./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.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 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:42:29,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:42:29,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:42:29,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:42:29,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:42:29,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:42:29,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:42:29,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:42:29,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:42:29,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:42:29,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:42:29,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:42:29,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:42:29,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:42:29,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:42:29,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:42:29,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:42:29,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:42:29,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:42:29,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:42:29,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:42:29,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:42:29,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:42:29,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:42:29,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:42:29,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:42:29,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:42:29,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:42:29,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:42:29,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:42:29,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:42:29,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:42:29,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:42:29,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:42:29,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:42:29,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:42:29,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:42:29,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:42:29,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:42:29,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:42:29,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:42:29,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:42:29,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:42:29,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:42:29,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:42:29,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:42:29,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:42:29,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:42:29,918 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:42:29,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:42:29,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:42:29,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:42:29,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:42:29,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:42:29,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:42:29,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:42:29,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:42:29,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:42:29,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:42:29,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:42:29,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:42:29,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:42:29,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:42:29,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:42:29,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:42:29,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:42:29,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:42:29,921 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:42:29,921 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:42:29,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:42:29,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:42:29,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a [2021-11-06 20:42:30,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:42:30,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:42:30,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:42:30,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:42:30,106 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:42:30,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-06 20:42:30,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3c635b2/f4ab067e05f14d0a803b3c84e91b78fe/FLAG6de8d77c1 [2021-11-06 20:42:30,808 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:42:30,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-06 20:42:30,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3c635b2/f4ab067e05f14d0a803b3c84e91b78fe/FLAG6de8d77c1 [2021-11-06 20:42:31,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3c635b2/f4ab067e05f14d0a803b3c84e91b78fe [2021-11-06 20:42:31,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:42:31,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:42:31,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:42:31,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:42:31,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:42:31,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:42:31" (1/1) ... [2021-11-06 20:42:31,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559ab9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:31, skipping insertion in model container [2021-11-06 20:42:31,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:42:31" (1/1) ... [2021-11-06 20:42:31,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:42:31,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:42:32,776 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2021-11-06 20:42:32,778 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2021-11-06 20:42:32,779 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2021-11-06 20:42:32,779 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2021-11-06 20:42:32,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:42:32,839 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:42:33,091 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2021-11-06 20:42:33,092 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2021-11-06 20:42:33,092 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2021-11-06 20:42:33,093 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2021-11-06 20:42:33,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:42:33,205 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:42:33,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33 WrapperNode [2021-11-06 20:42:33,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:42:33,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:42:33,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:42:33,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:42:33,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (1/1) ... [2021-11-06 20:42:33,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (1/1) ... [2021-11-06 20:42:35,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:42:35,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:42:35,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:42:35,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:42:35,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (1/1) ... [2021-11-06 20:42:35,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (1/1) ... [2021-11-06 20:42:35,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (1/1) ... [2021-11-06 20:42:35,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (1/1) ... [2021-11-06 20:42:35,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (1/1) ... [2021-11-06 20:42:35,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (1/1) ... [2021-11-06 20:42:36,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (1/1) ... [2021-11-06 