./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX --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 e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:40:40,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:40:40,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:40:40,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:40:40,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:40:40,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:40:40,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:40:40,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:40:40,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:40:40,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:40:40,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:40:40,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:40:40,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:40:40,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:40:40,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:40:40,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:40:40,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:40:40,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:40:40,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:40:40,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:40:40,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:40:40,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:40:40,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:40:40,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:40:40,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:40:40,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:40:40,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:40:40,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:40:40,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:40:40,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:40:40,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:40:40,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:40:40,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:40:40,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:40:40,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:40:40,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:40:40,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:40:40,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:40:40,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:40:40,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:40:40,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:40:40,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 10:40:40,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:40:40,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:40:40,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:40:40,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:40:40,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:40:40,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:40:40,274 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:40:40,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:40:40,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:40:40,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:40:40,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:40:40,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:40:40,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:40:40,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:40:40,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:40:40,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:40:40,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:40:40,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:40:40,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:40:40,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:40:40,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:40:40,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:40:40,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:40:40,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:40:40,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:40:40,280 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:40:40,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:40:40,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:40:40,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:40:40,280 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2021-11-09 10:40:40,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:40:40,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:40:40,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:40:40,655 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:40:40,656 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:40:40,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-11-09 10:40:40,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/data/868ad7479/91873eefab1f4bb0bf3ed23201c8a3e9/FLAG245fe67c0 [2021-11-09 10:40:41,569 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:40:41,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-11-09 10:40:41,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/data/868ad7479/91873eefab1f4bb0bf3ed23201c8a3e9/FLAG245fe67c0 [2021-11-09 10:40:42,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/data/868ad7479/91873eefab1f4bb0bf3ed23201c8a3e9 [2021-11-09 10:40:42,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:40:42,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:40:42,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:40:42,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:40:42,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:40:42,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:42" (1/1) ... [2021-11-09 10:40:42,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342747a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:42, skipping insertion in model container [2021-11-09 10:40:42,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:42" (1/1) ... [2021-11-09 10:40:42,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:40:42,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:40:43,112 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-11-09 10:40:43,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:40:43,993 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:40:44,105 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-11-09 10:40:44,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:40:44,392 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:40:44,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44 WrapperNode [2021-11-09 10:40:44,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:40:44,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:40:44,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:40:44,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:40:44,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (1/1) ... [2021-11-09 10:40:44,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (1/1) ... [2021-11-09 10:40:46,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:40:46,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:40:46,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:40:46,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:40:46,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (1/1) ... [2021-11-09 10:40:46,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (1/1) ... [2021-11-09 10:40:46,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (1/1) ... [2021-11-09 10:40:46,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (1/1) ... [2021-11-09 10:40:48,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (1/1) ... [2021-11-09 10:40:48,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (1/1) ... [2021-11-09 10:40:48,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (1/1) ... [2021-11-09 10:40:49,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:40:49,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:40:49,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:40:49,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:40:49,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (1/1) ... [2021-11-09 10:40:49,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:40:49,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:49,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:49,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f878ec4b-75d2-4dc3-b48e-5fac7f633197/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:40:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-09 10:40:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-09 10:40:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-09 10:40:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-09 10:40:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:40:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:40:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:40:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 10:40:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-09 10:40:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-09 10:40:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 10:40:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-09 10:40:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-09 10:40:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 10:40:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-09 10:40:49,256 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-09 10:40:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:40:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 10:40:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-09 10:40:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:40:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-09 10:40:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-09 10:40:49,257 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-09 10:40:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-09 10:40:49,257 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-09 10:40:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-09 10:40:49,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-09 10:40:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:40:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:40:49,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:41:56,679 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:41:56,680 INFO L299 CfgBuilder]: Removed 14253 assume(true) statements. [2021-11-09 10:41:56,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:41:56 BoogieIcfgContainer [2021-11-09 10:41:56,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:41:56,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:41:56,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:41:56,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:41:56,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:40:42" (1/3) ... [2021-11-09 10:41:56,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78edb865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:41:56, skipping insertion in model container [2021-11-09 10:41:56,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:44" (2/3) ... [2021-11-09 10:41:56,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78edb865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:41:56, skipping insertion in model container [2021-11-09 10:41:56,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:41:56" (3/3) ... [2021-11-09 10:41:56,708 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-11-09 10:41:56,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:41:56,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-09 10:41:56,893 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:41:56,900 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 [2021-11-09 10:41:56,901 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-09 10:41:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 11954 states, 11918 states have (on average 1.4186105051183084) internal successors, (16907), 11937 states have internal predecessors, (16907), 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) [2021-11-09 10:41:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 10:41:57,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:57,139 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] [2021-11-09 10:41:57,139 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)] === [2021-11-09 10:41:57,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:57,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1301554369, now seen corresponding path program 1 times [2021-11-09 10:41:57,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:41:57,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723728220] [2021-11-09 10:41:57,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:57,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:41:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:58,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:41:58,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723728220] [2021-11-09 10:41:58,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723728220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:41:58,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:41:58,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:41:58,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142540107] [2021-11-09 10:41:58,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:41:58,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:41:58,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:41:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:41:58,274 INFO L87 Difference]: Start difference. First operand has 11954 states, 11918 states have (on average 1.4186105051183084) internal successors, (16907), 11937 states have internal predecessors, (16907), 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 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:01,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:01,762 INFO L93 Difference]: Finished difference Result 31641 states and 44017 transitions. [2021-11-09 10:42:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-09 10:42:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:01,936 INFO L225 Difference]: With dead ends: 31641 [2021-11-09 10:42:01,937 INFO L226 Difference]: Without dead ends: 19678 [2021-11-09 10:42:02,016 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 [2021-11-09 10:42:02,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19678 states. [2021-11-09 10:42:02,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19678 to 19678. [2021-11-09 10:42:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19678 states, 19627 states have (on average 1.3569572527640494) internal successors, (26633), 19645 states have internal predecessors, (26633), 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) [2021-11-09 10:42:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19678 states to 19678 states and 26673 transitions. [2021-11-09 10:42:02,976 INFO L78 Accepts]: Start accepts. Automaton has 19678 states and 26673 transitions. Word has length 24 [2021-11-09 10:42:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:02,977 INFO L470 AbstractCegarLoop]: Abstraction has 19678 states and 26673 transitions. [2021-11-09 10:42:02,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 19678 states and 26673 transitions. [2021-11-09 10:42:02,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-09 10:42:02,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:02,981 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] [2021-11-09 10:42:02,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:42:02,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 10:42:02,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:02,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1536576598, now seen corresponding path program 1 times [2021-11-09 10:42:02,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:02,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672944719] [2021-11-09 10:42:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:02,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:03,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:03,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672944719] [2021-11-09 10:42:03,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672944719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:03,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:03,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:42:03,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884514868] [2021-11-09 10:42:03,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:03,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:03,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:03,277 INFO L87 Difference]: Start difference. First operand 19678 states and 26673 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-11-09 10:42:04,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:04,383 INFO L93 Difference]: Finished difference Result 39256 states and 53239 transitions. [2021-11-09 10:42:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2021-11-09 10:42:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:04,739 INFO L225 Difference]: With dead ends: 39256 [2021-11-09 10:42:04,739 INFO L226 Difference]: Without dead ends: 39224 [2021-11-09 10:42:04,755 INFO L786 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 [2021-11-09 10:42:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39224 states. [2021-11-09 10:42:05,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39224 to 39220. [2021-11-09 10:42:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39220 states, 39139 states have (on average 1.357290681928511) internal successors, (53123), 39155 states have internal predecessors, (53123), 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) [2021-11-09 10:42:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39220 states to 39220 states and 53203 transitions. [2021-11-09 10:42:06,330 INFO L78 Accepts]: Start accepts. Automaton has 39220 states and 53203 transitions. Word has length 27 [2021-11-09 10:42:06,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:06,331 INFO L470 AbstractCegarLoop]: Abstraction has 39220 states and 53203 transitions. [2021-11-09 10:42:06,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-11-09 10:42:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 39220 states and 53203 transitions. [2021-11-09 10:42:06,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-09 10:42:06,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:06,335 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] [2021-11-09 10:42:06,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:42:06,336 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 10:42:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:06,337 INFO L85 PathProgramCache]: Analyzing trace with hash 389265743, now seen corresponding path program 1 times [2021-11-09 10:42:06,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:06,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886594789] [2021-11-09 10:42:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:06,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:06,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:06,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886594789] [2021-11-09 10:42:06,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886594789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:06,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:06,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:42:06,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513531581] [2021-11-09 10:42:06,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:06,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:06,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:06,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:06,609 INFO L87 Difference]: Start difference. First operand 39220 states and 53203 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:09,020 INFO L93 Difference]: Finished difference Result 117512 states and 159453 transitions. [2021-11-09 10:42:09,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:09,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-09 10:42:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:09,445 INFO L225 Difference]: With dead ends: 117512 [2021-11-09 10:42:09,446 INFO L226 Difference]: Without dead ends: 78349 [2021-11-09 10:42:09,554 INFO L786 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 [2021-11-09 10:42:09,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78349 states. [2021-11-09 10:42:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78349 to 78329. [2021-11-09 10:42:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78329 states, 78184 states have (on average 1.357528394556431) internal successors, (106137), 78200 states have internal predecessors, (106137), 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) [2021-11-09 10:42:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78329 states to 78329 states and 106297 transitions. [2021-11-09 10:42:12,808 INFO L78 Accepts]: Start accepts. Automaton has 78329 states and 106297 transitions. Word has length 28 [2021-11-09 10:42:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:12,809 INFO L470 AbstractCegarLoop]: Abstraction has 78329 states and 106297 transitions. [2021-11-09 10:42:12,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 78329 states and 106297 transitions. [2021-11-09 10:42:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-09 10:42:12,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:12,815 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] [2021-11-09 10:42:12,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:42:12,816 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 10:42:12,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:12,817 INFO L85 PathProgramCache]: Analyzing trace with hash -513397760, now seen corresponding path program 1 times [2021-11-09 10:42:12,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:12,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730563946] [2021-11-09 10:42:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:12,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:13,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:13,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730563946] [2021-11-09 10:42:13,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730563946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:13,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:13,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:42:13,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892213024] [2021-11-09 10:42:13,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:13,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:13,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:13,209 INFO L87 Difference]: Start difference. First operand 78329 states and 106297 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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) [2021-11-09 10:42:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:17,102 INFO L93 Difference]: Finished difference Result 234856 states and 318752 transitions. [2021-11-09 10:42:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:17,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2021-11-09 10:42:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:18,244 INFO L225 Difference]: With dead ends: 234856 [2021-11-09 10:42:18,252 INFO L226 Difference]: Without dead ends: 156582 [2021-11-09 10:42:18,395 INFO L786 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 [2021-11-09 10:42:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156582 states. [2021-11-09 10:42:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156582 to 156545. [2021-11-09 10:42:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156545 states, 156272 states have (on average 1.3576456434933961) internal successors, (212162), 156288 states have internal predecessors, (212162), 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) [2021-11-09 10:42:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156545 states to 156545 states and 212482 transitions. [2021-11-09 10:42:23,477 INFO L78 Accepts]: Start accepts. Automaton has 156545 states and 212482 transitions. Word has length 37 [2021-11-09 10:42:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:23,477 INFO L470 AbstractCegarLoop]: Abstraction has 156545 states and 212482 transitions. [2021-11-09 10:42:23,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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) [2021-11-09 10:42:23,478 INFO L276 IsEmpty]: Start isEmpty. Operand 156545 states and 212482 transitions. [2021-11-09 10:42:23,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-09 10:42:23,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:23,481 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] [2021-11-09 10:42:23,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:42:23,482 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-09 10:42:23,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:23,483 INFO L85 PathProgramCache]: Analyzing trace with hash 666285678, now seen corresponding path program 1 times [2021-11-09 10:42:23,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:23,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126612352] [2021-11-09 10:42:23,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:23,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:25,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:25,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126612352] [2021-11-09 10:42:25,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126612352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:25,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:25,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 10:42:25,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175293215] [2021-11-09 10:42:25,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:42:25,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:25,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:42:25,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:42:25,027 INFO L87 Difference]: Start difference. First operand 156545 states and 212482 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)