./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.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 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 01:25:41,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:25:41,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:25:41,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:25:41,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:25:41,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:25:41,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:25:42,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:25:42,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:25:42,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:25:42,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:25:42,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:25:42,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:25:42,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:25:42,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:25:42,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:25:42,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:25:42,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:25:42,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:25:42,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:25:42,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:25:42,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:25:42,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:25:42,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:25:42,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:25:42,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:25:42,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:25:42,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:25:42,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:25:42,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:25:42,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:25:42,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:25:42,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:25:42,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:25:42,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:25:42,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:25:42,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:25:42,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:25:42,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:25:42,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:25:42,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:25:42,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 01:25:42,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:25:42,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:25:42,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:25:42,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:25:42,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:25:42,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:25:42,072 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 01:25:42,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:25:42,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:25:42,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:25:42,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:25:42,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:25:42,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:25:42,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:25:42,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:25:42,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:25:42,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:25:42,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 01:25:42,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:25:42,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:25:42,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:25:42,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:25:42,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:25:42,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 01:25:42,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:25:42,075 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 01:25:42,075 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 01:25:42,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:25:42,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:25:42,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 [2021-11-23 01:25:42,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:25:42,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:25:42,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:25:42,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:25:42,278 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:25:42,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-23 01:25:42,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecd75788/21f79f42ba124f6cbd28d28a04c5327b/FLAG1fc673807 [2021-11-23 01:25:42,952 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:25:42,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-23 01:25:42,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecd75788/21f79f42ba124f6cbd28d28a04c5327b/FLAG1fc673807 [2021-11-23 01:25:43,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecd75788/21f79f42ba124f6cbd28d28a04c5327b [2021-11-23 01:25:43,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:25:43,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:25:43,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:25:43,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:25:43,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:25:43,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:25:43" (1/1) ... [2021-11-23 01:25:43,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2fc812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:43, skipping insertion in model container [2021-11-23 01:25:43,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:25:43" (1/1) ... [2021-11-23 01:25:43,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:25:43,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:25:44,491 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2021-11-23 01:25:44,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:25:44,552 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:25:44,775 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2021-11-23 01:25:44,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:25:44,873 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:25:44,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44 WrapperNode [2021-11-23 01:25:44,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:25:44,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:25:44,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:25:44,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:25:44,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (1/1) ... [2021-11-23 01:25:44,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (1/1) ... [2021-11-23 01:25:45,167 INFO L137 Inliner]: procedures = 176, calls = 1181, calls flagged for inlining = 339, calls inlined = 1091, statements flattened = 11508 [2021-11-23 01:25:45,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:25:45,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:25:45,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:25:45,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:25:45,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (1/1) ... [2021-11-23 01:25:45,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (1/1) ... [2021-11-23 01:25:45,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (1/1) ... [2021-11-23 01:25:45,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (1/1) ... [2021-11-23 01:25:45,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (1/1) ... [2021-11-23 01:25:45,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (1/1) ... [2021-11-23 01:25:45,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (1/1) ... [2021-11-23 01:25:45,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:25:45,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:25:45,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:25:45,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:25:45,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (1/1) ... [2021-11-23 01:25:45,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:25:45,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 01:25:45,511 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 01:25:45,517 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 01:25:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:25:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:25:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:25:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:25:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:25:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:25:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:25:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:25:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:25:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:25:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:25:45,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:25:45,965 