./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.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 bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 23:59:08,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:59:08,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:59:08,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:59:08,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:59:08,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:59:08,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:59:08,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:59:08,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:59:08,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:59:08,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:59:08,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:59:08,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:59:08,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:59:08,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:59:08,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:59:08,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:59:08,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:59:08,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:59:08,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:59:08,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:59:08,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:59:08,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:59:08,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:59:08,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:59:08,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:59:08,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:59:08,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:59:08,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:59:08,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:59:08,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:59:08,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:59:08,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:59:08,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:59:08,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:59:08,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:59:08,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:59:08,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:59:08,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:59:08,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:59:08,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:59:08,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 23:59:08,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:59:08,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:59:08,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 23:59:08,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 23:59:08,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:59:08,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:59:08,551 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 23:59:08,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:59:08,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:59:08,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:59:08,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:59:08,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:59:08,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:59:08,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:59:08,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:59:08,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:59:08,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:59:08,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 23:59:08,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 23:59:08,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:59:08,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:59:08,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:59:08,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:59:08,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 23:59:08,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:59:08,554 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 23:59:08,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 23:59:08,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:59:08,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 23:59:08,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2021-11-22 23:59:08,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:59:08,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:59:08,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:59:08,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:59:08,762 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:59:08,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-22 23:59:08,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38bbf0558/c44bdf3db995450eaff726a20cab2aba/FLAGf11bc104e [2021-11-22 23:59:09,428 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:59:09,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-22 23:59:09,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38bbf0558/c44bdf3db995450eaff726a20cab2aba/FLAGf11bc104e [2021-11-22 23:59:09,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38bbf0558/c44bdf3db995450eaff726a20cab2aba [2021-11-22 23:59:09,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:59:09,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:59:09,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:59:09,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:59:09,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:59:09,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:59:09" (1/1) ... [2021-11-22 23:59:09,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d92ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:09, skipping insertion in model container [2021-11-22 23:59:09,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:59:09" (1/1) ... [2021-11-22 23:59:09,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:59:09,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:59:10,693 WARN L230 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-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-22 23:59:10,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:59:10,748 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:59:10,893 WARN L230 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-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-22 23:59:10,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:59:10,946 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:59:10,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10 WrapperNode [2021-11-22 23:59:10,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:59:10,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:59:10,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:59:10,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:59:10,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (1/1) ... [2021-11-22 23:59:11,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (1/1) ... [2021-11-22 23:59:11,915 INFO L137 Inliner]: procedures = 189, calls = 1289, calls flagged for inlining = 403, calls inlined = 6320, statements flattened = 58571 [2021-11-22 23:59:11,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:59:11,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:59:11,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:59:11,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:59:11,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (1/1) ... [2021-11-22 23:59:11,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (1/1) ... [2021-11-22 23:59:12,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (1/1) ... [2021-11-22 23:59:12,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (1/1) ... [2021-11-22 23:59:12,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (1/1) ... [2021-11-22 23:59:13,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (1/1) ... [2021-11-22 23:59:13,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (1/1) ... [2021-11-22 23:59:13,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:59:13,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:59:13,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:59:13,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:59:13,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (1/1) ... [2021-11-22 23:59:13,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:59:13,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:59:13,641 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) [2021-11-22 23:59:13,719 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 [2021-11-22 23:59:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-22 23:59:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-22 23:59:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-22 23:59:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 23:59:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-22 23:59:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-22 23:59:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 23:59:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 23:59:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 23:59:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-22 23:59:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-22 23:59:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 23:59:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 23:59:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:59:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 23:59:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:59:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:59:14,626 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:59:14,628 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:59:46,621 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:59:46,672 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:59:46,673 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 23:59:46,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:59:46 BoogieIcfgContainer [2021-11-22 23:59:46,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:59:46,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 23:59:46,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 23:59:46,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 23:59:46,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:59:09" (1/3) ... [2021-11-22 23:59:46,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff578a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:59:46, skipping insertion in model container [2021-11-22 23:59:46,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:59:10" (2/3) ... [2021-11-22 23:59:46,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff578a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:59:46, skipping insertion in model container [2021-11-22 23:59:46,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:59:46" (3/3) ... [2021-11-22 23:59:46,690 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-22 23:59:46,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 23:59:46,694 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-22 23:59:46,757 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 23:59:46,768 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 [2021-11-22 23:59:46,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-22 23:59:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 11769 states, 11733 states have (on average 1.310832694110628) internal successors, (15380), 11752 states have internal predecessors, (15380), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-22 23:59:46,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 23:59:46,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:59:46,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:59:46,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 23:59:46,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:59:46,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1619918201, now seen corresponding path program 1 times [2021-11-22 23:59:46,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:59:46,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392871544] [2021-11-22 23:59:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:59:46,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:59:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:59:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:59:47,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:59:47,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392871544] [2021-11-22 23:59:47,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392871544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:59:47,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:59:47,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 23:59:47,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195219215] [2021-11-22 23:59:47,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:59:47,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 23:59:47,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:59:47,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 23:59:47,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 23:59:47,451 INFO L87 Difference]: Start difference. First operand has 11769 states, 11733 states have (on average 1.310832694110628) internal successors, (15380), 11752 states have internal predecessors, (15380), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2021-11-22 23:59:47,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:59:47,751 INFO L93 Difference]: Finished difference Result 23515 states and 30786 transitions. [2021-11-22 23:59:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:59:47,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 52 [2021-11-22 23:59:47,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:59:47,801 INFO L225 Difference]: With dead ends: 23515 [2021-11-22 23:59:47,801 INFO L226 Difference]: Without dead ends: 11740 [2021-11-22 23:59:47,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 23:59:47,842 INFO L933 BasicCegarLoop]: 15237 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15237 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:59:47,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15237 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:59:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11740 states. [2021-11-22 23:59:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11740 to 11740. [2021-11-22 23:59:48,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11740 states, 11705 states have (on average 1.2986757795813755) internal successors, (15201), 11723 states have internal predecessors, (15201), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-22 23:59:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11740 states to 11740 states and 15221 transitions. [2021-11-22 23:59:48,108 INFO L78 Accepts]: Start accepts. Automaton has 11740 states and 15221 transitions. Word has length 52 [2021-11-22 23:59:48,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:59:48,108 INFO L470 AbstractCegarLoop]: Abstraction has 11740 states and 15221 transitions. [2021-11-22 23:59:48,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2021-11-22 23:59:48,109 INFO L276 IsEmpty]: Start isEmpty. Operand 11740 states and 15221 transitions. [2021-11-22 23:59:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 23:59:48,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:59:48,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:59:48,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 23:59:48,115 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 23:59:48,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:59:48,117 INFO L85 PathProgramCache]: Analyzing trace with hash -44099199, now seen corresponding path program 1 times [2021-11-22 23:59:48,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:59:48,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162347653] [2021-11-22 23:59:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:59:48,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:59:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:59:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:59:48,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:59:48,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162347653] [2021-11-22 23:59:48,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162347653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:59:48,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:59:48,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:59:48,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830548126] [2021-11-22 23:59:48,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:59:48,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:59:48,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:59:48,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:59:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:59:48,327 INFO L87 Difference]: Start difference. First operand 11740 states and 15221 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-22 23:59:50,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 23:59:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:59:51,194 INFO L93 Difference]: Finished difference Result 35001 states and 45425 transitions. [2021-11-22 23:59:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:59:51,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-22 23:59:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:59:51,279 INFO L225 Difference]: With dead ends: 35001 [2021-11-22 23:59:51,279 INFO L226 Difference]: Without dead ends: 23303 [2021-11-22 23:59:51,307 INFO L932 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 [2021-11-22 23:59:51,308 INFO L933 BasicCegarLoop]: 15228 mSDtfsCounter, 15117 mSDsluCounter, 15115 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15117 SdHoareTripleChecker+Valid, 30343 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:59:51,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15117 Valid, 30343 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-22 23:59:51,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23303 states. [2021-11-22 23:59:51,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23303 to 23303. [2021-11-22 23:59:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23303 states, 23252 states have (on average 1.2991570617581283) internal successors, (30208), 23270 states have internal predecessors, (30208), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-22 23:59:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23303 states to 23303 states and 30248 transitions. [2021-11-22 23:59:51,751 INFO L78 Accepts]: Start accepts. Automaton has 23303 states and 30248 transitions. Word has length 52 [2021-11-22 23:59:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:59:51,753 INFO L470 AbstractCegarLoop]: Abstraction has 23303 states and 30248 transitions. [2021-11-22 23:59:51,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-22 23:59:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 23303 states and 30248 transitions. [2021-11-22 23:59:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 23:59:51,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:59:51,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:59:51,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 23:59:51,756 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 23:59:51,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:59:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1745535771, now seen corresponding path program 1 times [2021-11-22 23:59:51,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:59:51,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947912330] [2021-11-22 23:59:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:59:51,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:59:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:59:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:59:51,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:59:51,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947912330] [2021-11-22 23:59:51,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947912330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:59:51,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:59:51,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 23:59:51,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002625139] [2021-11-22 23:59:51,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:59:51,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:59:51,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:59:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:59:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:59:51,926 INFO L87 Difference]: Start difference. First operand 23303 states and 30248 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2021-11-22 23:59:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:59:52,496 INFO L93 Difference]: Finished difference Result 46514 states and 60398 transitions. [2021-11-22 23:59:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:59:52,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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 54 [2021-11-22 23:59:52,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:59:52,635 INFO L225 Difference]: With dead ends: 46514 [2021-11-22 23:59:52,635 INFO L226 Difference]: Without dead ends: 46480 [2021-11-22 23:59:52,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:59:52,664 INFO L933 BasicCegarLoop]: 15209 mSDtfsCounter, 15141 mSDsluCounter, 15102 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15141 SdHoareTripleChecker+Valid, 30311 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:59:52,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15141 Valid, 30311 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:59:52,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46480 states. [2021-11-22 23:59:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46480 to 46476. [2021-11-22 23:59:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46476 states, 46395 states have (on average 1.2992779394331286) internal successors, (60280), 46411 states have internal predecessors, (60280), 40 states have call successors, (40), 24 states have call predecessors, (40), 24 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-22 23:59:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46476 states to 46476 states and 60360 transitions. [2021-11-22 23:59:53,538 INFO L78 Accepts]: Start accepts. Automaton has 46476 states and 60360 transitions. Word has length 54 [2021-11-22 23:59:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:59:53,539 INFO L470 AbstractCegarLoop]: Abstraction has 46476 states and 60360 transitions. [2021-11-22 23:59:53,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2021-11-22 23:59:53,540 INFO L276 IsEmpty]: Start isEmpty. Operand 46476 states and 60360 transitions. [2021-11-22 23:59:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 23:59:53,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:59:53,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:59:53,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 23:59:53,541 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 23:59:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:59:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1723000531, now seen corresponding path program 1 times [2021-11-22 23:59:53,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:59:53,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734280578] [2021-11-22 23:59:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:59:53,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:59:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:59:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:59:53,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:59:53,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734280578] [2021-11-22 23:59:53,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734280578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:59:53,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:59:53,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 23:59:53,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452355143] [2021-11-22 23:59:53,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:59:53,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:59:53,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:59:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:59:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:59:53,742 INFO L87 Difference]: Start difference. First operand 46476 states and 60360 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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) [2021-11-22 23:59:55,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:59:55,540 INFO L93 Difference]: Finished difference Result 139303 states and 180949 transitions. [2021-11-22 23:59:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:59:55,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2021-11-22 23:59:55,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:59:55,799 INFO L225 Difference]: With dead ends: 139303 [2021-11-22 23:59:55,799 INFO L226 Difference]: Without dead ends: 92869 [2021-11-22 23:59:55,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:59:55,889 INFO L933 BasicCegarLoop]: 15213 mSDtfsCounter, 15144 mSDsluCounter, 15117 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15144 SdHoareTripleChecker+Valid, 30330 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:59:55,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15144 Valid, 30330 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:59:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92869 states. [2021-11-22 23:59:57,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92869 to 92849. [2021-11-22 23:59:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92849 states, 92704 states have (on average 1.2994045564376941) internal successors, (120460), 92720 states have internal predecessors, (120460), 80 states have call successors, (80), 48 states have call predecessors, (80), 48 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-22 23:59:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92849 states to 92849 states and 120620 transitions. [2021-11-22 23:59:58,180 INFO L78 Accepts]: Start accepts. Automaton has 92849 states and 120620 transitions. Word has length 55 [2021-11-22 23:59:58,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:59:58,181 INFO L470 AbstractCegarLoop]: Abstraction has 92849 states and 120620 transitions. [2021-11-22 23:59:58,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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) [2021-11-22 23:59:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 92849 states and 120620 transitions. [2021-11-22 23:59:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 23:59:58,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:59:58,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:59:58,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 23:59:58,185 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 23:59:58,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:59:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1463360191, now seen corresponding path program 1 times [2021-11-22 23:59:58,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:59:58,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425598363] [2021-11-22 23:59:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:59:58,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:59:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:59:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:59:58,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:59:58,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425598363] [2021-11-22 23:59:58,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425598363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:59:58,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:59:58,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 23:59:58,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61318760] [2021-11-22 23:59:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:59:58,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:59:58,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:59:58,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:59:58,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:59:58,412 INFO L87 Difference]: Start difference. First operand 92849 states and 120620 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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) [2021-11-23 00:00:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:00:01,426 INFO L93 Difference]: Finished difference Result 278444 states and 361751 transitions. [2021-11-23 00:00:01,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:00:01,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 65 [2021-11-23 00:00:01,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:00:02,169 INFO L225 Difference]: With dead ends: 278444 [2021-11-23 00:00:02,170 INFO L226 Difference]: Without dead ends: 185634 [2021-11-23 00:00:02,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:00:02,374 INFO L933 BasicCegarLoop]: 15214 mSDtfsCounter, 15136 mSDsluCounter, 15141 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15136 SdHoareTripleChecker+Valid, 30355 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:00:02,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15136 Valid, 30355 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:00:02,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185634 states. [2021-11-23 00:00:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185634 to 185591. [2021-11-23 00:00:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185591 states, 185318 states have (on average 1.299469020818269) internal successors, (240815), 185334 states have internal predecessors, (240815), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-23 00:00:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185591 states to 185591 states and 241135 transitions. [2021-11-23 00:00:07,406 INFO L78 Accepts]: Start accepts. Automaton has 185591 states and 241135 transitions. Word has length 65 [2021-11-23 00:00:07,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:00:07,407 INFO L470 AbstractCegarLoop]: Abstraction has 185591 states and 241135 transitions. [2021-11-23 00:00:07,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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) [2021-11-23 00:00:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 185591 states and 241135 transitions. [2021-11-23 00:00:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 00:00:07,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:00:07,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:00:07,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 00:00:07,409 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 00:00:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:00:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash 764911207, now seen corresponding path program 1 times [2021-11-23 00:00:07,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:00:07,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489745790] [2021-11-23 00:00:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:00:07,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:00:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:00:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:00:07,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:00:07,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489745790] [2021-11-23 00:00:07,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489745790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:00:07,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:00:07,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 00:00:07,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535205061] [2021-11-23 00:00:07,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:00:07,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:00:07,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:00:07,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:00:07,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:00:07,672 INFO L87 Difference]: Start difference. First operand 185591 states and 241135 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-23 00:00:11,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:00:11,483 INFO L93 Difference]: Finished difference Result 371157 states and 482247 transitions. [2021-11-23 00:00:11,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:00:11,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-23 00:00:11,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:00:12,629 INFO L225 Difference]: With dead ends: 371157 [2021-11-23 00:00:12,644 INFO L226 Difference]: Without dead ends: 185594 [2021-11-23 00:00:12,969 INFO L932 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 [2021-11-23 00:00:12,970 INFO L933 BasicCegarLoop]: 15205 mSDtfsCounter, 0 mSDsluCounter, 15193 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30398 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 00:00:12,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30398 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 00:00:13,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185594 states. [2021-11-23 00:00:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185594 to 185594. [2021-11-23 00:00:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185594 states, 185321 states have (on average 1.2994641729755398) internal successors, (240818), 185337 states have internal predecessors, (240818), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-23 00:00:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185594 states to 185594 states and 241138 transitions. [2021-11-23 00:00:17,776 INFO L78 Accepts]: Start accepts. Automaton has 185594 states and 241138 transitions. Word has length 67 [2021-11-23 00:00:17,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:00:17,777 INFO L470 AbstractCegarLoop]: Abstraction has 185594 states and 241138 transitions. [2021-11-23 00:00:17,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-23 00:00:17,777 INFO L276 IsEmpty]: Start isEmpty. Operand 185594 states and 241138 transitions. [2021-11-23 00:00:17,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 00:00:17,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:00:17,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:00:17,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 00:00:17,784 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 00:00:17,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:00:17,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1649935112, now seen corresponding path program 1 times [2021-11-23 00:00:17,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:00:17,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418045071] [2021-11-23 00:00:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:00:17,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:00:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:00:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 00:00:18,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:00:18,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418045071] [2021-11-23 00:00:18,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418045071] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:00:18,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836325235] [2021-11-23 00:00:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:00:18,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:00:18,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:00:18,140 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) [2021-11-23 00:00:18,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 00:00:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:00:22,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 00:00:22,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:00:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 00:00:23,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 00:00:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 00:00:23,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836325235] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 00:00:23,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 00:00:23,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2021-11-23 00:00:23,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189095650] [2021-11-23 00:00:23,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:00:23,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:00:23,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:00:23,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:00:23,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 00:00:23,252 INFO L87 Difference]: Start difference. First operand 185594 states and 241138 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) 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)