./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/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_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/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 32bit --witnessprinter.graph.data.programhash 0055073c7307bfde271bf0837d5fd91b5b3d33c4e57c477b4203569fc3c90bed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:16,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:16,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:16,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:16,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:16,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:16,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:16,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:16,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:16,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:16,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:16,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:16,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:16,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:16,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:16,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:16,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:16,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:16,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:16,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:16,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:16,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:16,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:16,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:16,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:16,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:16,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:16,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:16,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:16,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:16,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:16,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:16,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:16,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:16,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:16,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:16,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:16,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:16,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:16,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:16,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:16,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:09:16,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:16,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:16,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:16,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:16,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:16,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:16,533 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:16,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:16,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:16,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:16,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:16,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:16,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:09:16,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:16,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:09:16,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:16,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:09:16,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:16,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:09:16,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:16,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:16,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:16,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:16,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:16,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:16,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:09:16,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:09:16,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:09:16,539 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:09:16,539 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:09:16,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:09:16,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:16,540 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_d6e843dd-38ef-485c-8cbb-e7864a16b434/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0055073c7307bfde271bf0837d5fd91b5b3d33c4e57c477b4203569fc3c90bed [2021-11-09 09:09:16,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:16,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:16,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:16,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:16,854 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:16,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c [2021-11-09 09:09:16,932 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/data/dee4e5dd7/1233e43c58e1474ba71cb15bd19130ee/FLAG97dccb7eb [2021-11-09 09:09:17,600 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:17,601 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c [2021-11-09 09:09:17,614 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/data/dee4e5dd7/1233e43c58e1474ba71cb15bd19130ee/FLAG97dccb7eb [2021-11-09 09:09:17,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/data/dee4e5dd7/1233e43c58e1474ba71cb15bd19130ee [2021-11-09 09:09:17,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:17,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:09:17,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:17,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:17,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:17,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:17" (1/1) ... [2021-11-09 09:09:17,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dbf2528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:17, skipping insertion in model container [2021-11-09 09:09:17,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:17" (1/1) ... [2021-11-09 09:09:17,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:17,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:18,235 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_d6e843dd-38ef-485c-8cbb-e7864a16b434/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c[37752,37765] [2021-11-09 09:09:18,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:18,255 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:18,353 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_d6e843dd-38ef-485c-8cbb-e7864a16b434/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c[37752,37765] [2021-11-09 09:09:18,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:18,397 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:18,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18 WrapperNode [2021-11-09 09:09:18,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:18,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:18,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:09:18,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:09:18,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (1/1) ... [2021-11-09 09:09:18,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (1/1) ... [2021-11-09 09:09:18,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:18,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:18,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:18,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:18,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (1/1) ... [2021-11-09 09:09:18,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (1/1) ... [2021-11-09 09:09:18,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (1/1) ... [2021-11-09 09:09:18,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (1/1) ... [2021-11-09 09:09:18,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (1/1) ... [2021-11-09 09:09:18,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (1/1) ... [2021-11-09 09:09:18,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (1/1) ... [2021-11-09 09:09:18,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:18,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:18,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:18,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:18,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (1/1) ... [2021-11-09 09:09:18,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:18,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:18,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:18,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:09:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:09:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:18,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:18,880 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 09:09:19,536 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-11-09 09:09:19,536 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-11-09 09:09:19,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:09:19,573 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-09 09:09:19,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:19 BoogieIcfgContainer [2021-11-09 09:09:19,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:09:19,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:09:19,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:09:19,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:09:19,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:09:17" (1/3) ... [2021-11-09 09:09:19,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd7d7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:19, skipping insertion in model container [2021-11-09 09:09:19,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:18" (2/3) ... [2021-11-09 09:09:19,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd7d7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:19, skipping insertion in model container [2021-11-09 09:09:19,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:19" (3/3) ... [2021-11-09 09:09:19,587 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-2.c [2021-11-09 09:09:19,594 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:09:19,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:09:19,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:09:19,680 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 09:09:19,681 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:09:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 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 09:09:19,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 09:09:19,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:19,710 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 09:09:19,710 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:19,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2021-11-09 09:09:19,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:19,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098672181] [2021-11-09 09:09:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:19,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:19,971 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 09:09:19,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:19,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098672181] [2021-11-09 09:09:19,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098672181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:19,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:19,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:19,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441317288] [2021-11-09 09:09:19,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:19,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:20,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:20,005 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 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 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 09:09:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:20,199 INFO L93 Difference]: Finished difference Result 252 states and 427 transitions. [2021-11-09 09:09:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:20,202 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 09:09:20,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:20,215 INFO L225 Difference]: With dead ends: 252 [2021-11-09 09:09:20,215 INFO L226 Difference]: Without dead ends: 115 [2021-11-09 09:09:20,219 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 09:09:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-09 09:09:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-11-09 09:09:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 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 09:09:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2021-11-09 09:09:20,273 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2021-11-09 09:09:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:20,274 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2021-11-09 09:09:20,275 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 09:09:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2021-11-09 09:09:20,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-09 09:09:20,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:20,278 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:09:20,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:09:20,278 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:20,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2021-11-09 09:09:20,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:20,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075660761] [2021-11-09 09:09:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:20,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:20,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:20,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075660761] [2021-11-09 09:09:20,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075660761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:20,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:20,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:20,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645432252] [2021-11-09 09:09:20,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:20,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:20,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:20,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:20,423 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 09:09:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:20,612 INFO L93 Difference]: Finished difference Result 238 states and 360 transitions. [2021-11-09 09:09:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:20,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 09:09:20,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:20,620 INFO L225 Difference]: With dead ends: 238 [2021-11-09 09:09:20,620 INFO L226 Difference]: Without dead ends: 133 [2021-11-09 09:09:20,623 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 09:09:20,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-09 09:09:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2021-11-09 09:09:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 129 states have internal predecessors, (192), 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 09:09:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2021-11-09 09:09:20,657 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2021-11-09 09:09:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:20,658 