./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-neterion-vxge-vxge.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-drivers-clk1_drivers-net-ethernet-neterion-vxge-vxge.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 a1208dc5d393e35967d851ea84e7bb1922b0e5b72437f512029f61e94a1027ea --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 03:45:35,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:45:35,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:45:35,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:45:35,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:45:35,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:45:35,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:45:35,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:45:35,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:45:35,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:45:35,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:45:35,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:45:35,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:45:35,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:45:35,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:45:35,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:45:35,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:45:35,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:45:35,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:45:35,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:45:35,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:45:35,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:45:35,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:45:35,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:45:35,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:45:35,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:45:35,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:45:35,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:45:35,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:45:35,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:45:35,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:45:35,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:45:35,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:45:35,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:45:35,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:45:35,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:45:35,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:45:35,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:45:35,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:45:35,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:45:35,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:45:35,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 03:45:36,024 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:45:36,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:45:36,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:45:36,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:45:36,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:45:36,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:45:36,027 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 03:45:36,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:45:36,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:45:36,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:45:36,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:45:36,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:45:36,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:45:36,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:45:36,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:45:36,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:45:36,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:45:36,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:45:36,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:45:36,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:45:36,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:45:36,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:45:36,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:45:36,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 03:45:36,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:45:36,030 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 03:45:36,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 03:45:36,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:45:36,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:45:36,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1208dc5d393e35967d851ea84e7bb1922b0e5b72437f512029f61e94a1027ea [2021-11-23 03:45:36,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:45:36,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:45:36,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:45:36,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:45:36,253 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:45:36,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-neterion-vxge-vxge.cil.i [2021-11-23 03:45:36,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6393daeee/f987092945df46278847e7ef8a2c0f59/FLAG65a928366 [2021-11-23 03:45:37,060 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:45:37,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-neterion-vxge-vxge.cil.i [2021-11-23 03:45:37,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6393daeee/f987092945df46278847e7ef8a2c0f59/FLAG65a928366 [2021-11-23 03:45:37,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6393daeee/f987092945df46278847e7ef8a2c0f59 [2021-11-23 03:45:37,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:45:37,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:45:37,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:45:37,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:45:37,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:45:37,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:37" (1/1) ... [2021-11-23 03:45:37,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2baacda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:37, skipping insertion in model container [2021-11-23 03:45:37,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:37" (1/1) ... [2021-11-23 03:45:37,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:45:37,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:45:44,235 WARN L230 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-drivers-clk1_drivers-net-ethernet-neterion-vxge-vxge.cil.i[826194,826207] [2021-11-23 03:45:44,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:45:44,313 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:45:44,897 WARN L230 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-drivers-clk1_drivers-net-ethernet-neterion-vxge-vxge.cil.i[826194,826207] [2021-11-23 03:45:44,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:45:45,142 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:45:45,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45 WrapperNode [2021-11-23 03:45:45,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:45:45,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:45:45,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:45:45,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:45:45,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (1/1) ... [2021-11-23 03:45:45,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (1/1) ... [2021-11-23 03:45:47,669 INFO L137 Inliner]: procedures = 713, calls = 7575, calls flagged for inlining = 1769, calls inlined = 12405, statements flattened = 151659 [2021-11-23 03:45:47,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:45:47,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:45:47,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:45:47,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:45:47,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (1/1) ... [2021-11-23 03:45:47,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (1/1) ... [2021-11-23 03:45:48,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (1/1) ... [2021-11-23 03:45:48,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (1/1) ... [2021-11-23 03:45:50,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (1/1) ... [2021-11-23 03:45:50,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (1/1) ... [2021-11-23 03:45:50,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (1/1) ... [2021-11-23 03:45:51,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:45:51,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:45:51,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:45:51,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:45:51,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (1/1) ... [2021-11-23 03:45:51,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:45:51,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 03:45:51,226 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) [2021-11-23 03:45:51,243 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 [2021-11-23 03:45:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure vxge_close [2021-11-23 03:45:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure vxge_close [2021-11-23 03:45:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure __vxge_hw_vpath_sw_reset [2021-11-23 03:45:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __vxge_hw_vpath_sw_reset [2021-11-23 03:45:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure vxge_open_vpaths [2021-11-23 03:45:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vxge_open_vpaths [2021-11-23 03:45:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure vxge_device_unregister [2021-11-23 03:45:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vxge_device_unregister [2021-11-23 03:45:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure vxge_device_register [2021-11-23 03:45:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure vxge_device_register [2021-11-23 03:45:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_13_6 [2021-11-23 03:45:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_13_6 [2021-11-23 03:45:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_22 [2021-11-23 03:45:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_22 [2021-11-23 03:45:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:45:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:45:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-23 03:45:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-23 03:45:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure vxge_probe [2021-11-23 03:45:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure vxge_probe [2021-11-23 03:45:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:45:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:45:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure vxge_reset_all_vpaths [2021-11-23 03:45:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure vxge_reset_all_vpaths [2021-11-23 03:45:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:45:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-23 03:45:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-23 03:45:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:45:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:45:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:45:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:45:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:45:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure __vxge_hw_ring_create [2021-11-23 03:45:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __vxge_hw_ring_create [2021-11-23 03:45:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:45:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:45:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_20 [2021-11-23 03:45:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_20 [2021-11-23 03:45:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 03:45:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure do_vxge_close [2021-11-23 03:45:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure do_vxge_close [2021-11-23 03:45:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:45:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:45:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:45:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure vxge_hw_vpath_open [2021-11-23 03:45:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure vxge_hw_vpath_open [2021-11-23 03:45:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure vxge_hw_ring_replenish [2021-11-23 03:45:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure vxge_hw_ring_replenish [2021-11-23 03:45:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:45:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure vxge_hw_vpath_recover_from_reset [2021-11-23 03:45:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure vxge_hw_vpath_recover_from_reset [2021-11-23 03:45:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure vxge_open [2021-11-23 03:45:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure vxge_open [2021-11-23 03:45:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_stop_18_2 [2021-11-23 03:45:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_stop_18_2 [2021-11-23 03:45:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure __vxge_hw_ring_reset [2021-11-23 03:45:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __vxge_hw_ring_reset [2021-11-23 03:45:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:45:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:45:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:45:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 03:45:53,886 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:45:53,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:52:16,455 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-23 03:52:16,456 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res#1 := 0; [2021-11-23 03:52:16,456 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-23 03:52:16,456 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#1: ldv_switch_2_#res#1 := 0; [2021-11-23 03:52:16,457 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-23 03:52:16,457 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-23 03:52:16,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:52:28,271 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:52:28,343 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:52:28,343 INFO L301 CfgBuilder]: Removed 252 assume(true) statements. [2021-11-23 03:52:28,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:28 BoogieIcfgContainer [2021-11-23 03:52:28,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:52:28,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:52:28,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:52:28,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:52:28,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:45:37" (1/3) ... [2021-11-23 03:52:28,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b26a57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:52:28, skipping insertion in model container [2021-11-23 03:52:28,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:45" (2/3) ... [2021-11-23 03:52:28,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b26a57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:52:28, skipping insertion in model container [2021-11-23 03:52:28,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:28" (3/3) ... [2021-11-23 03:52:28,371 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-neterion-vxge-vxge.cil.i [2021-11-23 03:52:28,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:52:28,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 03:52:28,575 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:52:28,583 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 [2021-11-23 03:52:28,584 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 03:52:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 26710 states, 26632 states have (on average 1.3216806848903575) internal successors, (35199), 26634 states have internal predecessors, (35199), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-23 03:52:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 03:52:28,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:28,913 INFO L514 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] [2021-11-23 03:52:28,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:28,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:28,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1548911506, now seen corresponding path program 1 times [2021-11-23 03:52:28,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:52:28,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630840490] [2021-11-23 