./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.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 59473e3c2ae80c2e7996950da3475e9070fa07527cbe1064da7145ffd0ce24e6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:28:14,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:28:14,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:28:14,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:28:14,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:28:14,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:28:14,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:28:14,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:28:14,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:28:14,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:28:14,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:28:14,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:28:14,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:28:14,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:28:14,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:28:14,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:28:14,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:28:14,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:28:14,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:28:14,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:28:14,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:28:14,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:28:14,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:28:14,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:28:14,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:28:14,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:28:14,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:28:14,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:28:14,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:28:14,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:28:14,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:28:14,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:28:14,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:28:14,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:28:14,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:28:14,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:28:14,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:28:14,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:28:14,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:28:14,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:28:14,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:28:14,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:28:14,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:28:14,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:28:14,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:28:14,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:28:14,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:28:14,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:28:14,097 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:28:14,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:28:14,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:28:14,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:28:14,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:28:14,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:28:14,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:28:14,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:28:14,099 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:28:14,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:28:14,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:28:14,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:28:14,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:28:14,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:28:14,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:28:14,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:28:14,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:28:14,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:28:14,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:28:14,101 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:28:14,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:28:14,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:28:14,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:28:14,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59473e3c2ae80c2e7996950da3475e9070fa07527cbe1064da7145ffd0ce24e6 [2021-11-06 20:28:14,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:28:14,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:28:14,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:28:14,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:28:14,359 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:28:14,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i [2021-11-06 20:28:14,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4f1ccc1/5a0681058c0e464bbc2e1c29aff0d341/FLAGc39c572bf [2021-11-06 20:28:15,179 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:28:15,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i [2021-11-06 20:28:15,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4f1ccc1/5a0681058c0e464bbc2e1c29aff0d341/FLAGc39c572bf [2021-11-06 20:28:15,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4f1ccc1/5a0681058c0e464bbc2e1c29aff0d341 [2021-11-06 20:28:15,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:28:15,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:28:15,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:28:15,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:28:15,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:28:15,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:28:15" (1/1) ... [2021-11-06 20:28:15,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2926d767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:15, skipping insertion in model container [2021-11-06 20:28:15,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:28:15" (1/1) ... [2021-11-06 20:28:15,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:28:15,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:28:17,131 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[358872,358885] [2021-11-06 20:28:17,133 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359038,359051] [2021-11-06 20:28:17,134 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359202,359215] [2021-11-06 20:28:17,134 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359367,359380] [2021-11-06 20:28:17,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:28:17,205 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:28:17,526 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[358872,358885] [2021-11-06 20:28:17,528 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359038,359051] [2021-11-06 20:28:17,528 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359202,359215] [2021-11-06 20:28:17,529 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359367,359380] [2021-11-06 20:28:17,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:28:17,825 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:28:17,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17 WrapperNode [2021-11-06 20:28:17,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:28:17,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:28:17,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:28:17,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:28:17,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2021-11-06 20:28:17,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2021-11-06 20:28:18,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:28:18,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:28:18,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:28:18,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:28:18,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2021-11-06 20:28:18,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2021-11-06 20:28:19,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2021-11-06 20:28:19,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2021-11-06 20:28:19,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2021-11-06 20:28:19,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2021-11-06 20:28:19,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2021-11-06 20:28:19,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:28:19,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:28:19,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:28:19,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:28:19,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2021-11-06 20:28:19,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:28:19,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:28:19,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:28:19,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:28:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:28:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:28:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:28:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:28:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:28:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:28:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:28:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:28:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:28:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:28:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:28:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:28:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:28:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:28:19,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:33:24,290 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:33:24,290 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 20:33:24,290 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-06 20:33:24,290 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-06 20:33:24,291 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-06 20:33:24,291 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:33:24,291 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-06 20:33:24,291 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-06 20:33:24,291 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#9: ldv_switch_0_#res := 0; [2021-11-06 20:33:24,292 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:33:24,292 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#10: ldv_switch_0_#res := 0; [2021-11-06 20:33:24,292 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:33:24,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:33:24,322 INFO L299 CfgBuilder]: Removed 5227 assume(true) statements. [2021-11-06 20:33:24,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:33:24 BoogieIcfgContainer [2021-11-06 20:33:24,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:33:24,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:33:24,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:33:24,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:33:24,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:28:15" (1/3) ... [2021-11-06 20:33:24,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1744d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:33:24, skipping insertion in model container [2021-11-06 20:33:24,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (2/3) ... [2021-11-06 20:33:24,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1744d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:33:24, skipping insertion in model container [2021-11-06 20:33:24,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:33:24" (3/3) ... [2021-11-06 20:33:24,337 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i [2021-11-06 20:33:24,341 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:33:24,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2021-11-06 20:33:24,397 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:33:24,402 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 20:33:24,402 INFO L340 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2021-11-06 20:33:24,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 6581 states, 6495 states have (on average 1.4030792917628945) internal successors, (9113), 6580 states have internal predecessors, (9113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-06 20:33:24,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:33:24,519 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:33:24,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-06 20:33:24,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:33:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash -289390519, now seen corresponding path program 1 times [2021-11-06 20:33:24,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:33:24,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019579283] [2021-11-06 20:33:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:33:24,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:33:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:33:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:33:25,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:33:25,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019579283] [2021-11-06 20:33:25,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019579283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:33:25,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:33:25,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:33:25,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834837463] [2021-11-06 20:33:25,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:33:25,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:33:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:33:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:25,672 INFO L87 Difference]: Start difference. First operand has 6581 states, 6495 states have (on average 1.4030792917628945) internal successors, (9113), 6580 states have internal predecessors, (9113), 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 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:33:28,469 INFO L93 Difference]: Finished difference Result 18522 states and 25764 transitions. [2021-11-06 20:33:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:33:28,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 180 [2021-11-06 20:33:28,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:33:28,547 INFO L225 Difference]: With dead ends: 18522 [2021-11-06 20:33:28,548 INFO L226 Difference]: Without dead ends: 11837 [2021-11-06 20:33:28,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11837 states. [2021-11-06 20:33:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11837 to 11689. [2021-11-06 20:33:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11689 states, 11603 states have (on average 1.3611996897354133) internal successors, (15794), 11688 states have internal predecessors, (15794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11689 states to 11689 states and 15794 transitions. [2021-11-06 20:33:28,929 INFO L78 Accepts]: Start accepts. Automaton has 11689 states and 15794 transitions. Word has length 180 [2021-11-06 20:33:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:33:28,933 INFO L470 AbstractCegarLoop]: Abstraction has 11689 states and 15794 transitions. [2021-11-06 20:33:28,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 11689 states and 15794 transitions. [2021-11-06 20:33:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-06 20:33:28,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:33:28,944 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:33:28,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:33:28,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-06 20:33:28,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:33:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1153823296, now seen corresponding path program 1 times [2021-11-06 20:33:28,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:33:28,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723514752] [2021-11-06 20:33:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:33:28,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:33:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:33:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:33:29,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:33:29,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723514752] [2021-11-06 20:33:29,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723514752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:33:29,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:33:29,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:33:29,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689178392] [2021-11-06 20:33:29,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:33:29,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:33:29,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:33:29,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:29,681 INFO L87 Difference]: Start difference. First operand 11689 states and 15794 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:32,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:33:32,413 INFO L93 Difference]: Finished difference Result 27700 states and 37443 transitions. [2021-11-06 20:33:32,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:33:32,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 186 [2021-11-06 20:33:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:33:32,505 INFO L225 Difference]: With dead ends: 27700 [2021-11-06 20:33:32,507 INFO L226 Difference]: Without dead ends: 16447 [2021-11-06 20:33:32,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16447 states. [2021-11-06 20:33:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16447 to 16263. [2021-11-06 20:33:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16263 states, 16177 states have (on average 1.3603263893181679) internal successors, (22006), 16262 states have internal predecessors, (22006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16263 states to 16263 states and 22006 transitions. [2021-11-06 20:33:32,993 INFO L78 Accepts]: Start accepts. Automaton has 16263 states and 22006 transitions. Word has length 186 [2021-11-06 20:33:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:33:32,995 INFO L470 AbstractCegarLoop]: Abstraction has 16263 states and 22006 transitions. [2021-11-06 20:33:33,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 16263 states and 22006 transitions. [2021-11-06 20:33:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-06 20:33:33,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:33:33,003 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:33:33,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:33:33,004 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-06 20:33:33,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:33:33,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1743281941, now seen corresponding path program 1 times [2021-11-06 20:33:33,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:33:33,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181037223] [2021-11-06 20:33:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:33:33,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:33:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:33:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:33:33,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:33:33,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181037223] [2021-11-06 20:33:33,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181037223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:33:33,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:33:33,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:33:33,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101207786] [2021-11-06 20:33:33,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:33:33,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:33:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:33:33,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:33,450 INFO L87 Difference]: Start difference. First operand 16263 states and 22006 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:33:36,488 INFO L93 Difference]: Finished difference Result 41528 states and 56347 transitions. [2021-11-06 20:33:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:33:36,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 190 [2021-11-06 20:33:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:33:36,577 INFO L225 Difference]: With dead ends: 41528 [2021-11-06 20:33:36,577 INFO L226 Difference]: Without dead ends: 25701 [2021-11-06 20:33:36,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25701 states. [2021-11-06 20:33:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25701 to 25483. [2021-11-06 20:33:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25483 states, 25397 states have (on average 1.3652399889750757) internal successors, (34673), 25482 states have internal predecessors, (34673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:37,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25483 states to 25483 states and 34673 transitions. [2021-11-06 20:33:37,293 INFO L78 Accepts]: Start accepts. Automaton has 25483 states and 34673 transitions. Word has length 190 [2021-11-06 20:33:37,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:33:37,294 INFO L470 AbstractCegarLoop]: Abstraction has 25483 states and 34673 transitions. [2021-11-06 20:33:37,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:37,295 INFO L276 IsEmpty]: Start isEmpty. Operand 25483 states and 34673 transitions. [2021-11-06 20:33:37,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-06 20:33:37,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:33:37,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:33:37,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:33:37,299 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-06 20:33:37,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:33:37,301 INFO L85 PathProgramCache]: Analyzing trace with hash 370267531, now seen corresponding path program 1 times [2021-11-06 20:33:37,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:33:37,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396135436] [2021-11-06 20:33:37,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:33:37,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:33:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:33:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:33:37,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:33:37,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396135436] [2021-11-06 20:33:37,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396135436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:33:37,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:33:37,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:33:37,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332739796] [2021-11-06 20:33:37,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:33:37,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:33:37,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:33:37,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:37,791 INFO L87 Difference]: Start difference. First operand 25483 states and 34673 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:33:40,779 INFO L93 Difference]: Finished difference Result 68286 states and 93112 transitions. [2021-11-06 20:33:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:33:40,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 191 [2021-11-06 20:33:40,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:33:40,909 INFO L225 Difference]: With dead ends: 68286 [2021-11-06 20:33:40,910 INFO L226 Difference]: Without dead ends: 43239 [2021-11-06 20:33:40,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43239 states. [2021-11-06 20:33:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43239 to 43017. [2021-11-06 20:33:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43017 states, 42931 states have (on average 1.368638047098833) internal successors, (58757), 43016 states have internal predecessors, (58757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43017 states to 43017 states and 58757 transitions. [2021-11-06 20:33:42,133 INFO L78 Accepts]: Start accepts. Automaton has 43017 states and 58757 transitions. Word has length 191 [2021-11-06 20:33:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:33:42,134 INFO L470 AbstractCegarLoop]: Abstraction has 43017 states and 58757 transitions. [2021-11-06 20:33:42,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 43017 states and 58757 transitions. [2021-11-06 20:33:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-06 20:33:42,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:33:42,139 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:33:42,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:33:42,141 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-06 20:33:42,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:33:42,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1032216416, now seen corresponding path program 1 times [2021-11-06 20:33:42,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:33:42,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345753099] [2021-11-06 20:33:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:33:42,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:33:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:33:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:33:42,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:33:42,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345753099] [2021-11-06 20:33:42,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345753099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:33:42,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:33:42,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:33:42,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377491430] [2021-11-06 20:33:42,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:33:42,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:33:42,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:33:42,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:42,617 INFO L87 Difference]: Start difference. First operand 43017 states and 58757 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:33:46,087 INFO L93 Difference]: Finished difference Result 120085 states and 164326 transitions. [2021-11-06 20:33:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:33:46,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 192 [2021-11-06 20:33:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:33:46,294 INFO L225 Difference]: With dead ends: 120085 [2021-11-06 20:33:46,295 INFO L226 Difference]: Without dead ends: 77504 [2021-11-06 20:33:46,390 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77504 states. [2021-11-06 20:33:48,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77504 to 77278. [2021-11-06 20:33:48,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77278 states, 77192 states have (on average 1.371424499948181) internal successors, (105863), 77277 states have internal predecessors, (105863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77278 states to 77278 states and 105863 transitions. [2021-11-06 20:33:48,529 INFO L78 Accepts]: Start accepts. Automaton has 77278 states and 105863 transitions. Word has length 192 [2021-11-06 20:33:48,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:33:48,530 INFO L470 AbstractCegarLoop]: Abstraction has 77278 states and 105863 transitions. [2021-11-06 20:33:48,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 77278 states and 105863 transitions. [2021-11-06 20:33:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-06 20:33:48,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:33:48,537 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:33:48,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:33:48,538 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-06 20:33:48,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:33:48,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1204297750, now seen corresponding path program 1 times [2021-11-06 20:33:48,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:33:48,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696290654] [2021-11-06 20:33:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:33:48,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:33:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:33:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:33:49,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:33:49,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696290654] [2021-11-06 20:33:49,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696290654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:33:49,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:33:49,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:33:49,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170625393] [2021-11-06 20:33:49,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:33:49,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:33:49,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:33:49,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:49,243 INFO L87 Difference]: Start difference. First operand 77278 states and 105863 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:33:53,958 INFO L93 Difference]: Finished difference Result 219426 states and 301010 transitions. [2021-11-06 20:33:53,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:33:53,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 193 [2021-11-06 20:33:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:33:54,472 INFO L225 Difference]: With dead ends: 219426 [2021-11-06 20:33:54,472 INFO L226 Difference]: Without dead ends: 142584 [2021-11-06 20:33:54,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:54,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142584 states. [2021-11-06 20:33:57,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142584 to 142354. [2021-11-06 20:33:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142354 states, 142268 states have (on average 1.3734430792588637) internal successors, (195397), 142353 states have internal predecessors, (195397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:58,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142354 states to 142354 states and 195397 transitions. [2021-11-06 20:33:58,085 INFO L78 Accepts]: Start accepts. Automaton has 142354 states and 195397 transitions. Word has length 193 [2021-11-06 20:33:58,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:33:58,086 INFO L470 AbstractCegarLoop]: Abstraction has 142354 states and 195397 transitions. [2021-11-06 20:33:58,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:33:58,086 INFO L276 IsEmpty]: Start isEmpty. Operand 142354 states and 195397 transitions. [2021-11-06 20:33:58,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-06 20:33:58,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:33:58,091 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:33:58,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:33:58,091 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-06 20:33:58,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:33:58,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1573645824, now seen corresponding path program 1 times [2021-11-06 20:33:58,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:33:58,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163759205] [2021-11-06 20:33:58,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:33:58,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:33:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:33:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:33:58,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:33:58,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163759205] [2021-11-06 20:33:58,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163759205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:33:58,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:33:58,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:33:58,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35235664] [2021-11-06 20:33:58,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:33:58,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:33:58,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:33:58,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:33:58,909 INFO L87 Difference]: Start difference. First operand 142354 states and 195397 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:34:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:34:05,672 INFO L93 Difference]: Finished difference Result 408199 states and 560978 transitions. [2021-11-06 20:34:05,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:34:05,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 194 [2021-11-06 20:34:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:34:06,408 INFO L225 Difference]: With dead ends: 408199 [2021-11-06 20:34:06,409 INFO L226 Difference]: Without dead ends: 266281 [2021-11-06 20:34:06,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:34:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266281 states. [2021-11-06 20:34:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266281 to 266047. [2021-11-06 20:34:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266047 states, 265961 states have (on average 1.375190347456958) internal successors, (365747), 266046 states have internal predecessors, (365747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:34:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266047 states to 266047 states and 365747 transitions. [2021-11-06 20:34:13,454 INFO L78 Accepts]: Start accepts. Automaton has 266047 states and 365747 transitions. Word has length 194 [2021-11-06 20:34:13,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:34:13,455 INFO L470 AbstractCegarLoop]: Abstraction has 266047 states and 365747 transitions. [2021-11-06 20:34:13,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:34:13,456 INFO L276 IsEmpty]: Start isEmpty. Operand 266047 states and 365747 transitions. [2021-11-06 20:34:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-06 20:34:13,459 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:34:13,459 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:34:13,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 20:34:13,459 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-06 20:34:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:34:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash 524005475, now seen corresponding path program 1 times [2021-11-06 20:34:13,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:34:13,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337625582] [2021-11-06 20:34:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:34:13,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:34:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:34:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:34:13,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:34:13,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337625582] [2021-11-06 20:34:13,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337625582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:34:13,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:34:13,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:34:13,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033971417] [2021-11-06 20:34:13,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:34:13,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:34:13,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:34:13,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:34:13,884 INFO L87 Difference]: Start difference. First operand 266047 states and 365747 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:34:23,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:34:23,814 INFO L93 Difference]: Finished difference Result 630188 states and 865528 transitions. [2021-11-06 20:34:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:34:23,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 205 [2021-11-06 20:34:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:34:25,020 INFO L225 Difference]: With dead ends: 630188 [2021-11-06 20:34:25,020 INFO L226 Difference]: Without dead ends: 364577 [2021-11-06 20:34:25,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:34:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364577 states.