./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--md--dm-cache.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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--md--dm-cache.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 1742c34f7a214b263d92b02d9484c07ad1ab106a7adf554dae38d13e5f5f8336 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 07:38:49,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 07:38:49,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 07:38:49,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 07:38:49,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 07:38:49,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 07:38:49,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 07:38:49,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 07:38:49,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 07:38:49,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 07:38:49,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 07:38:49,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 07:38:49,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 07:38:49,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 07:38:49,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 07:38:49,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 07:38:49,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 07:38:49,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 07:38:49,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 07:38:49,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 07:38:49,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 07:38:49,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 07:38:49,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 07:38:49,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 07:38:49,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 07:38:49,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 07:38:49,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 07:38:49,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 07:38:49,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 07:38:49,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 07:38:49,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 07:38:49,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 07:38:49,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 07:38:49,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 07:38:49,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 07:38:49,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 07:38:49,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 07:38:49,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 07:38:49,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 07:38:49,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 07:38:49,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 07:38:49,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 07:38:49,407 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 07:38:49,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 07:38:49,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 07:38:49,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 07:38:49,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 07:38:49,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 07:38:49,409 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 07:38:49,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 07:38:49,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 07:38:49,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 07:38:49,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 07:38:49,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 07:38:49,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 07:38:49,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 07:38:49,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 07:38:49,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 07:38:49,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 07:38:49,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 07:38:49,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 07:38:49,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:38:49,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 07:38:49,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 07:38:49,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 07:38:49,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 07:38:49,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 07:38:49,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 07:38:49,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 07:38:49,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 07:38:49,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 07:38:49,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1742c34f7a214b263d92b02d9484c07ad1ab106a7adf554dae38d13e5f5f8336 [2021-11-04 07:38:49,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 07:38:49,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 07:38:49,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 07:38:49,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 07:38:49,670 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 07:38:49,671 INFO L432 ainManager$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--md--dm-cache.ko-entry_point.cil.out.i [2021-11-04 07:38:49,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a242e0e2/9c16975b99cc4af4855666873abb5f0b/FLAG609856e62 [2021-11-04 07:38:50,434 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 07:38:50,434 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--md--dm-cache.ko-entry_point.cil.out.i [2021-11-04 07:38:50,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a242e0e2/9c16975b99cc4af4855666873abb5f0b/FLAG609856e62 [2021-11-04 07:38:50,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a242e0e2/9c16975b99cc4af4855666873abb5f0b [2021-11-04 07:38:50,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 07:38:50,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 07:38:50,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 07:38:50,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 07:38:50,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 07:38:50,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:38:50" (1/1) ... [2021-11-04 07:38:50,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0a16a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:50, skipping insertion in model container [2021-11-04 07:38:50,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:38:50" (1/1) ... [2021-11-04 07:38:50,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 07:38:50,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 07:38:54,171 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--md--dm-cache.ko-entry_point.cil.out.i[374730,374743] [2021-11-04 07:38:54,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:38:54,279 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 07:38:54,596 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--md--dm-cache.ko-entry_point.cil.out.i[374730,374743] [2021-11-04 07:38:54,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:38:54,795 INFO L208 MainTranslator]: Completed translation [2021-11-04 07:38:54,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54 WrapperNode [2021-11-04 07:38:54,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 07:38:54,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 07:38:54,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 07:38:54,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 07:38:54,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (1/1) ... [2021-11-04 07:38:54,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (1/1) ... [2021-11-04 07:38:58,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 07:38:58,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 07:38:58,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 07:38:58,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 07:38:58,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (1/1) ... [2021-11-04 07:38:58,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (1/1) ... [2021-11-04 07:38:59,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (1/1) ... [2021-11-04 07:38:59,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (1/1) ... [2021-11-04 07:39:01,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (1/1) ... [2021-11-04 07:39:01,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (1/1) ... [2021-11-04 07:39:02,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (1/1) ... [2021-11-04 07:39:03,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 07:39:03,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 07:39:03,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 07:39:03,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 07:39:03,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (1/1) ... [2021-11-04 07:39:03,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:39:03,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 07:39:03,218 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) [2021-11-04 07:39:03,221 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 [2021-11-04 07:39:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-04 07:39:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2021-11-04 07:39:03,255 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2021-11-04 07:39:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2021-11-04 07:39:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2021-11-04 07:39:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2021-11-04 07:39:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2021-11-04 07:39:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2021-11-04 07:39:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2021-11-04 07:39:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2021-11-04 07:39:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2021-11-04 07:39:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2021-11-04 07:39:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2021-11-04 07:39:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2021-11-04 07:39:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-04 07:39:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2021-11-04 07:39:03,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2021-11-04 07:39:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 07:39:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 07:39:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 07:39:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2021-11-04 07:39:03,258 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2021-11-04 07:39:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 07:39:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2021-11-04 07:39:03,258 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2021-11-04 07:39:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2021-11-04 07:39:03,259 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2021-11-04 07:39:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2021-11-04 07:39:03,259 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2021-11-04 07:39:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 07:39:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-04 07:39:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2021-11-04 07:39:03,259 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2021-11-04 07:39:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 07:39:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 07:39:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 07:39:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2021-11-04 07:39:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2021-11-04 07:39:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2021-11-04 07:39:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2021-11-04 07:39:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 07:39:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 07:39:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2021-11-04 07:39:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2021-11-04 07:39:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 07:39:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 07:39:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2021-11-04 07:39:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2021-11-04 07:39:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 07:39:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 07:39:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2021-11-04 07:39:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2021-11-04 07:39:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-04 07:39:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-04 07:39:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_32 [2021-11-04 07:39:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_32 [2021-11-04 07:39:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2021-11-04 07:39:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2021-11-04 07:39:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 07:39:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_31 [2021-11-04 07:39:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_31 [2021-11-04 07:39:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2021-11-04 07:39:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2021-11-04 07:39:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2021-11-04 07:39:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2021-11-04 07:39:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2021-11-04 07:39:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2021-11-04 07:39:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2021-11-04 07:39:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 07:39:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2021-11-04 07:39:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2021-11-04 07:39:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2021-11-04 07:39:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2021-11-04 07:39:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2021-11-04 07:39:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2021-11-04 07:39:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-04 07:39:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-04 07:39:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-04 07:39:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2021-11-04 07:39:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2021-11-04 07:39:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2021-11-04 07:39:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2021-11-04 07:39:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2021-11-04 07:39:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2021-11-04 07:39:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2021-11-04 07:39:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2021-11-04 07:39:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 07:39:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-04 07:39:15,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 07:39:15,849 INFO L299 CfgBuilder]: Removed 37520 assume(true) statements. [2021-11-04 07:39:15,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:39:15 BoogieIcfgContainer [2021-11-04 07:39:15,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 07:39:15,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 07:39:15,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 07:39:15,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 07:39:15,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 07:38:50" (1/3) ... [2021-11-04 07:39:15,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa51563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:39:15, skipping insertion in model container [2021-11-04 07:39:15,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:54" (2/3) ... [2021-11-04 07:39:15,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa51563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:39:15, skipping insertion in model container [2021-11-04 07:39:15,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:39:15" (3/3) ... [2021-11-04 07:39:15,874 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2021-11-04 07:39:15,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 07:39:15,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-04 07:39:15,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 07:39:15,976 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 [2021-11-04 07:39:15,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-04 07:39:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 25827 states, 25702 states have (on average 1.2938681814644775) internal successors, (33255), 25728 states have internal predecessors, (33255), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-04 07:39:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-04 07:39:16,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:39:16,271 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] [2021-11-04 07:39:16,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [do_workerErr0ASSERT_VIOLATIONERROR_FUNCTION, do_workerErr1ASSERT_VIOLATIONERROR_FUNCTION, do_workerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:39:16,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:39:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash -240337016, now seen corresponding path program 1 times [2021-11-04 07:39:16,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:39:16,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127992226] [2021-11-04 07:39:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:39:16,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:39:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:39:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:39:16,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:39:16,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127992226] [2021-11-04 07:39:16,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127992226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:39:16,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:39:16,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:39:16,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76336970] [2021-11-04 07:39:16,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:39:16,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 07:39:16,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:39:16,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 07:39:16,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:39:16,879 INFO L87 Difference]: Start difference. First operand has 25827 states, 25702 states have (on average 1.2938681814644775) internal successors, (33255), 25728 states have internal predecessors, (33255), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:39:18,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:39:34,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:40:18,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:40:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:40:48,115 INFO L93 Difference]: Finished difference Result 51650 states and 66915 transitions. [2021-11-04 07:40:48,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 07:40:48,118 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-04 07:40:48,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:40:48,237 INFO L225 Difference]: With dead ends: 51650 [2021-11-04 07:40:48,238 INFO L226 Difference]: Without dead ends: 25204 [2021-11-04 07:40:48,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:40:48,341 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31911 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79379.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 31912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 103.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88837.30ms IncrementalHoareTripleChecker+Time [2021-11-04 07:40:48,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 781 Invalid, 31912 Unknown, 0 Unchecked, 103.43ms Time], IncrementalHoareTripleChecker [0 Valid, 31911 Invalid, 1 Unknown, 0 Unchecked, 88837.30ms Time] [2021-11-04 07:40:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25204 states. [2021-11-04 07:40:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25204 to 25204. [2021-11-04 07:40:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25204 states, 25080 states have (on average 1.2475279106858055) internal successors, (31288), 25105 states have internal predecessors, (31288), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-04 07:40:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25204 states to 25204 states and 31452 transitions. [2021-11-04 07:40:49,045 INFO L78 Accepts]: Start accepts. Automaton has 25204 states and 31452 transitions. Word has length 72 [2021-11-04 07:40:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:40:49,045 INFO L470 AbstractCegarLoop]: Abstraction has 25204 states and 31452 transitions. [2021-11-04 07:40:49,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:40:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 25204 states and 31452 transitions. [2021-11-04 07:40:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-04 07:40:49,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:40:49,052 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] [2021-11-04 07:40:49,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 07:40:49,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [do_workerErr0ASSERT_VIOLATIONERROR_FUNCTION, do_workerErr1ASSERT_VIOLATIONERROR_FUNCTION, do_workerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:40:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:40:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1854862954, now seen corresponding path program 1 times [2021-11-04 07:40:49,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:40:49,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62080182] [2021-11-04 07:40:49,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:40:49,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:40:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:40:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:40:49,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:40:49,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62080182] [2021-11-04 07:40:49,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62080182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:40:49,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:40:49,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:40:49,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420136677] [2021-11-04 07:40:49,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:40:49,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:40:49,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:40:49,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:40:49,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:40:49,587 INFO L87 Difference]: Start difference. First operand 25204 states and 31452 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:40:50,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:40:53,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:41:02,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:41:08,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:41:36,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:41:38,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:43:11,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:43:28,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:43:35,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:43:53,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 07:44:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:44:54,657 INFO L93 Difference]: Finished difference Result 50375 states and 62877 transitions. [2021-11-04 07:44:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:44:54,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-04 07:44:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:44:54,760 INFO L225 Difference]: With dead ends: 50375 [2021-11-04 07:44:54,775 INFO L226 Difference]: Without dead ends: 25211 [2021-11-04 07:44:54,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:44:54,842 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 31410 mSDsCounter, 0 mSdLazyCounter, 62561 mSolverCounterSat, 12 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215516.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 62578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 347.42ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62561 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 241997.23ms IncrementalHoareTripleChecker+Time [2021-11-04 07:44:54,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 62578 Unknown, 0 Unchecked, 347.42ms Time], IncrementalHoareTripleChecker [12 Valid, 62561 Invalid, 5 Unknown, 0 Unchecked, 241997.23ms Time] [2021-11-04 07:44:54,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25211 states. [2021-11-04 07:44:55,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25211 to 25211. [2021-11-04 07:44:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25211 states, 25087 states have (on average 1.247458843225575) internal successors, (31295), 25112 states have internal predecessors, (31295), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-04 07:44:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25211 states to 25211 states and 31459 transitions. [2021-11-04 07:44:55,586 INFO L78 Accepts]: Start accepts. Automaton has 25211 states and 31459 transitions. Word has length 72 [2021-11-04 07:44:55,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:44:55,587 INFO L470 AbstractCegarLoop]: Abstraction has 25211 states and 31459 transitions. [2021-11-04 07:44:55,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:44:55,587 INFO L276 IsEmpty]: Start isEmpty. Operand 25211 states and 31459 transitions. [2021-11-04 07:44:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-04 07:44:55,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:44:55,590 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] [2021-11-04 07:44:55,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 07:44:55,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [do_workerErr0ASSERT_VIOLATIONERROR_FUNCTION, do_workerErr1ASSERT_VIOLATIONERROR_FUNCTION, do_workerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:44:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:44:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash -559303444, now seen corresponding path program 1 times [2021-11-04 07:44:55,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:44:55,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256216228] [2021-11-04 07:44:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:44:55,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:44:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:44:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 07:44:55,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:44:55,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256216228] [2021-11-04 07:44:55,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256216228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:44:55,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:44:55,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:44:55,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122829841] [2021-11-04 07:44:55,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:44:55,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:44:55,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:44:55,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:44:55,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:44:55,877 INFO L87 Difference]: Start difference. First operand 25211 states and 31459 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2021-11-04 07:44:57,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:44:58,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:45:07,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:45:13,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:45:41,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:45:42,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:47:02,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:47:31,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:47:37,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:47:42,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:47:50,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:47:56,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:47:58,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:48:03,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:49:18,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:49:18,267 INFO L93 Difference]: Finished difference Result 50369 states and 62863 transitions. [2021-11-04 07:49:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:49:18,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 [2021-11-04 07:49:18,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:49:18,363 INFO L225 Difference]: With dead ends: 50369 [2021-11-04 07:49:18,363 INFO L226 Difference]: Without dead ends: 25214 [2021-11-04 07:49:18,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:49:18,411 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 31413 mSDsCounter, 0 mSdLazyCounter, 62571 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 222427.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 62577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 315.77ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62571 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259519.02ms IncrementalHoareTripleChecker+Time [2021-11-04 07:49:18,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 62577 Unknown, 0 Unchecked, 315.77ms Time], IncrementalHoareTripleChecker [4 Valid, 62571 Invalid, 2 Unknown, 0 Unchecked, 259519.02ms Time] [2021-11-04 07:49:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25214 states. [2021-11-04 07:49:18,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25214 to 25214. [2021-11-04 07:49:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25214 states, 25090 states have (on average 1.2474292546831407) internal successors, (31298), 25115 states have internal predecessors, (31298), 82 states have call successors, (82), 33 states have call predecessors, (82), 33 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-04 07:49:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25214 states to 25214 states and 31462 transitions. [2021-11-04 07:49:18,985 INFO L78 Accepts]: Start accepts. Automaton has 25214 states and 31462 transitions. Word has length 79 [2021-11-04 07:49:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:49:18,985 INFO L470 AbstractCegarLoop]: Abstraction has 25214 states and 31462 transitions. [2021-11-04 07:49:18,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2021-11-04 07:49:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 25214 states and 31462 transitions. [2021-11-04 07:49:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-04 07:49:18,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:49:18,986 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] [2021-11-04 07:49:18,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 07:49:18,987 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [do_workerErr0ASSERT_VIOLATIONERROR_FUNCTION, do_workerErr1ASSERT_VIOLATIONERROR_FUNCTION, do_workerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:49:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:49:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1995067038, now seen corresponding path program 1 times [2021-11-04 07:49:18,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:49:18,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719034228] [2021-11-04 07:49:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:49:18,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:49:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:49:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 07:49:19,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:49:19,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719034228] [2021-11-04 07:49:19,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719034228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:49:19,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:49:19,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:49:19,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464308857] [2021-11-04 07:49:19,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:49:19,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:49:19,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:49:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:49:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:49:19,206 INFO L87 Difference]: Start difference. First operand 25214 states and 31462 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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) [2021-11-04 07:49:21,321 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 [] [2021-11-04 07:49:38,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:50:12,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:51:12,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:51:18,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:52:11,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:52:17,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:52:35,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:52:40,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15