./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9738a6698dfc65e1ff903e1e31cda8a1b59d676d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9738a6698dfc65e1ff903e1e31cda8a1b59d676d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:07,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:07,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:07,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:07,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:07,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:07,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:07,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:07,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:07,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:07,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:07,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:07,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:07,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:07,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:07,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:07,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:07,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:07,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:07,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:07,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:07,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:07,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:07,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:07,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:07,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:07,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:07,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:07,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:07,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:07,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:07,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:07,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:07,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:07,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:07,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:07,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:07,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:07,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:07,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:07,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:07,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:07,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:07,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:07,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:07,542 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:07,542 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:07,543 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:07,543 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:07,543 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:07,543 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:07,544 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:07,544 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:07,544 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:07,544 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:07,545 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:07,545 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:07,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:07,546 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:07,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:07,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:07,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:07,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:07,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:07,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:07,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:07,548 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:07,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:07,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:07,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:07,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:07,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:07,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:07,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:07,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:07,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:07,550 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:07,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:07,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:07,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:07,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:07,558 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9738a6698dfc65e1ff903e1e31cda8a1b59d676d [2021-10-11 02:21:07,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:07,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:07,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:07,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:07,844 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:07,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-10-11 02:21:07,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/data/7b8d93f08/713f0b06c0af4e7591e6715e5578eb3e/FLAGaa8d8128d [2021-10-11 02:21:08,429 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:08,430 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-10-11 02:21:08,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/data/7b8d93f08/713f0b06c0af4e7591e6715e5578eb3e/FLAGaa8d8128d [2021-10-11 02:21:08,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/data/7b8d93f08/713f0b06c0af4e7591e6715e5578eb3e [2021-10-11 02:21:08,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:08,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:08,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:08,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:08,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:08,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7f0dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08, skipping insertion in model container [2021-10-11 02:21:08,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:08,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:09,085 WARN L226 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_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2021-10-11 02:21:09,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:09,113 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:09,164 WARN L226 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_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2021-10-11 02:21:09,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:09,180 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:09,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09 WrapperNode [2021-10-11 02:21:09,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:09,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:09,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:09,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:09,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:09,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:09,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:09,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:09,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:09,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:09,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:09,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:09,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:09,574 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-11 02:21:10,172 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-10-11 02:21:10,172 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-10-11 02:21:10,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:10,985 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:21:10,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:10 BoogieIcfgContainer [2021-10-11 02:21:10,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:10,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:10,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:10,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:10,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:08" (1/3) ... [2021-10-11 02:21:10,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795034ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:10, skipping insertion in model container [2021-10-11 02:21:10,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (2/3) ... [2021-10-11 02:21:10,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795034ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:10, skipping insertion in model container [2021-10-11 02:21:10,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:10" (3/3) ... [2021-10-11 02:21:10,999 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2021-10-11 02:21:11,015 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:11,027 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:11,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:21:11,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:11,070 