03:52:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:28,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:30,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:52:30,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630840490] [2021-11-23 03:52:30,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630840490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:30,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:30,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:52:30,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727982155] [2021-11-23 03:52:30,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:30,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:30,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:52:30,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:30,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:30,089 INFO L87 Difference]: Start difference. First operand has 26710 states, 26632 states have (on average 1.3216806848903575) internal successors, (35199), 26634 states have internal predecessors, (35199), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-11-23 03:52:32,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:52:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:34,121 INFO L93 Difference]: Finished difference Result 77603 states and 102724 transitions. [2021-11-23 03:52:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:34,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2021-11-23 03:52:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:34,375 INFO L225 Difference]: With dead ends: 77603 [2021-11-23 03:52:34,377 INFO L226 Difference]: Without dead ends: 50370 [2021-11-23 03:52:34,630 INFO L932 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 [2021-11-23 03:52:34,632 INFO L933 BasicCegarLoop]: 33570 mSDtfsCounter, 33173 mSDsluCounter, 33405 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33173 SdHoareTripleChecker+Valid, 66975 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:34,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33173 Valid, 66975 Invalid, 34 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 03:52:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50370 states. [2021-11-23 03:52:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50370 to 50370. [2021-11-23 03:52:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50370 states, 50217 states have (on average 1.2943226397435132) internal successors, (64997), 50219 states have internal predecessors, (64997), 108 states have call successors, (108), 42 states have call predecessors, (108), 42 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-23 03:52:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50370 states to 50370 states and 65213 transitions. [2021-11-23 03:52:35,913 INFO L78 Accepts]: Start accepts. Automaton has 50370 states and 65213 transitions. Word has length 77 [2021-11-23 03:52:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:35,919 INFO L470 AbstractCegarLoop]: Abstraction has 50370 states and 65213 transitions. [2021-11-23 03:52:35,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-11-23 03:52:35,921 INFO L276 IsEmpty]: Start isEmpty. Operand 50370 states and 65213 transitions. [2021-11-23 03:52:35,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 03:52:35,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:35,937 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:35,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:52:35,937 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:35,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:35,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1042098463, now seen corresponding path program 1 times [2021-11-23 03:52:35,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:52:35,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393277247] [2021-11-23 03:52:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:35,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:36,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:52:36,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393277247] [2021-11-23 03:52:36,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393277247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:36,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:36,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:52:36,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146200798] [2021-11-23 03:52:36,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:36,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:36,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:52:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:36,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:36,651 INFO L87 Difference]: Start difference. First operand 50370 states and 65213 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-11-23 03:52:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:38,103 INFO L93 Difference]: Finished difference Result 90494 states and 117259 transitions. [2021-11-23 03:52:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:38,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2021-11-23 03:52:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:38,350 INFO L225 Difference]: With dead ends: 90494 [2021-11-23 03:52:38,351 INFO L226 Difference]: Without dead ends: 65329 [2021-11-23 03:52:38,439 INFO L932 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 [2021-11-23 03:52:38,440 INFO L933 BasicCegarLoop]: 52074 mSDtfsCounter, 19381 mSDsluCounter, 32776 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19413 SdHoareTripleChecker+Valid, 84850 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:38,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19413 Valid, 84850 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:52:38,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65329 states. [2021-11-23 03:52:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65329 to 50384. [2021-11-23 03:52:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50384 states, 50231 states have (on average 1.2943799645637157) internal successors, (65018), 50233 states have internal predecessors, (65018), 108 states have call successors, (108), 42 states have call predecessors, (108), 42 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-23 03:52:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50384 states to 50384 states and 65234 transitions. [2021-11-23 03:52:39,949 INFO L78 Accepts]: Start accepts. Automaton has 50384 states and 65234 transitions. Word has length 114 [2021-11-23 03:52:39,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:39,950 INFO L470 AbstractCegarLoop]: Abstraction has 50384 states and 65234 transitions. [2021-11-23 03:52:39,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-11-23 03:52:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 50384 states and 65234 transitions. [2021-11-23 03:52:39,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 03:52:39,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:39,961 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:39,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:52:39,962 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:39,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:39,962 INFO L85 PathProgramCache]: Analyzing trace with hash 527186014, now seen corresponding path program 1 times [2021-11-23 03:52:39,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:52:39,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699889231] [2021-11-23 03:52:39,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:39,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:40,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:52:40,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699889231] [2021-11-23 03:52:40,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699889231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:40,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:40,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:52:40,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045614247] [2021-11-23 03:52:40,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:40,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:40,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:52:40,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:40,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:40,528 INFO L87 Difference]: Start difference. First operand 50384 states and 65234 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-11-23 03:52:41,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:41,633 INFO L93 Difference]: Finished difference Result 90510 states and 117280 transitions. [2021-11-23 03:52:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:41,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 116 [2021-11-23 03:52:41,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:41,961 INFO L225 Difference]: With dead ends: 90510 [2021-11-23 03:52:41,962 INFO L226 Difference]: Without dead ends: 65331 [2021-11-23 03:52:42,021 INFO L932 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 [2021-11-23 03:52:42,025 INFO L933 BasicCegarLoop]: 52082 mSDtfsCounter, 19366 mSDsluCounter, 32784 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19398 SdHoareTripleChecker+Valid, 84866 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:42,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19398 Valid, 84866 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:52:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65331 states. [2021-11-23 03:52:42,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65331 to 50383. [2021-11-23 03:52:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50383 states, 50230 states have (on average 1.2943260999402748) internal successors, (65014), 50232 states have internal predecessors, (65014), 108 states have call successors, (108), 42 states have call predecessors, (108), 42 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-23 03:52:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50383 states to 50383 states and 65230 transitions. [2021-11-23 03:52:43,038 INFO L78 Accepts]: Start accepts. Automaton has 50383 states and 65230 transitions. Word has length 116 [2021-11-23 03:52:43,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:43,039 INFO L470 AbstractCegarLoop]: Abstraction has 50383 states and 65230 transitions. [2021-11-23 03:52:43,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-11-23 03:52:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 50383 states and 65230 transitions. [2021-11-23 03:52:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 03:52:43,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:43,055 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:43,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:52:43,056 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:43,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:43,056 INFO L85 PathProgramCache]: Analyzing trace with hash -734554988, now seen corresponding path program 1 times [2021-11-23 03:52:43,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:52:43,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541889724] [2021-11-23 03:52:43,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:43,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:43,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:52:43,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541889724] [2021-11-23 03:52:43,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541889724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:43,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:43,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:52:43,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679722594] [2021-11-23 03:52:43,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:43,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:43,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:52:43,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:43,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:43,864 INFO L87 Difference]: Start difference. First operand 50383 states and 65230 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-23 03:52:44,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:44,763 INFO L93 Difference]: Finished difference Result 75563 states and 97840 transitions. [2021-11-23 03:52:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:44,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 [2021-11-23 03:52:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:44,910 INFO L225 Difference]: With dead ends: 75563 [2021-11-23 03:52:44,911 INFO L226 Difference]: Without dead ends: 50385 [2021-11-23 03:52:44,980 INFO L932 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 [2021-11-23 03:52:44,981 INFO L933 BasicCegarLoop]: 32764 mSDtfsCounter, 1 mSDsluCounter, 32744 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65508 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:44,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 65508 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:52:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50385 states. [2021-11-23 03:52:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50385 to 50384. [2021-11-23 03:52:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50384 states, 50231 states have (on average 1.2943202404889411) internal successors, (65015), 50233 states have internal predecessors, (65015), 108 states have call successors, (108), 42 states have call predecessors, (108), 42 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-23 03:52:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50384 states to 50384 states and 65231 transitions. [2021-11-23 03:52:46,120 INFO L78 Accepts]: Start accepts. Automaton has 50384 states and 65231 transitions. Word has length 117 [2021-11-23 03:52:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:46,121 INFO L470 AbstractCegarLoop]: Abstraction has 50384 states and 65231 transitions. [2021-11-23 03:52:46,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-23 03:52:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 50384 states and 65231 transitions. [2021-11-23 03:52:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 03:52:46,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:46,133 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:46,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:52:46,133 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:46,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:46,134 INFO L85 PathProgramCache]: Analyzing trace with hash -696753320, now seen corresponding path program 1 times [2021-11-23 03:52:46,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:52:46,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363015308] [2021-11-23 03:52:46,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:46,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:46,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:52:46,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363015308] [2021-11-23 03:52:46,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363015308] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:52:46,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147338595] [2021-11-23 03:52:46,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:46,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:52:46,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 03:52:46,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:52:46,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:52:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:50,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 7103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:52:50,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:52:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:50,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:52:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:51,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147338595] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:52:51,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:52:51,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 03:52:51,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707953961] [2021-11-23 03:52:51,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:52:51,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:52:51,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:52:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:52:51,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:52:51,124 INFO L87 Difference]: Start difference. First operand 50384 states and 65231 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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)