./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.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 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:06:32,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:06:32,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:06:32,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:06:32,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:06:32,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:06:32,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:06:32,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:06:32,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:06:32,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:06:32,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:06:32,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:06:32,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:06:32,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:06:32,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:06:32,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:06:32,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:06:32,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:06:32,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:06:32,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:06:32,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:06:32,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:06:32,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:06:32,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:06:32,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:06:32,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:06:32,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:06:32,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:06:32,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:06:32,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:06:32,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:06:32,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:06:32,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:06:32,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:06:32,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:06:32,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:06:32,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:06:32,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:06:32,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:06:32,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:06:32,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:06:33,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:06:33,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:06:33,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:06:33,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:06:33,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:06:33,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:06:33,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:06:33,022 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:06:33,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:06:33,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:06:33,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:06:33,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:06:33,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:06:33,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:06:33,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:06:33,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:06:33,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:06:33,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:06:33,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:06:33,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:06:33,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:06:33,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:06:33,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:06:33,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:06:33,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:06:33,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:06:33,026 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:06:33,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:06:33,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:06:33,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:06:33,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 [2021-11-06 19:06:33,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:06:33,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:06:33,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:06:33,218 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:06:33,220 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:06:33,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-06 19:06:33,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9f7703c/8abc81784b1347a1ad0678c2928648f9/FLAG513a64d2b [2021-11-06 19:06:33,924 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:06:33,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-06 19:06:33,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9f7703c/8abc81784b1347a1ad0678c2928648f9/FLAG513a64d2b [2021-11-06 19:06:34,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9f7703c/8abc81784b1347a1ad0678c2928648f9 [2021-11-06 19:06:34,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:06:34,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:06:34,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:06:34,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:06:34,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:06:34,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:06:34" (1/1) ... [2021-11-06 19:06:34,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c00e49b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:34, skipping insertion in model container [2021-11-06 19:06:34,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:06:34" (1/1) ... [2021-11-06 19:06:34,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:06:34,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:06:36,306 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2021-11-06 19:06:36,310 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2021-11-06 19:06:36,310 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2021-11-06 19:06:36,311 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2021-11-06 19:06:36,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:06:36,357 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:06:36,593 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2021-11-06 19:06:36,594 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2021-11-06 19:06:36,594 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2021-11-06 19:06:36,594 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2021-11-06 19:06:36,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:06:36,715 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:06:36,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36 WrapperNode [2021-11-06 19:06:36,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:06:36,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:06:36,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:06:36,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:06:36,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (1/1) ... [2021-11-06 19:06:36,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (1/1) ... [2021-11-06 19:06:37,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:06:37,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:06:37,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:06:37,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:06:37,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (1/1) ... [2021-11-06 19:06:37,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (1/1) ... [2021-11-06 19:06:37,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (1/1) ... [2021-11-06 19:06:37,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (1/1) ... [2021-11-06 