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:11,071 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:11,071 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:11,071 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:11,071 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:11,072 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:11,072 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:11,090 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2021-10-11 02:21:11,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:21:11,098 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:11,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:11,099 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:11,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:11,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1604634911, now seen corresponding path program 1 times [2021-10-11 02:21:11,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:11,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817149498] [2021-10-11 02:21:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:11,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817149498] [2021-10-11 02:21:11,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:11,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:11,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56175326] [2021-10-11 02:21:11,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:11,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:11,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:11,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:11,370 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2021-10-11 02:21:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:11,523 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2021-10-11 02:21:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:11,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 02:21:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:11,536 INFO L225 Difference]: With dead ends: 169 [2021-10-11 02:21:11,537 INFO L226 Difference]: Without dead ends: 83 [2021-10-11 02:21:11,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:11,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-11 02:21:11,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-11 02:21:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-10-11 02:21:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2021-10-11 02:21:11,584 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2021-10-11 02:21:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:11,585 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2021-10-11 02:21:11,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2021-10-11 02:21:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 02:21:11,587 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:11,587 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:21:11,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:11,587 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:11,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:11,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1808081087, now seen corresponding path program 1 times [2021-10-11 02:21:11,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:11,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497207415] [2021-10-11 02:21:11,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:11,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497207415] [2021-10-11 02:21:11,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:11,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:11,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556267588] [2021-10-11 02:21:11,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:11,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:11,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:11,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:11,675 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand 3 states. [2021-10-11 02:21:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:11,838 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2021-10-11 02:21:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:11,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-10-11 02:21:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:11,845 INFO L225 Difference]: With dead ends: 178 [2021-10-11 02:21:11,845 INFO L226 Difference]: Without dead ends: 98 [2021-10-11 02:21:11,847 INFO L677 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 [2021-10-11 02:21:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-11 02:21:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-10-11 02:21:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-10-11 02:21:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2021-10-11 02:21:11,873 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2021-10-11 02:21:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:11,874 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2021-10-11 02:21:11,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2021-10-11 02:21:11,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-11 02:21:11,877 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:11,877 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:21:11,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:21:11,878 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:11,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash -87677632, now seen corresponding path program 1 times [2021-10-11 02:21:11,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:11,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874071933] [2021-10-11 02:21:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:21:12,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874071933] [2021-10-11 02:21:12,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:12,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:12,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216952815] [2021-10-11 02:21:12,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:12,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:12,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:12,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:12,053 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand 3 states. [2021-10-11 02:21:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:12,219 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2021-10-11 02:21:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:12,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2021-10-11 02:21:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:12,224 INFO L225 Difference]: With dead ends: 206 [2021-10-11 02:21:12,224 INFO L226 Difference]: Without dead ends: 113 [2021-10-11 02:21:12,228 INFO L677 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 [2021-10-11 02:21:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-11 02:21:12,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-10-11 02:21:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-10-11 02:21:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2021-10-11 02:21:12,249 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2021-10-11 02:21:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:12,250 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2021-10-11 02:21:12,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:12,250 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2021-10-11 02:21:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-11 02:21:12,252 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:12,253 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:21:12,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:21:12,253 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:12,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1301133537, now seen corresponding path program 1 times [2021-10-11 02:21:12,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:12,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438884589] [2021-10-11 02:21:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:12,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:12,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:12,472 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:21:12,473 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:12,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:21:12,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:12 BoogieIcfgContainer [2021-10-11 02:21:12,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:12,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:12,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:12,594 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:12,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:10" (3/4) ... [2021-10-11 02:21:12,598 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:21:12,600 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:12,603 INFO L168 Benchmark]: Toolchain (without parser) took 3818.95 ms. Allocated memory was 96.5 MB in the beginning and 146.8 MB in the end (delta: 50.3 MB). Free memory was 64.8 MB in the beginning and 70.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:12,604 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:12,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.49 ms. Allocated memory is still 96.5 MB. Free memory was 64.5 MB in the beginning and 68.