./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-08_1a-drivers--misc--vmw_vmci--vmw_vmci.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-08_1a-drivers--misc--vmw_vmci--vmw_vmci.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 2f2e3ba5529f0133c9ca2108251e26b42feae481ae8353f2901085168a9ce059 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 06:03:54,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 06:03:54,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 06:03:54,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 06:03:54,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 06:03:54,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 06:03:54,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 06:03:54,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 06:03:54,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 06:03:54,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 06:03:54,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 06:03:54,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 06:03:54,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 06:03:54,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 06:03:54,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 06:03:54,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 06:03:54,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 06:03:54,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 06:03:54,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 06:03:54,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 06:03:54,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 06:03:54,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 06:03:54,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 06:03:54,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 06:03:54,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 06:03:54,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 06:03:54,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 06:03:54,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 06:03:54,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 06:03:54,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 06:03:54,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 06:03:54,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 06:03:54,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 06:03:54,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 06:03:54,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 06:03:54,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 06:03:54,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 06:03:54,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 06:03:54,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 06:03:54,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 06:03:54,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 06:03:54,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 06:03:54,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 06:03:54,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 06:03:54,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 06:03:54,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 06:03:54,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 06:03:54,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 06:03:54,302 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 06:03:54,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 06:03:54,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 06:03:54,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 06:03:54,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 06:03:54,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 06:03:54,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 06:03:54,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 06:03:54,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 06:03:54,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 06:03:54,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 06:03:54,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 06:03:54,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 06:03:54,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:03:54,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 06:03:54,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 06:03:54,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 06:03:54,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 06:03:54,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 06:03:54,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 06:03:54,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 06:03:54,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 06:03:54,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 06:03:54,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f2e3ba5529f0133c9ca2108251e26b42feae481ae8353f2901085168a9ce059 [2021-11-04 06:03:54,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 06:03:54,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 06:03:54,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 06:03:54,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 06:03:54,504 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 06:03:54,505 INFO L432 ainManager$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-08_1a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-04 06:03:54,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2cf2d63/f8042352046544cdb7d4349c3e0f6733/FLAG8d6b693bf [2021-11-04 06:03:55,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 06:03:55,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-04 06:03:55,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2cf2d63/f8042352046544cdb7d4349c3e0f6733/FLAG8d6b693bf [2021-11-04 06:03:55,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2cf2d63/f8042352046544cdb7d4349c3e0f6733 [2021-11-04 06:03:55,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 06:03:55,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 06:03:55,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 06:03:55,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 06:03:55,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 06:03:55,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:03:55" (1/1) ... [2021-11-04 06:03:55,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7c2d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:55, skipping insertion in model container [2021-11-04 06:03:55,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:03:55" (1/1) ... [2021-11-04 06:03:55,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 06:03:55,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 06:03:58,286 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-08_1a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[469146,469159] [2021-11-04 06:03:58,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:03:58,420 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 06:03:58,692 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-08_1a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[469146,469159] [2021-11-04 06:03:58,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:03:58,832 INFO L208 MainTranslator]: Completed translation [2021-11-04 06:03:58,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58 WrapperNode [2021-11-04 06:03:58,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 06:03:58,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 06:03:58,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 06:03:58,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 06:03:58,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (1/1) ... [2021-11-04 06:03:58,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (1/1) ... [2021-11-04 06:04:00,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 06:04:00,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 06:04:00,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 06:04:00,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 06:04:00,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (1/1) ... [2021-11-04 06:04:00,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (1/1) ... [2021-11-04 06:04:00,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (1/1) ... [2021-11-04 06:04:00,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (1/1) ... [2021-11-04 06:04:01,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (1/1) ... [2021-11-04 06:04:01,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (1/1) ... [2021-11-04 06:04:01,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (1/1) ... [2021-11-04 06:04:02,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 06:04:02,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 06:04:02,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 06:04:02,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 06:04:02,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (1/1) ... [2021-11-04 06:04:02,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:04:02,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:04:02,069 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 06:04:02,095 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 06:04:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_send [2021-11-04 06:04:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_send [2021-11-04 06:04:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_put [2021-11-04 06:04:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_put [2021-11-04 06:04:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_destroy [2021-11-04 06:04:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_destroy [2021-11-04 06:04:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure dbell_delayed_dispatch [2021-11-04 06:04:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure dbell_delayed_dispatch [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure dg_delayed_dispatch [2021-11-04 06:04:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_delayed_dispatch [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_host [2021-11-04 06:04:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_host [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_dispatch [2021-11-04 06:04:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_dispatch [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer [2021-11-04 06:04:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-04 06:04:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-04 06:04:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_fire_notification [2021-11-04 06:04:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_fire_notification [2021-11-04 06:04:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 06:04:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_close [2021-11-04 06:04:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_close [2021-11-04 06:04:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 06:04:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 06:04:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_free_ctx [2021-11-04 06:04:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_free_ctx [2021-11-04 06:04:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 06:04:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 06:04:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-04 06:04:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-04 06:04:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_guest_work [2021-11-04 06:04:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_guest_work [2021-11-04 06:04:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 06:04:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 06:04:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-04 06:04:02,140 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-04 06:04:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 06:04:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 06:04:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_detach [2021-11-04 06:04:02,140 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_detach [2021-11-04 06:04:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_enqueue_datagram [2021-11-04 06:04:02,140 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_enqueue_datagram [2021-11-04 06:04:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub___0 [2021-11-04 06:04:02,140 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub___0 [2021-11-04 06:04:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qpair_detach [2021-11-04 06:04:02,140 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qpair_detach [2021-11-04 06:04:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 06:04:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 06:04:02,140 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_host_work [2021-11-04 06:04:02,141 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_host_work [2021-11-04 06:04:02,141 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_endpoint_destroy [2021-11-04 06:04:02,141 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_endpoint_destroy [2021-11-04 06:04:02,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 06:04:02,141 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_guest [2021-11-04 06:04:02,142 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_guest [2021-11-04 06:04:02,142 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put___0 [2021-11-04 06:04:02,142 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put___0 [2021-11-04 06:04:02,142 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_get_priv_flags [2021-11-04 06:04:02,142 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_get_priv_flags [2021-11-04 06:04:02,142 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_remove [2021-11-04 06:04:02,142 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_remove [2021-11-04 06:04:02,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 06:04:02,142 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_context_get_priv_flags [2021-11-04 06:04:02,143 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_context_get_priv_flags [2021-11-04 06:04:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_guest_endpoints_exit [2021-11-04 06:04:02,143 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_guest_endpoints_exit [2021-11-04 06:04:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch [2021-11-04 06:04:02,143 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch [2021-11-04 06:04:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_remove_device [2021-11-04 06:04:02,143 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_remove_device [2021-11-04 06:04:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 06:04:02,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 06:04:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 06:04:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_put [2021-11-04 06:04:02,144 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_put [2021-11-04 06:04:21,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 06:04:21,216 INFO L299 CfgBuilder]: Removed 8615 assume(true) statements. [2021-11-04 06:04:21,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:04:21 BoogieIcfgContainer [2021-11-04 06:04:21,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 06:04:21,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 06:04:21,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 06:04:21,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 06:04:21,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 06:03:55" (1/3) ... [2021-11-04 06:04:21,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed8707b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:04:21, skipping insertion in model container [2021-11-04 06:04:21,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:03:58" (2/3) ... [2021-11-04 06:04:21,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed8707b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:04:21, skipping insertion in model container [2021-11-04 06:04:21,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:04:21" (3/3) ... [2021-11-04 06:04:21,233 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-04 06:04:21,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 06:04:21,237 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-04 06:04:21,295 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 06:04:21,299 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 06:04:21,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-04 06:04:21,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 10422 states, 10282 states have (on average 1.5064189846333398) internal successors, (15489), 10289 states have internal predecessors, (15489), 106 states have call successors, (106), 32 states have call predecessors, (106), 32 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2021-11-04 06:04:21,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-04 06:04:21,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:04:21,395 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] [2021-11-04 06:04:21,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 06:04:21,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:04:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash -17163198, now seen corresponding path program 1 times [2021-11-04 06:04:21,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:04:21,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051489889] [2021-11-04 06:04:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:04:21,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:04:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:04:22,104 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 06:04:22,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:04:22,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051489889] [2021-11-04 06:04:22,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051489889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:04:22,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:04:22,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:04:22,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908453123] [2021-11-04 06:04:22,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:04:22,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:04:22,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:04:22,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:04:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:04:22,161 INFO L87 Difference]: Start difference. First operand has 10422 states, 10282 states have (on average 1.5064189846333398) internal successors, (15489), 10289 states have internal predecessors, (15489), 106 states have call successors, (106), 32 states have call predecessors, (106), 32 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 06:04:24,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:04:35,526 WARN L515 Checker$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 06:04:39,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 06:05:23,538 WARN L515 Checker$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 06:05:36,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:05:51,357 WARN L515 Checker$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 06:06:07,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:06:29,144 WARN L515 Checker$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 06:06:41,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:07:00,415 WARN L515 Checker$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 06:07:49,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:08:10,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:08:21,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:08:21,384 INFO L93 Difference]: Finished difference Result 30676 states and 46458 transitions. [2021-11-04 06:08:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:08:21,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-04 06:08:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:08:21,500 INFO L225 Difference]: With dead ends: 30676 [2021-11-04 06:08:21,501 INFO L226 Difference]: Without dead ends: 20248 [2021-11-04 06:08:21,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:08:21,540 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 14996 mSDsluCounter, 15216 mSDsCounter, 0 mSdLazyCounter, 30322 mSolverCounterSat, 3 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 221791.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14998 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 30334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 244.13ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30322 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 236071.01ms IncrementalHoareTripleChecker+Time [2021-11-04 06:08:21,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14998 Valid, 534 Invalid, 30334 Unknown, 0 Unchecked, 244.13ms Time], IncrementalHoareTripleChecker [3 Valid, 30322 Invalid, 9 Unknown, 0 Unchecked, 236071.01ms Time] [2021-11-04 06:08:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20248 states. [2021-11-04 06:08:21,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20248 to 20238. [2021-11-04 06:08:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20238 states, 19963 states have (on average 1.4920603115764164) internal successors, (29786), 19975 states have internal predecessors, (29786), 210 states have call successors, (210), 64 states have call predecessors, (210), 64 states have return successors, (212), 204 states have call predecessors, (212), 210 states have call successors, (212) [2021-11-04 06:08:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20238 states to 20238 states and 30208 transitions. [2021-11-04 06:08:22,082 INFO L78 Accepts]: Start accepts. Automaton has 20238 states and 30208 transitions. Word has length 24 [2021-11-04 06:08:22,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:08:22,083 INFO L470 AbstractCegarLoop]: Abstraction has 20238 states and 30208 transitions. [2021-11-04 06:08:22,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 06:08:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 20238 states and 30208 transitions. [2021-11-04 06:08:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-04 06:08:22,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:08:22,088 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] [2021-11-04 06:08:22,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 06:08:22,089 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 06:08:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:08:22,091 INFO L85 PathProgramCache]: Analyzing trace with hash -385919961, now seen corresponding path program 1 times [2021-11-04 06:08:22,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:08:22,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614893672] [2021-11-04 06:08:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:08:22,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:08:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:08:22,494 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 06:08:22,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:08:22,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614893672] [2021-11-04 06:08:22,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614893672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:08:22,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:08:22,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:08:22,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890212534] [2021-11-04 06:08:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:08:22,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:08:22,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:08:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:08:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:08:22,497 INFO L87 Difference]: Start difference. First operand 20238 states and 30208 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 06:08:24,646 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:08:42,166 WARN L515 Checker$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 06:08:46,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 06:09:49,048 WARN L515 Checker$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 06:09:51,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:09:52,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:10:07,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:10:28,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:10:37,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:10:40,145 WARN L515 Checker$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 06:10:53,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:10:57,405 WARN L515 Checker$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 06:10:59,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:11:12,358 WARN L515 Checker$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 06:12:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:12:30,146 INFO L93 Difference]: Finished difference Result 40473 states and 60414 transitions. [2021-11-04 06:12:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:12:30,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-11-04 06:12:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:12:30,210 INFO L225 Difference]: With dead ends: 40473 [2021-11-04 06:12:30,211 INFO L226 Difference]: Without dead ends: 20241 [2021-11-04 06:12:30,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:12:30,245 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 2 mSDsluCounter, 15513 mSDsCounter, 0 mSdLazyCounter, 30609 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 232852.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 30618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 195.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30609 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245901.83ms IncrementalHoareTripleChecker+Time [2021-11-04 06:12:30,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 424 Invalid, 30618 Unknown, 0 Unchecked, 195.03ms Time], IncrementalHoareTripleChecker [0 Valid, 30609 Invalid, 9 Unknown, 0 Unchecked, 245901.83ms Time] [2021-11-04 06:12:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20241 states. [2021-11-04 06:12:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20241 to 20239. [2021-11-04 06:12:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20239 states, 19964 states have (on average 1.492035664195552) internal successors, (29787), 19976 states have internal predecessors, (29787), 210 states have call successors, (210), 64 states have call predecessors, (210), 64 states have return successors, (212), 204 states have call predecessors, (212), 210 states have call successors, (212) [2021-11-04 06:12:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20239 states to 20239 states and 30209 transitions. [2021-11-04 06:12:30,644 INFO L78 Accepts]: Start accepts. Automaton has 20239 states and 30209 transitions. Word has length 25 [2021-11-04 06:12:30,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:12:30,646 INFO L470 AbstractCegarLoop]: Abstraction has 20239 states and 30209 transitions. [2021-11-04 06:12:30,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 06:12:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 20239 states and 30209 transitions. [2021-11-04 06:12:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-04 06:12:30,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:12:30,651 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] [2021-11-04 06:12:30,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 06:12:30,651 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 06:12:30,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:12:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash -19887870, now seen corresponding path program 1 times [2021-11-04 06:12:30,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:12:30,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753345831] [2021-11-04 06:12:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:12:30,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:12:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:12:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:12:31,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:12:31,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753345831] [2021-11-04 06:12:31,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753345831] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 06:12:31,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055147870] [2021-11-04 06:12:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:12:31,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 06:12:31,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:12:31,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 06:12:31,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 06:12:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:12:33,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 5236 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 06:12:33,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 06:12:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 06:12:34,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 06:12:34,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055147870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:12:34,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 06:12:34,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-04 06:12:34,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918692702] [2021-11-04 06:12:34,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:12:34,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:12:34,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:12:34,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:12:34,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 06:12:34,162 INFO L87 Difference]: Start difference. First operand 20239 states and 30209 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 06:12:36,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:12:47,503 WARN L515 Checker$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 06:12:51,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 06:13:25,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:13:34,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:13:51,781 WARN L515 Checker$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 06:14:00,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:14:47,201 WARN L515 Checker$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 06:15:50,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:16:13,270 WARN L515 Checker$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 06:16:20,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:16:28,892 WARN L515 Checker$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 06:16:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:16:54,092 INFO L93 Difference]: Finished difference Result 40272 states and 60098 transitions. [2021-11-04 06:16:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:16:54,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-11-04 06:16:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:16:54,185 INFO L225 Difference]: With dead ends: 40272 [2021-11-04 06:16:54,185 INFO L226 Difference]: Without dead ends: 40241 [2021-11-04 06:16:54,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 95.69ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 06:16:54,207 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 15333 mSDsluCounter, 15513 mSDsCounter, 0 mSdLazyCounter, 30686 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 237647.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15336 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 30695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 196.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30686 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 257274.23ms IncrementalHoareTripleChecker+Time [2021-11-04 06:16:54,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15336 Valid, 534 Invalid, 30695 Unknown, 0 Unchecked, 196.70ms Time], IncrementalHoareTripleChecker [0 Valid, 30686 Invalid, 9 Unknown, 0 Unchecked, 257274.23ms Time] [2021-11-04 06:16:54,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40241 states. [2021-11-04 06:16:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40241 to 40183. [2021-11-04 06:16:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40183 states, 39635 states have (on average 1.491913712627728) internal successors, (59132), 39659 states have internal predecessors, (59132), 419 states have call successors, (419), 128 states have call predecessors, (419), 128 states have return successors, (427), 407 states have call predecessors, (427), 419 states have call successors, (427) [2021-11-04 06:16:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40183 states to 40183 states and 59978 transitions. [2021-11-04 06:16:54,975 INFO L78 Accepts]: Start accepts. Automaton has 40183 states and 59978 transitions. Word has length 28 [2021-11-04 06:16:54,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:16:54,975 INFO L470 AbstractCegarLoop]: Abstraction has 40183 states and 59978 transitions. [2021-11-04 06:16:54,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 06:16:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand 40183 states and 59978 transitions. [2021-11-04 06:16:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-04 06:16:55,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:16:55,028 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:16:55,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 06:16:55,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 06:16:55,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 06:16:55,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:16:55,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1880515144, now seen corresponding path program 1 times [2021-11-04 06:16:55,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:16:55,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747151268] [2021-11-04 06:16:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:16:55,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:16:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:16:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 06:16:55,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:16:55,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747151268] [2021-11-04 06:16:55,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747151268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:16:55,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:16:55,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:16:55,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585857330] [2021-11-04 06:16:55,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:16:55,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:16:55,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:16:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:16:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:16:55,592 INFO L87 Difference]: Start difference. First operand 40183 states and 59978 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 06:16:57,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:17:03,695 WARN L515 Checker$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 06:17:06,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15