Difference]: Without dead ends: 17228 [2021-11-06 21:12:55,705 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 21:12:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17228 states. [2021-11-06 21:12:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17228 to 17228. [2021-11-06 21:12:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17228 states, 17043 states have (on average 1.2713724109605116) internal successors, (21668), 17119 states have internal predecessors, (21668), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17228 states to 17228 states and 21842 transitions. [2021-11-06 21:12:56,431 INFO L78 Accepts]: Start accepts. Automaton has 17228 states and 21842 transitions. Word has length 42 [2021-11-06 21:12:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:56,432 INFO L470 AbstractCegarLoop]: Abstraction has 17228 states and 21842 transitions. [2021-11-06 21:12:56,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 21:12:56,432 INFO L276 IsEmpty]: Start isEmpty. Operand 17228 states and 21842 transitions. [2021-11-06 21:12:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 21:12:56,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:56,432 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] [2021-11-06 21:12:56,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 21:12:56,433 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2015368484, now seen corresponding path program 1 times [2021-11-06 21:12:56,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:56,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757129217] [2021-11-06 21:12:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:56,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:56,620 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 21:12:56,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:56,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757129217] [2021-11-06 21:12:56,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757129217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:56,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:56,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:56,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487933924] [2021-11-06 21:12:56,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:56,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:56,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:56,624 INFO L87 Difference]: Start difference. First operand 17228 states and 21842 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 21:12:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:57,327 INFO L93 Difference]: Finished difference Result 17228 states and 21842 transitions. [2021-11-06 21:12:57,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:57,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-06 21:12:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:57,358 INFO L225 Difference]: With dead ends: 17228 [2021-11-06 21:12:57,359 INFO L226 Difference]: Without dead ends: 17224 [2021-11-06 21:12:57,369 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 21:12:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17224 states. [2021-11-06 21:12:58,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17224 to 17224. [2021-11-06 21:12:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17224 states, 17041 states have (on average 1.2712868963089021) internal successors, (21664), 17115 states have internal predecessors, (21664), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17224 states to 17224 states and 21838 transitions. [2021-11-06 21:12:58,161 INFO L78 Accepts]: Start accepts. Automaton has 17224 states and 21838 transitions. Word has length 44 [2021-11-06 21:12:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:58,161 INFO L470 AbstractCegarLoop]: Abstraction has 17224 states and 21838 transitions. [2021-11-06 21:12:58,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 21:12:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 17224 states and 21838 transitions. [2021-11-06 21:12:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 21:12:58,162 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:58,162 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 21:12:58,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 21:12:58,163 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:58,163 INFO L85 PathProgramCache]: Analyzing trace with hash -259278713, now seen corresponding path program 1 times [2021-11-06 21:12:58,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:58,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217861555] [2021-11-06 21:12:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:58,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:12:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:12:58,342 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 21:12:58,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:12:58,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217861555] [2021-11-06 21:12:58,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217861555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:12:58,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:12:58,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:12:58,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375524681] [2021-11-06 21:12:58,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:12:58,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:12:58,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:12:58,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:12:58,344 INFO L87 Difference]: Start difference. First operand 17224 states and 21838 transitions. Second operand has 4 states, 4 states have (on average 11.5) 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 21:12:58,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:12:58,994 INFO L93 Difference]: Finished difference Result 17224 states and 21838 transitions. [2021-11-06 21:12:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:12:58,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) 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 21:12:58,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:12:59,027 INFO L225 Difference]: With dead ends: 17224 [2021-11-06 21:12:59,027 INFO L226 Difference]: Without dead ends: 17149 [2021-11-06 21:12:59,038 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 21:12:59,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17149 states. [2021-11-06 21:12:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17149 to 17149. [2021-11-06 21:12:59,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17149 states, 16968 states have (on average 1.2722772277227723) internal successors, (21588), 17040 states have internal predecessors, (21588), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:12:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17149 states to 17149 states and 21762 transitions. [2021-11-06 21:12:59,960 INFO L78 Accepts]: Start accepts. Automaton has 17149 states and 21762 transitions. Word has length 46 [2021-11-06 21:12:59,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:12:59,960 INFO L470 AbstractCegarLoop]: Abstraction has 17149 states and 21762 transitions. [2021-11-06 21:12:59,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) 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 21:12:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 17149 states and 21762 transitions. [2021-11-06 21:12:59,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 21:12:59,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:12:59,969 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, 1, 1, 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 21:12:59,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 21:12:59,970 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting dc21140m_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:12:59,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:12:59,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2107102333, now seen corresponding path program 1 times [2021-11-06 21:12:59,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:12:59,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899749216] [2021-11-06 21:12:59,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:12:59,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:00,209 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 21:13:00,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:00,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899749216] [2021-11-06 21:13:00,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899749216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:00,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:00,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 21:13:00,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177693135] [2021-11-06 21:13:00,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:13:00,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:13:00,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:13:00,211 INFO L87 Difference]: Start difference. First operand 17149 states and 21762 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:00,925 INFO L93 Difference]: Finished difference Result 34269 states and 43493 transitions. [2021-11-06 21:13:00,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:13:00,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-06 21:13:00,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:00,979 INFO L225 Difference]: With dead ends: 34269 [2021-11-06 21:13:00,979 INFO L226 Difference]: Without dead ends: 17148 [2021-11-06 21:13:01,084 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 21:13:01,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17148 states. [2021-11-06 21:13:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17148 to 17148. [2021-11-06 21:13:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17148 states, 16967 states have (on average 1.2721753993045324) internal successors, (21585), 17039 states have internal predecessors, (21585), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17148 states to 17148 states and 21759 transitions. [2021-11-06 21:13:01,896 INFO L78 Accepts]: Start accepts. Automaton has 17148 states and 21759 transitions. Word has length 80 [2021-11-06 21:13:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:01,896 INFO L470 AbstractCegarLoop]: Abstraction has 17148 states and 21759 transitions. [2021-11-06 21:13:01,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:01,897 INFO L276 IsEmpty]: Start isEmpty. Operand 17148 states and 21759 transitions. [2021-11-06 21:13:01,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 21:13:01,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:01,905 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, 1, 1, 1, 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 21:13:01,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 21:13:01,905 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting dc21140m_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:01,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:01,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1646149556, now seen corresponding path program 1 times [2021-11-06 21:13:01,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:01,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433235784] [2021-11-06 21:13:01,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:01,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:02,103 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 21:13:02,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:02,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433235784] [2021-11-06 21:13:02,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433235784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:02,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:02,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:13:02,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718089838] [2021-11-06 21:13:02,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:13:02,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:02,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:13:02,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:13:02,106 INFO L87 Difference]: Start difference. First operand 17148 states and 21759 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:02,950 INFO L93 Difference]: Finished difference Result 34269 states and 43578 transitions. [2021-11-06 21:13:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:13:02,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 21:13:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:03,003 INFO L225 Difference]: With dead ends: 34269 [2021-11-06 21:13:03,004 INFO L226 Difference]: Without dead ends: 17149 [2021-11-06 21:13:03,075 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 21:13:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17149 states. [2021-11-06 21:13:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17149 to 17149. [2021-11-06 21:13:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17149 states, 16968 states have (on average 1.2721593587930222) internal successors, (21586), 17040 states have internal predecessors, (21586), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17149 states to 17149 states and 21760 transitions. [2021-11-06 21:13:03,945 INFO L78 Accepts]: Start accepts. Automaton has 17149 states and 21760 transitions. Word has length 81 [2021-11-06 21:13:03,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:03,945 INFO L470 AbstractCegarLoop]: Abstraction has 17149 states and 21760 transitions. [2021-11-06 21:13:03,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 17149 states and 21760 transitions. [2021-11-06 21:13:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 21:13:03,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:03,953 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, 1, 1, 1, 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 21:13:03,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 21:13:03,953 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting dc21140m_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:03,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1387984118, now seen corresponding path program 1 times [2021-11-06 21:13:03,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:03,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866879192] [2021-11-06 21:13:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:03,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:04,188 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 21:13:04,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:04,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866879192] [2021-11-06 21:13:04,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866879192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:04,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:04,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:13:04,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084779500] [2021-11-06 21:13:04,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:13:04,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:04,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:13:04,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:13:04,192 