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:25:45,966 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:25:54,058 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:25:54,073 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:25:54,074 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:25:54,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:25:54 BoogieIcfgContainer [2021-11-23 01:25:54,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:25:54,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:25:54,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:25:54,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:25:54,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:25:43" (1/3) ... [2021-11-23 01:25:54,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ac4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:25:54, skipping insertion in model container [2021-11-23 01:25:54,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:44" (2/3) ... [2021-11-23 01:25:54,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ac4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:25:54, skipping insertion in model container [2021-11-23 01:25:54,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:25:54" (3/3) ... [2021-11-23 01:25:54,083 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-23 01:25:54,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:25:54,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-23 01:25:54,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:25:54,130 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 01:25:54,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-23 01:25:54,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 2177 states, 2168 states have (on average 1.338560885608856) internal successors, (2902), 2176 states have internal predecessors, (2902), 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 01:25:54,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 01:25:54,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:25:54,195 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, 1] [2021-11-23 01:25:54,196 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 01:25:54,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:25:54,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1609577335, now seen corresponding path program 1 times [2021-11-23 01:25:54,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:25:54,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079374100] [2021-11-23 01:25:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:25:54,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:25:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:25:55,036 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 01:25:55,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:25:55,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079374100] [2021-11-23 01:25:55,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079374100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:25:55,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:25:55,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:25:55,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658680687] [2021-11-23 01:25:55,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:25:55,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:25:55,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:25:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:25:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:25:55,074 INFO L87 Difference]: Start difference. First operand has 2177 states, 2168 states have (on average 1.338560885608856) internal successors, (2902), 2176 states have internal predecessors, (2902), 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 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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 01:25:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:25:55,162 INFO L93 Difference]: Finished difference Result 4342 states and 5791 transitions. [2021-11-23 01:25:55,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:25:55,164 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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 78 [2021-11-23 01:25:55,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:25:55,185 INFO L225 Difference]: With dead ends: 4342 [2021-11-23 01:25:55,185 INFO L226 Difference]: Without dead ends: 2140 [2021-11-23 01:25:55,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:25:55,200 INFO L933 BasicCegarLoop]: 2865 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:25:55,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2865 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:25:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-11-23 01:25:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2140. [2021-11-23 01:25:55,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2132 states have (on average 1.3194183864915572) internal successors, (2813), 2139 states have internal predecessors, (2813), 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 01:25:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2813 transitions. [2021-11-23 01:25:55,301 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2813 transitions. Word has length 78 [2021-11-23 01:25:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:25:55,302 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2813 transitions. [2021-11-23 01:25:55,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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 01:25:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2813 transitions. [2021-11-23 01:25:55,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 01:25:55,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:25:55,310 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, 1] [2021-11-23 01:25:55,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:25:55,311 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 01:25:55,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:25:55,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1915674093, now seen corresponding path program 1 times [2021-11-23 01:25:55,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:25:55,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962238951] [2021-11-23 01:25:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:25:55,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:25:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:25:56,054 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 01:25:56,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:25:56,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962238951] [2021-11-23 01:25:56,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962238951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:25:56,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:25:56,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 01:25:56,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365274068] [2021-11-23 01:25:56,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:25:56,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:25:56,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:25:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:25:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:25:56,059 INFO L87 Difference]: Start difference. First operand 2140 states and 2813 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 01:25:58,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:25:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:25:58,467 INFO L93 Difference]: Finished difference Result 7825 states and 10302 transitions. [2021-11-23 01:25:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 01:25:58,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 78 [2021-11-23 01:25:58,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:25:58,487 INFO L225 Difference]: With dead ends: 7825 [2021-11-23 01:25:58,487 INFO L226 Difference]: Without dead ends: 5712 [2021-11-23 01:25:58,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-23 01:25:58,494 INFO L933 BasicCegarLoop]: 2823 mSDtfsCounter, 12086 mSDsluCounter, 7996 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12086 SdHoareTripleChecker+Valid, 10819 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:25:58,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12086 Valid, 10819 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 86 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 01:25:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5712 states. [2021-11-23 01:25:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5712 to 5656. [2021-11-23 01:25:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5656 states, 5648 states have (on average 1.3197592067988668) internal successors, (7454), 5655 states have internal predecessors, (7454), 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 01:25:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5656 states to 5656 states and 7454 transitions. [2021-11-23 01:25:58,720 INFO L78 Accepts]: Start accepts. Automaton has 5656 states and 7454 transitions. Word has length 78 [2021-11-23 01:25:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:25:58,721 INFO L470 AbstractCegarLoop]: Abstraction has 5656 states and 7454 transitions. [2021-11-23 01:25:58,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 01:25:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5656 states and 7454 transitions. [2021-11-23 01:25:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 01:25:58,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:25:58,725 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, 1, 1] [2021-11-23 01:25:58,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:25:58,725 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 01:25:58,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:25:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1852280854, now seen corresponding path program 1 times [2021-11-23 01:25:58,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:25:58,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364343217] [2021-11-23 01:25:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:25:58,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:25:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:25:59,245 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 01:25:59,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:25:59,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364343217] [2021-11-23 01:25:59,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364343217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:25:59,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:25:59,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 01:25:59,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602412912] [2021-11-23 01:25:59,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:25:59,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:25:59,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:25:59,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:25:59,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:25:59,248 INFO L87 Difference]: Start difference. First operand 5656 states and 7454 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 01:26:01,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:26:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:26:01,949 INFO L93 Difference]: Finished difference Result 20594 states and 27137 transitions. [2021-11-23 01:26:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 01:26:01,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 79 [2021-11-23 01:26:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:26:02,002 INFO L225 Difference]: With dead ends: 20594 [2021-11-23 01:26:02,002 INFO L226 Difference]: Without dead ends: 14965 [2021-11-23 01:26:02,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-23 01:26:02,022 INFO L933 BasicCegarLoop]: 2801 mSDtfsCounter, 14877 mSDsluCounter, 5611 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14877 SdHoareTripleChecker+Valid, 8412 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:26:02,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14877 Valid, 8412 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 01:26:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14965 states. [2021-11-23 01:26:02,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14965 to 14862. [2021-11-23 01:26:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14862 states, 14854 states have (on average 1.317961491854046) internal successors, (19577), 14861 states have internal predecessors, (19577), 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 01:26:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14862 states to 14862 states and 19577 transitions. [2021-11-23 01:26:02,549 INFO L78 Accepts]: Start accepts. Automaton has 14862 states and 19577 transitions. Word has length 79 [2021-11-23 01:26:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:26:02,550 INFO L470 AbstractCegarLoop]: Abstraction has 14862 states and 19577 transitions. [2021-11-23 01:26:02,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 01:26:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand 14862 states and 19577 transitions. [2021-11-23 01:26:02,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 01:26:02,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:26:02,556 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, 1, 1, 1] [2021-11-23 01:26:02,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:26:02,557 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 01:26:02,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:26:02,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1352052492, now seen corresponding path program 1 times [2021-11-23 01:26:02,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:26:02,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347772135] [2021-11-23 01:26:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:26:02,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:26:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:26:03,135 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 01:26:03,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:26:03,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347772135] [2021-11-23 01:26:03,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347772135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:26:03,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:26:03,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 01:26:03,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596914549] [2021-11-23 01:26:03,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:26:03,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:26:03,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:26:03,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:26:03,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:26:03,138 INFO L87 Difference]: Start difference. First operand 14862 states and 19577 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 01:26:05,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:26:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:26:06,141 INFO L93 Difference]: Finished difference Result 53522 states and 70425 transitions. [2021-11-23 01:26:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 01:26:06,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 80 [2021-11-23 01:26:06,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:26:06,246 INFO L225 Difference]: With dead ends: 53522 [2021-11-23 01:26:06,246 INFO L226 Difference]: Without dead ends: 38687 [2021-11-23 01:26:06,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-23 01:26:06,280 INFO L933 BasicCegarLoop]: 2800 mSDtfsCounter, 9767 mSDsluCounter, 10291 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9767 SdHoareTripleChecker+Valid, 13091 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:26:06,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9767 Valid, 13091 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 93 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 01:26:06,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38687 states. [2021-11-23 01:26:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38687 to 38460. [2021-11-23 01:26:07,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38460 states, 38452 states have (on average 1.314886091750754) internal successors, (50560), 38459 states have internal predecessors, (50560), 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 01:26:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38460 states to 38460 states and 50560 transitions. [2021-11-23 01:26:07,499 INFO L78 Accepts]: Start accepts. Automaton has 38460 states and 50560 transitions. Word has length 80 [2021-11-23 01:26:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:26:07,500 INFO L470 AbstractCegarLoop]: Abstraction has 38460 states and 50560 transitions. [2021-11-23 01:26:07,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 01:26:07,500 INFO L276 IsEmpty]: Start isEmpty. Operand 38460 states and 50560 transitions. [2021-11-23 01:26:07,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 01:26:07,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:26:07,503 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, 1, 1, 1, 1] [2021-11-23 01:26:07,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:26:07,503 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 01:26:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:26:07,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1252890535, now seen corresponding path program 1 times [2021-11-23 01:26:07,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:26:07,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764117656] [2021-11-23 01:26:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:26:07,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:26:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:26:07,954 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 01:26:07,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:26:07,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764117656] [2021-11-23 01:26:07,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764117656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:26:07,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:26:07,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 01:26:07,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019507153] [2021-11-23 01:26:07,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:26:07,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:26:07,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:26:07,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:26:07,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:26:07,957 INFO L87 Difference]: Start difference. First operand 38460 states and 50560 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 01:26:09,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:26:12,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:26:12,620 INFO L93 Difference]: Finished difference Result 136200 states and 178703 transitions. [2021-11-23 01:26:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 01:26:12,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 81 [2021-11-23 01:26:12,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:26:12,890 INFO L225 Difference]: With dead ends: 136200 [2021-11-23 01:26:12,891 INFO L226 Difference]: Without dead ends: 97767 [2021-11-23 01:26:13,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-23 01:26:13,085 INFO L933 BasicCegarLoop]: 2793 mSDtfsCounter, 14899 mSDsluCounter, 5610 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14899 SdHoareTripleChecker+Valid, 8403 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:26:13,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14899 Valid, 8403 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 01:26:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97767 states. [2021-11-23 01:26:15,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97767 to 97202. [2021-11-23 01:26:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97202 states, 97194 states have (on average 1.3104821285264523) internal successors, (127371), 97201 states have internal predecessors, (127371), 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 01:26:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97202 states to 97202 states and 127371 transitions. [2021-11-23 01:26:16,305 INFO L78 Accepts]: Start accepts. Automaton has 97202 states and 127371 transitions. Word has length 81 [2021-11-23 01:26:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:26:16,305 INFO L470 AbstractCegarLoop]: Abstraction has 97202 states and 127371 transitions. [2021-11-23 01:26:16,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 01:26:16,305 INFO L276 IsEmpty]: Start isEmpty. Operand 97202 states and 127371 transitions. [2021-11-23 01:26:16,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 01:26:16,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:26:16,343 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:26:16,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:26:16,344 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 01:26:16,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:26:16,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1308593718, now seen corresponding path program 1 times [2021-11-23 01:26:16,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:26:16,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550321033] [2021-11-23 01:26:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:26:16,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:26:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:26:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:26:16,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:26:16,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550321033] [2021-11-23 01:26:16,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550321033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:26:16,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:26:16,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:26:16,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147408297] [2021-11-23 01:26:16,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:26:16,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:26:16,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:26:16,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:26:16,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:26:16,781 INFO L87 Difference]: Start difference. First operand 97202 states and 127371 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 01:26:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:26:21,017 INFO L93 Difference]: Finished difference Result 245720 states and 323761 transitions. [2021-11-23 01:26:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:26:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 151 [2021-11-23 01:26:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:26:21,526 INFO L225 Difference]: With dead ends: 245720 [2021-11-23 01:26:21,526 INFO L226 Difference]: Without dead ends: 148545 [2021-11-23 01:26:21,637 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 01:26:21,637 INFO L933 BasicCegarLoop]: 4612 mSDtfsCounter, 2084 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 7305 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:26:21,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2084 Valid, 7305 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:26:21,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148545 states. [2021-11-23 01:26:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148545 to 147071. [2021-11-23 01:26:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147071 states, 147063 states have (on average 1.3228820301503437) internal successors, (194547), 147070 states have internal predecessors, (194547), 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 01:26:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147071 states to 147071 states and 194547 transitions. [2021-11-23 01:26:26,560 INFO L78 Accepts]: Start accepts. Automaton has 147071 states and 194547 transitions. Word has length 151 [2021-11-23 01:26:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:26:26,560 INFO L470 AbstractCegarLoop]: Abstraction has 147071 states and 194547 transitions. [2021-11-23 01:26:26,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 01:26:26,560 INFO L276 IsEmpty]: Start isEmpty. Operand 147071 states and 194547 transitions. [2021-11-23 01:26:26,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-23 01:26:26,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:26:26,605 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:26:26,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:26:26,605 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-23 01:26:26,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:26:26,606 INFO L85 PathProgramCache]: Analyzing trace with hash -537248559, now seen corresponding path program 1 times [2021-11-23 01:26:26,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:26:26,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582162703] [2021-11-23 01:26:26,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:26:26,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:26:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:26:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 01:26:27,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:26:27,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582162703] [2021-11-23 01:26:27,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582162703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:26:27,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:26:27,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:26:27,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119014714] [2021-11-23 01:26:27,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:26:27,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:26:27,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:26:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:26:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:26:27,148 INFO L87 Difference]: Start difference. First operand 147071 states and 194547 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 01:26:34,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:26:34,849 INFO L93 Difference]: Finished difference Result 417102 states and 551833 transitions. [2021-11-23 01:26:34,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:26:34,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 [2021-11-23 01:26:34,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:26:35,684 INFO L225 Difference]: With dead ends: 417102 [2021-11-23 01:26:35,684 INFO L226 Difference]: Without dead ends: 270058 [2021-11-23 01:26:35,873 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 01:26:35,874 INFO L933 BasicCegarLoop]: 5317 mSDtfsCounter, 2583 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2583 SdHoareTripleChecker+Valid, 8084 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:26:35,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2583 Valid, 8084 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:26:36,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270058 states.