19:06:38,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (1/1) ... [2021-11-06 19:06:38,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (1/1) ... [2021-11-06 19:06:38,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (1/1) ... [2021-11-06 19:06:39,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:06:39,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:06:39,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:06:39,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:06:39,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (1/1) ... [2021-11-06 19:06:39,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:06:39,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:06:39,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 19:06:39,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 19:06:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2021-11-06 19:06:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:06:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:06:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:06:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:06:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2021-11-06 19:06:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2021-11-06 19:06:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:06:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:06:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:06:39,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:06:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:06:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:06:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:06:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:06:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:06:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:06:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2021-11-06 19:06:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:07:53,343 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:07:53,344 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:07:53,344 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:07:53,344 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 19:07:53,345 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:07:53,346 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:07:53,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:07:53,374 INFO L299 CfgBuilder]: Removed 6065 assume(true) statements. [2021-11-06 19:07:53,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:53 BoogieIcfgContainer [2021-11-06 19:07:53,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:07:53,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:07:53,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:07:53,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:07:53,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:06:34" (1/3) ... [2021-11-06 19:07:53,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cad3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:53, skipping insertion in model container [2021-11-06 19:07:53,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:36" (2/3) ... [2021-11-06 19:07:53,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cad3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:53, skipping insertion in model container [2021-11-06 19:07:53,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:53" (3/3) ... [2021-11-06 19:07:53,390 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-06 19:07:53,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:07:53,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-11-06 19:07:53,456 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:07:53,461 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 19:07:53,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-11-06 19:07:53,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 8717 states, 8647 states have (on average 1.456227593384989) internal successors, (12592), 8716 states have internal predecessors, (12592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 19:07:53,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:53,571 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] [2021-11-06 19:07:53,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:07:53,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:53,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1169077711, now seen corresponding path program 1 times [2021-11-06 19:07:53,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:53,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583086214] [2021-11-06 19:07:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:53,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:54,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:54,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583086214] [2021-11-06 19:07:54,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583086214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:54,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:54,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:54,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527228967] [2021-11-06 19:07:54,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:54,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:54,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:54,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:54,206 INFO L87 Difference]: Start difference. First operand has 8717 states, 8647 states have (on average 1.456227593384989) internal successors, (12592), 8716 states have internal predecessors, (12592), 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 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:56,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:56,939 INFO L93 Difference]: Finished difference Result 25562 states and 37025 transitions. [2021-11-06 19:07:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:56,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2021-11-06 19:07:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:57,023 INFO L225 Difference]: With dead ends: 25562 [2021-11-06 19:07:57,024 INFO L226 Difference]: Without dead ends: 16821 [2021-11-06 19:07:57,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16821 states. [2021-11-06 19:07:57,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16821 to 16753. [2021-11-06 19:07:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16753 states, 16683 states have (on average 1.39717077264281) internal successors, (23309), 16752 states have internal predecessors, (23309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16753 states to 16753 states and 23309 transitions. [2021-11-06 19:07:57,506 INFO L78 Accepts]: Start accepts. Automaton has 16753 states and 23309 transitions. Word has length 72 [2021-11-06 19:07:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:57,507 INFO L470 AbstractCegarLoop]: Abstraction has 16753 states and 23309 transitions. [2021-11-06 19:07:57,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 16753 states and 23309 transitions. [2021-11-06 19:07:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 19:07:57,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:57,510 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] [2021-11-06 19:07:57,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:07:57,511 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:07:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash -246882127, now seen corresponding path program 1 times [2021-11-06 19:07:57,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:57,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582337044] [2021-11-06 19:07:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:57,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:57,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:57,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582337044] [2021-11-06 19:07:57,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582337044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:57,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:57,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:57,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290229343] [2021-11-06 19:07:57,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:57,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:57,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:57,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:57,755 INFO L87 Difference]: Start difference. First operand 16753 states and 23309 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:00,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:00,826 INFO L93 Difference]: Finished difference Result 40682 states and 56618 transitions. [2021-11-06 19:08:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:08:00,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2021-11-06 19:08:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:00,907 INFO L225 Difference]: With dead ends: 40682 [2021-11-06 19:08:00,908 INFO L226 Difference]: Without dead ends: 24077 [2021-11-06 19:08:00,942 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:08:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24077 states. [2021-11-06 19:08:01,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24077 to 23849. [2021-11-06 19:08:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23849 states, 23779 states have (on average 1.399217797216031) internal successors, (33272), 23848 states have internal predecessors, (33272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23849 states to 23849 states and 33272 transitions. [2021-11-06 19:08:01,425 INFO L78 Accepts]: Start accepts. Automaton has 23849 states and 33272 transitions. Word has length 86 [2021-11-06 19:08:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:01,427 INFO L470 AbstractCegarLoop]: Abstraction has 23849 states and 33272 transitions. [2021-11-06 19:08:01,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 23849 states and 33272 transitions. [2021-11-06 19:08:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 19:08:01,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:01,436 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:08:01,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:08:01,436 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:08:01,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:01,437 INFO L85 PathProgramCache]: Analyzing trace with hash 37135963, now seen corresponding path program 1 times [2021-11-06 19:08:01,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:01,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395761720] [2021-11-06 19:08:01,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:01,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:08:01,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:01,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395761720] [2021-11-06 19:08:01,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395761720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:01,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:01,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:01,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368418925] [2021-11-06 19:08:01,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:08:01,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:01,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:08:01,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:08:01,717 INFO L87 Difference]: Start difference. First operand 23849 states and 33272 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:04,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:04,533 INFO L93 Difference]: Finished difference Result 55781 states and 77869 transitions. [2021-11-06 19:08:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:08:04,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2021-11-06 19:08:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:04,625 INFO L225 Difference]: With dead ends: 55781 [2021-11-06 19:08:04,625 INFO L226 Difference]: Without dead ends: 39693 [2021-11-06 19:08:04,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:08:04,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39693 states. [2021-11-06 19:08:05,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39693 to 39625. [2021-11-06 19:08:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39625 states, 39555 states have (on average 1.400505625079004) internal successors, (55397), 39624 states have internal predecessors, (55397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39625 states to 39625 states and 55397 transitions. [2021-11-06 19:08:05,832 INFO L78 Accepts]: Start accepts. Automaton has 39625 states and 55397 transitions. Word has length 104 [2021-11-06 19:08:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:05,834 INFO L470 AbstractCegarLoop]: Abstraction has 39625 states and 55397 transitions. [2021-11-06 19:08:05,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 39625 states and 55397 transitions. [2021-11-06 19:08:05,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 19:08:05,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:05,839 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:08:05,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:08:05,840 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:08:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1242727715, now seen corresponding path program 1 times [2021-11-06 19:08:05,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:05,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153629095] [2021-11-06 19:08:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:05,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:08:06,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:06,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153629095] [2021-11-06 19:08:06,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153629095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:06,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:06,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:06,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434595998] [2021-11-06 19:08:06,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:08:06,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:06,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:08:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:08:06,111 INFO L87 Difference]: Start difference. First operand 39625 states and 55397 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:09,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:09,176 INFO L93 Difference]: Finished difference Result 87337 states and 122127 transitions. [2021-11-06 19:08:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:08:09,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2021-11-06 19:08:09,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:09,306 INFO L225 Difference]: With dead ends: 87337 [2021-11-06 19:08:09,307 INFO L226 Difference]: Without dead ends: 55473 [2021-11-06 19:08:09,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:08:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55473 states. [2021-11-06 19:08:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55473 to 55405. [2021-11-06 19:08:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55405 states, 55335 states have (on average 1.4011023764344448) internal successors, (77530), 55404 states have internal predecessors, (77530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:10,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55405 states to 55405 states and 77530 transitions. [2021-11-06 19:08:10,631 INFO L78 Accepts]: Start accepts. Automaton has 55405 states and 77530 transitions. Word has length 104 [2021-11-06 19:08:10,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:10,633 INFO L470 AbstractCegarLoop]: Abstraction has 55405 states and 77530 transitions. [2021-11-06 19:08:10,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 55405 states and 77530 transitions. [2021-11-06 19:08:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 19:08:10,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:10,640 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] [2021-11-06 19:08:10,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:08:10,640 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:08:10,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash 416925785, now seen corresponding path program 1 times [2021-11-06 19:08:10,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:10,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961466027] [2021-11-06 19:08:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:10,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:08:10,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:10,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961466027] [2021-11-06 19:08:10,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961466027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:10,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:10,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:10,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993793269] [2021-11-06 19:08:10,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:08:10,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:10,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:08:10,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:08:10,976 INFO L87 Difference]: Start difference. First operand 55405 states and 77530 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:11,963 INFO L93 Difference]: Finished difference Result 55405 states and 77530 transitions. [2021-11-06 19:08:11,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:08:11,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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 107 [2021-11-06 19:08:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:12,212 INFO L225 Difference]: With dead ends: 55405 [2021-11-06 19:08:12,212 INFO L226 Difference]: Without dead ends: 55399 [2021-11-06 19:08:12,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:08:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55399 states. [2021-11-06 19:08:12,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55399 to 55399. [2021-11-06 19:08:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55399 states, 55332 states have (on average 1.4010699052989228) internal successors, (77524), 55398 states have internal predecessors, (77524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55399 states to 55399 states and 77524 transitions. [2021-11-06 19:08:13,130 INFO L78 Accepts]: Start accepts. Automaton has 55399 states and 77524 transitions. Word has length 107 [2021-11-06 19:08:13,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:13,131 INFO L470 AbstractCegarLoop]: Abstraction has 55399 states and 77524 transitions. [2021-11-06 19:08:13,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 55399 states and 77524 transitions. [2021-11-06 19:08:13,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 19:08:13,135 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:13,135 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] [2021-11-06 19:08:13,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:08:13,137 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:08:13,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1233876444, now seen corresponding path program 1 times [2021-11-06 19:08:13,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:13,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610269201] [2021-11-06 19:08:13,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:13,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:08:13,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:13,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610269201] [2021-11-06 19:08:13,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610269201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:13,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:13,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:13,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38193982] [2021-11-06 19:08:13,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:08:13,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:08:13,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:08:13,586 INFO L87 Difference]: Start difference. First operand 55399 states and 77524 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:14,565 INFO L93 Difference]: Finished difference Result 55399 states and 77524 transitions. [2021-11-06 19:08:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:08:14,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 109 [2021-11-06 19:08:14,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:14,680 INFO L225 Difference]: With dead ends: 55399 [2021-11-06 19:08:14,680 INFO L226 Difference]: Without dead ends: 55393 [2021-11-06 19:08:14,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:08:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55393 states. [2021-11-06 19:08:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55393 to 55393. [2021-11-06 19:08:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55393 states, 55329 states have (on average 1.4010374306421587) internal successors, (77518), 55392 states have internal predecessors, (77518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55393 states to 55393 states and 77518 transitions. [2021-11-06 19:08:15,804 INFO L78 Accepts]: Start accepts. Automaton has 55393 states and 77518 transitions. Word has length 109 [2021-11-06 19:08:15,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:15,804 INFO L470 AbstractCegarLoop]: Abstraction has 55393 states and 77518 transitions. [2021-11-06 19:08:15,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 55393 states and 77518 transitions. [2021-11-06 19:08:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 19:08:15,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:15,809 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] [2021-11-06 19:08:15,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:08:15,811 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:08:15,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:15,811 INFO L85 PathProgramCache]: Analyzing trace with hash 344444895, now seen corresponding path program 1 times [2021-11-06 19:08:15,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:15,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675057679] [2021-11-06 19:08:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:15,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:08:16,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:16,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675057679] [2021-11-06 19:08:16,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675057679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:16,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:16,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:16,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397266320] [2021-11-06 19:08:16,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:08:16,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:16,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:08:16,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:08:16,271 INFO L87 Difference]: Start difference. First operand 55393 states and 77518 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:17,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:17,355 INFO L93 Difference]: Finished difference Result 55393 states and 77518 transitions. [2021-11-06 19:08:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:08:17,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 111 [2021-11-06 19:08:17,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:17,462 INFO L225 Difference]: With dead ends: 55393 [2021-11-06 19:08:17,463 INFO L226 Difference]: Without dead ends: 55387 [2021-11-06 19:08:17,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:08:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55387 states. [2021-11-06 19:08:18,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55387 to 55387. [2021-11-06 19:08:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55387 states, 55326 states have (on average 1.4010049524635795) internal successors, (77512), 55386 states have internal predecessors, (77512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55387 states to 55387 states and 77512 transitions. [2021-11-06 19:08:18,695 INFO L78 Accepts]: Start accepts. Automaton has 55387 states and 77512 transitions. Word has length 111 [2021-11-06 19:08:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:18,695 INFO L470 AbstractCegarLoop]: Abstraction has 55387 states and 77512 transitions. [2021-11-06 19:08:18,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 55387 states and 77512 transitions. [2021-11-06 19:08:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 19:08:18,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:18,701 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] [2021-11-06 19:08:18,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:08:18,702 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:08:18,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:18,702 INFO L85 PathProgramCache]: Analyzing trace with hash 299218530, now seen corresponding path program 1 times [2021-11-06 19:08:18,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:18,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936861429] [2021-11-06 19:08:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:18,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:08:18,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:18,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936861429] [2021-11-06 19:08:18,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936861429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:18,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:18,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:18,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203904394] [2021-11-06 19:08:18,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:08:18,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:18,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:08:18,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:08:18,994 INFO L87 Difference]: Start difference. First operand 55387 states and 77512 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:20,152 INFO L93 Difference]: Finished difference Result 55387 states and 77512 transitions. [2021-11-06 19:08:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:08:20,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 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 113 [2021-11-06 19:08:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:20,239 INFO L225 Difference]: With dead ends: 55387 [2021-11-06 19:08:20,239 INFO L226 Difference]: Without dead ends: 55381 [2021-11-06 19:08:20,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:08:20,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55381 states. [2021-11-06 19:08:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55381 to 55381. [2021-11-06 19:08:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55381 states, 55323 states have (on average 1.4009724707626123) internal successors, (77506), 55380 states have internal predecessors, (77506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55381 states to 55381 states and 77506 transitions. [2021-11-06 19:08:21,402 INFO L78 Accepts]: Start accepts. Automaton has 55381 states and 77506 transitions. Word has length 113 [2021-11-06 19:08:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:21,403 INFO L470 AbstractCegarLoop]: Abstraction has 55381 states and 77506 transitions. [2021-11-06 19:08:21,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 55381 states and 77506 transitions. [2021-11-06 19:08:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 19:08:21,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:21,407 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] [2021-11-06 19:08:21,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:08:21,407 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:08:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:21,408 INFO L85 PathProgramCache]: Analyzing trace with hash -213644955, now seen corresponding path program 1 times [2021-11-06 19:08:21,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:21,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102180818] [2021-11-06 19:08:21,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:21,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:08:21,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:21,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102180818] [2021-11-06 19:08:21,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102180818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:21,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:21,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:21,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138452719] [2021-11-06 19:08:21,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:08:21,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:08:21,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:08:21,662 INFO L87 Difference]: Start difference. First operand 55381 states and 77506 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:22,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:22,754 INFO L93 Difference]: Finished difference Result 55381 states and 77506 transitions. [2021-11-06 19:08:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:08:22,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 115 [2021-11-06 19:08:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:22,856 INFO L225 Difference]: With dead ends: 55381 [2021-11-06 19:08:22,856 INFO L226 Difference]: Without dead ends: 55375 [2021-11-06 19:08:22,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:08:22,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55375 states. [2021-11-06 19:08:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55375 to 55375. [2021-11-06 19:08:23,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55375 states, 55320 states have (on average 1.400939985538684) internal successors, (77500), 55374 states have internal predecessors, (77500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55375 states to 55375 states and 77500 transitions. [2021-11-06 19:08:24,031 INFO L78 Accepts]: Start accepts. Automaton has 55375 states and 77500 transitions. Word has length 115 [2021-11-06 19:08:24,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:24,035 INFO L470 AbstractCegarLoop]: Abstraction has 55375 states and 77500 transitions. [2021-11-06 19:08:24,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand 55375 states and 77500 transitions. [2021-11-06 19:08:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-06 19:08:24,040 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:24,040 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] [2021-11-06 19:08:24,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:08:24,041 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:08:24,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash 845785320, now seen corresponding path program 1 times [2021-11-06 19:08:24,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:24,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175911955] [2021-11-06 19:08:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:24,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:08:24,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:24,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175911955] [2021-11-06 