INFO L87 Difference]: Start difference. First operand 17149 states and 21760 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:05,531 INFO L93 Difference]: Finished difference Result 17240 states and 21876 transitions. [2021-11-06 21:13:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:13:05,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 21:13:05,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:05,578 INFO L225 Difference]: With dead ends: 17240 [2021-11-06 21:13:05,579 INFO L226 Difference]: Without dead ends: 17236 [2021-11-06 21:13:05,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 21:13:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17236 states. [2021-11-06 21:13:06,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17236 to 17145. [2021-11-06 21:13:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17145 states, 16966 states have (on average 1.2720735588824708) internal successors, (21582), 17036 states have internal predecessors, (21582), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17145 states to 17145 states and 21756 transitions. [2021-11-06 21:13:06,376 INFO L78 Accepts]: Start accepts. Automaton has 17145 states and 21756 transitions. Word has length 81 [2021-11-06 21:13:06,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:06,376 INFO L470 AbstractCegarLoop]: Abstraction has 17145 states and 21756 transitions. [2021-11-06 21:13:06,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:06,376 INFO L276 IsEmpty]: Start isEmpty. Operand 17145 states and 21756 transitions. [2021-11-06 21:13:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 21:13:06,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:06,385 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, 1, 1, 1, 1, 1, 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 21:13:06,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 21:13:06,385 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting dc21041_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:06,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:06,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1070903105, now seen corresponding path program 1 times [2021-11-06 21:13:06,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:06,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42561953] [2021-11-06 21:13:06,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:06,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:06,607 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 21:13:06,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:06,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42561953] [2021-11-06 21:13:06,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42561953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:06,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:06,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:13:06,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796996969] [2021-11-06 21:13:06,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:13:06,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:06,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:13:06,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:13:06,609 INFO L87 Difference]: Start difference. First operand 17145 states and 21756 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:07,730 INFO L93 Difference]: Finished difference Result 17236 states and 21872 transitions. [2021-11-06 21:13:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:13:07,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 21:13:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:07,773 INFO L225 Difference]: With dead ends: 17236 [2021-11-06 21:13:07,774 INFO L226 Difference]: Without dead ends: 17228 [2021-11-06 21:13:07,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 21:13:07,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17228 states. [2021-11-06 21:13:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17228 to 17137. [2021-11-06 21:13:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17137 states, 16962 states have (on average 1.2719018983610424) internal successors, (21574), 17028 states have internal predecessors, (21574), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17137 states to 17137 states and 21748 transitions. [2021-11-06 21:13:08,646 INFO L78 Accepts]: Start accepts. Automaton has 17137 states and 21748 transitions. Word has length 83 [2021-11-06 21:13:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:08,646 INFO L470 AbstractCegarLoop]: Abstraction has 17137 states and 21748 transitions. [2021-11-06 21:13:08,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 17137 states and 21748 transitions. [2021-11-06 21:13:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 21:13:08,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:08,655 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, 1, 1, 1, 1, 1, 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 21:13:08,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 21:13:08,655 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting dc21040_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash 377890021, now seen corresponding path program 1 times [2021-11-06 21:13:08,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:08,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519799129] [2021-11-06 21:13:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:08,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:08,866 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 21:13:08,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:08,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519799129] [2021-11-06 21:13:08,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519799129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:08,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:08,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:13:08,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074559284] [2021-11-06 21:13:08,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:13:08,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:08,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:13:08,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:13:08,869 INFO L87 Difference]: Start difference. First operand 17137 states and 21748 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:10,041 INFO L93 Difference]: Finished difference Result 17234 states and 21865 transitions. [2021-11-06 21:13:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:13:10,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 21:13:10,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:10,071 INFO L225 Difference]: With dead ends: 17234 [2021-11-06 21:13:10,072 INFO L226 Difference]: Without dead ends: 17228 [2021-11-06 21:13:10,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 21:13:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17228 states. [2021-11-06 21:13:10,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17228 to 17131. [2021-11-06 21:13:10,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17131 states, 16959 states have (on average 1.2717730998289993) internal successors, (21568), 17022 states have internal predecessors, (21568), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17131 states to 17131 states and 21742 transitions. [2021-11-06 21:13:10,753 INFO L78 Accepts]: Start accepts. Automaton has 17131 states and 21742 transitions. Word has length 83 [2021-11-06 21:13:10,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:10,753 INFO L470 AbstractCegarLoop]: Abstraction has 17131 states and 21742 transitions. [2021-11-06 21:13:10,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 17131 states and 21742 transitions. [2021-11-06 21:13:10,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 21:13:10,764 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:10,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:10,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 21:13:10,764 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:10,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash 626921568, now seen corresponding path program 1 times [2021-11-06 21:13:10,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:10,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766796050] [2021-11-06 21:13:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:10,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:10,997 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 21:13:10,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:10,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766796050] [2021-11-06 21:13:10,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766796050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:10,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:10,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:13:10,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236868019] [2021-11-06 21:13:11,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:13:11,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:11,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:13:11,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:13:11,001 INFO L87 Difference]: Start difference. First operand 17131 states and 21742 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:12,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:12,080 INFO L93 Difference]: Finished difference Result 17222 states and 21862 transitions. [2021-11-06 21:13:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:13:12,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-06 21:13:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:12,112 INFO L225 Difference]: With dead ends: 17222 [2021-11-06 21:13:12,113 INFO L226 Difference]: Without dead ends: 17214 [2021-11-06 21:13:12,121 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 21:13:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17214 states. [2021-11-06 21:13:12,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17214 to 17123. [2021-11-06 21:13:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17123 states, 16955 states have (on average 1.2716012975523445) internal successors, (21560), 17014 states have internal predecessors, (21560), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17123 states to 17123 states and 21734 transitions. [2021-11-06 21:13:12,732 INFO L78 Accepts]: Start accepts. Automaton has 17123 states and 21734 transitions. Word has length 89 [2021-11-06 21:13:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:12,732 INFO L470 AbstractCegarLoop]: Abstraction has 17123 states and 21734 transitions. [2021-11-06 21:13:12,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 17123 states and 21734 transitions. [2021-11-06 21:13:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 21:13:12,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:12,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:12,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 21:13:12,748 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting dc21140m_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash -864236835, now seen corresponding path program 1 times [2021-11-06 21:13:12,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:12,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457221404] [2021-11-06 21:13:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:12,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:12,941 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 21:13:12,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:12,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457221404] [2021-11-06 21:13:12,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457221404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:12,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:12,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 21:13:12,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485446216] [2021-11-06 21:13:12,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:13:12,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:12,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:13:12,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:13:12,943 INFO L87 Difference]: Start difference. First operand 17123 states and 21734 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:16,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:16,091 INFO L93 Difference]: Finished difference Result 17214 states and 21850 transitions. [2021-11-06 21:13:16,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:13:16,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 21:13:16,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:16,144 INFO L225 Difference]: With dead ends: 17214 [2021-11-06 21:13:16,145 INFO L226 Difference]: Without dead ends: 17210 [2021-11-06 21:13:16,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:13:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17210 states. [2021-11-06 21:13:16,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17210 to 17119. [2021-11-06 21:13:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17119 states, 16953 states have (on average 1.2715153660119154) internal successors, (21556), 17010 states have internal predecessors, (21556), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17119 states to 17119 states and 21730 transitions. [2021-11-06 21:13:16,779 INFO L78 Accepts]: Start accepts. Automaton has 17119 states and 21730 transitions. Word has length 94 [2021-11-06 21:13:16,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:16,780 INFO L470 AbstractCegarLoop]: Abstraction has 17119 states and 21730 transitions. [2021-11-06 21:13:16,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 17119 states and 21730 transitions. [2021-11-06 21:13:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 21:13:16,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:16,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:16,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 21:13:16,798 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting dc21041_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:16,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash -311479010, now seen corresponding path program 1 times [2021-11-06 21:13:16,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:16,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778377802] [2021-11-06 21:13:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:16,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:16,982 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 21:13:16,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:16,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778377802] [2021-11-06 21:13:16,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778377802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:16,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:16,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 21:13:16,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205498101] [2021-11-06 21:13:16,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:13:16,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:16,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:13:16,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:13:16,985 INFO L87 Difference]: Start difference. First operand 17119 states and 21730 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:20,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:20,243 INFO L93 Difference]: Finished difference Result 17210 states and 21846 transitions. [2021-11-06 21:13:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:13:20,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-06 21:13:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:20,293 INFO L225 Difference]: With dead ends: 17210 [2021-11-06 21:13:20,293 INFO L226 Difference]: Without dead ends: 17202 [2021-11-06 21:13:20,307 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:13:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17202 states. [2021-11-06 21:13:20,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17202 to 17111. [2021-11-06 21:13:20,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17111 states, 16949 states have (on average 1.2713434420909788) internal successors, (21548), 17002 states have internal predecessors, (21548), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17111 states to 17111 states and 21722 transitions. [2021-11-06 21:13:20,958 INFO L78 Accepts]: Start accepts. Automaton has 17111 states and 21722 transitions. Word has length 96 [2021-11-06 21:13:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:20,958 INFO L470 AbstractCegarLoop]: Abstraction has 17111 states and 21722 transitions. [2021-11-06 21:13:20,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 17111 states and 21722 transitions. [2021-11-06 21:13:20,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 21:13:20,975 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:20,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:20,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 21:13:20,975 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting dc21040_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:20,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash 9873816, now seen corresponding path program 1 times [2021-11-06 21:13:20,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:20,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476446977] [2021-11-06 21:13:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:20,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:21,162 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 21:13:21,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:21,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476446977] [2021-11-06 21:13:21,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476446977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:21,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:21,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 21:13:21,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454441415] [2021-11-06 21:13:21,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:13:21,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:13:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:13:21,164 INFO L87 Difference]: Start difference. First operand 17111 states and 21722 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:24,213 INFO L93 Difference]: Finished difference Result 17208 states and 21839 transitions. [2021-11-06 21:13:24,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:13:24,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-06 21:13:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:24,257 INFO L225 Difference]: With dead ends: 17208 [2021-11-06 21:13:24,257 INFO L226 Difference]: Without dead ends: 17202 [2021-11-06 21:13:24,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:13:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17202 states. [2021-11-06 21:13:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17202 to 17105. [2021-11-06 21:13:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17105 states, 16946 states have (on average 1.271214445886935) internal successors, (21542), 16996 states have internal predecessors, (21542), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17105 states to 17105 states and 21716 transitions. [2021-11-06 21:13:24,976 INFO L78 Accepts]: Start accepts. Automaton has 17105 states and 21716 transitions. Word has length 96 [2021-11-06 21:13:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:24,976 INFO L470 AbstractCegarLoop]: Abstraction has 17105 states and 21716 transitions. [2021-11-06 21:13:24,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 17105 states and 21716 transitions. [2021-11-06 21:13:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-06 21:13:24,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:24,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:24,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 21:13:24,994 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:24,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1755619114, now seen corresponding path program 1 times [2021-11-06 21:13:24,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:24,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137478547] [2021-11-06 21:13:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:24,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:25,187 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 21:13:25,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:25,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137478547] [2021-11-06 21:13:25,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137478547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:25,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:25,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 21:13:25,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125895147] [2021-11-06 21:13:25,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:13:25,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:25,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:13:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:13:25,191 INFO L87 Difference]: Start difference. First operand 17105 states and 21716 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:28,247 INFO L93 Difference]: Finished difference Result 17196 states and 21836 transitions. [2021-11-06 21:13:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:13:28,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-06 21:13:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:28,299 INFO L225 Difference]: With dead ends: 17196 [2021-11-06 21:13:28,299 INFO L226 Difference]: Without dead ends: 17188 [2021-11-06 21:13:28,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:13:28,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17188 states. [2021-11-06 21:13:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17188 to 17097. [2021-11-06 21:13:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17097 states, 16942 states have (on average 1.2710423798843111) internal successors, (21534), 16988 states have internal predecessors, (21534), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17097 states to 17097 states and 21708 transitions. [2021-11-06 21:13:29,037 INFO L78 Accepts]: Start accepts. Automaton has 17097 states and 21708 transitions. Word has length 102 [2021-11-06 21:13:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:29,037 INFO L470 AbstractCegarLoop]: Abstraction has 17097 states and 21708 transitions. [2021-11-06 21:13:29,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:13:29,038 INFO L276 IsEmpty]: Start isEmpty. Operand 17097 states and 21708 transitions. [2021-11-06 21:13:29,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-06 21:13:29,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:29,129 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:29,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 21:13:29,129 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:29,129 INFO L85 PathProgramCache]: Analyzing trace with hash -136523204, now seen corresponding path program 1 times [2021-11-06 21:13:29,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:29,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464611568] [2021-11-06 21:13:29,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:29,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:29,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:29,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464611568] [2021-11-06 21:13:29,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-06 21:13:29,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111760769] [2021-11-06 21:13:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:29,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:13:29,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:13:29,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:13:29,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 21:13:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:31,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 4200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 21:13:31,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:13:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:13:31,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111760769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:31,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:31,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:13:31,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620382025] [2021-11-06 21:13:31,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:13:31,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:31,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:13:31,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:13:31,872 INFO L87 Difference]: Start difference. First operand 17097 states and 21708 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:13:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:32,535 INFO L93 Difference]: Finished difference Result 34178 states and 43484 transitions. [2021-11-06 21:13:32,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:13:32,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 212 [2021-11-06 21:13:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:32,598 INFO L225 Difference]: With dead ends: 34178 [2021-11-06 21:13:32,598 INFO L226 Difference]: Without dead ends: 17109 [2021-11-06 21:13:32,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 210 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 21:13:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17109 states. [2021-11-06 21:13:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17109 to 17100. [2021-11-06 21:13:33,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17100 states, 16945 states have (on average 1.2709943936264385) internal successors, (21537), 16991 states have internal predecessors, (21537), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:33,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17100 states to 17100 states and 21711 transitions. [2021-11-06 21:13:33,437 INFO L78 Accepts]: Start accepts. Automaton has 17100 states and 21711 transitions. Word has length 212 [2021-11-06 21:13:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:33,438 INFO L470 AbstractCegarLoop]: Abstraction has 17100 states and 21711 transitions. [2021-11-06 21:13:33,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:13:33,438 INFO L276 IsEmpty]: Start isEmpty. Operand 17100 states and 21711 transitions. [2021-11-06 21:13:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-06 21:13:33,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:33,510 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:33,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 21:13:33,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-06 21:13:33,711 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:33,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:33,711 INFO L85 PathProgramCache]: Analyzing trace with hash 368725557, now seen corresponding path program 1 times [2021-11-06 21:13:33,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:33,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387372702] [2021-11-06 21:13:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:33,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:33,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:33,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387372702] [2021-11-06 21:13:33,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-06 21:13:33,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867530572] [2021-11-06 21:13:33,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:33,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:13:33,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:13:33,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:13:33,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 21:13:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:35,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 4211 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 21:13:35,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:13:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 21:13:36,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867530572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:36,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:36,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:13:36,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551054709] [2021-11-06 21:13:36,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:13:36,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:13:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:13:36,437 INFO L87 Difference]: Start difference. First operand 17100 states and 21711 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:13:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:37,108 INFO L93 Difference]: Finished difference Result 34182 states and 43486 transitions. [2021-11-06 21:13:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:13:37,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 216 [2021-11-06 21:13:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:37,189 INFO L225 Difference]: With dead ends: 34182 [2021-11-06 21:13:37,189 INFO L226 Difference]: Without dead ends: 17110 [2021-11-06 21:13:37,434 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 214 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 21:13:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17110 states. [2021-11-06 21:13:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17110 to 17104. [2021-11-06 21:13:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17104 states, 16949 states have (on average 1.27098943890495) internal successors, (21542), 16995 states have internal predecessors, (21542), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17104 states to 17104 states and 21716 transitions. [2021-11-06 21:13:38,008 INFO L78 Accepts]: Start accepts. Automaton has 17104 states and 21716 transitions. Word has length 216 [2021-11-06 21:13:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:38,009 INFO L470 AbstractCegarLoop]: Abstraction has 17104 states and 21716 transitions. [2021-11-06 