20:42:36,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:42:36,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:42:36,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:42:36,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:42:36,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (1/1) ... [2021-11-06 20:42:36,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:42:36,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:42:36,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:42:36,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:42:36,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:42:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:42:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:42:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:42:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:42:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:42:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:42:36,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:42:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:42:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:42:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:42:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:42:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:42:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:42:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:42:51,317 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:42:51,318 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 20:42:51,318 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:42:51,318 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:42:51,319 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:42:51,322 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:42:51,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:42:51,406 INFO L299 CfgBuilder]: Removed 19124 assume(true) statements. [2021-11-06 20:42:51,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:42:51 BoogieIcfgContainer [2021-11-06 20:42:51,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:42:51,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:42:51,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:42:51,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:42:51,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:42:31" (1/3) ... [2021-11-06 20:42:51,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd47d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:42:51, skipping insertion in model container [2021-11-06 20:42:51,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:42:33" (2/3) ... [2021-11-06 20:42:51,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd47d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:42:51, skipping insertion in model container [2021-11-06 20:42:51,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:42:51" (3/3) ... [2021-11-06 20:42:51,423 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-06 20:42:51,427 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:42:51,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2021-11-06 20:42:51,485 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:42:51,489 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 20:42:51,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2021-11-06 20:42:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 11769 states, 11703 states have (on average 1.1825173032555756) internal successors, (13839), 11768 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:42:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 20:42:51,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:42:51,744 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 20:42:51,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-06 20:42:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:42:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1274386020, now seen corresponding path program 1 times [2021-11-06 20:42:51,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:42:51,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234390215] [2021-11-06 20:42:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:42:51,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:42:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:42:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:42:52,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:42:52,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234390215] [2021-11-06 20:42:52,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234390215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:42:52,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:42:52,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:42:52,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950153009] [2021-11-06 20:42:52,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:42:52,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:42:52,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:42:52,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:42:52,340 INFO L87 Difference]: Start difference. First operand has 11769 states, 11703 states have (on average 1.1825173032555756) internal successors, (13839), 11768 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.0) 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 20:42:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:42:55,324 INFO L93 Difference]: Finished difference Result 34710 states and 40737 transitions. [2021-11-06 20:42:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:42:55,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) 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 20:42:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:42:55,410 INFO L225 Difference]: With dead ends: 34710 [2021-11-06 20:42:55,410 INFO L226 Difference]: Without dead ends: 22751 [2021-11-06 20:42:55,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:42:55,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22751 states. [2021-11-06 20:42:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22751 to 22235. [2021-11-06 20:42:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22235 states, 22169 states have (on average 1.161712300960801) internal successors, (25754), 22234 states have internal predecessors, (25754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:42:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22235 states to 22235 states and 25754 transitions. [2021-11-06 20:42:56,082 INFO L78 Accepts]: Start accepts. Automaton has 22235 states and 25754 transitions. Word has length 42 [2021-11-06 20:42:56,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:42:56,083 INFO L470 AbstractCegarLoop]: Abstraction has 22235 states and 25754 transitions. [2021-11-06 20:42:56,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) 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 20:42:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 22235 states and 25754 transitions. [2021-11-06 20:42:56,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 20:42:56,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:42:56,090 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:42:56,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:42:56,090 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-06 20:42:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:42:56,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1532558275, now seen corresponding path program 1 times [2021-11-06 20:42:56,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:42:56,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185672814] [2021-11-06 20:42:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:42:56,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:42:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:42:56,209 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 20:42:56,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:42:56,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185672814] [2021-11-06 20:42:56,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185672814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:42:56,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:42:56,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:42:56,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243414407] [2021-11-06 20:42:56,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:42:56,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:42:56,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:42:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:42:56,213 INFO L87 Difference]: Start difference. First operand 22235 states and 25754 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:42:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:42:59,212 INFO L93 Difference]: Finished difference Result 66291 states and 76801 transitions. [2021-11-06 20:42:59,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:42:59,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-06 20:42:59,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:42:59,320 INFO L225 Difference]: With dead ends: 66291 [2021-11-06 20:42:59,320 INFO L226 Difference]: Without dead ends: 44124 [2021-11-06 20:42:59,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:42:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44124 states. [2021-11-06 20:43:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44124 to 44070. [2021-11-06 20:43:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44070 states, 44004 states have (on average 1.1608944641396237) internal successors, (51084), 44069 states have internal predecessors, (51084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44070 states to 44070 states and 51084 transitions. [2021-11-06 20:43:00,452 INFO L78 Accepts]: Start accepts. Automaton has 44070 states and 51084 transitions. Word has length 43 [2021-11-06 20:43:00,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:43:00,452 INFO L470 AbstractCegarLoop]: Abstraction has 44070 states and 51084 transitions. [2021-11-06 20:43:00,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:00,453 INFO L276 IsEmpty]: Start isEmpty. Operand 44070 states and 51084 transitions. [2021-11-06 20:43:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 20:43:00,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:43:00,456 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 20:43:00,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:43:00,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-06 20:43:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:43:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1662480865, now seen corresponding path program 1 times [2021-11-06 20:43:00,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:43:00,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116830428] [2021-11-06 20:43:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:43:00,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:43:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:43:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:43:00,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:43:00,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116830428] [2021-11-06 20:43:00,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116830428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:43:00,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:43:00,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:43:00,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976500753] [2021-11-06 20:43:00,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:43:00,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:43:00,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:43:00,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:43:00,628 INFO L87 Difference]: Start difference. First operand 44070 states and 51084 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) 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 20:43:04,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:43:04,312 INFO L93 Difference]: Finished difference Result 120460 states and 139842 transitions. [2021-11-06 20:43:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:43:04,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) 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 20:43:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:43:04,495 INFO L225 Difference]: With dead ends: 120460 [2021-11-06 20:43:04,496 INFO L226 Difference]: Without dead ends: 76458 [2021-11-06 20:43:04,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:43:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76458 states. [2021-11-06 20:43:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76458 to 76136. [2021-11-06 20:43:06,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76136 states, 76070 states have (on average 1.163533587485211) internal successors, (88510), 76135 states have internal predecessors, (88510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76136 states to 76136 states and 88510 transitions. [2021-11-06 20:43:06,435 INFO L78 Accepts]: Start accepts. Automaton has 76136 states and 88510 transitions. Word has length 44 [2021-11-06 20:43:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:43:06,435 INFO L470 AbstractCegarLoop]: Abstraction has 76136 states and 88510 transitions. [2021-11-06 20:43:06,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) 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 20:43:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 76136 states and 88510 transitions. [2021-11-06 20:43:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 20:43:06,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:43:06,437 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] [2021-11-06 20:43:06,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:43:06,438 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-06 20:43:06,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:43:06,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1690478766, now seen corresponding path program 1 times [2021-11-06 20:43:06,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:43:06,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837634932] [2021-11-06 20:43:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:43:06,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:43:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:43:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:43:06,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:43:06,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837634932] [2021-11-06 20:43:06,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837634932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:43:06,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:43:06,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:43:06,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19259565] [2021-11-06 20:43:06,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:43:06,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:43:06,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:43:06,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:43:06,756 INFO L87 Difference]: Start difference. First operand 76136 states and 88510 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:10,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:43:10,306 INFO L93 Difference]: Finished difference Result 126694 states and 147758 transitions. [2021-11-06 20:43:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:43:10,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2021-11-06 20:43:10,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:43:10,442 INFO L225 Difference]: With dead ends: 126694 [2021-11-06 20:43:10,442 INFO L226 Difference]: Without dead ends: 50626 [2021-11-06 20:43:10,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:43:10,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50626 states. [2021-11-06 20:43:11,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50626 to 50502. [2021-11-06 20:43:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50502 states, 50436 states have (on average 1.172218256800698) internal successors, (59122), 50501 states have internal predecessors, (59122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50502 states to 50502 states and 59122 transitions. [2021-11-06 20:43:11,795 INFO L78 Accepts]: Start accepts. Automaton has 50502 states and 59122 transitions. Word has length 47 [2021-11-06 20:43:11,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:43:11,796 INFO L470 AbstractCegarLoop]: Abstraction has 50502 states and 59122 transitions. [2021-11-06 20:43:11,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:11,796 INFO L276 IsEmpty]: Start isEmpty. Operand 50502 states and 59122 transitions. [2021-11-06 20:43:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 20:43:11,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:43:11,797 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] [2021-11-06 20:43:11,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:43:11,798 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-06 20:43:11,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:43:11,799 INFO L85 PathProgramCache]: Analyzing trace with hash 565947639, now seen corresponding path program 1 times [2021-11-06 20:43:11,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:43:11,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952827301] [2021-11-06 20:43:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:43:11,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:43:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:43:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:43:11,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:43:11,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952827301] [2021-11-06 20:43:11,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952827301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:43:11,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:43:11,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:43:11,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180062386] [2021-11-06 20:43:11,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:43:11,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:43:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:43:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:43:11,907 INFO L87 Difference]: Start difference. First operand 50502 states and 59122 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:43:15,854 INFO L93 Difference]: Finished difference Result 142552 states and 166204 transitions. [2021-11-06 20:43:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:43:15,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 20:43:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:43:16,046 INFO L225 Difference]: With dead ends: 142552 [2021-11-06 20:43:16,046 INFO L226 Difference]: Without dead ends: 92118 [2021-11-06 20:43:16,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:43:16,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92118 states. [2021-11-06 20:43:18,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92118 to 91680. [2021-11-06 20:43:18,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91680 states, 91614 states have (on average 1.1642434562403126) internal successors, (106661), 91679 states have internal predecessors, (106661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91680 states to 91680 states and 106661 transitions. [2021-11-06 20:43:18,321 INFO L78 Accepts]: Start accepts. Automaton has 91680 states and 106661 transitions. Word has length 51 [2021-11-06 20:43:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:43:18,322 INFO L470 AbstractCegarLoop]: Abstraction has 91680 states and 106661 transitions. [2021-11-06 20:43:18,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:18,322 INFO L276 IsEmpty]: Start isEmpty. Operand 91680 states and 106661 transitions. [2021-11-06 20:43:18,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 20:43:18,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:43:18,323 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:43:18,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:43:18,323 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-06 20:43:18,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:43:18,324 INFO L85 PathProgramCache]: Analyzing trace with hash 400041987, now seen corresponding path program 1 times [2021-11-06 20:43:18,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:43:18,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732572791] [2021-11-06 20:43:18,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:43:18,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:43:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:43:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:43:18,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:43:18,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732572791] [2021-11-06 20:43:18,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732572791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:43:18,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:43:18,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:43:18,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808478848] [2021-11-06 20:43:18,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:43:18,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:43:18,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:43:18,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:43:18,428 INFO L87 Difference]: Start difference. First operand 91680 states and 106661 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:23,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:43:23,834 INFO L93 Difference]: Finished difference Result 269219 states and 313338 transitions. [2021-11-06 20:43:23,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:43:23,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-06 20:43:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:43:24,473 INFO L225 Difference]: With dead ends: 269219 [2021-11-06 20:43:24,473 INFO L226 Difference]: Without dead ends: 177607 [2021-11-06 20:43:24,743 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:43:24,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177607 states. [2021-11-06 20:43:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177607 to 177283. [2021-11-06 20:43:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177283 states, 177217 states have (on average 1.1647076747716076) internal successors, (206406), 177282 states have internal predecessors, (206406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177283 states to 177283 states and 206406 transitions. [2021-11-06 20:43:29,052 INFO L78 Accepts]: Start accepts. Automaton has 177283 states and 206406 transitions. Word has length 59 [2021-11-06 20:43:29,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:43:29,054 INFO L470 AbstractCegarLoop]: Abstraction has 177283 states and 206406 transitions. [2021-11-06 20:43:29,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:43:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 177283 states and 206406 transitions. [2021-11-06 20:43:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 20:43:29,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:43:29,056 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:43:29,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:43:29,057 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-06 20:43:29,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:43:29,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1066114040, now seen corresponding path program 1 times [2021-11-06 20:43:29,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:43:29,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789130784] [2021-11-06 20:43:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:43:29,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:43:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:43:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:43:29,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:43:29,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789130784] [2021-11-06 20:43:29,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789130784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:43:29,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:43:29,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 20:43:29,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360133137] [2021-11-06 20:43:29,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:43:29,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:43:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:43:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:43:29,284 INFO L87 Difference]: Start difference. First operand 177283 states and 206406 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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)