./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.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 dc0241e7c40235715d7f33abd33c740b0c60d48c0a8a0992cf99bd2d48b4ffd0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:21:17,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:21:17,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:21:17,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:21:17,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:21:17,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:21:17,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:21:17,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:21:17,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:21:17,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:21:17,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:21:17,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:21:17,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:21:17,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:21:17,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:21:17,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:21:17,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:21:17,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:21:17,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:21:17,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:21:17,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:21:17,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:21:17,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:21:17,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:21:17,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:21:17,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:21:17,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:21:17,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:21:17,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:21:17,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:21:17,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:21:17,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:21:17,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:21:17,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:21:17,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:21:17,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:21:17,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:21:17,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:21:17,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:21:17,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:21:17,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:21:17,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:21:17,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:21:17,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:21:17,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:21:17,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:21:17,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:21:17,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:21:17,376 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:21:17,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:21:17,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:21:17,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:21:17,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:21:17,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:21:17,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:21:17,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:21:17,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:21:17,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:21:17,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:21:17,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:21:17,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:21:17,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:21:17,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:21:17,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:21:17,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:21:17,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:21:17,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:21:17,379 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:21:17,379 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:21:17,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:21:17,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:21:17,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0241e7c40235715d7f33abd33c740b0c60d48c0a8a0992cf99bd2d48b4ffd0 [2021-11-06 20:21:17,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:21:17,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:21:17,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:21:17,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:21:17,613 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:21:17,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-06 20:21:17,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b72368ff/ee8078e077b54624b3f0904c4ca83e62/FLAG0dc8c0907 [2021-11-06 20:21:18,262 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:21:18,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-06 20:21:18,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b72368ff/ee8078e077b54624b3f0904c4ca83e62/FLAG0dc8c0907 [2021-11-06 20:21:18,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b72368ff/ee8078e077b54624b3f0904c4ca83e62 [2021-11-06 20:21:18,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:21:18,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:21:18,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:21:18,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:21:18,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:21:18,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:21:18" (1/1) ... [2021-11-06 20:21:18,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11999c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:18, skipping insertion in model container [2021-11-06 20:21:18,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:21:18" (1/1) ... [2021-11-06 20:21:18,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:21:18,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:21:21,001 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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[336326,336339] [2021-11-06 20:21:21,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:21:21,074 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:21:21,426 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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[336326,336339] [2021-11-06 20:21:21,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:21:21,542 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:21:21,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21 WrapperNode [2021-11-06 20:21:21,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:21:21,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:21:21,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:21:21,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:21:21,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (1/1) ... [2021-11-06 20:21:21,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (1/1) ... [2021-11-06 20:21:22,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:21:22,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:21:22,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:21:22,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:21:22,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (1/1) ... [2021-11-06 20:21:22,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (1/1) ... [2021-11-06 20:21:22,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (1/1) ... [2021-11-06 20:21:22,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (1/1) ... [2021-11-06 20:21:23,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (1/1) ... [2021-11-06 20:21:23,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (1/1) ... [2021-11-06 20:21:23,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (1/1) ... [2021-11-06 20:21:23,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:21:23,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:21:23,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:21:23,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:21:23,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (1/1) ... [2021-11-06 20:21:23,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:21:23,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:21:23,597 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) [2021-11-06 20:21:23,602 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 [2021-11-06 20:21:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_9_6 [2021-11-06 20:21:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_9_6 [2021-11-06 20:21:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure macb_probe [2021-11-06 20:21:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_probe [2021-11-06 20:21:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:21:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:21:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:21:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:21:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure macb_open [2021-11-06 20:21:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_open [2021-11-06 20:21:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure macb_alloc_consistent [2021-11-06 20:21:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_alloc_consistent [2021-11-06 20:21:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:21:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-06 20:21:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-06 20:21:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:21:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 20:21:23,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 20:21:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:21:23,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:21:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:21:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:21:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_17 [2021-11-06 20:21:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_17 [2021-11-06 20:21:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:21:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:21:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:21:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:21:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:21:37,661 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:21:37,661 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 20:21:37,661 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-06 20:21:37,661 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-06 20:21:37,662 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:21:37,662 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 20:21:37,662 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:21:37,662 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 20:21:37,662 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:21:37,662 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:21:40,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:21:40,385 INFO L299 CfgBuilder]: Removed 6721 assume(true) statements. [2021-11-06 20:21:40,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:21:40 BoogieIcfgContainer [2021-11-06 20:21:40,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:21:40,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:21:40,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:21:40,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:21:40,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:21:18" (1/3) ... [2021-11-06 20:21:40,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e2d7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:21:40, skipping insertion in model container [2021-11-06 20:21:40,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:21" (2/3) ... [2021-11-06 20:21:40,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e2d7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:21:40, skipping insertion in model container [2021-11-06 20:21:40,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:21:40" (3/3) ... [2021-11-06 20:21:40,398 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-06 20:21:40,403 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:21:40,404 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-06 20:21:40,451 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:21:40,455 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 [2021-11-06 20:21:40,456 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-06 20:21:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 5893 states, 5853 states have (on average 1.3135144370408338) internal successors, (7688), 5860 states have internal predecessors, (7688), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-06 20:21:40,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 20:21:40,539 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:40,540 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:40,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 20:21:40,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1130171376, now seen corresponding path program 1 times [2021-11-06 20:21:40,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:40,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871233619] [2021-11-06 20:21:40,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:40,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:21:41,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:41,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871233619] [2021-11-06 20:21:41,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871233619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:41,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:41,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:41,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082718819] [2021-11-06 20:21:41,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:21:41,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:41,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:21:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:41,078 INFO L87 Difference]: Start difference. First operand has 5893 states, 5853 states have (on average 1.3135144370408338) internal successors, (7688), 5860 states have internal predecessors, (7688), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-06 20:21:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:43,833 INFO L93 Difference]: Finished difference Result 17375 states and 22875 transitions. [2021-11-06 20:21:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:21:43,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-06 20:21:43,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:43,898 INFO L225 Difference]: With dead ends: 17375 [2021-11-06 20:21:43,898 INFO L226 Difference]: Without dead ends: 11341 [2021-11-06 20:21:43,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11341 states. [2021-11-06 20:21:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11341 to 11341. [2021-11-06 20:21:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11341 states, 11269 states have (on average 1.2827225130890052) internal successors, (14455), 11276 states have internal predecessors, (14455), 50 states have call successors, (50), 14 states have call predecessors, (50), 14 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-06 20:21:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11341 states to 11341 states and 14555 transitions. [2021-11-06 20:21:44,298 INFO L78 Accepts]: Start accepts. Automaton has 11341 states and 14555 transitions. Word has length 48 [2021-11-06 20:21:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:44,299 INFO L470 AbstractCegarLoop]: Abstraction has 11341 states and 14555 transitions. [2021-11-06 20:21:44,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-06 20:21:44,300 INFO L276 IsEmpty]: Start isEmpty. Operand 11341 states and 14555 transitions. [2021-11-06 20:21:44,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 20:21:44,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:44,313 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:44,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:21:44,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 20:21:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash 980654295, now seen corresponding path program 1 times [2021-11-06 20:21:44,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:44,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285390880] [2021-11-06 20:21:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:44,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:21:44,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:44,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285390880] [2021-11-06 20:21:44,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285390880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:44,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:44,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:44,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550212202] [2021-11-06 20:21:44,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:21:44,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:44,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:21:44,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:44,492 INFO L87 Difference]: Start difference. First operand 11341 states and 14555 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-11-06 20:21:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:46,923 INFO L93 Difference]: Finished difference Result 22588 states and 29006 transitions. [2021-11-06 20:21:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:21:46,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-06 20:21:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:47,032 INFO L225 Difference]: With dead ends: 22588 [2021-11-06 20:21:47,032 INFO L226 Difference]: Without dead ends: 16931 [2021-11-06 20:21:47,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16931 states. [2021-11-06 20:21:47,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16931 to 16931. [2021-11-06 20:21:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16931 states, 16827 states have (on average 1.283354133238248) internal successors, (21595), 16834 states have internal predecessors, (21595), 75 states have call successors, (75), 21 states have call predecessors, (75), 21 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-06 20:21:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16931 states to 16931 states and 21745 transitions. [2021-11-06 20:21:47,520 INFO L78 Accepts]: Start accepts. Automaton has 16931 states and 21745 transitions. Word has length 73 [2021-11-06 20:21:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:47,521 INFO L470 AbstractCegarLoop]: Abstraction has 16931 states and 21745 transitions. [2021-11-06 20:21:47,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-11-06 20:21:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand 16931 states and 21745 transitions. [2021-11-06 20:21:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 20:21:47,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:47,527 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:47,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:21:47,528 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 20:21:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:47,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1238819733, now seen corresponding path program 1 times [2021-11-06 20:21:47,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:47,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546211114] [2021-11-06 20:21:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:47,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 20:21:47,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:47,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546211114] [2021-11-06 20:21:47,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546211114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:47,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:47,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:47,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734926166] [2021-11-06 20:21:47,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:21:47,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:21:47,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:21:47,825 INFO L87 Difference]: Start difference. First operand 16931 states and 21745 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-06 20:21:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:48,443 INFO L93 Difference]: Finished difference Result 16931 states and 21745 transitions. [2021-11-06 20:21:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 20:21:48,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 73 [2021-11-06 20:21:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:48,508 INFO L225 Difference]: With dead ends: 16931 [2021-11-06 20:21:48,509 INFO L226 Difference]: Without dead ends: 16927 [2021-11-06 20:21:48,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 20:21:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16927 states. [2021-11-06 20:21:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16927 to 16927. [2021-11-06 20:21:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16927 states, 16825 states have (on average 1.2832689450222883) internal successors, (21591), 16830 states have internal predecessors, (21591), 75 states have call successors, (75), 21 states have call predecessors, (75), 21 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-06 20:21:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16927 states to 16927 states and 21741 transitions. [2021-11-06 20:21:48,898 INFO L78 Accepts]: Start accepts. Automaton has 16927 states and 21741 transitions. Word has length 73 [2021-11-06 20:21:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:48,898 INFO L470 AbstractCegarLoop]: Abstraction has 16927 states and 21741 transitions. [2021-11-06 20:21:48,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-06 20:21:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 16927 states and 21741 transitions. [2021-11-06 20:21:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 20:21:48,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:48,905 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:48,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:21:48,905 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 20:21:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash 800171192, now seen corresponding path program 1 times [2021-11-06 20:21:48,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:48,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637902276] [2021-11-06 20:21:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:48,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 20:21:49,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:49,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637902276] [2021-11-06 20:21:49,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637902276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:49,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:49,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:49,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718695182] [2021-11-06 20:21:49,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:21:49,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:49,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:21:49,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:21:49,165 INFO L87 Difference]: Start difference. First operand 16927 states and 21741 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-06 20:21:49,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:49,858 INFO L93 Difference]: Finished difference Result 33678 states and 43436 transitions. [2021-11-06 20:21:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 20:21:49,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 75 [2021-11-06 20:21:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:50,029 INFO L225 Difference]: With dead ends: 33678 [2021-11-06 20:21:50,030 INFO L226 Difference]: Without dead ends: 33674 [2021-11-06 20:21:50,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 20:21:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33674 states. [2021-11-06 20:21:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33674 to 28687. [2021-11-06 20:21:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28687 states, 28489 states have (on average 1.2855137070448244) internal successors, (36623), 28494 states have internal predecessors, (36623), 150 states have call successors, (150), 42 states have call predecessors, (150), 42 states have return successors, (300), 150 states have call predecessors, (300), 150 states have call successors, (300) [2021-11-06 20:21:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28687 states to 28687 states and 37073 transitions. [2021-11-06 20:21:51,093 INFO L78 Accepts]: Start accepts. Automaton has 28687 states and 37073 transitions. Word has length 75 [2021-11-06 20:21:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:51,094 INFO L470 AbstractCegarLoop]: Abstraction has 28687 states and 37073 transitions. [2021-11-06 20:21:51,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-06 20:21:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 28687 states and 37073 transitions. [2021-11-06 20:21:51,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 20:21:51,101 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:51,101 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:51,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:21:51,101 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 20:21:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash 165718619, now seen corresponding path program 1 times [2021-11-06 20:21:51,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:51,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489283515] [2021-11-06 20:21:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:51,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 20:21:51,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:51,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489283515] [2021-11-06 20:21:51,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489283515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:51,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:51,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:51,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242097514] [2021-11-06 20:21:51,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:21:51,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:51,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:21:51,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:21:51,274 INFO L87 Difference]: Start difference. First operand 28687 states and 37073 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:52,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:52,517 INFO L93 Difference]: Finished difference Result 57213 states and 74415 transitions. [2021-11-06 20:21:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 20:21:52,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 20:21:52,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:52,852 INFO L225 Difference]: With dead ends: 57213 [2021-11-06 20:21:52,853 INFO L226 Difference]: Without dead ends: 57209 [2021-11-06 20:21:52,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 20:21:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57209 states. [2021-11-06 20:21:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57209 to 52199. [2021-11-06 20:21:54,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52199 states, 51809 states have (on average 1.287054372792372) internal successors, (66681), 51814 states have internal predecessors, (66681), 300 states have call successors, (300), 84 states have call predecessors, (300), 84 states have return successors, (1050), 300 states have call predecessors, (1050), 300 states have call successors, (1050) [2021-11-06 20:21:54,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52199 states to 52199 states and 68031 transitions. [2021-11-06 20:21:54,722 INFO L78 Accepts]: Start accepts. Automaton has 52199 states and 68031 transitions. Word has length 77 [2021-11-06 20:21:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:54,724 INFO L470 AbstractCegarLoop]: Abstraction has 52199 states and 68031 transitions. [2021-11-06 20:21:54,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 52199 states and 68031 transitions. [2021-11-06 20:21:54,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 20:21:54,733 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:54,733 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:54,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:21:54,734 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 20:21:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash 342152318, now seen corresponding path program 1 times [2021-11-06 20:21:54,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:54,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12278538] [2021-11-06 20:21:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:54,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 20:21:54,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:54,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12278538] [2021-11-06 20:21:54,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12278538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:54,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:54,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:54,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529748935] [2021-11-06 20:21:54,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:21:54,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:21:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:21:54,945 INFO L87 Difference]: Start difference. First operand 52199 states and 68031 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-06 20:21:56,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:56,824 INFO L93 Difference]: Finished difference Result 104285 states and 137288 transitions. [2021-11-06 20:21:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 20:21:56,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-06 20:21:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:57,592 INFO L225 Difference]: With dead ends: 104285 [2021-11-06 20:21:57,593 INFO L226 Difference]: Without dead ends: 104253 [2021-11-06 20:21:57,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 20:21:57,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104253 states. [2021-11-06 20:22:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104253 to 104245. [2021-11-06 20:22:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104245 states, 103471 states have (on average 1.2872882256864242) internal successors, (133197), 103476 states have internal predecessors, (133197), 600 states have call successors, (600), 168 states have call predecessors, (600), 168 states have return successors, (3450), 600 states have call predecessors, (3450), 600 states have call successors, (3450) [2021-11-06 20:22:01,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104245 states to 104245 states and 137247 transitions. [2021-11-06 20:22:01,261 INFO L78 Accepts]: Start accepts. Automaton has 104245 states and 137247 transitions. Word has length 79 [2021-11-06 20:22:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:22:01,262 INFO L470 AbstractCegarLoop]: Abstraction has 104245 states and 137247 transitions. [2021-11-06 20:22:01,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-06 20:22:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 104245 states and 137247 transitions. [2021-11-06 20:22:01,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 20:22:01,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:22:01,328 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:22:01,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:22:01,329 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 20:22:01,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:22:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash 327484887, now seen corresponding path program 1 times [2021-11-06 20:22:01,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:22:01,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015455596] [2021-11-06 20:22:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:22:01,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:22:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:22:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 20:22:01,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:22:01,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015455596] [2021-11-06 20:22:01,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015455596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:22:01,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:22:01,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:22:01,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578577184] [2021-11-06 20:22:01,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:22:01,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:22:01,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:22:01,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:01,495 INFO L87 Difference]: Start difference. First operand 104245 states and 137247 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-06 20:22:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:22:08,964 INFO L93 Difference]: Finished difference Result 295664 states and 388024 transitions. [2021-11-06 20:22:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:22:08,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 112 [2021-11-06 20:22:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:22:10,205 INFO L225 Difference]: With dead ends: 295664 [2021-11-06 20:22:10,205 INFO L226 Difference]: Without dead ends: 191511 [2021-11-06 20:22:11,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191511 states. [2021-11-06 20:22:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191511 to 191199. [2021-11-06 20:22:15,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191199 states, 190041 states have (on average 1.2858383190995628) internal successors, (244362), 190046 states have internal predecessors, (244362), 816 states have call successors, (816), 336 states have call predecessors, (816), 336 states have return successors, (4692), 816 states have call predecessors, (4692), 816 states have call successors, (4692) [2021-11-06 20:22:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191199 states to 191199 states and 249870 transitions. [2021-11-06 20:22:17,259 INFO L78 Accepts]: Start accepts. Automaton has 191199 states and 249870 transitions. Word has length 112 [2021-11-06 20:22:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:22:17,260 INFO L470 AbstractCegarLoop]: Abstraction has 191199 states and 249870 transitions. [2021-11-06 20:22:17,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-06 20:22:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 191199 states and 249870 transitions. [2021-11-06 20:22:17,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 20:22:17,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:22:17,318 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:22:17,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 20:22:17,319 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 20:22:17,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:22:17,319 INFO L85 PathProgramCache]: Analyzing trace with hash -735697307, now seen corresponding path program 1 times [2021-11-06 20:22:17,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:22:17,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28579084] [2021-11-06 20:22:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:22:17,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:22:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:22:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 20:22:17,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:22:17,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28579084] [2021-11-06 20:22:17,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28579084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:22:17,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:22:17,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:22:17,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102705501] [2021-11-06 20:22:17,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:22:17,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:22:17,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:22:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:17,490 INFO L87 Difference]: Start difference. First operand 191199 states and 249870 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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)