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2021-11-09 09:09:20,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 09:09:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2021-11-09 09:09:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 09:09:20,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:20,665 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:20,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:09:20,666 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:20,668 INFO L85 PathProgramCache]: Analyzing trace with hash 356453796, now seen corresponding path program 1 times [2021-11-09 09:09:20,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:20,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031441467] [2021-11-09 09:09:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:20,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:09:20,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:20,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031441467] [2021-11-09 09:09:20,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031441467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:20,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:20,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:20,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531751781] [2021-11-09 09:09:20,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:20,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:20,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:20,790 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 09:09:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:20,927 INFO L93 Difference]: Finished difference Result 272 states and 408 transitions. [2021-11-09 09:09:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 51 [2021-11-09 09:09:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:20,930 INFO L225 Difference]: With dead ends: 272 [2021-11-09 09:09:20,930 INFO L226 Difference]: Without dead ends: 152 [2021-11-09 09:09:20,932 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 09:09:20,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-09 09:09:20,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2021-11-09 09:09:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4657534246575343) internal successors, (214), 146 states have internal predecessors, (214), 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 09:09:20,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2021-11-09 09:09:20,943 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2021-11-09 09:09:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:20,943 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2021-11-09 09:09:20,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 09:09:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2021-11-09 09:09:20,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:09:20,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:20,946 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-09 09:09:20,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:09:20,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:20,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:20,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1238030766, now seen corresponding path program 1 times [2021-11-09 09:09:20,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:20,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478413324] [2021-11-09 09:09:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:20,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-09 09:09:21,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:21,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478413324] [2021-11-09 09:09:21,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478413324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:21,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:21,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:21,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030200135] [2021-11-09 09:09:21,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:21,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:21,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:21,046 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 09:09:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:21,237 INFO L93 Difference]: Finished difference Result 335 states and 503 transitions. [2021-11-09 09:09:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:21,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 68 [2021-11-09 09:09:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:21,241 INFO L225 Difference]: With dead ends: 335 [2021-11-09 09:09:21,242 INFO L226 Difference]: Without dead ends: 197 [2021-11-09 09:09:21,244 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 09:09:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-09 09:09:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2021-11-09 09:09:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.411764705882353) internal successors, (264), 187 states have internal predecessors, (264), 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 09:09:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2021-11-09 09:09:21,256 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 68 [2021-11-09 09:09:21,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:21,257 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2021-11-09 09:09:21,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 09:09:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2021-11-09 09:09:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:09:21,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:21,267 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-09 09:09:21,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:09:21,268 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:21,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1251498196, now seen corresponding path program 1 times [2021-11-09 09:09:21,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:21,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258085576] [2021-11-09 09:09:21,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:21,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-09 09:09:21,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:21,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258085576] [2021-11-09 09:09:21,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258085576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:21,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:21,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:21,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676580894] [2021-11-09 09:09:21,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:21,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:21,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:21,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:21,367 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 09:09:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:21,503 INFO L93 Difference]: Finished difference Result 390 states and 555 transitions. [2021-11-09 09:09:21,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 68 [2021-11-09 09:09:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:21,506 INFO L225 Difference]: With dead ends: 390 [2021-11-09 09:09:21,506 INFO L226 Difference]: Without dead ends: 212 [2021-11-09 09:09:21,507 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 09:09:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-09 09:09:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2021-11-09 09:09:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3980582524271845) internal successors, (288), 206 states have internal predecessors, (288), 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 09:09:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2021-11-09 09:09:21,516 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 68 [2021-11-09 09:09:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:21,517 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2021-11-09 09:09:21,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 09:09:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2021-11-09 09:09:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 09:09:21,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:21,519 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-09 09:09:21,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:09:21,520 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1821092144, now seen corresponding path program 1 times [2021-11-09 09:09:21,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:21,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298253858] [2021-11-09 09:09:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:21,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-09 09:09:21,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:21,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298253858] [2021-11-09 09:09:21,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298253858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:21,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:21,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:21,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509063175] [2021-11-09 09:09:21,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:21,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:21,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:21,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:21,584 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 09:09:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:21,699 INFO L93 Difference]: Finished difference Result 428 states and 604 transitions. [2021-11-09 09:09:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:21,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 85 [2021-11-09 09:09:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:21,711 INFO L225 Difference]: With dead ends: 428 [2021-11-09 09:09:21,711 INFO L226 Difference]: Without dead ends: 231 [2021-11-09 09:09:21,712 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 09:09:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-09 09:09:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2021-11-09 09:09:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3832599118942732) internal successors, (314), 227 states have internal predecessors, (314), 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 09:09:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2021-11-09 09:09:21,726 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 314 transitions. Word has length 85 [2021-11-09 09:09:21,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:21,728 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 314 transitions. [2021-11-09 09:09:21,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 09:09:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 314 transitions. [2021-11-09 09:09:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-09 09:09:21,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:21,731 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-11-09 09:09:21,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:09:21,732 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1901861672, now seen corresponding path program 1 times [2021-11-09 09:09:21,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:21,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329402293] [2021-11-09 09:09:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:21,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-09 09:09:21,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:21,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329402293] [2021-11-09 09:09:21,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329402293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:21,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:21,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:21,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293845831] [2021-11-09 09:09:21,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:21,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:21,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:21,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:21,860 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 09:09:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:21,893 INFO L93 Difference]: Finished difference Result 661 states and 912 transitions. [2021-11-09 09:09:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:21,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 105 [2021-11-09 09:09:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:21,897 INFO L225 Difference]: With dead ends: 661 [2021-11-09 09:09:21,897 INFO L226 Difference]: Without dead ends: 443 [2021-11-09 09:09:21,898 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 09:09:21,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-09 09:09:21,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2021-11-09 09:09:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.3710407239819005) internal successors, (606), 442 states have internal predecessors, (606), 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 09:09:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 606 transitions. [2021-11-09 09:09:21,912 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 606 transitions. Word has length 105 [2021-11-09 09:09:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:21,913 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 606 transitions. [2021-11-09 09:09:21,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 09:09:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 606 transitions. [2021-11-09 09:09:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 09:09:21,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:21,915 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-11-09 09:09:21,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:09:21,916 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 837467901, now seen corresponding path program 1 times [2021-11-09 09:09:21,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:21,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600239364] [2021-11-09 09:09:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:21,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-09 09:09:21,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:21,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600239364] [2021-11-09 09:09:21,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600239364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:21,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:21,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:21,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071635474] [2021-11-09 09:09:21,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:21,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:21,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:21,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:21,975 INFO L87 Difference]: Start difference. First operand 443 states and 606 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 09:09:22,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:22,002 INFO L93 Difference]: Finished difference Result 897 states and 1226 transitions. [2021-11-09 09:09:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:22,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 106 [2021-11-09 09:09:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:22,006 INFO L225 Difference]: With dead ends: 897 [2021-11-09 09:09:22,007 INFO L226 Difference]: Without dead ends: 464 [2021-11-09 09:09:22,008 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 09:09:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-11-09 09:09:22,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2021-11-09 09:09:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.367170626349892) internal successors, (633), 463 states have internal predecessors, (633), 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 09:09:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 633 transitions. [2021-11-09 09:09:22,024 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 633 transitions. Word has length 106 [2021-11-09 09:09:22,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:22,025 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 633 transitions. [2021-11-09 09:09:22,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 09:09:22,025 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 633 transitions. [2021-11-09 09:09:22,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 09:09:22,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:22,028 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-11-09 09:09:22,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:09:22,028 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:22,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:22,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1077707647, now seen corresponding path program 1 times [2021-11-09 09:09:22,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:22,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960240928] [2021-11-09 09:09:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:22,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:22,076 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-09 09:09:22,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:22,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960240928] [2021-11-09 09:09:22,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960240928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:22,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:22,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:22,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156893121] [2021-11-09 09:09:22,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:22,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:22,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:22,081 INFO L87 Difference]: Start difference. First operand 464 states and 633 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:22,108 INFO L93 Difference]: Finished difference Result 945 states and 1287 transitions. [2021-11-09 09:09:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:22,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-09 09:09:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:22,112 INFO L225 Difference]: With dead ends: 945 [2021-11-09 09:09:22,113 INFO L226 Difference]: Without dead ends: 491 [2021-11-09 09:09:22,114 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 09:09:22,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-09 09:09:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2021-11-09 09:09:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.3612244897959183) internal successors, (667), 490 states have internal predecessors, (667), 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 09:09:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 667 transitions. [2021-11-09 09:09:22,141 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 667 transitions. Word has length 106 [2021-11-09 09:09:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:22,141 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 667 transitions. [2021-11-09 09:09:22,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 667 transitions. [2021-11-09 09:09:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 09:09:22,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:22,144 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-11-09 09:09:22,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:09:22,145 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:09:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2015927886, now seen corresponding path program 1 times [2021-11-09 09:09:22,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:22,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147944657] [2021-11-09 09:09:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:22,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:22,208 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:22,323 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:22,323 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 09:09:22,324 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:09:22,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:09:22,331 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:22,335 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:09:22,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:09:22 BoogieIcfgContainer [2021-11-09 09:09:22,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:09:22,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:09:22,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:09:22,480 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:09:22,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:19" (3/4) ... [2021-11-09 09:09:22,483 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-09 09:09:22,612 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:09:22,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:09:22,615 INFO L168 Benchmark]: Toolchain (without parser) took 4707.57 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 85.5 MB in the beginning and 91.1 MB in the end (delta: -5.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:22,615 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 115.3 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:22,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.21 ms. Allocated memory is still 115.3 MB. Free memory was 85.2 MB in the beginning and 85.6 MB in the end (delta: -437.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:22,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.55 ms. Allocated memory is still 115.3 MB. Free memory was 85.6 MB in the beginning and 82.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:22,616 INFO L168 Benchmark]: Boogie Preprocessor took 108.53 ms. Allocated memory is still 115.3 MB. Free memory was 82.4 MB in the beginning and 80.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:22,617 INFO L168 Benchmark]: RCFGBuilder took 951.05 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 80.3 MB in the beginning and 112.8 MB in the end (delta: -32.5 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:22,617 INFO L168 Benchmark]: TraceAbstraction took 2901.20 ms. Allocated memory is still 138.4 MB. Free memory was 112.3 MB in the beginning and 106.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:22,618 INFO L168 Benchmark]: Witness Printer took 132.64 ms. Allocated memory is still 138.4 MB. Free memory was 106.8 MB in the beginning and 91.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:22,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 115.3 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 490.21 ms. Allocated memory is still 115.3 MB. Free memory was 85.2 MB in the beginning and 85.6 MB in the end (delta: -437.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.55 ms. Allocated memory is still 115.3 MB. Free memory was 85.6 MB in the beginning and 82.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 108.53 ms. Allocated memory is still 115.3 MB. Free memory was 82.4 MB in the beginning and 80.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 951.05 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 80.3 MB in the beginning and 112.8 MB in the end (delta: -32.5 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2901.20 ms. Allocated memory is still 138.4 MB. Free memory was 112.3 MB in the beginning and 106.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. * Witness Printer took 132.64 ms. Allocated memory is still 138.4 MB. Free memory was 106.8 MB in the beginning and 91.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 585]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L590] int s ; [L594] s = 12292 [L24] int s__info_callback = __VERIFIER_nondet_int() ; [L25] int s__in_handshake = __VERIFIER_nondet_int() ; [L26] int s__state ; [L27] int s__new_session ; [L28] int s__server ; [L29] int s__version = __VERIFIER_nondet_int() ; [L30] int s__type ; [L31] int s__init_num ; [L32] int s__bbio = __VERIFIER_nondet_int() ; [L33] int s__wbio = __VERIFIER_nondet_int() ; [L34] int s__hit = __VERIFIER_nondet_int() ; [L35] int s__rwstate ; [L36] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L37] int s__debug = __VERIFIER_nondet_int() ; [L38] int s__shutdown ; [L39] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L40] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L41] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L42] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L43] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L44] int s__s3__change_cipher_spec ; [L45] int s__s3__flags = __VERIFIER_nondet_int() ; [L46] int s__s3__delay_buf_pop_ret ; [L47] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L48] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L49] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L50] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L51] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L52] int s__s3__tmp__next_state___0 ; [L53] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L54] int s__session__cipher ; [L55] int s__session__compress_meth ; [L56] int buf ; [L57] unsigned long tmp ; [L58] unsigned long l ; [L59] int num1 = __VERIFIER_nondet_int() ; [L60] int cb ; [L61] int ret ; [L62] int new_state ; [L63] int state ; [L64] int skip ; [L65] int tmp___0 ; [L66] int tmp___1 = __VERIFIER_nondet_int() ; [L67] int tmp___2 = __VERIFIER_nondet_int() ; [L68] int tmp___3 = __VERIFIER_nondet_int() ; [L69] int tmp___4 = __VERIFIER_nondet_int() ; [L70] int tmp___5 = __VERIFIER_nondet_int() ; [L71] int tmp___6 = __VERIFIER_nondet_int() ; [L72] int tmp___7 = __VERIFIER_nondet_int() ; [L73] int tmp___8 = __VERIFIER_nondet_int() ; [L74] int tmp___9 = __VERIFIER_nondet_int() ; [L75] int blastFlag ; [L76] int __cil_tmp55 ; [L77] void *__cil_tmp56 ; [L78] unsigned long __cil_tmp57 ; [L79] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L80] void *__cil_tmp59 ; [L81] unsigned long __cil_tmp60 ; [L82] unsigned long __cil_tmp61 ; [L83] unsigned long __cil_tmp62 ; [L84] unsigned long __cil_tmp63 ; [L85] unsigned long __cil_tmp64 ; [L86] long __cil_tmp65 = __VERIFIER_nondet_long() ; [L87] long __cil_tmp66 ; [L88] long __cil_tmp67 ; [L89] long __cil_tmp68 ; [L90] long __cil_tmp69 ; [L91] long __cil_tmp70 = __VERIFIER_nondet_long() ; [L92] long __cil_tmp71 ; [L93] long __cil_tmp72 ; [L94] long __cil_tmp73 ; [L95] long __cil_tmp74 ; [L99] s__state = initial_state [L100] blastFlag = 0 [L101] tmp = __VERIFIER_nondet_int() [L102] cb = 0 [L103] ret = -1 [L104] skip = 0 [L105] tmp___0 = 0 [L106] COND TRUE s__info_callback != 0 [L107] cb = s__info_callback [L113] s__in_handshake ++ [L114] COND FALSE !(tmp___1 + 12288) [L120] COND TRUE 1 [L122] state = s__state [L123] COND TRUE s__state == 12292 [L225] s__new_session = 1 [L226] s__state = 4096 [L227] s__ctx__stats__sess_connect_renegotiate ++ [L232] s__server = 0 [L233] COND TRUE cb != 0 [L237] __cil_tmp55 = s__version + 65280 [L238] COND FALSE !(__cil_tmp55 != 768) [L243] s__type = 4096 [L245] __cil_tmp56 = (void *)0 [L246] __cil_tmp57 = (unsigned long )__cil_tmp56 [L247] __cil_tmp58 = (unsigned long )s__init_buf___0 [L248] COND FALSE !(__cil_tmp58 == __cil_tmp57) [L266] COND FALSE !(! tmp___4) [L270] COND FALSE !(! tmp___5) [L274] s__state = 4368 [L275] s__ctx__stats__sess_connect ++ [L276] s__init_num = 0 [L557] COND FALSE !(! s__s3__tmp__reuse_message) [L574] skip = 0 [L120] COND TRUE 1 [L122] state = s__state [L123] COND FALSE !(s__state == 12292) [L126] COND FALSE !(s__state == 16384) [L129] COND FALSE !(s__state == 4096) [L132] COND FALSE !(s__state == 20480) [L135] COND FALSE !(s__state == 4099) [L138] COND TRUE s__state == 4368 [L280] s__shutdown = 0 [L281] ret = __VERIFIER_nondet_int() [L282] COND TRUE blastFlag == 0 [L283] blastFlag = 1 [L285] COND FALSE !(ret <= 0) [L288] s__state = 4384 [L289] s__init_num = 0 [L291] __cil_tmp62 = (unsigned long )s__wbio [L292] __cil_tmp63 = (unsigned long )s__bbio [L293] COND TRUE __cil_tmp63 != __cil_tmp62 [L557] COND FALSE !(! s__s3__tmp__reuse_message) [L574] skip = 0 [L120] COND TRUE 1 [L122] state = s__state [L123] COND FALSE !(s__state == 12292) [L126] COND FALSE !(s__state == 16384) [L129] COND FALSE !(s__state == 4096) [L132] COND FALSE !(s__state == 20480) [L135] COND FALSE !(s__state == 4099) [L138] COND FALSE !(s__state == 4368) [L141] COND FALSE !(s__state == 4369) [L144] COND TRUE s__state == 4384 [L300] ret = __VERIFIER_nondet_int() [L301] COND TRUE blastFlag == 1 [L302] blastFlag = 2 [L308] COND FALSE !(ret <= 0) [L311] COND FALSE !(\read(s__hit)) [L314] s__state = 4400 [L316] s__init_num = 0 [L557] COND FALSE !(! s__s3__tmp__reuse_message) [L574] skip = 0 [L120] COND TRUE 1 [L122] state = s__state [L123] COND FALSE !(s__state == 12292) [L126] COND FALSE !(s__state == 16384) [L129] COND FALSE !(s__state == 4096) [L132] COND FALSE !(s__state == 20480) [L135] COND FALSE !(s__state == 4099) [L138] COND FALSE !(s__state == 4368) [L141] COND FALSE !(s__state == 4369) [L144] COND FALSE !(s__state == 4384) [L147] COND FALSE !(s__state == 4385) [L150] COND TRUE s__state == 4400 [L321] __cil_tmp64 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L322] COND FALSE !(__cil_tmp64 + 256UL) [L325] ret = __VERIFIER_nondet_int() [L326] COND TRUE blastFlag == 2 [L327] blastFlag = 3 [L329] COND FALSE !(ret <= 0) [L334] s__state = 4416 [L335] s__init_num = 0 [L557] COND FALSE !(! s__s3__tmp__reuse_message) [L574] skip = 0 [L120] COND TRUE 1 [L122] state = s__state [L123] COND FALSE !(s__state == 12292) [L126] COND FALSE !(s__state == 16384) [L129] COND FALSE !(s__state == 4096) [L132] COND FALSE !(s__state == 20480) [L135] COND FALSE !(s__state == 4099) [L138] COND FALSE !(s__state == 4368) [L141] COND FALSE !(s__state == 4369) [L144] COND FALSE !(s__state == 4384) [L147] COND FALSE !(s__state == 4385) [L150] COND FALSE !(s__state == 4400) [L153] COND FALSE !(s__state == 4401) [L156] COND TRUE s__state == 4416 [L339] ret = __VERIFIER_nondet_int() [L340] COND TRUE blastFlag == 3 [L341] blastFlag = 4 [L343] COND FALSE !(ret <= 0) [L346] s__state = 4432 [L347] s__init_num = 0 [L348] COND FALSE !(! tmp___6) [L557] COND FALSE !(! s__s3__tmp__reuse_message) [L574] skip = 0 [L120] COND TRUE 1 [L122] state = s__state [L123] COND FALSE !(s__state == 12292) [L126] COND FALSE !(s__state == 16384) [L129] COND FALSE !(s__state == 4096) [L132] COND FALSE !(s__state == 20480) [L135] COND FALSE !(s__state == 4099) [L138] COND FALSE !(s__state == 4368) [L141] COND FALSE !(s__state == 4369) [L144] COND FALSE !(s__state == 4384) [L147] COND FALSE !(s__state == 4385) [L150] COND FALSE !(s__state == 4400) [L153] COND FALSE !(s__state == 4401) [L156] COND FALSE !(s__state == 4416) [L159] COND FALSE !(s__state == 4417) [L162] COND TRUE s__state == 4432 [L355] ret = __VERIFIER_nondet_int() [L356] COND TRUE blastFlag == 4 [L585] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1631 SDtfs, 275 SDslu, 970 SDs, 0 SdLazy, 642 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=491occurred in iteration=9, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 757 NumberOfCodeBlocks, 757 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 641 ConstructedInterpolants, 0 QuantifiedInterpolants, 959 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 586/586 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-09 09:09:22,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e843dd-38ef-485c-8cbb-e7864a16b434/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE