./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.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_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/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_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/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_e0d66a1d-24c7-4469-861b-8fa4c455f337/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 fd18c623be1f9191aaeb26a7b3c18eeb579e4f661e34cc28939d56ae6edd64a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:34:50,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:34:50,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:34:50,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:34:50,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:34:50,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:34:50,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:34:50,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:34:50,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:34:50,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:34:50,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:34:50,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:34:50,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:34:50,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:34:50,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:34:50,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:34:50,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:34:50,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:34:50,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:34:50,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:34:50,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:34:50,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:34:50,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:34:50,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:34:50,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:34:50,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:34:50,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:34:50,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:34:50,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:34:50,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:34:50,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:34:50,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:34:50,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:34:50,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:34:50,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:34:50,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:34:50,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:34:50,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:34:50,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:34:50,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:34:50,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:34:50,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 09:34:50,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:34:50,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:34:50,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:34:50,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:34:50,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:34:50,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:34:50,420 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:34:50,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:34:50,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:34:50,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:34:50,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:34:50,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:34:50,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:34:50,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:34:50,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:34:50,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:34:50,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:34:50,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:34:50,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:34:50,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:50,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:34:50,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:34:50,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:34:50,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:34:50,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:34:50,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:34:50,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:34:50,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:34:50,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:34:50,431 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_e0d66a1d-24c7-4469-861b-8fa4c455f337/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd18c623be1f9191aaeb26a7b3c18eeb579e4f661e34cc28939d56ae6edd64a3 [2021-11-09 09:34:50,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:34:50,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:34:50,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:34:50,792 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:34:50,793 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:34:50,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2021-11-09 09:34:50,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/data/c13336cf0/d4a866313ce64b58ac6ecd4d75aa33e8/FLAGe89d6c101 [2021-11-09 09:34:52,160 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:34:52,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2021-11-09 09:34:52,223 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/data/c13336cf0/d4a866313ce64b58ac6ecd4d75aa33e8/FLAGe89d6c101 [2021-11-09 09:34:52,434 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/data/c13336cf0/d4a866313ce64b58ac6ecd4d75aa33e8 [2021-11-09 09:34:52,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:34:52,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:34:52,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:52,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:34:52,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:34:52,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cad8f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52, skipping insertion in model container [2021-11-09 09:34:52,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:34:52,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:34:54,005 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_e0d66a1d-24c7-4469-861b-8fa4c455f337/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i[164502,164515] [2021-11-09 09:34:55,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:55,472 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:34:55,654 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_e0d66a1d-24c7-4469-861b-8fa4c455f337/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i[164502,164515] [2021-11-09 09:34:55,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:56,208 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:34:56,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56 WrapperNode [2021-11-09 09:34:56,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:56,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:34:56,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:34:56,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:34:56,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (1/1) ... [2021-11-09 09:34:56,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (1/1) ... [2021-11-09 09:34:57,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:34:57,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:34:57,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:34:57,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:34:57,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (1/1) ... [2021-11-09 09:34:57,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (1/1) ... [2021-11-09 09:34:57,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (1/1) ... [2021-11-09 09:34:57,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (1/1) ... [2021-11-09 09:34:58,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (1/1) ... [2021-11-09 09:34:58,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (1/1) ... [2021-11-09 09:34:59,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (1/1) ... [2021-11-09 09:34:59,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:34:59,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:34:59,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:34:59,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:34:59,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (1/1) ... [2021-11-09 09:34:59,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:59,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:34:59,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:34:59,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d66a1d-24c7-4469-861b-8fa4c455f337/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:34:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-09 09:34:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-09 09:34:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:34:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 09:34:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:34:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-09 09:34:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:34:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 09:34:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-09 09:34:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-09 09:34:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:34:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:34:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:34:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:34:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:34:59,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:34:59,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:36:29,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:36:29,686 INFO L299 CfgBuilder]: Removed 3578 assume(true) statements. [2021-11-09 09:36:29,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:36:29 BoogieIcfgContainer [2021-11-09 09:36:29,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:36:29,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:36:29,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:36:29,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:36:29,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:34:52" (1/3) ... [2021-11-09 09:36:29,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f332a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:36:29, skipping insertion in model container [2021-11-09 09:36:29,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:56" (2/3) ... [2021-11-09 09:36:29,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f332a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:36:29, skipping insertion in model container [2021-11-09 09:36:29,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:36:29" (3/3) ... [2021-11-09 09:36:29,705 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2021-11-09 09:36:29,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:36:29,712 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:36:29,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:36:29,815 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 09:36:29,816 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:36:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 4082 states, 4080 states have (on average 1.4279411764705883) internal successors, (5826), 4081 states have internal predecessors, (5826), 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 09:36:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-09 09:36:29,937 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:29,938 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] [2021-11-09 09:36:29,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:36:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1722579056, now seen corresponding path program 1 times [2021-11-09 09:36:29,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:29,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582867977] [2021-11-09 09:36:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:29,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:30,929 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 09:36:30,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:30,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582867977] [2021-11-09 09:36:30,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582867977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:30,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:30,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:36:30,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297851458] [2021-11-09 09:36:30,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:36:30,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:30,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:36:30,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:36:30,979 INFO L87 Difference]: Start difference. First operand has 4082 states, 4080 states have (on average 1.4279411764705883) internal successors, (5826), 4081 states have internal predecessors, (5826), 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) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 09:36:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:33,668 INFO L93 Difference]: Finished difference Result 12063 states and 17238 transitions. [2021-11-09 09:36:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:36:33,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-11-09 09:36:33,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:33,755 INFO L225 Difference]: With dead ends: 12063 [2021-11-09 09:36:33,756 INFO L226 Difference]: Without dead ends: 7950 [2021-11-09 09:36:33,780 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 09:36:33,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7950 states. [2021-11-09 09:36:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7950 to 7950. [2021-11-09 09:36:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7950 states, 7949 states have (on average 1.3960246571895836) internal successors, (11097), 7949 states have internal predecessors, (11097), 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 09:36:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7950 states to 7950 states and 11097 transitions. [2021-11-09 09:36:34,531 INFO L78 Accepts]: Start accepts. Automaton has 7950 states and 11097 transitions. Word has length 29 [2021-11-09 09:36:34,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:34,532 INFO L470 AbstractCegarLoop]: Abstraction has 7950 states and 11097 transitions. [2021-11-09 09:36:34,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 09:36:34,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7950 states and 11097 transitions. [2021-11-09 09:36:34,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-09 09:36:34,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:34,542 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] [2021-11-09 09:36:34,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:36:34,544 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:36:34,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:34,547 INFO L85 PathProgramCache]: Analyzing trace with hash 680382544, now seen corresponding path program 1 times [2021-11-09 09:36:34,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:34,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471827964] [2021-11-09 09:36:34,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:34,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:34,996 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 09:36:34,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:34,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471827964] [2021-11-09 09:36:34,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471827964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:34,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:34,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:36:34,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591254366] [2021-11-09 09:36:35,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:36:35,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:35,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:36:35,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:36:35,003 INFO L87 Difference]: Start difference. First operand 7950 states and 11097 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 09:36:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:36,199 INFO L93 Difference]: Finished difference Result 23734 states and 33164 transitions. [2021-11-09 09:36:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:36:36,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 32 [2021-11-09 09:36:36,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:36,308 INFO L225 Difference]: With dead ends: 23734 [2021-11-09 09:36:36,308 INFO L226 Difference]: Without dead ends: 15836 [2021-11-09 09:36:36,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:36:36,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15836 states. [2021-11-09 09:36:36,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15836 to 15740. [2021-11-09 09:36:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15740 states, 15739 states have (on average 1.3973568841730732) internal successors, (21993), 15739 states have internal predecessors, (21993), 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 09:36:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15740 states to 15740 states and 21993 transitions. [2021-11-09 09:36:36,989 INFO L78 Accepts]: Start accepts. Automaton has 15740 states and 21993 transitions. Word has length 32 [2021-11-09 09:36:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:36,991 INFO L470 AbstractCegarLoop]: Abstraction has 15740 states and 21993 transitions. [2021-11-09 09:36:36,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 09:36:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 15740 states and 21993 transitions. [2021-11-09 09:36:37,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-09 09:36:37,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:37,021 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:37,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:36:37,023 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:36:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:37,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1708768980, now seen corresponding path program 1 times [2021-11-09 09:36:37,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:37,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868426605] [2021-11-09 09:36:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:37,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:36:37,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:37,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868426605] [2021-11-09 09:36:37,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868426605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:37,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:37,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:36:37,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822709122] [2021-11-09 09:36:37,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:36:37,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:37,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:36:37,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:36:37,497 INFO L87 Difference]: Start difference. First operand 15740 states and 21993 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 09:36:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:38,466 INFO L93 Difference]: Finished difference Result 44306 states and 61917 transitions. [2021-11-09 09:36:38,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:36:38,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 117 [2021-11-09 09:36:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:38,574 INFO L225 Difference]: With dead ends: 44306 [2021-11-09 09:36:38,575 INFO L226 Difference]: Without dead ends: 28623 [2021-11-09 09:36:38,613 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 09:36:38,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28623 states. [2021-11-09 09:36:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28623 to 27508. [2021-11-09 09:36:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27508 states, 27507 states have (on average 1.3987712218707966) internal successors, (38476), 27507 states have internal predecessors, (38476), 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 09:36:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27508 states to 27508 states and 38476 transitions. [2021-11-09 09:36:39,520 INFO L78 Accepts]: Start accepts. Automaton has 27508 states and 38476 transitions. Word has length 117 [2021-11-09 09:36:39,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:39,521 INFO L470 AbstractCegarLoop]: Abstraction has 27508 states and 38476 transitions. [2021-11-09 09:36:39,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 09:36:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand 27508 states and 38476 transitions. [2021-11-09 09:36:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-09 09:36:39,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:39,547 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:39,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:36:39,547 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:36:39,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:39,548 INFO L85 PathProgramCache]: Analyzing trace with hash 410986585, now seen corresponding path program 1 times [2021-11-09 09:36:39,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:39,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299520707] [2021-11-09 09:36:39,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:39,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:36:39,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:39,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299520707] [2021-11-09 09:36:39,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299520707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:39,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:39,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:36:39,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447474946] [2021-11-09 09:36:39,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:36:39,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:39,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:36:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:36:39,975 INFO L87 Difference]: Start difference. First operand 27508 states and 38476 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 09:36:41,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:41,924 INFO L93 Difference]: Finished difference Result 76250 states and 106840 transitions. [2021-11-09 09:36:41,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:36:41,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 125 [2021-11-09 09:36:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:42,101 INFO L225 Difference]: With dead ends: 76250 [2021-11-09 09:36:42,102 INFO L226 Difference]: Without dead ends: 48799 [2021-11-09 09:36:42,162 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 09:36:42,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48799 states. [2021-11-09 09:36:43,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48799 to 48640. [2021-11-09 09:36:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48640 states, 48639 states have (on average 1.4030716092024917) internal successors, (68244), 48639 states have internal predecessors, (68244), 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 09:36:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48640 states to 48640 states and 68244 transitions. [2021-11-09 09:36:43,999 INFO L78 Accepts]: Start accepts. Automaton has 48640 states and 68244 transitions. Word has length 125 [2021-11-09 09:36:44,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:44,000 INFO L470 AbstractCegarLoop]: Abstraction has 48640 states and 68244 transitions. [2021-11-09 09:36:44,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 