19:08:24,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175911955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:24,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:24,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:24,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400527832] [2021-11-06 19:08:24,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:08:24,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:24,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:08:24,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:08:24,311 INFO L87 Difference]: Start difference. First operand 55375 states and 77500 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:25,564 INFO L93 Difference]: Finished difference Result 55375 states and 77500 transitions. [2021-11-06 19:08:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:08:25,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 117 [2021-11-06 19:08:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:25,652 INFO L225 Difference]: With dead ends: 55375 [2021-11-06 19:08:25,652 INFO L226 Difference]: Without dead ends: 55369 [2021-11-06 19:08:25,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:08:25,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55369 states. [2021-11-06 19:08:26,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55369 to 55369. [2021-11-06 19:08:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55369 states, 55317 states have (on average 1.4009074967912214) internal successors, (77494), 55368 states have internal predecessors, (77494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55369 states to 55369 states and 77494 transitions. [2021-11-06 19:08:27,065 INFO L78 Accepts]: Start accepts. Automaton has 55369 states and 77494 transitions. Word has length 117 [2021-11-06 19:08:27,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:27,065 INFO L470 AbstractCegarLoop]: Abstraction has 55369 states and 77494 transitions. [2021-11-06 19:08:27,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:27,065 INFO L276 IsEmpty]: Start isEmpty. Operand 55369 states and 77494 transitions. [2021-11-06 19:08:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 19:08:27,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:27,069 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] [2021-11-06 19:08:27,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 19:08:27,070 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:08:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1051030763, now seen corresponding path program 1 times [2021-11-06 19:08:27,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:27,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330380126] [2021-11-06 19:08:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:27,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:08:27,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:27,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330380126] [2021-11-06 19:08:27,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330380126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:27,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:27,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:27,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725573907] [2021-11-06 19:08:27,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:08:27,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:27,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:08:27,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:08:27,333 INFO L87 Difference]: Start difference. First operand 55369 states and 77494 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:28,368 INFO L93 Difference]: Finished difference Result 55369 states and 77494 transitions. [2021-11-06 19:08:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:08:28,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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 119 [2021-11-06 19:08:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:28,457 INFO L225 Difference]: With dead ends: 55369 [2021-11-06 19:08:28,457 INFO L226 Difference]: Without dead ends: 55363 [2021-11-06 19:08:28,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:08:28,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55363 states. [2021-11-06 19:08:29,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55363 to 55363. [2021-11-06 19:08:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55363 states, 55314 states have (on average 1.4008750045196514) internal successors, (77488), 55362 states have internal predecessors, (77488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55363 states to 55363 states and 77488 transitions. [2021-11-06 19:08:29,926 INFO L78 Accepts]: Start accepts. Automaton has 55363 states and 77488 transitions. Word has length 119 [2021-11-06 19:08:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:08:29,926 INFO L470 AbstractCegarLoop]: Abstraction has 55363 states and 77488 transitions. [2021-11-06 19:08:29,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:29,927 INFO L276 IsEmpty]: Start isEmpty. Operand 55363 states and 77488 transitions. [2021-11-06 19:08:29,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 19:08:29,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:08:29,931 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] [2021-11-06 19:08:29,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 19:08:29,931 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 67 more)] === [2021-11-06 19:08:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:08:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash 723406190, now seen corresponding path program 1 times [2021-11-06 19:08:29,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:08:29,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658350003] [2021-11-06 19:08:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:08:29,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:08:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:08:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:08:30,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:08:30,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658350003] [2021-11-06 19:08:30,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658350003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:08:30,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:08:30,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:08:30,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839811662] [2021-11-06 19:08:30,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:08:30,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:08:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:08:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:08:30,197 INFO L87 Difference]: Start difference. First operand 55363 states and 77488 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:08:31,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:08:31,893 INFO L93 Difference]: Finished difference Result 55363 states and 77488 transitions. [2021-11-06 19:08:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:08:31,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 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 121 [2021-11-06 19:08:31,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:08:31,972 INFO L225 Difference]: With dead ends: 55363 [2021-11-06 19:08:31,972 INFO L226 Difference]: Without dead ends: 55357 [2021-11-06 19:08:31,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:08:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55357 states. [2021-11-06 19:08:33,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55357 to 55357. [2021-11-06 19:08:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55357 states, 55311 states have (on average 1.4008425087234004) internal successors, (77482), 55356 states have internal predecessors, (77482), 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)