./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.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 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:18:19,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:18:19,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:18:20,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:18:20,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:18:20,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:18:20,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:18:20,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:18:20,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:18:20,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:18:20,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:18:20,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:18:20,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:18:20,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:18:20,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:18:20,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:18:20,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:18:20,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:18:20,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:18:20,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:18:20,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:18:20,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:18:20,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:18:20,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:18:20,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:18:20,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:18:20,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:18:20,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:18:20,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:18:20,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:18:20,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:18:20,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:18:20,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:18:20,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:18:20,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:18:20,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:18:20,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:18:20,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:18:20,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:18:20,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:18:20,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:18:20,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:18:20,134 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:18:20,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:18:20,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:18:20,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:18:20,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:18:20,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:18:20,137 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:18:20,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:18:20,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:18:20,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:18:20,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:18:20,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:18:20,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:18:20,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:18:20,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:18:20,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:18:20,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:18:20,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:18:20,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:18:20,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:18:20,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:18:20,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:18:20,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:18:20,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:18:20,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:18:20,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:18:20,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:18:20,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:18:20,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:18:20,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 [2021-11-07 13:18:20,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:18:20,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:18:20,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:18:20,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:18:20,365 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:18:20,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-07 13:18:20,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff535dc04/5f6a6f6bea8c4998b694af7c353cabbf/FLAG89a0ce50d [2021-11-07 13:18:21,132 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:18:21,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-07 13:18:21,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff535dc04/5f6a6f6bea8c4998b694af7c353cabbf/FLAG89a0ce50d [2021-11-07 13:18:21,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff535dc04/5f6a6f6bea8c4998b694af7c353cabbf [2021-11-07 13:18:21,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:18:21,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:18:21,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:18:21,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:18:21,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:18:21,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:18:21" (1/1) ... [2021-11-07 13:18:21,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330ddae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:21, skipping insertion in model container [2021-11-07 13:18:21,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:18:21" (1/1) ... [2021-11-07 13:18:21,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:18:21,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:18:22,506 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-11-07 13:18:23,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:18:23,993 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:18:24,103 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-11-07 13:18:24,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:18:24,383 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:18:24,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24 WrapperNode [2021-11-07 13:18:24,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:18:24,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:18:24,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:18:24,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:18:24,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (1/1) ... [2021-11-07 13:18:24,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (1/1) ... [2021-11-07 13:18:27,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:18:27,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:18:27,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:18:27,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:18:27,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (1/1) ... [2021-11-07 13:18:27,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (1/1) ... [2021-11-07 13:18:28,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (1/1) ... [2021-11-07 13:18:28,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (1/1) ... [2021-11-07 13:18:30,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (1/1) ... [2021-11-07 13:18:30,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (1/1) ... [2021-11-07 13:18:30,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (1/1) ... [2021-11-07 13:18:31,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:18:31,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:18:31,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:18:31,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:18:31,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (1/1) ... [2021-11-07 13:18:31,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:18:31,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:18:31,647 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) [2021-11-07 13:18:31,667 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 [2021-11-07 13:18:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:18:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:18:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-07 13:18:31,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-07 13:18:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:18:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:18:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 13:18:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:18:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:18:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:18:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:18:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:18:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:18:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-07 13:18:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:18:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:18:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 13:18:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 13:18:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:18:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-07 13:18:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:18:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:19:20,194 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:19:20,195 INFO L299 CfgBuilder]: Removed 40139 assume(true) statements. [2021-11-07 13:19:20,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:20 BoogieIcfgContainer [2021-11-07 13:19:20,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:19:20,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:19:20,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:19:20,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:19:20,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:18:21" (1/3) ... [2021-11-07 13:19:20,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec94d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:20, skipping insertion in model container [2021-11-07 13:19:20,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:24" (2/3) ... [2021-11-07 13:19:20,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec94d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:20, skipping insertion in model container [2021-11-07 13:19:20,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:20" (3/3) ... [2021-11-07 13:19:20,222 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-07 13:19:20,226 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:19:20,227 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:19:20,325 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:19:20,332 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 [2021-11-07 13:19:20,332 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:19:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 23220 states, 23212 states have (on average 1.2532741685335171) internal successors, (29091), 23214 states have internal predecessors, (29091), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-07 13:19:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 13:19:20,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:19:20,753 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] [2021-11-07 13:19:20,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:19:20,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:19:20,762 INFO L85 PathProgramCache]: Analyzing trace with hash 471113658, now seen corresponding path program 1 times [2021-11-07 13:19:20,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:19:20,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437568982] [2021-11-07 13:19:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:19:20,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:19:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:19:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:19:21,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:19:21,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437568982] [2021-11-07 13:19:21,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437568982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:19:21,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:19:21,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:19:21,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597626805] [2021-11-07 13:19:21,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:19:21,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:19:21,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:19:21,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:19:21,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:19:21,407 INFO L87 Difference]: Start difference. First operand has 23220 states, 23212 states have (on average 1.2532741685335171) internal successors, (29091), 23214 states have internal predecessors, (29091), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-11-07 13:19:23,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:19:25,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:19:25,201 INFO L93 Difference]: Finished difference Result 68612 states and 85908 transitions. [2021-11-07 13:19:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:19:25,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-07 13:19:25,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:19:25,427 INFO L225 Difference]: With dead ends: 68612 [2021-11-07 13:19:25,427 INFO L226 Difference]: Without dead ends: 45241 [2021-11-07 13:19:25,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:19:25,525 INFO L933 BasicCegarLoop]: 28112 mSDtfsCounter, 27973 mSDsluCounter, 28097 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2092.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27973 SdHoareTripleChecker+Valid, 56209 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 146.75ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2213.26ms IncrementalHoareTripleChecker+Time [2021-11-07 13:19:25,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27973 Valid, 56209 Invalid, 15 Unknown, 0 Unchecked, 146.75ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2213.26ms Time] [2021-11-07 13:19:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45241 states. [2021-11-07 13:19:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45241 to 45241. [2021-11-07 13:19:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45241 states, 45228 states have (on average 1.233085699124436) internal successors, (55770), 45230 states have internal predecessors, (55770), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-07 13:19:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45241 states to 45241 states and 55786 transitions. [2021-11-07 13:19:26,872 INFO L78 Accepts]: Start accepts. Automaton has 45241 states and 55786 transitions. Word has length 39 [2021-11-07 13:19:26,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:19:26,873 INFO L470 AbstractCegarLoop]: Abstraction has 45241 states and 55786 transitions. [2021-11-07 13:19:26,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-11-07 13:19:26,875 INFO L276 IsEmpty]: Start isEmpty. Operand 45241 states and 55786 transitions. [2021-11-07 13:19:26,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 13:19:26,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:19:26,879 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] [2021-11-07 13:19:26,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:19:26,880 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:19:26,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:19:26,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1996872438, now seen corresponding path program 1 times [2021-11-07 13:19:26,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:19:26,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307830166] [2021-11-07 13:19:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:19:26,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:19:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:19:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:19:27,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:19:27,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307830166] [2021-11-07 13:19:27,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307830166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:19:27,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:19:27,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:19:27,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183257688] [2021-11-07 13:19:27,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:19:27,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:19:27,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:19:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:19:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:19:27,184 INFO L87 Difference]: Start difference. First operand 45241 states and 55786 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-11-07 13:19:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:19:30,265 INFO L93 Difference]: Finished difference Result 135637 states and 167271 transitions. [2021-11-07 13:19:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:19:30,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2021-11-07 13:19:30,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:19:30,642 INFO L225 Difference]: With dead ends: 135637 [2021-11-07 13:19:30,643 INFO L226 Difference]: Without dead ends: 90434 [2021-11-07 13:19:30,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.70ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:19:30,781 INFO L933 BasicCegarLoop]: 27800 mSDtfsCounter, 27835 mSDsluCounter, 83270 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 917.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27835 SdHoareTripleChecker+Valid, 111070 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.18ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1234.25ms IncrementalHoareTripleChecker+Time [2021-11-07 13:19:30,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27835 Valid, 111070 Invalid, 875 Unknown, 0 Unchecked, 95.18ms Time], IncrementalHoareTripleChecker [40 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 1234.25ms Time] [2021-11-07 13:19:30,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90434 states. [2021-11-07 13:19:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90434 to 90306. [2021-11-07 13:19:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90306 states, 90281 states have (on average 1.2321861742780873) internal successors, (111243), 90285 states have internal predecessors, (111243), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) [2021-11-07 13:19:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90306 states to 90306 states and 111283 transitions. [2021-11-07 13:19:33,239 INFO L78 Accepts]: Start accepts. Automaton has 90306 states and 111283 transitions. Word has length 43 [2021-11-07 13:19:33,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:19:33,241 INFO L470 AbstractCegarLoop]: Abstraction has 90306 states and 111283 transitions. [2021-11-07 13:19:33,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-11-07 13:19:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 90306 states and 111283 transitions. [2021-11-07 13:19:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 13:19:33,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:19:33,273 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:19:33,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:19:33,274 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:19:33,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:19:33,275 INFO L85 PathProgramCache]: Analyzing trace with hash 72115487, now seen corresponding path program 1 times [2021-11-07 13:19:33,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:19:33,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381675845] [2021-11-07 13:19:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:19:33,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:19:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:19:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:19:33,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:19:33,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381675845] [2021-11-07 13:19:33,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381675845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:19:33,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:19:33,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:19:33,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25461384] [2021-11-07 13:19:33,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:19:33,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:19:33,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:19:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:19:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:19:33,583 INFO L87 Difference]: Start difference. First operand 90306 states and 111283 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-07 13:19:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:19:39,220 INFO L93 Difference]: Finished difference Result 381830 states and 471451 transitions. [2021-11-07 13:19:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:19:39,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 90 [2021-11-07 13:19:39,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:19:40,565 INFO L225 Difference]: With dead ends: 381830 [2021-11-07 13:19:40,566 INFO L226 Difference]: Without dead ends: 291566 [2021-11-07 13:19:40,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.54ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:19:40,836 INFO L933 BasicCegarLoop]: 62784 mSDtfsCounter, 45049 mSDsluCounter, 56140 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45051 SdHoareTripleChecker+Valid, 118924 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.68ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.80ms IncrementalHoareTripleChecker+Time [2021-11-07 13:19:40,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45051 Valid, 118924 Invalid, 76 Unknown, 0 Unchecked, 101.68ms Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 97.80ms Time] [2021-11-07 13:19:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291566 states. [2021-11-07 13:19:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291566 to 176992. [2021-11-07 13:19:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176992 states, 176943 states have (on average 1.2293563463940365) internal successors, (217526), 176951 states have internal predecessors, (217526), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (72), 32 states have call predecessors, (72), 32 states have call successors, (72) [2021-11-07 13:19:46,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176992 states to 176992 states and 217630 transitions. [2021-11-07 13:19:46,362 INFO L78 Accepts]: Start accepts. Automaton has 176992 states and 217630 transitions. Word has length 90 [2021-11-07 13:19:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:19:46,364 INFO L470 AbstractCegarLoop]: Abstraction has 176992 states and 217630 transitions. [2021-11-07 13:19:46,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-07 13:19:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 176992 states and 217630 transitions. [2021-11-07 13:19:46,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 13:19:46,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:19:46,407 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:19:46,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:19:46,407 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:19:46,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:19:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash 820102842, now seen corresponding path program 1 times [2021-11-07 13:19:46,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:19:46,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661541623] [2021-11-07 13:19:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:19:46,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:19:46,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 13:19:46,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787133940] [2021-11-07 13:19:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:19:46,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:19:46,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:19:46,507 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) [2021-11-07 13:19:46,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 13:19:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:19:48,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 4556 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 13:19:48,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:19:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:19:48,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:19:48,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:19:48,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661541623] [2021-11-07 13:19:48,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 13:19:48,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787133940] [2021-11-07 13:19:48,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787133940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:19:48,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:19:48,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:19:48,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108996052] [2021-11-07 13:19:48,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:19:48,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:19:48,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:19:48,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:19:48,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:19:48,743 INFO L87 Difference]: Start difference. First operand 176992 states and 217630 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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)