21:13:38,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:13:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 17104 states and 21716 transitions. [2021-11-06 21:13:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-06 21:13:38,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:38,093 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:38,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 21:13:38,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-06 21:13:38,308 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:38,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1470400710, now seen corresponding path program 1 times [2021-11-06 21:13:38,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:38,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497169108] [2021-11-06 21:13:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:38,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:38,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:38,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497169108] [2021-11-06 21:13:38,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-06 21:13:38,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27547126] [2021-11-06 21:13:38,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:38,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:13:38,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:13:38,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:13:38,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 21:13:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:40,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 4224 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 21:13:40,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:13:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 21:13:41,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27547126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:41,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:41,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:13:41,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187258097] [2021-11-06 21:13:41,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:13:41,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:41,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:13:41,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:13:41,056 INFO L87 Difference]: Start difference. First operand 17104 states and 21716 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:13:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:41,851 INFO L93 Difference]: Finished difference Result 34185 states and 43489 transitions. [2021-11-06 21:13:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:13:41,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 217 [2021-11-06 21:13:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:41,921 INFO L225 Difference]: With dead ends: 34185 [2021-11-06 21:13:41,922 INFO L226 Difference]: Without dead ends: 17109 [2021-11-06 21:13:42,010 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 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 21:13:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17109 states. [2021-11-06 21:13:42,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17109 to 17105. [2021-11-06 21:13:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17105 states, 16950 states have (on average 1.2709734513274336) internal successors, (21543), 16996 states have internal predecessors, (21543), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17105 states to 17105 states and 21717 transitions. [2021-11-06 21:13:42,626 INFO L78 Accepts]: Start accepts. Automaton has 17105 states and 21717 transitions. Word has length 217 [2021-11-06 21:13:42,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:42,627 INFO L470 AbstractCegarLoop]: Abstraction has 17105 states and 21717 transitions. [2021-11-06 21:13:42,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:13:42,627 INFO L276 IsEmpty]: Start isEmpty. Operand 17105 states and 21717 transitions. [2021-11-06 21:13:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-06 21:13:42,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:42,702 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:42,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 21:13:42,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:13:42,923 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:42,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:42,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2146939704, now seen corresponding path program 1 times [2021-11-06 21:13:42,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:42,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950304297] [2021-11-06 21:13:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:42,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:43,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:43,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950304297] [2021-11-06 21:13:43,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-06 21:13:43,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863000631] [2021-11-06 21:13:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:43,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:13:43,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:13:43,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:13:43,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 21:13:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:45,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 4231 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 21:13:45,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:13:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 21:13:45,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863000631] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 21:13:45,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 21:13:45,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-06 21:13:45,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824046725] [2021-11-06 21:13:45,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:13:45,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:13:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:13:45,781 INFO L87 Difference]: Start difference. First operand 17105 states and 21717 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:13:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:46,580 INFO L93 Difference]: Finished difference Result 34203 states and 43514 transitions. [2021-11-06 21:13:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:13:46,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 221 [2021-11-06 21:13:46,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:46,637 INFO L225 Difference]: With dead ends: 34203 [2021-11-06 21:13:46,637 INFO L226 Difference]: Without dead ends: 17126 [2021-11-06 21:13:46,706 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:13:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17126 states. [2021-11-06 21:13:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17126 to 17117. [2021-11-06 21:13:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17117 states, 16962 states have (on average 1.2709586133710646) internal successors, (21558), 17008 states have internal predecessors, (21558), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17117 states to 17117 states and 21732 transitions. [2021-11-06 21:13:47,329 INFO L78 Accepts]: Start accepts. Automaton has 17117 states and 21732 transitions. Word has length 221 [2021-11-06 21:13:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:47,329 INFO L470 AbstractCegarLoop]: Abstraction has 17117 states and 21732 transitions. [2021-11-06 21:13:47,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:13:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 17117 states and 21732 transitions. [2021-11-06 21:13:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-06 21:13:47,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:47,405 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:47,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 21:13:47,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-06 21:13:47,606 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:47,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:47,607 INFO L85 PathProgramCache]: Analyzing trace with hash -683434145, now seen corresponding path program 2 times [2021-11-06 21:13:47,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:47,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438312413] [2021-11-06 21:13:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:47,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:47,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:47,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438312413] [2021-11-06 21:13:47,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-06 21:13:47,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107663808] [2021-11-06 21:13:47,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 21:13:47,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:13:47,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:13:47,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:13:47,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 21:13:49,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 21:13:49,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 21:13:49,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-06 21:13:49,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:13:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-06 21:13:50,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107663808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:13:50,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:13:50,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 21:13:50,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022828277] [2021-11-06 21:13:50,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 21:13:50,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:50,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 21:13:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-06 21:13:50,479 INFO L87 Difference]: Start difference. First operand 17117 states and 21732 transitions. Second operand has 9 states, 9 states have (on average 22.0) internal successors, (198), 9 states have internal predecessors, (198), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-06 21:13:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:51,997 INFO L93 Difference]: Finished difference Result 38792 states and 49123 transitions. [2021-11-06 21:13:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 21:13:51,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.0) internal successors, (198), 9 states have internal predecessors, (198), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 225 [2021-11-06 21:13:51,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:52,062 INFO L225 Difference]: With dead ends: 38792 [2021-11-06 21:13:52,063 INFO L226 Difference]: Without dead ends: 21702 [2021-11-06 21:13:52,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-11-06 21:13:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21702 states. [2021-11-06 21:13:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21702 to 17125. [2021-11-06 21:13:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17125 states, 16970 states have (on average 1.2708308780200352) internal successors, (21566), 17016 states have internal predecessors, (21566), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17125 states to 17125 states and 21740 transitions. [2021-11-06 21:13:53,065 INFO L78 Accepts]: Start accepts. Automaton has 17125 states and 21740 transitions. Word has length 225 [2021-11-06 21:13:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:53,065 INFO L470 AbstractCegarLoop]: Abstraction has 17125 states and 21740 transitions. [2021-11-06 21:13:53,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.0) internal successors, (198), 9 states have internal predecessors, (198), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-06 21:13:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 17125 states and 21740 transitions. [2021-11-06 21:13:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-06 21:13:53,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:53,136 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:53,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 21:13:53,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-06 21:13:53,337 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:53,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:53,338 INFO L85 PathProgramCache]: Analyzing trace with hash 898138724, now seen corresponding path program 1 times [2021-11-06 21:13:53,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:53,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977722703] [2021-11-06 21:13:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:53,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:53,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:53,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977722703] [2021-11-06 21:13:53,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-06 21:13:53,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578918038] [2021-11-06 21:13:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:53,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:13:53,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:13:53,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:13:53,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 21:13:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:55,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 4259 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 21:13:55,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:13:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 21:13:56,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578918038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 21:13:56,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 21:13:56,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-06 21:13:56,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272060875] [2021-11-06 21:13:56,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 21:13:56,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:13:56,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 21:13:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 21:13:56,417 INFO L87 Difference]: Start difference. First operand 17125 states and 21740 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:13:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:13:57,448 INFO L93 Difference]: Finished difference Result 34243 states and 43560 transitions. [2021-11-06 21:13:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:13:57,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 227 [2021-11-06 21:13:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:13:57,499 INFO L225 Difference]: With dead ends: 34243 [2021-11-06 21:13:57,499 INFO L226 Difference]: Without dead ends: 17146 [2021-11-06 21:13:57,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 21:13:57,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17146 states. [2021-11-06 21:13:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17146 to 17137. [2021-11-06 21:13:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17137 states, 16982 states have (on average 1.2708161582852433) internal successors, (21581), 17028 states have internal predecessors, (21581), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:13:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17137 states to 17137 states and 21755 transitions. [2021-11-06 21:13:58,414 INFO L78 Accepts]: Start accepts. Automaton has 17137 states and 21755 transitions. Word has length 227 [2021-11-06 21:13:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:13:58,414 INFO L470 AbstractCegarLoop]: Abstraction has 17137 states and 21755 transitions. [2021-11-06 21:13:58,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:13:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 17137 states and 21755 transitions. [2021-11-06 21:13:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-06 21:13:58,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:13:58,486 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:58,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 21:13:58,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-06 21:13:58,687 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:13:58,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:13:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1458437084, now seen corresponding path program 1 times [2021-11-06 21:13:58,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:13:58,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596185894] [2021-11-06 21:13:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:58,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:13:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:13:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-06 21:13:58,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:13:58,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596185894] [2021-11-06 21:13:58,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-06 21:13:58,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754835680] [2021-11-06 21:13:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:13:58,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:13:58,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:13:58,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:13:59,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 21:14:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:01,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 5458 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 21:14:01,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:14:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 21:14:02,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754835680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:14:02,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:14:02,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:14:02,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259884811] [2021-11-06 21:14:02,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:14:02,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:14:02,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:14:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 21:14:02,270 INFO L87 Difference]: Start difference. First operand 17137 states and 21755 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-06 21:14:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:14:03,117 INFO L93 Difference]: Finished difference Result 34251 states and 43487 transitions. [2021-11-06 21:14:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:14:03,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 336 [2021-11-06 21:14:03,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:14:03,192 INFO L225 Difference]: With dead ends: 34251 [2021-11-06 21:14:03,193 INFO L226 Difference]: Without dead ends: 17142 [2021-11-06 21:14:03,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 21:14:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17142 states. [2021-11-06 21:14:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17142 to 17138. [2021-11-06 21:14:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17138 states, 16983 states have (on average 1.2708002119766826) internal successors, (21582), 17029 states have internal predecessors, (21582), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:14:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17138 states to 17138 states and 21756 transitions. [2021-11-06 21:14:04,165 INFO L78 Accepts]: Start accepts. Automaton has 17138 states and 21756 transitions. Word has length 336 [2021-11-06 21:14:04,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:14:04,166 INFO L470 AbstractCegarLoop]: Abstraction has 17138 states and 21756 transitions. [2021-11-06 21:14:04,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-06 21:14:04,166 INFO L276 IsEmpty]: Start isEmpty. Operand 17138 states and 21756 transitions. [2021-11-06 21:14:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-06 21:14:04,241 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:14:04,242 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:04,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 21:14:04,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:04,443 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:14:04,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:14:04,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1405028213, now seen corresponding path program 2 times [2021-11-06 21:14:04,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:14:04,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742965552] [2021-11-06 21:14:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:04,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:14:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:04,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:14:04,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742965552] [2021-11-06 21:14:04,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-06 21:14:04,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689683035] [2021-11-06 21:14:04,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 21:14:04,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:04,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:14:04,606 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:14:04,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 21:14:06,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 21:14:06,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 21:14:06,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 3203 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-06 21:14:06,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:14:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-06 21:14:07,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689683035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:14:07,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:14:07,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 21:14:07,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516428530] [2021-11-06 21:14:07,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 21:14:07,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:14:07,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 21:14:07,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-06 21:14:07,630 INFO L87 Difference]: Start difference. First operand 17138 states and 21756 transitions. Second operand has 9 states, 9 states have (on average 22.22222222222222) internal successors, (200), 9 states have internal predecessors, (200), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-06 21:14:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:14:10,094 INFO L93 Difference]: Finished difference Result 43416 states and 54854 transitions. [2021-11-06 21:14:10,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 21:14:10,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.22222222222222) internal successors, (200), 9 states have internal predecessors, (200), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 231 [2021-11-06 21:14:10,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:14:10,182 INFO L225 Difference]: With dead ends: 43416 [2021-11-06 21:14:10,182 INFO L226 Difference]: Without dead ends: 26305 [2021-11-06 21:14:10,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-06 21:14:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26305 states. [2021-11-06 21:14:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26305 to 17138. [2021-11-06 21:14:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17138 states, 16983 states have (on average 1.2708002119766826) internal successors, (21582), 17029 states have internal predecessors, (21582), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:14:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17138 states to 17138 states and 21756 transitions. [2021-11-06 21:14:11,367 INFO L78 Accepts]: Start accepts. Automaton has 17138 states and 21756 transitions. Word has length 231 [2021-11-06 21:14:11,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:14:11,367 INFO L470 AbstractCegarLoop]: Abstraction has 17138 states and 21756 transitions. [2021-11-06 21:14:11,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.22222222222222) internal successors, (200), 9 states have internal predecessors, (200), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-06 21:14:11,367 INFO L276 IsEmpty]: Start isEmpty. Operand 17138 states and 21756 transitions. [2021-11-06 21:14:11,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-11-06 21:14:11,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:14:11,451 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:11,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 21:14:11,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-06 21:14:11,655 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:14:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:14:11,655 INFO L85 PathProgramCache]: Analyzing trace with hash 784991911, now seen corresponding path program 1 times [2021-11-06 21:14:11,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:14:11,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465477697] [2021-11-06 21:14:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:11,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:14:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-06 21:14:11,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:14:11,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465477697] [2021-11-06 21:14:11,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-06 21:14:11,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111195035] [2021-11-06 21:14:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:11,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:11,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:14:11,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:14:11,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 21:14:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:14,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 5472 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 21:14:14,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:14:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 21:14:15,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111195035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:14:15,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:14:15,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:14:15,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531610062] [2021-11-06 21:14:15,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:14:15,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:14:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:14:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:15,388 INFO L87 Difference]: Start difference. First operand 17138 states and 21756 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-06 21:14:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:14:16,667 INFO L93 Difference]: Finished difference Result 39141 states and 49564 transitions. [2021-11-06 21:14:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:14:16,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 341 [2021-11-06 21:14:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:14:16,733 INFO L225 Difference]: With dead ends: 39141 [2021-11-06 21:14:16,733 INFO L226 Difference]: Without dead ends: 22031 [2021-11-06 21:14:16,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:16,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22031 states. [2021-11-06 21:14:17,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22031 to 17149. [2021-11-06 21:14:17,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17149 states, 16994 states have (on average 1.2709191479345652) internal successors, (21598), 17040 states have internal predecessors, (21598), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:14:17,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17149 states to 17149 states and 21772 transitions. [2021-11-06 21:14:17,744 INFO L78 Accepts]: Start accepts. Automaton has 17149 states and 21772 transitions. Word has length 341 [2021-11-06 21:14:17,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:14:17,745 INFO L470 AbstractCegarLoop]: Abstraction has 17149 states and 21772 transitions. [2021-11-06 21:14:17,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-06 21:14:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 17149 states and 21772 transitions. [2021-11-06 21:14:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-06 21:14:17,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:14:17,844 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:17,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 21:14:18,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:18,046 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:14:18,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:14:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash 616889923, now seen corresponding path program 1 times [2021-11-06 21:14:18,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:14:18,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584836755] [2021-11-06 21:14:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:18,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:14:18,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 21:14:18,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89118592] [2021-11-06 21:14:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:18,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:18,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:14:18,169 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:14:18,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 21:14:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:20,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 4383 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 21:14:20,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:14:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 21:14:21,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:14:21,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584836755] [2021-11-06 21:14:21,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 21:14:21,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89118592] [2021-11-06 21:14:21,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89118592] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 21:14:21,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 21:14:21,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-06 21:14:21,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117776782] [2021-11-06 21:14:21,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 21:14:21,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:14:21,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 21:14:21,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:21,233 INFO L87 Difference]: Start difference. First operand 17149 states and 21772 transitions. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:14:22,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:14:22,304 INFO L93 Difference]: Finished difference Result 34291 states and 43624 transitions. [2021-11-06 21:14:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 21:14:22,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 242 [2021-11-06 21:14:22,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:14:22,530 INFO L225 Difference]: With dead ends: 34291 [2021-11-06 21:14:22,531 INFO L226 Difference]: Without dead ends: 17170 [2021-11-06 21:14:22,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17170 states. [2021-11-06 21:14:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17170 to 17161. [2021-11-06 21:14:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17161 states, 17006 states have (on average 1.2709043866870515) internal successors, (21613), 17052 states have internal predecessors, (21613), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:14:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17161 states to 17161 states and 21787 transitions. [2021-11-06 21:14:23,457 INFO L78 Accepts]: Start accepts. Automaton has 17161 states and 21787 transitions. Word has length 242 [2021-11-06 21:14:23,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:14:23,458 INFO L470 AbstractCegarLoop]: Abstraction has 17161 states and 21787 transitions. [2021-11-06 21:14:23,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-06 21:14:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 17161 states and 21787 transitions. [2021-11-06 21:14:23,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-06 21:14:23,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:14:23,539 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:23,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 21:14:23,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-06 21:14:23,739 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:14:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:14:23,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1863216362, now seen corresponding path program 2 times [2021-11-06 21:14:23,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:14:23,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44304360] [2021-11-06 21:14:23,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:23,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:14:23,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 21:14:23,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994782558] [2021-11-06 21:14:23,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 21:14:23,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:23,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:14:23,859 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:14:23,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 21:14:26,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 21:14:26,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 21:14:26,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 3316 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-06 21:14:26,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:14:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-06 21:14:26,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:14:26,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44304360] [2021-11-06 21:14:26,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 21:14:26,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994782558] [2021-11-06 21:14:26,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994782558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:14:26,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:14:26,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 21:14:26,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458985440] [2021-11-06 21:14:26,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 21:14:26,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:14:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 21:14:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-06 21:14:26,842 INFO L87 Difference]: Start difference. First operand 17161 states and 21787 transitions. Second operand has 10 states, 10 states have (on average 21.1) internal successors, (211), 10 states have internal predecessors, (211), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-06 21:14:29,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:14:29,091 INFO L93 Difference]: Finished difference Result 38917 states and 49275 transitions. [2021-11-06 21:14:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 21:14:29,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.1) internal successors, (211), 10 states have internal predecessors, (211), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 246 [2021-11-06 21:14:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:14:29,152 INFO L225 Difference]: With dead ends: 38917 [2021-11-06 21:14:29,152 INFO L226 Difference]: Without dead ends: 21783 [2021-11-06 21:14:29,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2021-11-06 21:14:29,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21783 states. [2021-11-06 21:14:30,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21783 to 17165. [2021-11-06 21:14:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 17010 states have (on average 1.270840681951793) internal successors, (21617), 17056 states have internal predecessors, (21617), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:14:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 21791 transitions. [2021-11-06 21:14:30,152 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 21791 transitions. Word has length 246 [2021-11-06 21:14:30,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:14:30,152 INFO L470 AbstractCegarLoop]: Abstraction has 17165 states and 21791 transitions. [2021-11-06 21:14:30,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.1) internal successors, (211), 10 states have internal predecessors, (211), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-06 21:14:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 21791 transitions. [2021-11-06 21:14:30,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-06 21:14:30,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:14:30,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:30,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 21:14:30,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-06 21:14:30,439 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:14:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:14:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1665840272, now seen corresponding path program 1 times [2021-11-06 21:14:30,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:14:30,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122125871] [2021-11-06 21:14:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:30,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:14:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-06 21:14:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:14:30,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:14:30,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122125871] [2021-11-06 21:14:30,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122125871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 21:14:30,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968201636] [2021-11-06 21:14:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:30,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:30,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:14:30,860 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:14:30,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 21:14:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:33,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 4338 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 21:14:33,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:14:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 21:14:33,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968201636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:14:33,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 21:14:33,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-06 21:14:33,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180612414] [2021-11-06 21:14:33,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:14:33,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:14:33,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:14:33,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:33,852 INFO L87 Difference]: Start difference. First operand 17165 states and 21791 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:14:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:14:34,854 INFO L93 Difference]: Finished difference Result 34310 states and 43565 transitions. [2021-11-06 21:14:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:14:34,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 235 [2021-11-06 21:14:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:14:34,909 INFO L225 Difference]: With dead ends: 34310 [2021-11-06 21:14:34,909 INFO L226 Difference]: Without dead ends: 17173 [2021-11-06 21:14:34,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17173 states. [2021-11-06 21:14:35,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17173 to 17169. [2021-11-06 21:14:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17169 states, 17014 states have (on average 1.2707770071705655) internal successors, (21621), 17060 states have internal predecessors, (21621), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:14:36,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17169 states to 17169 states and 21795 transitions. [2021-11-06 21:14:36,010 INFO L78 Accepts]: Start accepts. Automaton has 17169 states and 21795 transitions. Word has length 235 [2021-11-06 21:14:36,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:14:36,010 INFO L470 AbstractCegarLoop]: Abstraction has 17169 states and 21795 transitions. [2021-11-06 21:14:36,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:14:36,011 INFO L276 IsEmpty]: Start isEmpty. Operand 17169 states and 21795 transitions. [2021-11-06 21:14:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-06 21:14:36,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:14:36,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:36,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-06 21:14:36,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-06 21:14:36,301 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:14:36,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:14:36,302 INFO L85 PathProgramCache]: Analyzing trace with hash 300478516, now seen corresponding path program 1 times [2021-11-06 21:14:36,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:14:36,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333305176] [2021-11-06 21:14:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:36,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:14:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:36,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-06 21:14:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 21:14:36,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:14:36,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333305176] [2021-11-06 21:14:36,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333305176] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 21:14:36,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903196058] [2021-11-06 21:14:36,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:36,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:36,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:14:36,547 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:14:36,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 21:14:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:39,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 4343 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 21:14:39,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:14:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 21:14:39,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903196058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:14:39,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 21:14:39,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-06 21:14:39,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511747856] [2021-11-06 21:14:39,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:14:39,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:14:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:14:39,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:39,647 INFO L87 Difference]: Start difference. First operand 17169 states and 21795 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:14:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:14:40,622 INFO L93 Difference]: Finished difference Result 34312 states and 43564 transitions. [2021-11-06 21:14:40,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:14:40,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2021-11-06 21:14:40,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:14:40,816 INFO L225 Difference]: With dead ends: 34312 [2021-11-06 21:14:40,816 INFO L226 Difference]: Without dead ends: 17171 [2021-11-06 21:14:40,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:40,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17171 states. [2021-11-06 21:14:41,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17171 to 17170. [2021-11-06 21:14:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17170 states, 17015 states have (on average 1.2707610931531002) internal successors, (21622), 17061 states have internal predecessors, (21622), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:14:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17170 states to 17170 states and 21796 transitions. [2021-11-06 21:14:41,854 INFO L78 Accepts]: Start accepts. Automaton has 17170 states and 21796 transitions. Word has length 237 [2021-11-06 21:14:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:14:41,855 INFO L470 AbstractCegarLoop]: Abstraction has 17170 states and 21796 transitions. [2021-11-06 21:14:41,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:14:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 17170 states and 21796 transitions. [2021-11-06 21:14:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-06 21:14:41,940 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:14:41,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:41,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-06 21:14:42,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-06 21:14:42,141 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:14:42,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:14:42,141 INFO L85 PathProgramCache]: Analyzing trace with hash 857625296, now seen corresponding path program 1 times [2021-11-06 21:14:42,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:14:42,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419265080] [2021-11-06 21:14:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:42,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:14:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:42,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-06 21:14:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 21:14:42,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:14:42,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419265080] [2021-11-06 21:14:42,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419265080] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 21:14:42,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956667097] [2021-11-06 21:14:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:42,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:42,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:14:42,364 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:14:42,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 21:14:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:45,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 4357 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 21:14:45,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:14:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 21:14:45,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956667097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:14:45,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 21:14:45,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-06 21:14:45,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402993468] [2021-11-06 21:14:45,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:14:45,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:14:45,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:14:45,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:45,541 INFO L87 Difference]: Start difference. First operand 17170 states and 21796 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:14:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:14:46,609 INFO L93 Difference]: Finished difference Result 34316 states and 43569 transitions. [2021-11-06 21:14:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:14:46,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2021-11-06 21:14:46,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:14:46,685 INFO L225 Difference]: With dead ends: 34316 [2021-11-06 21:14:46,685 INFO L226 Difference]: Without dead ends: 17174 [2021-11-06 21:14:46,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:46,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17174 states. [2021-11-06 21:14:47,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17174 to 17172. [2021-11-06 21:14:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17172 states, 17017 states have (on average 1.2707292707292708) internal successors, (21624), 17063 states have internal predecessors, (21624), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:14:47,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17172 states to 17172 states and 21798 transitions. [2021-11-06 21:14:47,926 INFO L78 Accepts]: Start accepts. Automaton has 17172 states and 21798 transitions. Word has length 239 [2021-11-06 21:14:47,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:14:47,926 INFO L470 AbstractCegarLoop]: Abstraction has 17172 states and 21798 transitions. [2021-11-06 21:14:47,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:14:47,926 INFO L276 IsEmpty]: Start isEmpty. Operand 17172 states and 21798 transitions. [2021-11-06 21:14:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-06 21:14:48,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:14:48,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:48,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-06 21:14:48,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:48,203 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:14:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:14:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1928981008, now seen corresponding path program 1 times [2021-11-06 21:14:48,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:14:48,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456703623] [2021-11-06 21:14:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:48,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:14:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-06 21:14:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 21:14:48,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:14:48,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456703623] [2021-11-06 21:14:48,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456703623] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 21:14:48,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650304113] [2021-11-06 21:14:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:14:48,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:14:48,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:14:48,476 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:14:48,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-06 21:14:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:14:51,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 4385 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 21:14:51,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:14:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 21:14:51,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650304113] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 21:14:51,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 21:14:51,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-11-06 21:14:51,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948862968] [2021-11-06 21:14:51,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 21:14:51,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:14:51,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 21:14:51,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:14:51,734 INFO L87 Difference]: Start difference. First operand 17172 states and 21798 transitions. Second operand has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 5 states have internal predecessors, (268), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 21:15:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:15:23,784 INFO L93 Difference]: Finished difference Result 36358 states and 46179 transitions. [2021-11-06 21:15:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:15:23,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 5 states have internal predecessors, (268), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 243 [2021-11-06 21:15:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:15:23,853 INFO L225 Difference]: With dead ends: 36358 [2021-11-06 21:15:23,853 INFO L226 Difference]: Without dead ends: 19214 [2021-11-06 21:15:23,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:15:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19214 states. [2021-11-06 21:15:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19214 to 17177. [2021-11-06 21:15:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17177 states, 17022 states have (on average 1.270649747385736) internal successors, (21629), 17068 states have internal predecessors, (21629), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:15:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17177 states to 17177 states and 21803 transitions. [2021-11-06 21:15:24,972 INFO L78 Accepts]: Start accepts. Automaton has 17177 states and 21803 transitions. Word has length 243 [2021-11-06 21:15:24,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:15:24,972 INFO L470 AbstractCegarLoop]: Abstraction has 17177 states and 21803 transitions. [2021-11-06 21:15:24,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 5 states have internal predecessors, (268), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 21:15:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 17177 states and 21803 transitions. [2021-11-06 21:15:25,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-06 21:15:25,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:15:25,059 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:25,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-06 21:15:25,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-06 21:15:25,260 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:15:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:15:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash -367156379, now seen corresponding path program 2 times [2021-11-06 21:15:25,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:15:25,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322309005] [2021-11-06 21:15:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:15:25,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:15:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:15:25,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-06 21:15:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:15:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 21:15:25,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:15:25,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322309005] [2021-11-06 21:15:25,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322309005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:15:25,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:15:25,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 21:15:25,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740694762] [2021-11-06 21:15:25,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 21:15:25,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:15:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 21:15:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 21:15:25,660 INFO L87 Difference]: Start difference. First operand 17177 states and 21803 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:16:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:16:07,006 INFO L93 Difference]: Finished difference Result 36364 states and 46185 transitions. [2021-11-06 21:16:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:16:07,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 248 [2021-11-06 21:16:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:16:07,087 INFO L225 Difference]: With dead ends: 36364 [2021-11-06 21:16:07,087 INFO L226 Difference]: Without dead ends: 19215 [2021-11-06 21:16:07,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:16:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19215 states. [2021-11-06 21:16:08,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19215 to 17181. [2021-11-06 21:16:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17181 states, 17026 states have (on average 1.2705861623399506) internal successors, (21633), 17072 states have internal predecessors, (21633), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:16:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17181 states to 17181 states and 21807 transitions. [2021-11-06 21:16:08,185 INFO L78 Accepts]: Start accepts. Automaton has 17181 states and 21807 transitions. Word has length 248 [2021-11-06 21:16:08,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:16:08,186 INFO L470 AbstractCegarLoop]: Abstraction has 17181 states and 21807 transitions. [2021-11-06 21:16:08,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:16:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 17181 states and 21807 transitions. [2021-11-06 21:16:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-06 21:16:08,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:16:08,264 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:08,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-06 21:16:08,264 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:16:08,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:16:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1798137688, now seen corresponding path program 1 times [2021-11-06 21:16:08,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:16:08,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858692261] [2021-11-06 21:16:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:16:08,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:16:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:16:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-06 21:16:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:16:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 21:16:08,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:16:08,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858692261] [2021-11-06 21:16:08,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858692261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:16:08,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:16:08,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 21:16:08,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687295264] [2021-11-06 21:16:08,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 21:16:08,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:16:08,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 21:16:08,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:16:08,529 INFO L87 Difference]: Start difference. First operand 17181 states and 21807 transitions. Second operand has 6 states, 6 states have (on average 40.5) internal successors, (243), 5 states have internal predecessors, (243), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:17:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:17:08,896 INFO L93 Difference]: Finished difference Result 36759 states and 46682 transitions. [2021-11-06 21:17:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 21:17:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.5) internal successors, (243), 5 states have internal predecessors, (243), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 250 [2021-11-06 21:17:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:17:08,965 INFO L225 Difference]: With dead ends: 36759 [2021-11-06 21:17:08,965 INFO L226 Difference]: Without dead ends: 19606 [2021-11-06 21:17:09,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 21:17:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19606 states. [2021-11-06 21:17:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19606 to 17208. [2021-11-06 21:17:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17208 states, 17053 states have (on average 1.2703336656306807) internal successors, (21663), 17099 states have internal predecessors, (21663), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:17:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17208 states to 17208 states and 21837 transitions. [2021-11-06 21:17:10,108 INFO L78 Accepts]: Start accepts. Automaton has 17208 states and 21837 transitions. Word has length 250 [2021-11-06 21:17:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:17:10,108 INFO L470 AbstractCegarLoop]: Abstraction has 17208 states and 21837 transitions. [2021-11-06 21:17:10,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.5) internal successors, (243), 5 states have internal predecessors, (243), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:17:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 17208 states and 21837 transitions. [2021-11-06 21:17:10,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-06 21:17:10,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:17:10,208 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:10,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-06 21:17:10,208 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:17:10,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:17:10,209 INFO L85 PathProgramCache]: Analyzing trace with hash -248303800, now seen corresponding path program 1 times [2021-11-06 21:17:10,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:17:10,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850049395] [2021-11-06 21:17:10,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:17:10,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:17:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:17:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-06 21:17:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:17:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 21:17:10,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:17:10,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850049395] [2021-11-06 21:17:10,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850049395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:17:10,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:17:10,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 21:17:10,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087007481] [2021-11-06 21:17:10,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 21:17:10,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:17:10,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 21:17:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-06 21:17:10,705 INFO L87 Difference]: Start difference. First operand 17208 states and 21837 transitions. Second operand has 8 states, 8 states have (on average 30.5) internal successors, (244), 7 states have internal predecessors, (244), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:18:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:18:13,109 INFO L93 Difference]: Finished difference Result 36429 states and 46257 transitions. [2021-11-06 21:18:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 21:18:13,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.5) internal successors, (244), 7 states have internal predecessors, (244), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 251 [2021-11-06 21:18:13,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:18:13,176 INFO L225 Difference]: With dead ends: 36429 [2021-11-06 21:18:13,176 INFO L226 Difference]: Without dead ends: 19249 [2021-11-06 21:18:13,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-06 21:18:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19249 states. [2021-11-06 21:18:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19249 to 17211. [2021-11-06 21:18:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17211 states, 17056 states have (on average 1.270344746716698) internal successors, (21667), 17102 states have internal predecessors, (21667), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:18:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17211 states to 17211 states and 21841 transitions. [2021-11-06 21:18:14,301 INFO L78 Accepts]: Start accepts. Automaton has 17211 states and 21841 transitions. Word has length 251 [2021-11-06 21:18:14,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:18:14,301 INFO L470 AbstractCegarLoop]: Abstraction has 17211 states and 21841 transitions. [2021-11-06 21:18:14,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.5) internal successors, (244), 7 states have internal predecessors, (244), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:18:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17211 states and 21841 transitions. [2021-11-06 21:18:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-06 21:18:14,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:18:14,375 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:14,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-06 21:18:14,375 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:18:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:18:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1194627683, now seen corresponding path program 1 times [2021-11-06 21:18:14,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:18:14,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107545124] [2021-11-06 21:18:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:18:14,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:18:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:18:14,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-06 21:18:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:18:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 21:18:14,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:18:14,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107545124] [2021-11-06 21:18:14,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107545124] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 21:18:14,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156142702] [2021-11-06 21:18:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:18:14,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:18:14,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:18:14,639 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 21:18:14,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-06 21:18:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:18:17,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 4462 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 21:18:17,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 21:18:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 21:18:17,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156142702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 21:18:17,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 21:18:17,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-06 21:18:17,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064784961] [2021-11-06 21:18:17,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 21:18:17,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:18:17,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 21:18:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 21:18:17,945 INFO L87 Difference]: Start difference. First operand 17211 states and 21841 transitions. Second operand has 8 states, 8 states have (on average 38.625) internal successors, (309), 7 states have internal predecessors, (309), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 21:19:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:19:01,663 INFO L93 Difference]: Finished difference Result 36457 states and 46291 transitions. [2021-11-06 21:19:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 21:19:01,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 38.625) internal successors, (309), 7 states have internal predecessors, (309), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 252 [2021-11-06 21:19:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:19:01,729 INFO L225 Difference]: With dead ends: 36457 [2021-11-06 21:19:01,729 INFO L226 Difference]: Without dead ends: 19274 [2021-11-06 21:19:01,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 21:19:01,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19274 states. [2021-11-06 21:19:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19274 to 17229. [2021-11-06 21:19:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17229 states, 17074 states have (on average 1.2700597399554878) internal successors, (21685), 17120 states have internal predecessors, (21685), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:19:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17229 states to 17229 states and 21859 transitions. [2021-11-06 21:19:02,892 INFO L78 Accepts]: Start accepts. Automaton has 17229 states and 21859 transitions. Word has length 252 [2021-11-06 21:19:02,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:19:02,892 INFO L470 AbstractCegarLoop]: Abstraction has 17229 states and 21859 transitions. [2021-11-06 21:19:02,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.625) internal successors, (309), 7 states have internal predecessors, (309), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 21:19:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 17229 states and 21859 transitions. [2021-11-06 21:19:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-06 21:19:02,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:02,973 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:03,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-06 21:19:03,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 21:19:03,173 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:19:03,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash 957142370, now seen corresponding path program 2 times [2021-11-06 21:19:03,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:03,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381193891] [2021-11-06 21:19:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:03,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-06 21:19:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-06 21:19:03,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:19:03,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381193891] [2021-11-06 21:19:03,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381193891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:19:03,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:19:03,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 21:19:03,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251739158] [2021-11-06 21:19:03,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 21:19:03,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:19:03,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 21:19:03,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 21:19:03,460 INFO L87 Difference]: Start difference. First operand 17229 states and 21859 transitions. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 4 states have internal predecessors, (245), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:19:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:19:58,392 INFO L93 Difference]: Finished difference Result 41483 states and 52535 transitions. [2021-11-06 21:19:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 21:19:58,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 4 states have internal predecessors, (245), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 259 [2021-11-06 21:19:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:19:58,466 INFO L225 Difference]: With dead ends: 41483 [2021-11-06 21:19:58,466 INFO L226 Difference]: Without dead ends: 24282 [2021-11-06 21:19:58,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 21:19:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24282 states. [2021-11-06 21:19:59,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24282 to 17250. [2021-11-06 21:19:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17250 states, 17095 states have (on average 1.2701959637320854) internal successors, (21714), 17141 states have internal predecessors, (21714), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-06 21:19:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17250 states to 17250 states and 21888 transitions. [2021-11-06 21:19:59,728 INFO L78 Accepts]: Start accepts. Automaton has 17250 states and 21888 transitions. Word has length 259 [2021-11-06 21:19:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:19:59,728 INFO L470 AbstractCegarLoop]: Abstraction has 17250 states and 21888 transitions. [2021-11-06 21:19:59,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 4 states have internal predecessors, (245), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:19:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand 17250 states and 21888 transitions. [2021-11-06 21:19:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-06 21:19:59,803 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:59,803 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:59,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-06 21:19:59,804 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-06 21:19:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1044249078, now seen corresponding path program 1 times [2021-11-06 21:19:59,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:59,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751066787] [2021-11-06 21:19:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:59,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:20:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-06 21:20:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:20:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-06 21:20:00,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:20:00,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751066787] [2021-11-06 21:20:00,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751066787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:20:00,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:20:00,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 21:20:00,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489106871] [2021-11-06 21:20:00,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:20:00,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:20:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:20:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:20:00,097 INFO L87 Difference]: Start difference. First operand 17250 states and 21888 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 21:20:41,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:20:41,494 INFO L93 Difference]: Finished difference Result 36484 states and 46319 transitions. [2021-11-06 21:20:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:20:41,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 261 [2021-11-06 21:20:41,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:20:41,566 INFO L225 Difference]: With dead ends: 36484 [2021-11-06 21:20:41,566 INFO L226 Difference]: Without dead ends: 19262 [2021-11-06 21:20:41,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:20:41,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19262 states.