09:36:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 48640 states and 68244 transitions. [2021-11-09 09:36:44,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-09 09:36:44,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:44,048 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:36:44,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:36:44,048 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:36:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash -491023878, now seen corresponding path program 1 times [2021-11-09 09:36:44,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:44,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083113841] [2021-11-09 09:36:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:44,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:36:44,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:44,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083113841] [2021-11-09 09:36:44,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083113841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:44,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:44,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:36:44,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885910557] [2021-11-09 09:36:44,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:36:44,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:36:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:36:44,597 INFO L87 Difference]: Start difference. First operand 48640 states and 68244 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 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 09:36:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:48,646 INFO L93 Difference]: Finished difference Result 207772 states and 291264 transitions. [2021-11-09 09:36:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:36:48,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 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 144 [2021-11-09 09:36:48,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:49,277 INFO L225 Difference]: With dead ends: 207772 [2021-11-09 09:36:49,277 INFO L226 Difference]: Without dead ends: 159189 [2021-11-09 09:36:49,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:36:49,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159189 states. [2021-11-09 09:36:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159189 to 81464. [2021-11-09 09:36:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81464 states, 81463 states have (on average 1.401691565495992) internal successors, (114186), 81463 states have internal predecessors, (114186), 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 09:36:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81464 states to 81464 states and 114186 transitions. [2021-11-09 09:36:53,004 INFO L78 Accepts]: Start accepts. Automaton has 81464 states and 114186 transitions. Word has length 144 [2021-11-09 09:36:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:53,005 INFO L470 AbstractCegarLoop]: Abstraction has 81464 states and 114186 transitions. [2021-11-09 09:36:53,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 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 09:36:53,005 INFO L276 IsEmpty]: Start isEmpty. Operand 81464 states and 114186 transitions. [2021-11-09 09:36:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-09 09:36:53,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:53,076 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:36:53,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:36:53,076 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:36:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1969985934, now seen corresponding path program 1 times [2021-11-09 09:36:53,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:53,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699605459] [2021-11-09 09:36:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:53,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:36:53,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:53,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699605459] [2021-11-09 09:36:53,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699605459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:53,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:53,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:36:53,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977556983] [2021-11-09 09:36:53,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:36:53,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:53,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:36:53,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:36:53,501 INFO L87 Difference]: Start difference. First operand 81464 states and 114186 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 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 09:37:01,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:01,460 INFO L93 Difference]: Finished difference Result 371876 states and 520974 transitions. [2021-11-09 09:37:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:37:01,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 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 145 [2021-11-09 09:37:01,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:02,251 INFO L225 Difference]: With dead ends: 371876 [2021-11-09 09:37:02,251 INFO L226 Difference]: Without dead ends: 290469 [2021-11-09 09:37:02,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:37:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290469 states. [2021-11-09 09:37:09,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290469 to 158960. [2021-11-09 09:37:09,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158960 states, 158959 states have (on average 1.4012040840719935) internal successors, (222734), 158959 states have internal predecessors, (222734), 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 09:37:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158960 states to 158960 states and 222734 transitions. [2021-11-09 09:37:09,660 INFO L78 Accepts]: Start accepts. Automaton has 158960 states and 222734 transitions. Word has length 145 [2021-11-09 09:37:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:09,660 INFO L470 AbstractCegarLoop]: Abstraction has 158960 states and 222734 transitions. [2021-11-09 09:37:09,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 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 09:37:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 158960 states and 222734 transitions. [2021-11-09 09:37:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-09 09:37:09,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:09,711 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:37:09,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:37:09,711 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:37:09,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash 951241694, now seen corresponding path program 1 times [2021-11-09 09:37:09,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:09,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263956173] [2021-11-09 09:37:09,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:09,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:37:10,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:10,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263956173] [2021-11-09 09:37:10,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263956173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:10,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:10,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:37:10,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082872933] [2021-11-09 09:37:10,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:37:10,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:37:10,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:37:10,068 INFO L87 Difference]: Start difference. First operand 158960 states and 222734 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 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)