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:12,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.89 ms. Allocated memory is still 96.5 MB. Free memory was 68.0 MB in the beginning and 65.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:12,610 INFO L168 Benchmark]: Boogie Preprocessor took 53.98 ms. Allocated memory is still 96.5 MB. Free memory was 65.3 MB in the beginning and 63.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:12,612 INFO L168 Benchmark]: RCFGBuilder took 1685.22 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.2 MB in the beginning and 46.6 MB in the end (delta: 16.6 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:12,619 INFO L168 Benchmark]: TraceAbstraction took 1601.53 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 46.6 MB in the beginning and 70.2 MB in the end (delta: -23.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:12,620 INFO L168 Benchmark]: Witness Printer took 6.63 ms. Allocated memory is still 146.8 MB. Free memory is still 70.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:12,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.49 ms. Allocated memory is still 96.5 MB. Free memory was 64.5 MB in the beginning and 68.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.89 ms. Allocated memory is still 96.5 MB. Free memory was 68.0 MB in the beginning and 65.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.98 ms. Allocated memory is still 96.5 MB. Free memory was 65.3 MB in the beginning and 63.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1685.22 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.2 MB in the beginning and 46.6 MB in the end (delta: 16.6 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1601.53 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 46.6 MB in the beginning and 70.2 MB in the end (delta: -23.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.63 ms. Allocated memory is still 146.8 MB. Free memory is still 70.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 616]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 303. Possible FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 = __VERIFIER_nondet_int(); [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect = __VERIFIER_nondet_uint(); [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags = __VERIFIER_nondet_int(); [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 = __VERIFIER_nondet_int(); [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND FALSE !(s__info_callback != 0) [L79] COND FALSE !(s__ctx__info_callback != 0) [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND TRUE \read(s__hit) [L96] ag_Y = 208 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND FALSE !(cb != 0) [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND TRUE \read(s__hit) [L303] s__state = s__state | ag_Y [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L616] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 375 SDtfs, 16 SDslu, 138 SDs, 0 SdLazy, 256 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 15/15 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:15,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:15,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:15,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:15,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:15,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:15,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:15,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:15,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:15,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:15,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:15,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:15,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:15,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:15,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:15,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:15,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:15,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:15,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:15,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:15,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:15,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:15,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:15,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:15,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:15,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:15,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:15,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:15,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:15,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:15,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:15,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:15,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:15,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:15,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:15,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:15,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:15,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:15,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:15,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:15,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:15,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:21:15,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:15,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:15,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:15,201 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:15,201 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:15,202 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:15,202 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:15,202 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:15,202 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:15,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:15,203 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:15,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:15,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:15,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:15,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:15,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:15,204 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:15,204 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:21:15,205 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:21:15,205 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:15,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:15,205 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:15,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:15,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:15,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:21:15,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:15,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:15,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:15,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:15,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:15,207 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:21:15,207 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:21:15,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:15,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:15,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:15,208 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9738a6698dfc65e1ff903e1e31cda8a1b59d676d [2021-10-11 02:21:15,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:15,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:15,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:15,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:15,614 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:15,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-10-11 02:21:15,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/data/20c8ce007/07c25559619f453cb71b1fd29b036c3f/FLAG9900048c7 [2021-10-11 02:21:16,345 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:16,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2021-10-11 02:21:16,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/data/20c8ce007/07c25559619f453cb71b1fd29b036c3f/FLAG9900048c7 [2021-10-11 02:21:16,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/data/20c8ce007/07c25559619f453cb71b1fd29b036c3f [2021-10-11 02:21:16,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:16,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:16,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:16,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:16,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:16,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7883eb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16, skipping insertion in model container [2021-10-11 02:21:16,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:16,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:16,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:16,894 WARN L226 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_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2021-10-11 02:21:16,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:16,913 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:16,967 WARN L226 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_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c[37579,37592] [2021-10-11 02:21:16,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:16,985 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:16,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16 WrapperNode [2021-10-11 02:21:16,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:16,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:16,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:16,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:16,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:17,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:17,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:17,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:17,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:17,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:17,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:17,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:17,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:17,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:17,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:17,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:17,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... [2021-10-11 02:21:17,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:17,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:17,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:17,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:17,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:21:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:17,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:17,379 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-11 02:21:17,883 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-10-11 02:21:17,884 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-10-11 02:21:17,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:17,899 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:21:17,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:17 BoogieIcfgContainer [2021-10-11 02:21:17,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:17,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:17,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:17,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:17,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:16" (1/3) ... [2021-10-11 02:21:17,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289a2861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:17, skipping insertion in model container [2021-10-11 02:21:17,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:16" (2/3) ... [2021-10-11 02:21:17,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289a2861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:17, skipping insertion in model container [2021-10-11 02:21:17,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:17" (3/3) ... [2021-10-11 02:21:17,913 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2021-10-11 02:21:17,926 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:17,930 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:17,940 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:21:17,979 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:17,979 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:17,979 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:17,979 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:17,980 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:17,980 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:17,980 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:17,980 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2021-10-11 02:21:18,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:21:18,016 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:18,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:18,017 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:18,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:18,023 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2021-10-11 02:21:18,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:18,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302872610] [2021-10-11 02:21:18,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:18,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:18,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:18,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:18,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302872610] [2021-10-11 02:21:18,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:18,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:18,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291193180] [2021-10-11 02:21:18,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:18,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:18,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:18,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:18,301 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 3 states. [2021-10-11 02:21:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:18,548 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2021-10-11 02:21:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:18,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-10-11 02:21:18,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:18,563 INFO L225 Difference]: With dead ends: 247 [2021-10-11 02:21:18,563 INFO L226 Difference]: Without dead ends: 113 [2021-10-11 02:21:18,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-11 02:21:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-11 02:21:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-10-11 02:21:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2021-10-11 02:21:18,623 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2021-10-11 02:21:18,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:18,623 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2021-10-11 02:21:18,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2021-10-11 02:21:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-11 02:21:18,627 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:18,627 INFO L422 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] [2021-10-11 02:21:18,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:21:18,846 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:18,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:18,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2021-10-11 02:21:18,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:18,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043268844] [2021-10-11 02:21:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:18,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:18,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:18,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:18,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043268844] [2021-10-11 02:21:18,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:18,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:18,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322333911] [2021-10-11 02:21:18,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:18,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:18,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:18,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:18,997 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand 3 states. [2021-10-11 02:21:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,184 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2021-10-11 02:21:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:19,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2021-10-11 02:21:19,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,187 INFO L225 Difference]: With dead ends: 233 [2021-10-11 02:21:19,187 INFO L226 Difference]: Without dead ends: 131 [2021-10-11 02:21:19,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-11 02:21:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-10-11 02:21:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-10-11 02:21:19,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2021-10-11 02:21:19,199 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2021-10-11 02:21:19,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,200 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2021-10-11 02:21:19,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2021-10-11 02:21:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-11 02:21:19,202 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,203 INFO L422 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] [2021-10-11 02:21:19,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:21:19,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:19,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2021-10-11 02:21:19,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:19,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967497747] [2021-10-11 02:21:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:19,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:21:19,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:19,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967497747] [2021-10-11 02:21:19,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:19,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161143236] [2021-10-11 02:21:19,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:19,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:19,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:19,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:19,559 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand 3 states. [2021-10-11 02:21:19,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,579 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2021-10-11 02:21:19,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:19,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2021-10-11 02:21:19,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,581 INFO L225 Difference]: With dead ends: 271 [2021-10-11 02:21:19,582 INFO L226 Difference]: Without dead ends: 154 [2021-10-11 02:21:19,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:19,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-11 02:21:19,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-11 02:21:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2021-10-11 02:21:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2021-10-11 02:21:19,594 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2021-10-11 02:21:19,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,594 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2021-10-11 02:21:19,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2021-10-11 02:21:19,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-11 02:21:19,596 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,596 INFO L422 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] [2021-10-11 02:21:19,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:21:19,808 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:19,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2021-10-11 02:21:19,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:19,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197167069] [2021-10-11 02:21:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:19,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:21:20,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:20,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197167069] [2021-10-11 02:21:20,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:20,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:20,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138252011] [2021-10-11 02:21:20,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:20,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:20,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:20,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:20,014 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand 3 states. [2021-10-11 02:21:20,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:20,215 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2021-10-11 02:21:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:20,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2021-10-11 02:21:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:20,218 INFO L225 Difference]: With dead ends: 292 [2021-10-11 02:21:20,218 INFO L226 Difference]: Without dead ends: 175 [2021-10-11 02:21:20,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-11 02:21:20,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-10-11 02:21:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2021-10-11 02:21:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2021-10-11 02:21:20,230 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2021-10-11 02:21:20,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:20,230 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2021-10-11 02:21:20,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:20,231 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2021-10-11 02:21:20,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-11 02:21:20,232 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:20,232 INFO L422 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] [2021-10-11 02:21:20,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:21:20,444 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:20,445 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2021-10-11 02:21:20,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:20,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554121404] [2021-10-11 02:21:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:20,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:20,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:21:20,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:21:21,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554121404] [2021-10-11 02:21:21,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [969609607] [2021-10-11 02:21:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:21:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:21,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:21,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:21:21,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:21:21,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319538437] [2021-10-11 02:21:21,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:21,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:21,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:21:21,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:21:21,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:21:21,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-11 02:21:21,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222263164] [2021-10-11 02:21:21,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:21,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:21,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:21,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:21,765 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand 6 states. [2021-10-11 02:21:22,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:22,367 INFO L93 Difference]: Finished difference Result 566 states and 848 transitions. [2021-10-11 02:21:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:21:22,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2021-10-11 02:21:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:22,371 INFO L225 Difference]: With dead ends: 566 [2021-10-11 02:21:22,371 INFO L226 Difference]: Without dead ends: 431 [2021-10-11 02:21:22,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 395 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-10-11 02:21:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2021-10-11 02:21:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2021-10-11 02:21:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 607 transitions. [2021-10-11 02:21:22,399 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 607 transitions. Word has length 68 [2021-10-11 02:21:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:22,399 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 607 transitions. [2021-10-11 02:21:22,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 607 transitions. [2021-10-11 02:21:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-11 02:21:22,403 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:22,403 INFO L422 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] [2021-10-11 02:21:23,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:23,008 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:23,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:23,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2031900493, now seen corresponding path program 1 times [2021-10-11 02:21:23,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:23,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943667315] [2021-10-11 02:21:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:23,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:23,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:21:23,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:23,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943667315] [2021-10-11 02:21:23,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:23,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:23,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376223146] [2021-10-11 02:21:23,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:23,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:23,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:23,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:23,182 INFO L87 Difference]: Start difference. First operand 419 states and 607 transitions. Second operand 3 states. [2021-10-11 02:21:23,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:23,226 INFO L93 Difference]: Finished difference Result 927 states and 1364 transitions. [2021-10-11 02:21:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:23,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2021-10-11 02:21:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:23,231 INFO L225 Difference]: With dead ends: 927 [2021-10-11 02:21:23,231 INFO L226 Difference]: Without dead ends: 574 [2021-10-11 02:21:23,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-10-11 02:21:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2021-10-11 02:21:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2021-10-11 02:21:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 835 transitions. [2021-10-11 02:21:23,263 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 835 transitions. Word has length 68 [2021-10-11 02:21:23,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:23,265 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 835 transitions. [2021-10-11 02:21:23,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:23,266 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 835 transitions. [2021-10-11 02:21:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-11 02:21:23,270 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:23,271 INFO L422 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] [2021-10-11 02:21:23,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:21:23,484 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:23,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:23,485 INFO L82 PathProgramCache]: Analyzing trace with hash -875025075, now seen corresponding path program 1 times [2021-10-11 02:21:23,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:23,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082516281] [2021-10-11 02:21:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:23,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:23,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:21:23,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:23,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082516281] [2021-10-11 02:21:23,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:23,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:23,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093207778] [2021-10-11 02:21:23,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:23,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:23,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:23,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:23,652 INFO L87 Difference]: Start difference. First operand 572 states and 835 transitions. Second operand 3 states. [2021-10-11 02:21:23,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:23,688 INFO L93 Difference]: Finished difference Result 576 states and 837 transitions. [2021-10-11 02:21:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:23,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2021-10-11 02:21:23,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:23,693 INFO L225 Difference]: With dead ends: 576 [2021-10-11 02:21:23,694 INFO L226 Difference]: Without dead ends: 419 [2021-10-11 02:21:23,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-10-11 02:21:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2021-10-11 02:21:23,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2021-10-11 02:21:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 598 transitions. [2021-10-11 02:21:23,711 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 598 transitions. Word has length 68 [2021-10-11 02:21:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:23,713 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 598 transitions. [2021-10-11 02:21:23,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:23,713 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 598 transitions. [2021-10-11 02:21:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-11 02:21:23,715 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:23,715 INFO L422 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] [2021-10-11 02:21:23,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:21:23,931 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:23,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:23,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1614503887, now seen corresponding path program 1 times [2021-10-11 02:21:23,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:23,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085875658] [2021-10-11 02:21:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:24,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:21:24,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:21:24,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:21:24,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085875658] [2021-10-11 02:21:24,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1641087013] [2021-10-11 02:21:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:21:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:24,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:21:24,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:21:24,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:21:24,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094751054] [2021-10-11 02:21:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:24,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:24,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:21:24,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:21:24,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:21:24,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 4, 4] total 14 [2021-10-11 02:21:24,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091261913] [2021-10-11 02:21:24,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 02:21:24,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:24,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 02:21:24,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:21:24,912 INFO L87 Difference]: Start difference. First operand 417 states and 598 transitions. Second operand 14 states. [2021-10-11 02:21:26,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:26,815 INFO L93 Difference]: Finished difference Result 1191 states and 1790 transitions. [2021-10-11 02:21:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-11 02:21:26,815 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2021-10-11 02:21:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:26,821 INFO L225 Difference]: With dead ends: 1191 [2021-10-11 02:21:26,821 INFO L226 Difference]: Without dead ends: 831 [2021-10-11 02:21:26,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:21:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-10-11 02:21:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 554. [2021-10-11 02:21:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2021-10-11 02:21:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 769 transitions. [2021-10-11 02:21:26,846 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 769 transitions. Word has length 68 [2021-10-11 02:21:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:26,847 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 769 transitions. [2021-10-11 02:21:26,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 02:21:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 769 transitions. [2021-10-11 02:21:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-11 02:21:26,848 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:26,848 INFO L422 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] [2021-10-11 02:21:27,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3,12 cvc4 --incremental --print-success --lang smt [2021-10-11 02:21:27,463 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:27,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:27,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1844660206, now seen corresponding path program 1 times [2021-10-11 02:21:27,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:27,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932838547] [2021-10-11 02:21:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:27,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:27,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-11 02:21:27,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:27,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932838547] [2021-10-11 02:21:27,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:27,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:27,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142354383] [2021-10-11 02:21:27,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:27,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:27,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:27,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:27,636 INFO L87 Difference]: Start difference. First operand 554 states and 769 transitions. Second operand 3 states. [2021-10-11 02:21:27,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:27,775 INFO L93 Difference]: Finished difference Result 1090 states and 1537 transitions. [2021-10-11 02:21:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:27,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2021-10-11 02:21:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:27,780 INFO L225 Difference]: With dead ends: 1090 [2021-10-11 02:21:27,780 INFO L226 Difference]: Without dead ends: 602 [2021-10-11 02:21:27,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-11 02:21:27,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 596. [2021-10-11 02:21:27,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2021-10-11 02:21:27,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 821 transitions. [2021-10-11 02:21:27,805 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 821 transitions. Word has length 85 [2021-10-11 02:21:27,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:27,806 INFO L481 AbstractCegarLoop]: Abstraction has 596 states and 821 transitions. [2021-10-11 02:21:27,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:27,806 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 821 transitions. [2021-10-11 02:21:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-11 02:21:27,811 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:27,811 INFO L422 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] [2021-10-11 02:21:28,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2021-10-11 02:21:28,022 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:28,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:28,023 INFO L82 PathProgramCache]: Analyzing trace with hash 2022672797, now seen corresponding path program 1 times [2021-10-11 02:21:28,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:28,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722624813] [2021-10-11 02:21:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:28,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:28,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-11 02:21:28,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:28,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722624813] [2021-10-11 02:21:28,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:28,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:28,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923965195] [2021-10-11 02:21:28,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:28,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:28,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:28,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:28,207 INFO L87 Difference]: Start difference. First operand 596 states and 821 transitions. Second operand 3 states. [2021-10-11 02:21:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:28,282 INFO L93 Difference]: Finished difference Result 1652 states and 2289 transitions. [2021-10-11 02:21:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:28,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2021-10-11 02:21:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:28,290 INFO L225 Difference]: With dead ends: 1652 [2021-10-11 02:21:28,290 INFO L226 Difference]: Without dead ends: 1122 [2021-10-11 02:21:28,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:28,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-10-11 02:21:28,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1118. [2021-10-11 02:21:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1118 states. [2021-10-11 02:21:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1538 transitions. [2021-10-11 02:21:28,349 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1538 transitions. Word has length 104 [2021-10-11 02:21:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:28,350 INFO L481 AbstractCegarLoop]: Abstraction has 1118 states and 1538 transitions. [2021-10-11 02:21:28,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1538 transitions. [2021-10-11 02:21:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-11 02:21:28,352 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:28,353 INFO L422 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] [2021-10-11 02:21:28,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2021-10-11 02:21:28,565 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:28,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1888659291, now seen corresponding path program 1 times [2021-10-11 02:21:28,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:28,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048633082] [2021-10-11 02:21:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:28,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:28,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:29,005 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:21:29,005 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:29,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2021-10-11 02:21:29,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:29 BoogieIcfgContainer [2021-10-11 02:21:29,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:29,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:29,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:29,340 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:29,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:17" (3/4) ... [2021-10-11 02:21:29,342 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:21:29,450 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ecfa6-418b-4d6c-bbf8-d81c52bd8c33/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:29,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:29,452 INFO L168 Benchmark]: Toolchain (without parser) took 12803.44 ms. Allocated memory was 73.4 MB in the beginning and 211.8 MB in the end (delta: 138.4 MB). Free memory was 54.3 MB in the beginning and 101.0 MB in the end (delta: -46.7 MB). Peak memory consumption was 91.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,452 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 55.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:29,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.00 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 39.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.17 ms. Allocated memory is still 73.4 MB. Free memory was 39.2 MB in the beginning and 36.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,454 INFO L168 Benchmark]: Boogie Preprocessor took 76.97 ms. Allocated memory is still 73.4 MB. Free memory was 36.7 MB in the beginning and 55.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,454 INFO L168 Benchmark]: RCFGBuilder took 783.52 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 36.0 MB in the end (delta: 19.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,455 INFO L168 Benchmark]: TraceAbstraction took 11434.20 ms. Allocated memory was 73.4 MB in the beginning and 211.8 MB in the end (delta: 138.4 MB). Free memory was 35.6 MB in the beginning and 113.6 MB in the end (delta: -78.0 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,455 INFO L168 Benchmark]: Witness Printer took 110.66 ms. Allocated memory is still 211.8 MB. Free memory was 113.6 MB in the beginning and 101.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:29,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 55.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.00 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 39.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.17 ms. Allocated memory is still 73.4 MB. Free memory was 39.2 MB in the beginning and 36.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.97 ms. Allocated memory is still 73.4 MB. Free memory was 36.7 MB in the beginning and 55.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 783.52 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 36.0 MB in the end (delta: 19.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11434.20 ms. Allocated memory was 73.4 MB in the beginning and 211.8 MB in the end (delta: 138.4 MB). Free memory was 35.6 MB in the beginning and 113.6 MB in the end (delta: -78.0 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. * Witness Printer took 110.66 ms. Allocated memory is still 211.8 MB. Free memory was 113.6 MB in the beginning and 101.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 616]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 = __VERIFIER_nondet_int(); [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect = __VERIFIER_nondet_uint(); [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags = __VERIFIER_nondet_int(); [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 = __VERIFIER_nondet_int(); [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(\read(s__hit)) [L98] ag_Z = 48 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND FALSE !(\read(s__hit)) [L305] s__state = s__state | ag_Z [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND TRUE s__state == 4400 [L311] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L312] skip = 1 [L326] s__state = 4416 [L327] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND TRUE s__state == 4416 [L331] ret = __VERIFIER_nondet_int() [L332] COND FALSE !(blastFlag == 3) [L337] COND FALSE !(ret <= 0) [L342] s__state = 4432 [L343] s__init_num = 0 [L344] COND FALSE !(! tmp___6) [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L616] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.2s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1821 SDtfs, 2238 SDslu, 2183 SDs, 0 SdLazy, 2056 SolverSat, 386 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1302 GetRequests, 1258 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1118occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 310 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1001 NumberOfCodeBlocks, 1001 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1285 ConstructedInterpolants, 236 QuantifiedInterpolants, 338039 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1883 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 522/824 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! Received shutdown request...