./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.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 a50782c14122c4e96fba85550d8baa150b55d4da62dbebbee116fe7764246c85 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:34:37,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:34:37,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:34:37,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:34:37,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:34:37,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:34:37,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:34:37,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:34:37,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:34:37,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:34:37,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:34:37,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:34:37,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:34:37,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:34:37,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:34:37,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:34:37,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:34:37,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:34:37,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:34:37,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:34:37,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:34:37,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:34:37,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:34:37,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:34:37,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:34:37,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:34:37,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:34:37,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:34:37,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:34:37,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:34:37,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:34:37,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:34:37,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:34:37,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:34:37,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:34:37,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:34:37,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:34:37,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:34:37,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:34:37,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:34:37,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:34:37,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:34:38,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:34:38,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:34:38,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:34:38,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:34:38,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:34:38,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:34:38,025 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:34:38,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:34:38,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:34:38,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:34:38,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:34:38,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:34:38,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:34:38,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:34:38,027 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:34:38,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:34:38,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:34:38,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:34:38,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:34:38,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:34:38,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:34:38,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:34:38,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:34:38,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:34:38,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:34:38,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:34:38,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:34:38,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:34:38,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:34:38,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50782c14122c4e96fba85550d8baa150b55d4da62dbebbee116fe7764246c85 [2021-11-05 16:34:38,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:34:38,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:34:38,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:34:38,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:34:38,301 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:34:38,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2021-11-05 16:34:38,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/accac45d1/356ae7fa7e4249a5af1cd15278de8ff7/FLAG9ecc2a17c [2021-11-05 16:34:39,026 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:34:39,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2021-11-05 16:34:39,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/accac45d1/356ae7fa7e4249a5af1cd15278de8ff7/FLAG9ecc2a17c [2021-11-05 16:34:39,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/accac45d1/356ae7fa7e4249a5af1cd15278de8ff7 [2021-11-05 16:34:39,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:34:39,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:34:39,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:34:39,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:34:39,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:34:39,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:34:39" (1/1) ... [2021-11-05 16:34:39,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7d5587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:39, skipping insertion in model container [2021-11-05 16:34:39,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:34:39" (1/1) ... [2021-11-05 16:34:39,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:34:39,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:34:40,226 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i[198904,198917] [2021-11-05 16:34:41,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:34:41,537 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:34:41,644 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i[198904,198917] [2021-11-05 16:34:41,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:34:42,020 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:34:42,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42 WrapperNode [2021-11-05 16:34:42,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:34:42,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:34:42,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:34:42,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:34:42,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (1/1) ... [2021-11-05 16:34:42,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (1/1) ... [2021-11-05 16:34:43,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:34:43,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:34:43,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:34:43,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:34:43,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (1/1) ... [2021-11-05 16:34:43,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (1/1) ... [2021-11-05 16:34:43,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (1/1) ... [2021-11-05 16:34:43,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (1/1) ... [2021-11-05 16:34:44,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (1/1) ... [2021-11-05 16:34:44,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (1/1) ... [2021-11-05 16:34:44,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (1/1) ... [2021-11-05 16:34:44,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:34:44,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:34:44,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:34:44,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:34:44,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (1/1) ... [2021-11-05 16:34:44,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:34:44,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:34:44,607 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) [2021-11-05 16:34:44,626 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 [2021-11-05 16:34:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-05 16:34:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:34:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:34:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:34:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:34:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:34:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:34:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:34:44,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:34:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:34:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:34:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:34:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:34:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:34:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:34:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:47:07,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:47:07,533 INFO L299 CfgBuilder]: Removed 8602 assume(true) statements. [2021-11-05 16:47:07,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:47:07 BoogieIcfgContainer [2021-11-05 16:47:07,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:47:07,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:47:07,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:47:07,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:47:07,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:34:39" (1/3) ... [2021-11-05 16:47:07,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:47:07, skipping insertion in model container [2021-11-05 16:47:07,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:34:42" (2/3) ... [2021-11-05 16:47:07,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:47:07, skipping insertion in model container [2021-11-05 16:47:07,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:47:07" (3/3) ... [2021-11-05 16:47:07,546 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2021-11-05 16:47:07,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:47:07,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-05 16:47:07,598 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:47:07,602 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 [2021-11-05 16:47:07,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-05 16:47:07,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 8263 states, 8261 states have (on average 1.3846991889601743) internal successors, (11439), 8262 states have internal predecessors, (11439), 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) [2021-11-05 16:47:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 16:47:07,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:07,697 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] [2021-11-05 16:47:07,697 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:47:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1561447135, now seen corresponding path program 1 times [2021-11-05 16:47:07,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:07,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091200929] [2021-11-05 16:47:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:07,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:47:08,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:08,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091200929] [2021-11-05 16:47:08,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091200929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:08,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:08,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:08,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772884990] [2021-11-05 16:47:08,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:08,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:08,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:08,878 INFO L87 Difference]: Start difference. First operand has 8263 states, 8261 states have (on average 1.3846991889601743) internal successors, (11439), 8262 states have internal predecessors, (11439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-11-05 16:47:11,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:47:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:11,559 INFO L93 Difference]: Finished difference Result 24675 states and 34163 transitions. [2021-11-05 16:47:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:11,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-11-05 16:47:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:11,629 INFO L225 Difference]: With dead ends: 24675 [2021-11-05 16:47:11,630 INFO L226 Difference]: Without dead ends: 16265 [2021-11-05 16:47:11,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:11,658 INFO L933 BasicCegarLoop]: 11305 mSDtfsCounter, 11173 mSDsluCounter, 11292 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2169.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11173 SdHoareTripleChecker+Valid, 22597 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.49ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2282.90ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:11,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11173 Valid, 22597 Invalid, 15 Unknown, 0 Unchecked, 44.49ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2282.90ms Time] [2021-11-05 16:47:11,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16265 states. [2021-11-05 16:47:12,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16265 to 16265. [2021-11-05 16:47:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16265 states, 16264 states have (on average 1.3639940973930154) internal successors, (22184), 16264 states have internal predecessors, (22184), 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) [2021-11-05 16:47:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16265 states to 16265 states and 22184 transitions. [2021-11-05 16:47:12,080 INFO L78 Accepts]: Start accepts. Automaton has 16265 states and 22184 transitions. Word has length 41 [2021-11-05 16:47:12,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:12,081 INFO L470 AbstractCegarLoop]: Abstraction has 16265 states and 22184 transitions. [2021-11-05 16:47:12,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-11-05 16:47:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 16265 states and 22184 transitions. [2021-11-05 16:47:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-05 16:47:12,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:12,086 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] [2021-11-05 16:47:12,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:47:12,087 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:47:12,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:12,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1614238169, now seen corresponding path program 1 times [2021-11-05 16:47:12,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:12,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802276121] [2021-11-05 16:47:12,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:12,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:47:12,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:12,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802276121] [2021-11-05 16:47:12,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802276121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:12,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:12,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:47:12,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292544249] [2021-11-05 16:47:12,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:12,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:47:12,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:12,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:47:12,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:47:12,952 INFO L87 Difference]: Start difference. First operand 16265 states and 22184 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:47:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:15,209 INFO L93 Difference]: Finished difference Result 32472 states and 44298 transitions. [2021-11-05 16:47:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:47:15,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-05 16:47:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:15,292 INFO L225 Difference]: With dead ends: 32472 [2021-11-05 16:47:15,292 INFO L226 Difference]: Without dead ends: 32466 [2021-11-05 16:47:15,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 123.24ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:47:15,308 INFO L933 BasicCegarLoop]: 11044 mSDtfsCounter, 11113 mSDsluCounter, 33062 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1606.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11113 SdHoareTripleChecker+Valid, 44106 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1749.38ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:15,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11113 Valid, 44106 Invalid, 449 Unknown, 0 Unchecked, 45.54ms Time], IncrementalHoareTripleChecker [1 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 1749.38ms Time] [2021-11-05 16:47:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32466 states. [2021-11-05 16:47:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32466 to 32290. [2021-11-05 16:47:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32290 states, 32289 states have (on average 1.3648920685063024) internal successors, (44071), 32289 states have internal predecessors, (44071), 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) [2021-11-05 16:47:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32290 states to 32290 states and 44071 transitions. [2021-11-05 16:47:15,893 INFO L78 Accepts]: Start accepts. Automaton has 32290 states and 44071 transitions. Word has length 44 [2021-11-05 16:47:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:15,894 INFO L470 AbstractCegarLoop]: Abstraction has 32290 states and 44071 transitions. [2021-11-05 16:47:15,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:47:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 32290 states and 44071 transitions. [2021-11-05 16:47:15,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-05 16:47:15,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:15,925 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:47:15,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:47:15,926 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:47:15,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1037572139, now seen corresponding path program 1 times [2021-11-05 16:47:15,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:15,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365690168] [2021-11-05 16:47:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:15,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:47:16,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:16,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365690168] [2021-11-05 16:47:16,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365690168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:16,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:16,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:16,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756979001] [2021-11-05 16:47:16,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:16,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:16,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:16,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:16,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:16,556 INFO L87 Difference]: Start difference. First operand 32290 states and 44071 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-05 16:47:17,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:17,868 INFO L93 Difference]: Finished difference Result 89496 states and 122129 transitions. [2021-11-05 16:47:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:17,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 144 [2021-11-05 16:47:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:18,000 INFO L225 Difference]: With dead ends: 89496 [2021-11-05 16:47:18,000 INFO L226 Difference]: Without dead ends: 57264 [2021-11-05 16:47:18,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:18,067 INFO L933 BasicCegarLoop]: 11159 mSDtfsCounter, 8645 mSDsluCounter, 11023 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 342.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8645 SdHoareTripleChecker+Valid, 22182 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.30ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 374.35ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:18,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8645 Valid, 22182 Invalid, 65 Unknown, 0 Unchecked, 16.30ms Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 374.35ms Time] [2021-11-05 16:47:18,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57264 states. [2021-11-05 16:47:18,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57264 to 57194. [2021-11-05 16:47:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57194 states, 57193 states have (on average 1.3645551028972076) internal successors, (78043), 57193 states have internal predecessors, (78043), 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) [2021-11-05 16:47:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57194 states to 57194 states and 78043 transitions. [2021-11-05 16:47:19,295 INFO L78 Accepts]: Start accepts. Automaton has 57194 states and 78043 transitions. Word has length 144 [2021-11-05 16:47:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:19,297 INFO L470 AbstractCegarLoop]: Abstraction has 57194 states and 78043 transitions. [2021-11-05 16:47:19,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-05 16:47:19,297 INFO L276 IsEmpty]: Start isEmpty. Operand 57194 states and 78043 transitions. [2021-11-05 16:47:19,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-05 16:47:19,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:19,336 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:47:19,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:47:19,337 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:47:19,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:19,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1678695440, now seen corresponding path program 1 times [2021-11-05 16:47:19,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:19,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538838932] [2021-11-05 16:47:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:19,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:47:19,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:19,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538838932] [2021-11-05 16:47:19,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538838932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:19,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:19,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:19,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690365826] [2021-11-05 16:47:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:19,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:19,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:19,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:19,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:19,847 INFO L87 Difference]: Start difference. First operand 57194 states and 78043 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-05 16:47:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:21,409 INFO L93 Difference]: Finished difference Result 152840 states and 208285 transitions. [2021-11-05 16:47:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:21,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 149 [2021-11-05 16:47:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:21,587 INFO L225 Difference]: With dead ends: 152840 [2021-11-05 16:47:21,588 INFO L226 Difference]: Without dead ends: 95704 [2021-11-05 16:47:21,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:21,678 INFO L933 BasicCegarLoop]: 13658 mSDtfsCounter, 7879 mSDsluCounter, 11029 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 291.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7879 SdHoareTripleChecker+Valid, 24687 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 330.69ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:21,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7879 Valid, 24687 Invalid, 59 Unknown, 0 Unchecked, 15.11ms Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 330.69ms Time] [2021-11-05 16:47:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95704 states. [2021-11-05 16:47:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95704 to 95698. [2021-11-05 16:47:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95698 states, 95697 states have (on average 1.3615787328756388) internal successors, (130299), 95697 states have internal predecessors, (130299), 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) [2021-11-05 16:47:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95698 states to 95698 states and 130299 transitions. [2021-11-05 16:47:23,566 INFO L78 Accepts]: Start accepts. Automaton has 95698 states and 130299 transitions. Word has length 149 [2021-11-05 16:47:23,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:23,566 INFO L470 AbstractCegarLoop]: Abstraction has 95698 states and 130299 transitions. [2021-11-05 16:47:23,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-05 16:47:23,566 INFO L276 IsEmpty]: Start isEmpty. Operand 95698 states and 130299 transitions. [2021-11-05 16:47:23,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-05 16:47:23,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:23,635 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:47:23,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:47:23,635 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:47:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash -811643192, now seen corresponding path program 1 times [2021-11-05 16:47:23,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:23,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155752226] [2021-11-05 16:47:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:23,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:47:24,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:24,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155752226] [2021-11-05 16:47:24,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155752226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:24,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:24,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:24,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955740539] [2021-11-05 16:47:24,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:24,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:24,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:24,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:24,287 INFO L87 Difference]: Start difference. First operand 95698 states and 130299 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-05 16:47:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:27,103 INFO L93 Difference]: Finished difference Result 276540 states and 376371 transitions. [2021-11-05 16:47:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:27,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 149 [2021-11-05 16:47:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:27,451 INFO L225 Difference]: With dead ends: 276540 [2021-11-05 16:47:27,452 INFO L226 Difference]: Without dead ends: 180900 [2021-11-05 16:47:27,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:27,580 INFO L933 BasicCegarLoop]: 16881 mSDtfsCounter, 10235 mSDsluCounter, 11071 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10235 SdHoareTripleChecker+Valid, 27952 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.46ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:27,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10235 Valid, 27952 Invalid, 17 Unknown, 0 Unchecked, 18.16ms Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 167.46ms Time] [2021-11-05 16:47:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180900 states. [2021-11-05 16:47:30,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180900 to 180842. [2021-11-05 16:47:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180842 states, 180841 states have (on average 1.3606372448725677) internal successors, (246059), 180841 states have internal predecessors, (246059), 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) [2021-11-05 16:47:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180842 states to 180842 states and 246059 transitions. [2021-11-05 16:47:31,283 INFO L78 Accepts]: Start accepts. Automaton has 180842 states and 246059 transitions. Word has length 149 [2021-11-05 16:47:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:31,283 INFO L470 AbstractCegarLoop]: Abstraction has 180842 states and 246059 transitions. [2021-11-05 16:47:31,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-05 16:47:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 180842 states and 246059 transitions. [2021-11-05 16:47:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-05 16:47:31,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:31,381 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:47:31,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:47:31,381 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:47:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2107356629, now seen corresponding path program 1 times [2021-11-05 16:47:31,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:31,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781238351] [2021-11-05 16:47:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:31,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:47:32,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:32,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781238351] [2021-11-05 16:47:32,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781238351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:32,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:32,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:32,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770623461] [2021-11-05 16:47:32,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:32,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:32,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:32,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:32,055 INFO L87 Difference]: Start difference. First operand 180842 states and 246059 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-05 16:47:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:37,126 INFO L93 Difference]: Finished difference Result 458490 states and 624709 transitions. [2021-11-05 16:47:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:37,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 161 [2021-11-05 16:47:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:37,714 INFO L225 Difference]: With dead ends: 458490 [2021-11-05 16:47:37,714 INFO L226 Difference]: Without dead ends: 277706 [2021-11-05 16:47:38,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:38,185 INFO L933 BasicCegarLoop]: 11155 mSDtfsCounter, 7577 mSDsluCounter, 10977 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 411.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7577 SdHoareTripleChecker+Valid, 22132 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.18ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 451.19ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:38,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7577 Valid, 22132 Invalid, 106 Unknown, 0 Unchecked, 16.18ms Time], IncrementalHoareTripleChecker [10 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 451.19ms Time] [2021-11-05 16:47:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277706 states. [2021-11-05 16:47:43,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277706 to 271492. [2021-11-05 16:47:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271492 states, 271491 states have (on average 1.3624724208168963) internal successors, (369899), 271491 states have internal predecessors, (369899), 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) [2021-11-05 16:47:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271492 states to 271492 states and 369899 transitions. [2021-11-05 16:47:44,077 INFO L78 Accepts]: Start accepts. Automaton has 271492 states and 369899 transitions. Word has length 161 [2021-11-05 16:47:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:44,077 INFO L470 AbstractCegarLoop]: Abstraction has 271492 states and 369899 transitions. [2021-11-05 16:47:44,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-05 16:47:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 271492 states and 369899 transitions. [2021-11-05 16:47:44,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-05 16:47:44,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:44,137 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:47:44,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:47:44,137 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:47:44,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1004626855, now seen corresponding path program 1 times [2021-11-05 16:47:44,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:44,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986579785] [2021-11-05 16:47:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:44,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:47:45,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:45,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986579785] [2021-11-05 16:47:45,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986579785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:45,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:45,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:45,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048172751] [2021-11-05 16:47:45,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:45,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:45,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:45,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:45,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:45,048 INFO L87 Difference]: Start difference. First operand 271492 states and 369899 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2021-11-05 16:47:47,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []