./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8 --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 b0b2d978b2f3873db9b988022a041d2d18a2f859 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8 --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 b0b2d978b2f3873db9b988022a041d2d18a2f859 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:23:51,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:23:51,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:23:51,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:23:51,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:23:51,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:23:51,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:23:51,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:23:51,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:23:51,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:23:51,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:23:51,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:23:51,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:23:51,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:23:51,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:23:51,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:23:51,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:23:51,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:23:51,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:23:52,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:23:52,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:23:52,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:23:52,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:23:52,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:23:52,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:23:52,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:23:52,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:23:52,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:23:52,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:23:52,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:23:52,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:23:52,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:23:52,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:23:52,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:23:52,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:23:52,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:23:52,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:23:52,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:23:52,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:23:52,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:23:52,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:23:52,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:23:52,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:23:52,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:23:52,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:23:52,090 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:23:52,090 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:23:52,091 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:23:52,091 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:23:52,091 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:23:52,091 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:23:52,092 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:23:52,093 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:23:52,093 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:23:52,093 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:23:52,094 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:23:52,094 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:23:52,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:23:52,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:23:52,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:23:52,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:23:52,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:23:52,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:23:52,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:23:52,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:23:52,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:23:52,097 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:23:52,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:23:52,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:23:52,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:23:52,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:23:52,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:23:52,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:52,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:23:52,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:23:52,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:23:52,101 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:23:52,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:23:52,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:23:52,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:23:52,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:23:52,102 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_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b2d978b2f3873db9b988022a041d2d18a2f859 [2021-10-13 07:23:52,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:23:52,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:23:52,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:23:52,419 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:23:52,420 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:23:52,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2021-10-13 07:23:52,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/data/db8a4f9f0/43d4d7415a2d4d0498a2d1239e6ed9d2/FLAGf8442cba8 [2021-10-13 07:23:53,056 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:23:53,056 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2021-10-13 07:23:53,089 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/data/db8a4f9f0/43d4d7415a2d4d0498a2d1239e6ed9d2/FLAGf8442cba8 [2021-10-13 07:23:53,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/data/db8a4f9f0/43d4d7415a2d4d0498a2d1239e6ed9d2 [2021-10-13 07:23:53,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:23:53,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:23:53,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:53,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:23:53,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:23:53,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:53,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e7420fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53, skipping insertion in model container [2021-10-13 07:23:53,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:53,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:23:53,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:23:53,791 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c[44644,44657] [2021-10-13 07:23:53,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:53,818 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:23:53,903 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c[44644,44657] [2021-10-13 07:23:53,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:53,933 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:23:53,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53 WrapperNode [2021-10-13 07:23:53,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:53,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:53,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:23:53,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:23:53,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:53,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:53,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:54,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:23:54,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:23:54,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:23:54,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:23:54,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:23:54,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:23:54,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:23:54,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:54,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:54,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:23:54,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:23:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:23:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:23:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:23:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:23:54,298 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:23:54,910 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:23:54,910 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:23:55,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:23:55,305 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:23:55,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:55 BoogieIcfgContainer [2021-10-13 07:23:55,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:23:55,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:23:55,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:23:55,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:23:55,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:23:53" (1/3) ... [2021-10-13 07:23:55,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a2a791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:55, skipping insertion in model container [2021-10-13 07:23:55,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (2/3) ... [2021-10-13 07:23:55,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a2a791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:55, skipping insertion in model container [2021-10-13 07:23:55,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:55" (3/3) ... [2021-10-13 07:23:55,324 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.BV.c.cil.c [2021-10-13 07:23:55,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:23:55,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:23:55,394 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:23:55,400 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:23:55,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:23:55,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 103 states have (on average 1.7766990291262137) internal successors, (183), 104 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 07:23:55,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:55,452 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:55,452 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:55,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:55,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1632319463, now seen corresponding path program 1 times [2021-10-13 07:23:55,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:55,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127881403] [2021-10-13 07:23:55,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:55,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:55,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:55,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127881403] [2021-10-13 07:23:55,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127881403] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:55,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:55,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:23:55,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789236700] [2021-10-13 07:23:55,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:55,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:55,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:55,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:55,695 INFO L87 Difference]: Start difference. First operand has 105 states, 103 states have (on average 1.7766990291262137) internal successors, (183), 104 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:55,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:55,865 INFO L93 Difference]: Finished difference Result 229 states and 398 transitions. [2021-10-13 07:23:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:55,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 07:23:55,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:55,878 INFO L225 Difference]: With dead ends: 229 [2021-10-13 07:23:55,878 INFO L226 Difference]: Without dead ends: 120 [2021-10-13 07:23:55,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-13 07:23:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-10-13 07:23:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.4871794871794872) internal successors, (174), 117 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 174 transitions. [2021-10-13 07:23:55,924 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 174 transitions. Word has length 39 [2021-10-13 07:23:55,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:55,924 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 174 transitions. [2021-10-13 07:23:55,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 174 transitions. [2021-10-13 07:23:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 07:23:55,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:55,928 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1] [2021-10-13 07:23:55,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:23:55,928 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:55,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:55,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1623448682, now seen corresponding path program 1 times [2021-10-13 07:23:55,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:55,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95155609] [2021-10-13 07:23:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:55,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:56,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:56,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95155609] [2021-10-13 07:23:56,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95155609] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:56,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:56,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:56,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446602138] [2021-10-13 07:23:56,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:56,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:56,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:56,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:56,009 INFO L87 Difference]: Start difference. First operand 118 states and 174 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:56,149 INFO L93 Difference]: Finished difference Result 255 states and 382 transitions. [2021-10-13 07:23:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:56,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-13 07:23:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:56,152 INFO L225 Difference]: With dead ends: 255 [2021-10-13 07:23:56,152 INFO L226 Difference]: Without dead ends: 139 [2021-10-13 07:23:56,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-13 07:23:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2021-10-13 07:23:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4411764705882353) internal successors, (196), 136 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 196 transitions. [2021-10-13 07:23:56,166 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 196 transitions. Word has length 53 [2021-10-13 07:23:56,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:56,166 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 196 transitions. [2021-10-13 07:23:56,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,167 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 196 transitions. [2021-10-13 07:23:56,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 07:23:56,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:56,170 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-10-13 07:23:56,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:23:56,170 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:56,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:56,171 INFO L82 PathProgramCache]: Analyzing trace with hash -696226375, now seen corresponding path program 1 times [2021-10-13 07:23:56,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:56,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483836626] [2021-10-13 07:23:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:56,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:23:56,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:56,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483836626] [2021-10-13 07:23:56,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483836626] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:56,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:56,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:23:56,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184019641] [2021-10-13 07:23:56,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:56,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:56,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:56,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:56,331 INFO L87 Difference]: Start difference. First operand 137 states and 196 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:56,518 INFO L93 Difference]: Finished difference Result 316 states and 469 transitions. [2021-10-13 07:23:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:56,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-13 07:23:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:56,521 INFO L225 Difference]: With dead ends: 316 [2021-10-13 07:23:56,521 INFO L226 Difference]: Without dead ends: 181 [2021-10-13 07:23:56,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:56,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-13 07:23:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2021-10-13 07:23:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.367816091954023) internal successors, (238), 174 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 238 transitions. [2021-10-13 07:23:56,536 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 238 transitions. Word has length 70 [2021-10-13 07:23:56,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:56,537 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 238 transitions. [2021-10-13 07:23:56,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 238 transitions. [2021-10-13 07:23:56,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-13 07:23:56,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:56,540 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-13 07:23:56,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:23:56,541 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:56,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash 105717542, now seen corresponding path program 1 times [2021-10-13 07:23:56,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:56,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446251863] [2021-10-13 07:23:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:56,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:23:56,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:56,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446251863] [2021-10-13 07:23:56,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446251863] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:56,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:56,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:56,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583079893] [2021-10-13 07:23:56,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:56,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:56,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:56,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:56,619 INFO L87 Difference]: Start difference. First operand 175 states and 238 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:56,774 INFO L93 Difference]: Finished difference Result 381 states and 532 transitions. [2021-10-13 07:23:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:56,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-10-13 07:23:56,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:56,777 INFO L225 Difference]: With dead ends: 381 [2021-10-13 07:23:56,777 INFO L226 Difference]: Without dead ends: 208 [2021-10-13 07:23:56,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-13 07:23:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2021-10-13 07:23:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3401015228426396) internal successors, (264), 197 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2021-10-13 07:23:56,791 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 89 [2021-10-13 07:23:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:56,792 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2021-10-13 07:23:56,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2021-10-13 07:23:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-13 07:23:56,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:56,803 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:23:56,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:23:56,803 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:56,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2131433571, now seen corresponding path program 1 times [2021-10-13 07:23:56,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:56,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224617819] [2021-10-13 07:23:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:56,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:56,927 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:56,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224617819] [2021-10-13 07:23:56,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224617819] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:23:56,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494130895] [2021-10-13 07:23:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:56,928 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:56,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:56,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:23:56,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:23:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:57,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:23:57,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:57,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-13 07:23:57,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494130895] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:23:57,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:23:57,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 6 [2021-10-13 07:23:57,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929920999] [2021-10-13 07:23:57,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:57,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:57,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:23:57,822 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:57,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:57,849 INFO L93 Difference]: Finished difference Result 393 states and 525 transitions. [2021-10-13 07:23:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:57,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-10-13 07:23:57,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:57,855 INFO L225 Difference]: With dead ends: 393 [2021-10-13 07:23:57,856 INFO L226 Difference]: Without dead ends: 391 [2021-10-13 07:23:57,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:23:57,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-13 07:23:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 390. [2021-10-13 07:23:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.339331619537275) internal successors, (521), 389 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:57,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 521 transitions. [2021-10-13 07:23:57,886 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 521 transitions. Word has length 108 [2021-10-13 07:23:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:57,890 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 521 transitions. [2021-10-13 07:23:57,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:57,891 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 521 transitions. [2021-10-13 07:23:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-13 07:23:57,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:57,902 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:23:57,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:58,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:58,119 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:58,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1481344401, now seen corresponding path program 1 times [2021-10-13 07:23:58,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:58,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115362210] [2021-10-13 07:23:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:58,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:23:58,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:58,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115362210] [2021-10-13 07:23:58,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115362210] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:58,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:58,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:58,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218134258] [2021-10-13 07:23:58,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:58,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:58,221 INFO L87 Difference]: Start difference. First operand 390 states and 521 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:58,378 INFO L93 Difference]: Finished difference Result 876 states and 1214 transitions. [2021-10-13 07:23:58,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:58,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-10-13 07:23:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:58,382 INFO L225 Difference]: With dead ends: 876 [2021-10-13 07:23:58,382 INFO L226 Difference]: Without dead ends: 488 [2021-10-13 07:23:58,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:58,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-10-13 07:23:58,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 468. [2021-10-13 07:23:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.3083511777301928) internal successors, (611), 467 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 611 transitions. [2021-10-13 07:23:58,403 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 611 transitions. Word has length 142 [2021-10-13 07:23:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:58,404 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 611 transitions. [2021-10-13 07:23:58,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 611 transitions. [2021-10-13 07:23:58,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-13 07:23:58,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:58,407 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:23:58,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:23:58,407 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:58,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:58,408 INFO L82 PathProgramCache]: Analyzing trace with hash 764979821, now seen corresponding path program 1 times [2021-10-13 07:23:58,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:58,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917974895] [2021-10-13 07:23:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:58,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-10-13 07:23:58,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:58,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917974895] [2021-10-13 07:23:58,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917974895] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:58,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:58,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:58,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953820302] [2021-10-13 07:23:58,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:58,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:58,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:58,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:58,503 INFO L87 Difference]: Start difference. First operand 468 states and 611 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:58,628 INFO L93 Difference]: Finished difference Result 998 states and 1336 transitions. [2021-10-13 07:23:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:58,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-10-13 07:23:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:58,632 INFO L225 Difference]: With dead ends: 998 [2021-10-13 07:23:58,633 INFO L226 Difference]: Without dead ends: 532 [2021-10-13 07:23:58,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:58,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-13 07:23:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 518. [2021-10-13 07:23:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.2901353965183753) internal successors, (667), 517 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 667 transitions. [2021-10-13 07:23:58,650 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 667 transitions. Word has length 147 [2021-10-13 07:23:58,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:58,650 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 667 transitions. [2021-10-13 07:23:58,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 667 transitions. [2021-10-13 07:23:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-10-13 07:23:58,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:58,653 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:23:58,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:23:58,653 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:58,654 INFO L82 PathProgramCache]: Analyzing trace with hash -806726266, now seen corresponding path program 1 times [2021-10-13 07:23:58,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:58,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832593990] [2021-10-13 07:23:58,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:58,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-13 07:23:58,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:58,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832593990] [2021-10-13 07:23:58,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832593990] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:58,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:58,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:58,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469207417] [2021-10-13 07:23:58,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:58,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:58,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:58,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:58,738 INFO L87 Difference]: Start difference. First operand 518 states and 667 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:58,899 INFO L93 Difference]: Finished difference Result 1142 states and 1517 transitions. [2021-10-13 07:23:58,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:58,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-10-13 07:23:58,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:58,903 INFO L225 Difference]: With dead ends: 1142 [2021-10-13 07:23:58,904 INFO L226 Difference]: Without dead ends: 624 [2021-10-13 07:23:58,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-13 07:23:58,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 612. [2021-10-13 07:23:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.3436988543371522) internal successors, (821), 611 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 821 transitions. [2021-10-13 07:23:58,925 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 821 transitions. Word has length 152 [2021-10-13 07:23:58,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:58,926 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 821 transitions. [2021-10-13 07:23:58,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 821 transitions. [2021-10-13 07:23:58,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-10-13 07:23:58,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:58,933 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 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] [2021-10-13 07:23:58,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:23:58,933 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:58,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:58,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1037992224, now seen corresponding path program 1 times [2021-10-13 07:23:58,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:58,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806210223] [2021-10-13 07:23:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:58,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-13 07:23:59,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:59,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806210223] [2021-10-13 07:23:59,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806210223] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:59,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:59,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:59,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326078832] [2021-10-13 07:23:59,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:59,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:59,018 INFO L87 Difference]: Start difference. First operand 612 states and 821 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:59,144 INFO L93 Difference]: Finished difference Result 1280 states and 1738 transitions. [2021-10-13 07:23:59,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:59,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-10-13 07:23:59,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:59,149 INFO L225 Difference]: With dead ends: 1280 [2021-10-13 07:23:59,149 INFO L226 Difference]: Without dead ends: 670 [2021-10-13 07:23:59,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:59,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-10-13 07:23:59,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 666. [2021-10-13 07:23:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.324812030075188) internal successors, (881), 665 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 881 transitions. [2021-10-13 07:23:59,172 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 881 transitions. Word has length 169 [2021-10-13 07:23:59,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:59,172 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 881 transitions. [2021-10-13 07:23:59,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 881 transitions. [2021-10-13 07:23:59,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-10-13 07:23:59,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:59,176 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1] [2021-10-13 07:23:59,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:23:59,176 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:59,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:59,177 INFO L82 PathProgramCache]: Analyzing trace with hash -522321712, now seen corresponding path program 1 times [2021-10-13 07:23:59,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:59,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132083849] [2021-10-13 07:23:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:59,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-13 07:23:59,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:59,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132083849] [2021-10-13 07:23:59,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132083849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:59,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:59,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:59,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129187980] [2021-10-13 07:23:59,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:59,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:59,239 INFO L87 Difference]: Start difference. First operand 666 states and 881 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:59,378 INFO L93 Difference]: Finished difference Result 1388 states and 1862 transitions. [2021-10-13 07:23:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2021-10-13 07:23:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:59,385 INFO L225 Difference]: With dead ends: 1388 [2021-10-13 07:23:59,386 INFO L226 Difference]: Without dead ends: 724 [2021-10-13 07:23:59,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:59,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-10-13 07:23:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2021-10-13 07:23:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 1.3070539419087137) internal successors, (945), 723 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 945 transitions. [2021-10-13 07:23:59,409 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 945 transitions. Word has length 173 [2021-10-13 07:23:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:59,410 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 945 transitions. [2021-10-13 07:23:59,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 945 transitions. [2021-10-13 07:23:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-10-13 07:23:59,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:59,413 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:59,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:23:59,414 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:59,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1537114542, now seen corresponding path program 1 times [2021-10-13 07:23:59,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:59,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10870305] [2021-10-13 07:23:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:59,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 303 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:23:59,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:59,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10870305] [2021-10-13 07:23:59,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10870305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:23:59,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072216029] [2021-10-13 07:23:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:59,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:59,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:23:59,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:23:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:59,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:23:59,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-10-13 07:24:00,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-10-13 07:24:00,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072216029] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:00,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:24:00,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [4] total 7 [2021-10-13 07:24:00,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157711336] [2021-10-13 07:24:00,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:24:00,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:24:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:24:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:24:00,700 INFO L87 Difference]: Start difference. First operand 724 states and 945 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:01,040 INFO L93 Difference]: Finished difference Result 1574 states and 2111 transitions. [2021-10-13 07:24:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:24:01,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-10-13 07:24:01,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:01,046 INFO L225 Difference]: With dead ends: 1574 [2021-10-13 07:24:01,046 INFO L226 Difference]: Without dead ends: 770 [2021-10-13 07:24:01,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:24:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-10-13 07:24:01,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 745. [2021-10-13 07:24:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 1.2943548387096775) internal successors, (963), 744 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:01,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 963 transitions. [2021-10-13 07:24:01,077 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 963 transitions. Word has length 200 [2021-10-13 07:24:01,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:01,078 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 963 transitions. [2021-10-13 07:24:01,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 963 transitions. [2021-10-13 07:24:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-10-13 07:24:01,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:01,083 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1] [2021-10-13 07:24:01,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:01,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:24:01,297 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:01,298 INFO L82 PathProgramCache]: Analyzing trace with hash 221507132, now seen corresponding path program 1 times [2021-10-13 07:24:01,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:24:01,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158170844] [2021-10-13 07:24:01,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:01,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:24:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-13 07:24:01,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:24:01,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158170844] [2021-10-13 07:24:01,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158170844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:24:01,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580230840] [2021-10-13 07:24:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:01,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:24:01,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:24:01,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:24:01,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:24:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:01,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:01,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-13 07:24:02,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-13 07:24:02,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580230840] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:02,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1429482378] [2021-10-13 07:24:02,766 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2021-10-13 07:24:02,766 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:24:02,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:24:02,781 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:24:02,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:24:03,140 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:24:03,148 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:24:03,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:24:03,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:24:03,150 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:24:03,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:24:03,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:24:03,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 319 [2021-10-13 07:24:03,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:24:03,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:24:03,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:24:03,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:24:03,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:24:03,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:24:03,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:24:03,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:24:03,245 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:24:03,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:24:03,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:24:03,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:24:03,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:24:03,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:24:03,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:24:03,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:24:03,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:24:03,279 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:24:03,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:24:03,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:24:03,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:24:03,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:24:03,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:24:03,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:24:03,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:24:03,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:24:03,316 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:24:03,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:03,411 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:24:03,515 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.0 percent of original size [2021-10-13 07:24:03,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 879 [2021-10-13 07:24:03,551 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 07:24:03,552 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:888, output treesize:879 [2021-10-13 07:24:03,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:03,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:24:03,774 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_18| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:24:03,777 INFO L168 Benchmark]: Toolchain (without parser) took 10385.85 ms. Allocated memory was 125.8 MB in the beginning and 207.6 MB in the end (delta: 81.8 MB). Free memory was 88.4 MB in the beginning and 104.5 MB in the end (delta: -16.1 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:03,777 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 96.1 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:24:03,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.41 ms. Allocated memory is still 125.8 MB. Free memory was 88.4 MB in the beginning and 95.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:03,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.15 ms. Allocated memory is still 125.8 MB. Free memory was 94.7 MB in the beginning and 92.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:03,778 INFO L168 Benchmark]: Boogie Preprocessor took 64.74 ms. Allocated memory is still 125.8 MB. Free memory was 91.9 MB in the beginning and 89.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:03,779 INFO L168 Benchmark]: RCFGBuilder took 1229.41 ms. Allocated memory is still 125.8 MB. Free memory was 89.8 MB in the beginning and 45.7 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:03,779 INFO L168 Benchmark]: TraceAbstraction took 8465.12 ms. Allocated memory was 125.8 MB in the beginning and 207.6 MB in the end (delta: 81.8 MB). Free memory was 45.0 MB in the beginning and 104.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:03,781 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 125.8 MB. Free memory was 96.1 MB in the beginning and 96.1 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 541.41 ms. Allocated memory is still 125.8 MB. Free memory was 88.4 MB in the beginning and 95.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.15 ms. Allocated memory is still 125.8 MB. Free memory was 94.7 MB in the beginning and 92.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.74 ms. Allocated memory is still 125.8 MB. Free memory was 91.9 MB in the beginning and 89.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1229.41 ms. Allocated memory is still 125.8 MB. Free memory was 89.8 MB in the beginning and 45.7 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8465.12 ms. Allocated memory was 125.8 MB in the beginning and 207.6 MB in the end (delta: 81.8 MB). Free memory was 45.0 MB in the beginning and 104.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_18| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_18|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:24:03,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:24:06,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:24:06,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:24:06,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:24:06,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:24:06,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:24:06,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:24:06,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:24:06,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:24:06,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:24:06,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:24:06,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:24:06,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:24:06,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:24:06,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:24:06,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:24:06,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:24:06,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:24:06,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:24:06,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:24:06,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:24:06,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:24:06,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:24:06,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:24:06,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:24:06,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:24:06,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:24:06,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:24:06,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:24:06,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:24:06,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:24:06,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:24:06,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:24:06,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:24:06,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:24:06,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:24:06,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:24:06,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:24:06,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:24:06,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:24:06,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:24:06,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:24:06,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:24:06,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:24:06,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:24:06,585 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:24:06,585 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:24:06,586 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:24:06,586 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:24:06,586 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:24:06,586 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:24:06,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:24:06,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:24:06,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:24:06,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:24:06,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:24:06,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:24:06,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:24:06,591 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:24:06,591 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:24:06,591 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:24:06,591 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:24:06,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:24:06,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:24:06,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:24:06,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:24:06,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:24:06,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:24:06,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:24:06,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:24:06,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:24:06,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:24:06,594 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:24:06,594 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:06,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:24:06,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:24:06,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:24:06,595 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_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b2d978b2f3873db9b988022a041d2d18a2f859 [2021-10-13 07:24:07,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:24:07,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:24:07,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:24:07,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:24:07,087 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:24:07,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2021-10-13 07:24:07,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/data/ff3418af4/334d38f7b9b84569917bb11ff2145c1f/FLAGf84d13b92 [2021-10-13 07:24:07,732 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:24:07,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2021-10-13 07:24:07,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/data/ff3418af4/334d38f7b9b84569917bb11ff2145c1f/FLAGf84d13b92 [2021-10-13 07:24:08,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/data/ff3418af4/334d38f7b9b84569917bb11ff2145c1f [2021-10-13 07:24:08,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:24:08,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:24:08,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:24:08,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:24:08,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:24:08,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ad8cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08, skipping insertion in model container [2021-10-13 07:24:08,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:24:08,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:24:08,344 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c[44644,44657] [2021-10-13 07:24:08,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:24:08,398 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:24:08,508 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c[44644,44657] [2021-10-13 07:24:08,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:24:08,544 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:24:08,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08 WrapperNode [2021-10-13 07:24:08,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:24:08,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:24:08,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:24:08,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:24:08,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:24:08,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:24:08,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:24:08,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:24:08,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:24:08,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:24:08,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:24:08,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:24:08,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (1/1) ... [2021-10-13 07:24:08,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:24:08,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:24:08,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:24:08,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:24:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:24:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:24:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:24:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:24:08,972 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:24:09,424 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:24:09,424 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:24:09,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:24:09,433 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:24:09,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:24:09 BoogieIcfgContainer [2021-10-13 07:24:09,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:24:09,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:24:09,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:24:09,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:24:09,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:24:08" (1/3) ... [2021-10-13 07:24:09,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b43a5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:24:09, skipping insertion in model container [2021-10-13 07:24:09,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:08" (2/3) ... [2021-10-13 07:24:09,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b43a5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:24:09, skipping insertion in model container [2021-10-13 07:24:09,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:24:09" (3/3) ... [2021-10-13 07:24:09,444 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.BV.c.cil.c [2021-10-13 07:24:09,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:24:09,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:24:09,498 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:24:09,504 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:24:09,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:24:09,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 138 states have (on average 1.7318840579710144) internal successors, (239), 139 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 07:24:09,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:09,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:09,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:09,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:09,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1632000041, now seen corresponding path program 1 times [2021-10-13 07:24:09,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:09,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806615383] [2021-10-13 07:24:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:09,561 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:09,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:09,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:09,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:24:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:09,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:24:09,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:09,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:10,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:10,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806615383] [2021-10-13 07:24:10,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806615383] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:10,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:10,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:10,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174838509] [2021-10-13 07:24:10,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:10,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:10,165 INFO L87 Difference]: Start difference. First operand has 140 states, 138 states have (on average 1.7318840579710144) internal successors, (239), 139 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:10,371 INFO L93 Difference]: Finished difference Result 301 states and 513 transitions. [2021-10-13 07:24:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:10,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-13 07:24:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:10,384 INFO L225 Difference]: With dead ends: 301 [2021-10-13 07:24:10,385 INFO L226 Difference]: Without dead ends: 147 [2021-10-13 07:24:10,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-13 07:24:10,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2021-10-13 07:24:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.5244755244755244) internal successors, (218), 143 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 218 transitions. [2021-10-13 07:24:10,434 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 218 transitions. Word has length 44 [2021-10-13 07:24:10,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:10,435 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 218 transitions. [2021-10-13 07:24:10,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 218 transitions. [2021-10-13 07:24:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 07:24:10,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:10,439 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:10,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:10,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:10,650 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:10,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:10,651 INFO L82 PathProgramCache]: Analyzing trace with hash -193922812, now seen corresponding path program 1 times [2021-10-13 07:24:10,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:10,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760693664] [2021-10-13 07:24:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:10,652 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:10,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:10,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:10,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:24:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:10,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:10,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:11,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:11,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:11,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760693664] [2021-10-13 07:24:11,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760693664] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:11,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:11,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:11,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751136970] [2021-10-13 07:24:11,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:11,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:11,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:11,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:11,202 INFO L87 Difference]: Start difference. First operand 144 states and 218 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:11,384 INFO L93 Difference]: Finished difference Result 305 states and 468 transitions. [2021-10-13 07:24:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:11,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-13 07:24:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:11,391 INFO L225 Difference]: With dead ends: 305 [2021-10-13 07:24:11,391 INFO L226 Difference]: Without dead ends: 169 [2021-10-13 07:24:11,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:11,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-13 07:24:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2021-10-13 07:24:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4878048780487805) internal successors, (244), 164 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 244 transitions. [2021-10-13 07:24:11,425 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 244 transitions. Word has length 60 [2021-10-13 07:24:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:11,426 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 244 transitions. [2021-10-13 07:24:11,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 244 transitions. [2021-10-13 07:24:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-13 07:24:11,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:11,438 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:11,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:11,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:11,653 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:11,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:11,654 INFO L82 PathProgramCache]: Analyzing trace with hash -751274889, now seen corresponding path program 1 times [2021-10-13 07:24:11,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:11,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880886331] [2021-10-13 07:24:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:11,658 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:11,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:11,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:11,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:24:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:11,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:11,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:24:12,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:24:12,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:12,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880886331] [2021-10-13 07:24:12,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880886331] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:12,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:12,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:12,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937663810] [2021-10-13 07:24:12,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:12,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:12,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:12,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:12,256 INFO L87 Difference]: Start difference. First operand 165 states and 244 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:12,454 INFO L93 Difference]: Finished difference Result 368 states and 559 transitions. [2021-10-13 07:24:12,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:12,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-13 07:24:12,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:12,457 INFO L225 Difference]: With dead ends: 368 [2021-10-13 07:24:12,458 INFO L226 Difference]: Without dead ends: 211 [2021-10-13 07:24:12,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-13 07:24:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2021-10-13 07:24:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.412621359223301) internal successors, (291), 206 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 291 transitions. [2021-10-13 07:24:12,471 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 291 transitions. Word has length 81 [2021-10-13 07:24:12,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:12,472 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 291 transitions. [2021-10-13 07:24:12,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 291 transitions. [2021-10-13 07:24:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-13 07:24:12,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:12,474 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:12,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:12,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:12,688 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:12,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:12,689 INFO L82 PathProgramCache]: Analyzing trace with hash -503128395, now seen corresponding path program 1 times [2021-10-13 07:24:12,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:12,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522026135] [2021-10-13 07:24:12,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:12,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:12,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:12,694 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:12,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:24:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:12,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:12,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:24:13,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:24:13,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:13,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522026135] [2021-10-13 07:24:13,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522026135] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:13,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:13,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:13,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282020609] [2021-10-13 07:24:13,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:13,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:13,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:13,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:13,269 INFO L87 Difference]: Start difference. First operand 207 states and 291 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:13,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:13,410 INFO L93 Difference]: Finished difference Result 432 states and 616 transitions. [2021-10-13 07:24:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:13,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-13 07:24:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:13,413 INFO L225 Difference]: With dead ends: 432 [2021-10-13 07:24:13,413 INFO L226 Difference]: Without dead ends: 233 [2021-10-13 07:24:13,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:13,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-10-13 07:24:13,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 230. [2021-10-13 07:24:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.3930131004366813) internal successors, (319), 229 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 319 transitions. [2021-10-13 07:24:13,434 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 319 transitions. Word has length 81 [2021-10-13 07:24:13,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:13,436 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 319 transitions. [2021-10-13 07:24:13,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 319 transitions. [2021-10-13 07:24:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-13 07:24:13,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:13,438 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:13,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:13,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:13,653 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:13,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:13,653 INFO L82 PathProgramCache]: Analyzing trace with hash 356294499, now seen corresponding path program 1 times [2021-10-13 07:24:13,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:13,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373271470] [2021-10-13 07:24:13,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:13,654 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:13,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:13,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:13,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:24:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:13,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:13,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:24:14,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:24:14,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:14,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373271470] [2021-10-13 07:24:14,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373271470] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:14,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:14,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:14,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061730325] [2021-10-13 07:24:14,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:14,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:14,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:14,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:14,296 INFO L87 Difference]: Start difference. First operand 230 states and 319 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:14,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:14,465 INFO L93 Difference]: Finished difference Result 489 states and 692 transitions. [2021-10-13 07:24:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:14,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-13 07:24:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:14,471 INFO L225 Difference]: With dead ends: 489 [2021-10-13 07:24:14,471 INFO L226 Difference]: Without dead ends: 267 [2021-10-13 07:24:14,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-13 07:24:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 255. [2021-10-13 07:24:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.374015748031496) internal successors, (349), 254 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 349 transitions. [2021-10-13 07:24:14,490 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 349 transitions. Word has length 101 [2021-10-13 07:24:14,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:14,491 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 349 transitions. [2021-10-13 07:24:14,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 349 transitions. [2021-10-13 07:24:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-13 07:24:14,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:14,500 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:24:14,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:14,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:14,715 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:14,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:14,716 INFO L82 PathProgramCache]: Analyzing trace with hash 112174862, now seen corresponding path program 1 times [2021-10-13 07:24:14,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:14,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126567311] [2021-10-13 07:24:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:14,717 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:14,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:14,719 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:14,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:24:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:15,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:15,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:24:15,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:24:15,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:15,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126567311] [2021-10-13 07:24:15,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126567311] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:15,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:15,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:24:15,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201626146] [2021-10-13 07:24:15,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:24:15,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:24:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:15,632 INFO L87 Difference]: Start difference. First operand 255 states and 349 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:15,697 INFO L93 Difference]: Finished difference Result 986 states and 1348 transitions. [2021-10-13 07:24:15,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:24:15,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-10-13 07:24:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:15,702 INFO L225 Difference]: With dead ends: 986 [2021-10-13 07:24:15,703 INFO L226 Difference]: Without dead ends: 739 [2021-10-13 07:24:15,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:15,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-10-13 07:24:15,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 737. [2021-10-13 07:24:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.3627717391304348) internal successors, (1003), 736 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1003 transitions. [2021-10-13 07:24:15,727 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1003 transitions. Word has length 121 [2021-10-13 07:24:15,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:15,727 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1003 transitions. [2021-10-13 07:24:15,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1003 transitions. [2021-10-13 07:24:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:24:15,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:15,730 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:24:15,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:15,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:15,952 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:15,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:15,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1428032826, now seen corresponding path program 1 times [2021-10-13 07:24:15,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:15,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968892122] [2021-10-13 07:24:15,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:15,953 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:15,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:15,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:15,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:24:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:16,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:16,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:24:16,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:24:16,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:16,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968892122] [2021-10-13 07:24:16,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968892122] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:16,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:16,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:16,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907469430] [2021-10-13 07:24:16,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:16,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:16,799 INFO L87 Difference]: Start difference. First operand 737 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:16,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:16,854 INFO L93 Difference]: Finished difference Result 1709 states and 2327 transitions. [2021-10-13 07:24:16,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:16,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-13 07:24:16,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:16,863 INFO L225 Difference]: With dead ends: 1709 [2021-10-13 07:24:16,863 INFO L226 Difference]: Without dead ends: 980 [2021-10-13 07:24:16,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-10-13 07:24:16,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2021-10-13 07:24:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 979 states have (on average 1.3595505617977528) internal successors, (1331), 979 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1331 transitions. [2021-10-13 07:24:16,896 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1331 transitions. Word has length 122 [2021-10-13 07:24:16,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:16,897 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 1331 transitions. [2021-10-13 07:24:16,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:16,897 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1331 transitions. [2021-10-13 07:24:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:24:16,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:16,900 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:24:16,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:17,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:17,113 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:17,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:17,113 INFO L82 PathProgramCache]: Analyzing trace with hash -990451652, now seen corresponding path program 1 times [2021-10-13 07:24:17,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:17,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887314829] [2021-10-13 07:24:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:17,114 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:17,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:17,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:17,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:24:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:17,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:17,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:24:17,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:24:18,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:18,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887314829] [2021-10-13 07:24:18,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887314829] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:18,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:18,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:18,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337571055] [2021-10-13 07:24:18,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:18,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:18,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:18,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:18,006 INFO L87 Difference]: Start difference. First operand 980 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:18,057 INFO L93 Difference]: Finished difference Result 1976 states and 2680 transitions. [2021-10-13 07:24:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-13 07:24:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:18,066 INFO L225 Difference]: With dead ends: 1976 [2021-10-13 07:24:18,066 INFO L226 Difference]: Without dead ends: 1004 [2021-10-13 07:24:18,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:18,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-13 07:24:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2021-10-13 07:24:18,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.3559322033898304) internal successors, (1360), 1003 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1360 transitions. [2021-10-13 07:24:18,098 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1360 transitions. Word has length 122 [2021-10-13 07:24:18,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:18,099 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1360 transitions. [2021-10-13 07:24:18,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1360 transitions. [2021-10-13 07:24:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:24:18,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:18,102 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:24:18,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:18,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:18,318 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:18,318 INFO L82 PathProgramCache]: Analyzing trace with hash 398842362, now seen corresponding path program 1 times [2021-10-13 07:24:18,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:18,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501183782] [2021-10-13 07:24:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:18,319 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:18,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:18,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:18,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:24:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:18,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:18,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-13 07:24:18,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-13 07:24:19,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:19,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501183782] [2021-10-13 07:24:19,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501183782] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:19,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:19,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:19,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630662019] [2021-10-13 07:24:19,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:19,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:19,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:19,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:19,287 INFO L87 Difference]: Start difference. First operand 1004 states and 1360 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:19,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:19,347 INFO L93 Difference]: Finished difference Result 2013 states and 2722 transitions. [2021-10-13 07:24:19,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:19,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-13 07:24:19,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:19,353 INFO L225 Difference]: With dead ends: 2013 [2021-10-13 07:24:19,354 INFO L226 Difference]: Without dead ends: 1017 [2021-10-13 07:24:19,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:19,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-10-13 07:24:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1017. [2021-10-13 07:24:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 1.3513779527559056) internal successors, (1373), 1016 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1373 transitions. [2021-10-13 07:24:19,386 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1373 transitions. Word has length 122 [2021-10-13 07:24:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:19,386 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 1373 transitions. [2021-10-13 07:24:19,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1373 transitions. [2021-10-13 07:24:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-10-13 07:24:19,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:19,390 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:24:19,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:19,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:19,606 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:19,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:19,606 INFO L82 PathProgramCache]: Analyzing trace with hash -541828422, now seen corresponding path program 1 times [2021-10-13 07:24:19,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:19,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386055898] [2021-10-13 07:24:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:19,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:19,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:19,609 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:19,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:24:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:20,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:20,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:24:20,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:24:20,828 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:20,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386055898] [2021-10-13 07:24:20,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386055898] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:20,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:20,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:24:20,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553688669] [2021-10-13 07:24:20,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:24:20,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:20,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:24:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:20,831 INFO L87 Difference]: Start difference. First operand 1017 states and 1373 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:21,139 INFO L93 Difference]: Finished difference Result 2321 states and 3285 transitions. [2021-10-13 07:24:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:24:21,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-10-13 07:24:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:21,147 INFO L225 Difference]: With dead ends: 2321 [2021-10-13 07:24:21,148 INFO L226 Difference]: Without dead ends: 1325 [2021-10-13 07:24:21,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:21,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2021-10-13 07:24:21,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1295. [2021-10-13 07:24:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1294 states have (on average 1.3894899536321483) internal successors, (1798), 1294 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1798 transitions. [2021-10-13 07:24:21,193 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1798 transitions. Word has length 159 [2021-10-13 07:24:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:21,193 INFO L470 AbstractCegarLoop]: Abstraction has 1295 states and 1798 transitions. [2021-10-13 07:24:21,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1798 transitions. [2021-10-13 07:24:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-10-13 07:24:21,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:21,199 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:21,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:21,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:21,412 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:21,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:21,413 INFO L82 PathProgramCache]: Analyzing trace with hash -640990187, now seen corresponding path program 1 times [2021-10-13 07:24:21,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:21,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24703535] [2021-10-13 07:24:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:21,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:21,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:21,415 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:21,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:24:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:21,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:21,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-10-13 07:24:22,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-10-13 07:24:22,873 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:22,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24703535] [2021-10-13 07:24:22,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24703535] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:22,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:22,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:22,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430558573] [2021-10-13 07:24:22,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:22,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:22,876 INFO L87 Difference]: Start difference. First operand 1295 states and 1798 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:23,073 INFO L93 Difference]: Finished difference Result 2693 states and 3803 transitions. [2021-10-13 07:24:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:23,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-10-13 07:24:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:23,082 INFO L225 Difference]: With dead ends: 2693 [2021-10-13 07:24:23,082 INFO L226 Difference]: Without dead ends: 1419 [2021-10-13 07:24:23,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:23,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-10-13 07:24:23,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2021-10-13 07:24:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 1.369534555712271) internal successors, (1942), 1418 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1942 transitions. [2021-10-13 07:24:23,126 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1942 transitions. Word has length 203 [2021-10-13 07:24:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:23,127 INFO L470 AbstractCegarLoop]: Abstraction has 1419 states and 1942 transitions. [2021-10-13 07:24:23,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1942 transitions. [2021-10-13 07:24:23,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-10-13 07:24:23,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:23,132 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:23,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:23,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:23,345 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:23,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:23,346 INFO L82 PathProgramCache]: Analyzing trace with hash -890289059, now seen corresponding path program 1 times [2021-10-13 07:24:23,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:23,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214057874] [2021-10-13 07:24:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:23,347 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:23,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:23,348 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:23,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:24:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:24,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:24,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-13 07:24:24,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-13 07:24:25,082 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:25,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214057874] [2021-10-13 07:24:25,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214057874] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:25,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:25,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:24:25,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644478215] [2021-10-13 07:24:25,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:24:25,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:25,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:24:25,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:25,085 INFO L87 Difference]: Start difference. First operand 1419 states and 1942 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:25,401 INFO L93 Difference]: Finished difference Result 2870 states and 4055 transitions. [2021-10-13 07:24:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:24:25,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2021-10-13 07:24:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:25,409 INFO L225 Difference]: With dead ends: 2870 [2021-10-13 07:24:25,410 INFO L226 Difference]: Without dead ends: 1294 [2021-10-13 07:24:25,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-10-13 07:24:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1280. [2021-10-13 07:24:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3940578577013292) internal successors, (1783), 1279 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1783 transitions. [2021-10-13 07:24:25,466 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1783 transitions. Word has length 231 [2021-10-13 07:24:25,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:25,467 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1783 transitions. [2021-10-13 07:24:25,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:25,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1783 transitions. [2021-10-13 07:24:25,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-10-13 07:24:25,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:25,473 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 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, 1, 1, 1, 1] [2021-10-13 07:24:25,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:25,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:25,686 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:25,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:25,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1829254476, now seen corresponding path program 1 times [2021-10-13 07:24:25,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:25,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824335299] [2021-10-13 07:24:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:25,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:25,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:25,689 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:25,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:24:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:26,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:26,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-13 07:24:27,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-13 07:24:27,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:27,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824335299] [2021-10-13 07:24:27,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824335299] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:27,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:27,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:27,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997415361] [2021-10-13 07:24:27,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:27,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:27,814 INFO L87 Difference]: Start difference. First operand 1280 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:27,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:27,883 INFO L93 Difference]: Finished difference Result 3591 states and 5060 transitions. [2021-10-13 07:24:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:27,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2021-10-13 07:24:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:27,893 INFO L225 Difference]: With dead ends: 3591 [2021-10-13 07:24:27,894 INFO L226 Difference]: Without dead ends: 1606 [2021-10-13 07:24:27,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:27,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-13 07:24:27,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1566. [2021-10-13 07:24:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1565 states have (on average 1.392332268370607) internal successors, (2179), 1565 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2179 transitions. [2021-10-13 07:24:27,953 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2179 transitions. Word has length 271 [2021-10-13 07:24:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:27,954 INFO L470 AbstractCegarLoop]: Abstraction has 1566 states and 2179 transitions. [2021-10-13 07:24:27,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2179 transitions. [2021-10-13 07:24:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-10-13 07:24:27,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:27,961 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:27,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:28,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:28,181 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:28,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:28,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1891635766, now seen corresponding path program 1 times [2021-10-13 07:24:28,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:28,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987842431] [2021-10-13 07:24:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:28,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:28,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:28,184 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:28,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:24:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:29,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:29,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-10-13 07:24:29,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-10-13 07:24:30,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:30,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987842431] [2021-10-13 07:24:30,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987842431] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:30,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:30,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:30,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998229011] [2021-10-13 07:24:30,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:30,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:30,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:30,418 INFO L87 Difference]: Start difference. First operand 1566 states and 2179 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:30,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:30,622 INFO L93 Difference]: Finished difference Result 3247 states and 4577 transitions. [2021-10-13 07:24:30,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:30,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2021-10-13 07:24:30,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:30,634 INFO L225 Difference]: With dead ends: 3247 [2021-10-13 07:24:30,634 INFO L226 Difference]: Without dead ends: 1702 [2021-10-13 07:24:30,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:30,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2021-10-13 07:24:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1674. [2021-10-13 07:24:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 1.3789599521817095) internal successors, (2307), 1673 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2307 transitions. [2021-10-13 07:24:30,704 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2307 transitions. Word has length 317 [2021-10-13 07:24:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:30,704 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 2307 transitions. [2021-10-13 07:24:30,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:30,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2307 transitions. [2021-10-13 07:24:30,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-10-13 07:24:30,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:30,728 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:30,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:30,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:30,942 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:30,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:30,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1795423714, now seen corresponding path program 1 times [2021-10-13 07:24:30,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:30,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918150976] [2021-10-13 07:24:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:30,943 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:30,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:30,945 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:30,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:24:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:31,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:31,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2021-10-13 07:24:32,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2021-10-13 07:24:33,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:33,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918150976] [2021-10-13 07:24:33,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918150976] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:33,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:33,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:33,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135212767] [2021-10-13 07:24:33,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:33,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:33,366 INFO L87 Difference]: Start difference. First operand 1674 states and 2307 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:33,556 INFO L93 Difference]: Finished difference Result 3451 states and 4809 transitions. [2021-10-13 07:24:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:33,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 340 [2021-10-13 07:24:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:33,567 INFO L225 Difference]: With dead ends: 3451 [2021-10-13 07:24:33,568 INFO L226 Difference]: Without dead ends: 1798 [2021-10-13 07:24:33,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-10-13 07:24:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1790. [2021-10-13 07:24:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1789 states have (on average 1.3655673560648407) internal successors, (2443), 1789 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2443 transitions. [2021-10-13 07:24:33,639 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2443 transitions. Word has length 340 [2021-10-13 07:24:33,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:33,640 INFO L470 AbstractCegarLoop]: Abstraction has 1790 states and 2443 transitions. [2021-10-13 07:24:33,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2443 transitions. [2021-10-13 07:24:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-10-13 07:24:33,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:33,645 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:33,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:33,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:33,865 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:33,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:33,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1520948552, now seen corresponding path program 1 times [2021-10-13 07:24:33,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:33,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552683676] [2021-10-13 07:24:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:33,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:33,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:33,869 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:33,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:24:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:34,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:34,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2021-10-13 07:24:35,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2021-10-13 07:24:36,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:36,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552683676] [2021-10-13 07:24:36,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552683676] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:36,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:36,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:36,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902259193] [2021-10-13 07:24:36,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:36,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:36,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:36,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:36,673 INFO L87 Difference]: Start difference. First operand 1790 states and 2443 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:36,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:36,766 INFO L93 Difference]: Finished difference Result 5320 states and 7267 transitions. [2021-10-13 07:24:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:36,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-10-13 07:24:36,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:36,788 INFO L225 Difference]: With dead ends: 5320 [2021-10-13 07:24:36,788 INFO L226 Difference]: Without dead ends: 3551 [2021-10-13 07:24:36,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:36,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-10-13 07:24:36,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3549. [2021-10-13 07:24:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 3548 states have (on average 1.3641488162344984) internal successors, (4840), 3548 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 4840 transitions. [2021-10-13 07:24:36,917 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 4840 transitions. Word has length 373 [2021-10-13 07:24:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:36,917 INFO L470 AbstractCegarLoop]: Abstraction has 3549 states and 4840 transitions. [2021-10-13 07:24:36,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 4840 transitions. [2021-10-13 07:24:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-10-13 07:24:36,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:36,942 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:36,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:37,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:37,143 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:37,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:37,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1193592354, now seen corresponding path program 1 times [2021-10-13 07:24:37,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:37,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951236530] [2021-10-13 07:24:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:37,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:37,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:37,145 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:37,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:24:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:38,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:38,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-13 07:24:39,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-13 07:24:40,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:40,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951236530] [2021-10-13 07:24:40,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951236530] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:40,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1508751956] [2021-10-13 07:24:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:40,022 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:24:40,033 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:24:40,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-13 07:24:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:41,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:41,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-13 07:24:42,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-13 07:24:43,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1508751956] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:43,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119364225] [2021-10-13 07:24:43,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:43,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:24:43,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:24:43,410 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:24:43,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 07:24:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:45,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:45,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-13 07:24:46,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 876 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-10-13 07:24:46,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119364225] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:46,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:24:46,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-13 07:24:46,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445090711] [2021-10-13 07:24:46,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:24:46,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:46,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:24:46,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:24:46,940 INFO L87 Difference]: Start difference. First operand 3549 states and 4840 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:47,279 INFO L93 Difference]: Finished difference Result 10581 states and 14386 transitions. [2021-10-13 07:24:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:24:47,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-10-13 07:24:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:47,319 INFO L225 Difference]: With dead ends: 10581 [2021-10-13 07:24:47,319 INFO L226 Difference]: Without dead ends: 7053 [2021-10-13 07:24:47,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2240 GetRequests, 2237 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:24:47,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7053 states. [2021-10-13 07:24:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7053 to 4739. [2021-10-13 07:24:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4739 states, 4738 states have (on average 1.3925707049387928) internal successors, (6598), 4738 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:47,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4739 states to 4739 states and 6598 transitions. [2021-10-13 07:24:47,522 INFO L78 Accepts]: Start accepts. Automaton has 4739 states and 6598 transitions. Word has length 374 [2021-10-13 07:24:47,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:47,522 INFO L470 AbstractCegarLoop]: Abstraction has 4739 states and 6598 transitions. [2021-10-13 07:24:47,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:47,523 INFO L276 IsEmpty]: Start isEmpty. Operand 4739 states and 6598 transitions. [2021-10-13 07:24:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-10-13 07:24:47,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:47,533 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:47,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:47,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:47,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-10-13 07:24:48,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:48,152 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:48,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:48,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1453642420, now seen corresponding path program 1 times [2021-10-13 07:24:48,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:48,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166950151] [2021-10-13 07:24:48,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:48,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:48,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:48,154 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:48,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:24:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:49,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:49,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-13 07:24:50,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-13 07:24:51,354 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:51,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166950151] [2021-10-13 07:24:51,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166950151] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:51,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:51,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:51,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266058403] [2021-10-13 07:24:51,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:51,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:51,357 INFO L87 Difference]: Start difference. First operand 4739 states and 6598 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:51,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:51,592 INFO L93 Difference]: Finished difference Result 9803 states and 13759 transitions. [2021-10-13 07:24:51,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:51,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 404 [2021-10-13 07:24:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:51,623 INFO L225 Difference]: With dead ends: 9803 [2021-10-13 07:24:51,630 INFO L226 Difference]: Without dead ends: 5085 [2021-10-13 07:24:51,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2021-10-13 07:24:51,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 4899. [2021-10-13 07:24:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 4898 states have (on average 1.3879134340547161) internal successors, (6798), 4898 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 6798 transitions. [2021-10-13 07:24:51,826 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 6798 transitions. Word has length 404 [2021-10-13 07:24:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:51,828 INFO L470 AbstractCegarLoop]: Abstraction has 4899 states and 6798 transitions. [2021-10-13 07:24:51,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:51,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 6798 transitions. [2021-10-13 07:24:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-10-13 07:24:51,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:51,835 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:51,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:52,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:52,055 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:52,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:52,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1756109688, now seen corresponding path program 1 times [2021-10-13 07:24:52,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:52,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074049034] [2021-10-13 07:24:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:52,056 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:52,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:52,058 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:52,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 07:24:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:53,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:53,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 984 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-13 07:24:54,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 984 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-13 07:24:55,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:55,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074049034] [2021-10-13 07:24:55,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074049034] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:55,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:55,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:55,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519348226] [2021-10-13 07:24:55,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:55,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:55,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:55,506 INFO L87 Difference]: Start difference. First operand 4899 states and 6798 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:55,767 INFO L93 Difference]: Finished difference Result 10353 states and 14611 transitions. [2021-10-13 07:24:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:55,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2021-10-13 07:24:55,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:55,782 INFO L225 Difference]: With dead ends: 10353 [2021-10-13 07:24:55,782 INFO L226 Difference]: Without dead ends: 5475 [2021-10-13 07:24:55,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2021-10-13 07:24:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 5443. [2021-10-13 07:24:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5443 states, 5442 states have (on average 1.3638368246968027) internal successors, (7422), 5442 states have internal predecessors, (7422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 7422 transitions. [2021-10-13 07:24:55,969 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 7422 transitions. Word has length 405 [2021-10-13 07:24:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:55,970 INFO L470 AbstractCegarLoop]: Abstraction has 5443 states and 7422 transitions. [2021-10-13 07:24:55,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 7422 transitions. [2021-10-13 07:24:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2021-10-13 07:24:55,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:55,980 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 7, 6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:56,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:56,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:56,189 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:56,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:56,190 INFO L82 PathProgramCache]: Analyzing trace with hash -11640254, now seen corresponding path program 1 times [2021-10-13 07:24:56,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:56,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175595570] [2021-10-13 07:24:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:56,191 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:56,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:56,191 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:56,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 07:24:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:58,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:24:58,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 1163 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-13 07:24:58,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 1163 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-13 07:24:59,758 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:59,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175595570] [2021-10-13 07:24:59,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175595570] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:59,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:59,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:59,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047408207] [2021-10-13 07:24:59,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:59,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:59,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:59,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:59,761 INFO L87 Difference]: Start difference. First operand 5443 states and 7422 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:00,004 INFO L93 Difference]: Finished difference Result 11473 states and 15923 transitions. [2021-10-13 07:25:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:25:00,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 436 [2021-10-13 07:25:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:00,020 INFO L225 Difference]: With dead ends: 11473 [2021-10-13 07:25:00,020 INFO L226 Difference]: Without dead ends: 6051 [2021-10-13 07:25:00,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 869 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2021-10-13 07:25:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 6019. [2021-10-13 07:25:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6019 states, 6018 states have (on average 1.34230641409106) internal successors, (8078), 6018 states have internal predecessors, (8078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6019 states to 6019 states and 8078 transitions. [2021-10-13 07:25:00,212 INFO L78 Accepts]: Start accepts. Automaton has 6019 states and 8078 transitions. Word has length 436 [2021-10-13 07:25:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:00,213 INFO L470 AbstractCegarLoop]: Abstraction has 6019 states and 8078 transitions. [2021-10-13 07:25:00,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 6019 states and 8078 transitions. [2021-10-13 07:25:00,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-10-13 07:25:00,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:00,224 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 8, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:00,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:00,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:00,445 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:00,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1411824547, now seen corresponding path program 1 times [2021-10-13 07:25:00,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:00,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215094883] [2021-10-13 07:25:00,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:00,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:00,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:00,448 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:00,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:25:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:02,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:25:02,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 1352 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2021-10-13 07:25:03,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 1352 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2021-10-13 07:25:04,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:04,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215094883] [2021-10-13 07:25:04,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215094883] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:04,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:04,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:25:04,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031901304] [2021-10-13 07:25:04,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:25:04,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:25:04,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:04,565 INFO L87 Difference]: Start difference. First operand 6019 states and 8078 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:04,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:04,826 INFO L93 Difference]: Finished difference Result 11273 states and 14979 transitions. [2021-10-13 07:25:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:25:04,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 469 [2021-10-13 07:25:04,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:04,839 INFO L225 Difference]: With dead ends: 11273 [2021-10-13 07:25:04,840 INFO L226 Difference]: Without dead ends: 4825 [2021-10-13 07:25:04,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 935 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2021-10-13 07:25:04,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4343. [2021-10-13 07:25:04,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4343 states, 4342 states have (on average 1.2584062643942884) internal successors, (5464), 4342 states have internal predecessors, (5464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:05,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4343 states to 4343 states and 5464 transitions. [2021-10-13 07:25:05,007 INFO L78 Accepts]: Start accepts. Automaton has 4343 states and 5464 transitions. Word has length 469 [2021-10-13 07:25:05,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:05,008 INFO L470 AbstractCegarLoop]: Abstraction has 4343 states and 5464 transitions. [2021-10-13 07:25:05,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4343 states and 5464 transitions. [2021-10-13 07:25:05,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2021-10-13 07:25:05,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:05,017 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 9, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:05,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:05,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:05,241 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:05,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2021178619, now seen corresponding path program 1 times [2021-10-13 07:25:05,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:05,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396690927] [2021-10-13 07:25:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:05,242 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:05,243 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:05,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:25:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:07,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:25:07,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-13 07:25:08,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-13 07:25:09,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:09,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396690927] [2021-10-13 07:25:09,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396690927] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:09,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [428715464] [2021-10-13 07:25:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:09,465 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:09,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:25:09,476 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:25:09,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-10-13 07:25:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:13,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:25:13,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-13 07:25:14,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-13 07:25:15,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [428715464] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:15,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837275726] [2021-10-13 07:25:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:15,023 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:15,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:15,024 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:15,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 07:25:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:18,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:25:18,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-13 07:25:19,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2728 backedges. 1309 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2021-10-13 07:25:20,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837275726] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:20,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:25:20,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:25:20,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555809300] [2021-10-13 07:25:20,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:25:20,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:25:20,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:25:20,243 INFO L87 Difference]: Start difference. First operand 4343 states and 5464 transitions. Second operand has 6 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:20,687 INFO L93 Difference]: Finished difference Result 5670 states and 7101 transitions. [2021-10-13 07:25:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:25:20,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 507 [2021-10-13 07:25:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:20,689 INFO L225 Difference]: With dead ends: 5670 [2021-10-13 07:25:20,689 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:25:20,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3042 GetRequests, 3035 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:25:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:25:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:25:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:25:20,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 507 [2021-10-13 07:25:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:20,697 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:25:20,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:25:20,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:25:20,701 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:25:20,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:20,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:21,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:21,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:21,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:25:21,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:21,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:23,735 INFO L853 garLoopResultBuilder]: At program point L168(lines 167 609) the Hoare annotation is: (let ((.cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse1 .cse3) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1) (and .cse1 .cse2 .cse3))) [2021-10-13 07:25:23,736 INFO L853 garLoopResultBuilder]: At program point L135(lines 128 622) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) .cse2))) [2021-10-13 07:25:23,736 INFO L857 garLoopResultBuilder]: For program point L102(line 102) no Hoare annotation was computed. [2021-10-13 07:25:23,736 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 659) no Hoare annotation was computed. [2021-10-13 07:25:23,736 INFO L857 garLoopResultBuilder]: For program point L466(lines 466 470) no Hoare annotation was computed. [2021-10-13 07:25:23,736 INFO L857 garLoopResultBuilder]: For program point L632(lines 632 656) no Hoare annotation was computed. [2021-10-13 07:25:23,736 INFO L857 garLoopResultBuilder]: For program point L566(lines 566 570) no Hoare annotation was computed. [2021-10-13 07:25:23,736 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 504) no Hoare annotation was computed. [2021-10-13 07:25:23,736 INFO L857 garLoopResultBuilder]: For program point L566-2(lines 566 570) no Hoare annotation was computed. [2021-10-13 07:25:23,736 INFO L857 garLoopResultBuilder]: For program point L500-2(lines 211 592) no Hoare annotation was computed. [2021-10-13 07:25:23,736 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 597) no Hoare annotation was computed. [2021-10-13 07:25:23,737 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 608) no Hoare annotation was computed. [2021-10-13 07:25:23,737 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 619) no Hoare annotation was computed. [2021-10-13 07:25:23,737 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 630) no Hoare annotation was computed. [2021-10-13 07:25:23,737 INFO L857 garLoopResultBuilder]: For program point L666(lines 666 670) no Hoare annotation was computed. [2021-10-13 07:25:23,737 INFO L857 garLoopResultBuilder]: For program point L633(lines 633 642) no Hoare annotation was computed. [2021-10-13 07:25:23,737 INFO L857 garLoopResultBuilder]: For program point L666-2(lines 666 670) no Hoare annotation was computed. [2021-10-13 07:25:23,737 INFO L857 garLoopResultBuilder]: For program point L633-2(lines 632 654) no Hoare annotation was computed. [2021-10-13 07:25:23,737 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 274) no Hoare annotation was computed. [2021-10-13 07:25:23,737 INFO L853 garLoopResultBuilder]: At program point L204(lines 200 598) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse2 .cse0 .cse1) (and .cse2 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse1))) [2021-10-13 07:25:23,737 INFO L853 garLoopResultBuilder]: At program point L105(lines 104 630) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2))) [2021-10-13 07:25:23,737 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 308) no Hoare annotation was computed. [2021-10-13 07:25:23,738 INFO L857 garLoopResultBuilder]: For program point L304-2(lines 211 592) no Hoare annotation was computed. [2021-10-13 07:25:23,738 INFO L857 garLoopResultBuilder]: For program point L635(lines 635 639) no Hoare annotation was computed. [2021-10-13 07:25:23,738 INFO L857 garLoopResultBuilder]: For program point L206(lines 206 596) no Hoare annotation was computed. [2021-10-13 07:25:23,738 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 607) no Hoare annotation was computed. [2021-10-13 07:25:23,738 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 618) no Hoare annotation was computed. [2021-10-13 07:25:23,738 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 629) no Hoare annotation was computed. [2021-10-13 07:25:23,738 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 343) no Hoare annotation was computed. [2021-10-13 07:25:23,738 INFO L857 garLoopResultBuilder]: For program point L339-2(lines 211 592) no Hoare annotation was computed. [2021-10-13 07:25:23,738 INFO L860 garLoopResultBuilder]: At program point L207(lines 206 596) the Hoare annotation is: true [2021-10-13 07:25:23,738 INFO L853 garLoopResultBuilder]: At program point L174(lines 170 608) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse3 .cse2))) [2021-10-13 07:25:23,738 INFO L853 garLoopResultBuilder]: At program point L141(lines 137 619) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32)) .cse2) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse3 .cse2))) [2021-10-13 07:25:23,738 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 83) no Hoare annotation was computed. [2021-10-13 07:25:23,738 INFO L857 garLoopResultBuilder]: For program point L439(lines 439 451) no Hoare annotation was computed. [2021-10-13 07:25:23,739 INFO L853 garLoopResultBuilder]: At program point L406(lines 397 417) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-13 07:25:23,739 INFO L857 garLoopResultBuilder]: For program point L439-2(lines 439 451) no Hoare annotation was computed. [2021-10-13 07:25:23,739 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 606) no Hoare annotation was computed. [2021-10-13 07:25:23,739 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 617) no Hoare annotation was computed. [2021-10-13 07:25:23,739 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 628) no Hoare annotation was computed. [2021-10-13 07:25:23,739 INFO L860 garLoopResultBuilder]: At program point L210(lines 209 595) the Hoare annotation is: true [2021-10-13 07:25:23,739 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 82) no Hoare annotation was computed. [2021-10-13 07:25:23,739 INFO L857 garLoopResultBuilder]: For program point L78-2(lines 75 83) no Hoare annotation was computed. [2021-10-13 07:25:23,739 INFO L857 garLoopResultBuilder]: For program point L541(lines 541 546) no Hoare annotation was computed. [2021-10-13 07:25:23,739 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 447) no Hoare annotation was computed. [2021-10-13 07:25:23,739 INFO L857 garLoopResultBuilder]: For program point L409(lines 409 413) no Hoare annotation was computed. [2021-10-13 07:25:23,739 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 249) no Hoare annotation was computed. [2021-10-13 07:25:23,740 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 605) no Hoare annotation was computed. [2021-10-13 07:25:23,740 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 616) no Hoare annotation was computed. [2021-10-13 07:25:23,740 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 627) no Hoare annotation was computed. [2021-10-13 07:25:23,740 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 586) no Hoare annotation was computed. [2021-10-13 07:25:23,740 INFO L857 garLoopResultBuilder]: For program point L576-1(lines 576 586) no Hoare annotation was computed. [2021-10-13 07:25:23,740 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 514) no Hoare annotation was computed. [2021-10-13 07:25:23,740 INFO L857 garLoopResultBuilder]: For program point L510-2(lines 510 514) no Hoare annotation was computed. [2021-10-13 07:25:23,740 INFO L853 garLoopResultBuilder]: At program point L180(lines 176 606) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-13 07:25:23,740 INFO L853 garLoopResultBuilder]: At program point L147(lines 143 617) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-13 07:25:23,740 INFO L857 garLoopResultBuilder]: For program point L478(lines 478 482) no Hoare annotation was computed. [2021-10-13 07:25:23,740 INFO L853 garLoopResultBuilder]: At program point L214(lines 107 629) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2))) [2021-10-13 07:25:23,740 INFO L860 garLoopResultBuilder]: At program point L677(lines 67 679) the Hoare annotation is: true [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L644(lines 644 650) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 379) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L314(lines 314 318) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L314-2(lines 314 318) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 604) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 615) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 626) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L860 garLoopResultBuilder]: At program point L678(lines 12 680) the Hoare annotation is: true [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L579(lines 579 583) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L85(lines 85 93) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 67 679) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 378) no Hoare annotation was computed. [2021-10-13 07:25:23,741 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L350-1(lines 350 378) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 264) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 603) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 614) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 625) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 90) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 375) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L219(lines 219 223) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L853 garLoopResultBuilder]: At program point L186(lines 182 604) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1) (and .cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1))) [2021-10-13 07:25:23,742 INFO L853 garLoopResultBuilder]: At program point L153(lines 149 615) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L219-2(lines 211 592) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L253(lines 253 258) no Hoare annotation was computed. [2021-10-13 07:25:23,742 INFO L857 garLoopResultBuilder]: For program point L551(lines 551 559) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L287(lines 287 291) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L287-2(lines 211 592) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 602) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 613) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 624) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 418) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L354(lines 354 374) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L853 garLoopResultBuilder]: At program point L123(lines 119 625) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse2))) [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 394) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L554(lines 554 558) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L521(lines 521 526) no Hoare annotation was computed. [2021-10-13 07:25:23,743 INFO L857 garLoopResultBuilder]: For program point L356(lines 356 360) no Hoare annotation was computed. [2021-10-13 07:25:23,744 INFO L857 garLoopResultBuilder]: For program point L323-1(lines 323 332) no Hoare annotation was computed. [2021-10-13 07:25:23,744 INFO L857 garLoopResultBuilder]: For program point L356-2(lines 354 372) no Hoare annotation was computed. [2021-10-13 07:25:23,744 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 601) no Hoare annotation was computed. [2021-10-13 07:25:23,744 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 612) no Hoare annotation was computed. [2021-10-13 07:25:23,744 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 623) no Hoare annotation was computed. [2021-10-13 07:25:23,744 INFO L853 garLoopResultBuilder]: At program point L555(lines 67 679) the Hoare annotation is: false [2021-10-13 07:25:23,744 INFO L857 garLoopResultBuilder]: For program point L489(lines 489 493) no Hoare annotation was computed. [2021-10-13 07:25:23,744 INFO L853 garLoopResultBuilder]: At program point L192(lines 188 602) the Hoare annotation is: (or (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) [2021-10-13 07:25:23,744 INFO L853 garLoopResultBuilder]: At program point L159(lines 155 613) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-13 07:25:23,744 INFO L853 garLoopResultBuilder]: At program point L126(lines 125 623) the Hoare annotation is: (and (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-13 07:25:23,744 INFO L857 garLoopResultBuilder]: For program point L457(lines 457 461) no Hoare annotation was computed. [2021-10-13 07:25:23,744 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:25:23,745 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 600) no Hoare annotation was computed. [2021-10-13 07:25:23,745 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 611) no Hoare annotation was computed. [2021-10-13 07:25:23,745 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 622) no Hoare annotation was computed. [2021-10-13 07:25:23,745 INFO L860 garLoopResultBuilder]: At program point L690(lines 681 692) the Hoare annotation is: true [2021-10-13 07:25:23,745 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 331) no Hoare annotation was computed. [2021-10-13 07:25:23,745 INFO L853 garLoopResultBuilder]: At program point L593(lines 101 661) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse7 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse4 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse10 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse6 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse9 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse8 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse5 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0) (and .cse2 .cse1) (and .cse3 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse4 .cse5 .cse2) (and (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse0) (and .cse3 .cse7 .cse1) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse8 .cse0 .cse1) (and .cse3 .cse9 .cse1) (and .cse4 .cse7 .cse2) (and .cse3 .cse10 .cse1) (and .cse6 .cse2) (and .cse4 .cse10 .cse2) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse6 .cse9) (and .cse8 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse3 .cse5 .cse1))) [2021-10-13 07:25:23,745 INFO L857 garLoopResultBuilder]: For program point L560(lines 560 564) no Hoare annotation was computed. [2021-10-13 07:25:23,745 INFO L857 garLoopResultBuilder]: For program point L428(lines 428 432) no Hoare annotation was computed. [2021-10-13 07:25:23,745 INFO L853 garLoopResultBuilder]: At program point L362(lines 344 380) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-13 07:25:23,745 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 599) no Hoare annotation was computed. [2021-10-13 07:25:23,746 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 610) no Hoare annotation was computed. [2021-10-13 07:25:23,746 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 621) no Hoare annotation was computed. [2021-10-13 07:25:23,746 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:25:23,746 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 673) no Hoare annotation was computed. [2021-10-13 07:25:23,746 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 532) no Hoare annotation was computed. [2021-10-13 07:25:23,746 INFO L857 garLoopResultBuilder]: For program point L462(lines 462 473) no Hoare annotation was computed. [2021-10-13 07:25:23,746 INFO L857 garLoopResultBuilder]: For program point L528-2(lines 211 592) no Hoare annotation was computed. [2021-10-13 07:25:23,746 INFO L853 garLoopResultBuilder]: At program point L396(lines 387 418) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-13 07:25:23,746 INFO L857 garLoopResultBuilder]: For program point L231(lines 231 242) no Hoare annotation was computed. [2021-10-13 07:25:23,750 INFO L853 garLoopResultBuilder]: At program point L198(lines 194 600) the Hoare annotation is: (let ((.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse3 .cse2))) [2021-10-13 07:25:23,750 INFO L853 garLoopResultBuilder]: At program point L165(lines 161 611) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse1) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1))) [2021-10-13 07:25:23,750 INFO L857 garLoopResultBuilder]: For program point L231-2(lines 231 242) no Hoare annotation was computed. [2021-10-13 07:25:23,750 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 368) no Hoare annotation was computed. [2021-10-13 07:25:23,750 INFO L860 garLoopResultBuilder]: At program point L662(lines 100 663) the Hoare annotation is: true [2021-10-13 07:25:23,750 INFO L857 garLoopResultBuilder]: For program point L398(lines 398 404) no Hoare annotation was computed. [2021-10-13 07:25:23,750 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 238) no Hoare annotation was computed. [2021-10-13 07:25:23,750 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 598) no Hoare annotation was computed. [2021-10-13 07:25:23,750 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 609) no Hoare annotation was computed. [2021-10-13 07:25:23,751 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 620) no Hoare annotation was computed. [2021-10-13 07:25:23,752 INFO L853 garLoopResultBuilder]: At program point L101-2(lines 101 661) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse7 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse4 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse10 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse6 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse9 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse8 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse5 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0) (and .cse2 .cse1) (and .cse3 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse4 .cse5 .cse2) (and (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse0) (and .cse3 .cse7 .cse1) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse8 .cse0 .cse1) (and .cse3 .cse9 .cse1) (and .cse4 .cse7 .cse2) (and .cse3 .cse10 .cse1) (and .cse6 .cse2) (and .cse4 .cse10 .cse2) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse6 .cse9) (and .cse8 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse3 .cse5 .cse1) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))))) [2021-10-13 07:25:23,755 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:25:23,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:25:23 BoogieIcfgContainer [2021-10-13 07:25:23,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:25:23,816 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:25:23,816 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:25:23,816 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:25:23,817 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:24:09" (3/4) ... [2021-10-13 07:25:23,820 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:25:23,837 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:25:23,838 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:25:23,839 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:25:23,840 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:25:23,934 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:25:23,934 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:25:23,936 INFO L168 Benchmark]: Toolchain (without parser) took 75891.19 ms. Allocated memory was 60.8 MB in the beginning and 585.1 MB in the end (delta: 524.3 MB). Free memory was 40.2 MB in the beginning and 233.1 MB in the end (delta: -192.9 MB). Peak memory consumption was 332.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:23,936 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 60.8 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:23,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.74 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 40.6 MB in the end (delta: -668.7 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:23,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.21 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 37.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:23,938 INFO L168 Benchmark]: Boogie Preprocessor took 78.64 ms. Allocated memory is still 60.8 MB. Free memory was 37.9 MB in the beginning and 35.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:23,938 INFO L168 Benchmark]: RCFGBuilder took 716.81 ms. Allocated memory is still 60.8 MB. Free memory was 35.6 MB in the beginning and 31.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:23,938 INFO L168 Benchmark]: TraceAbstraction took 74377.97 ms. Allocated memory was 60.8 MB in the beginning and 585.1 MB in the end (delta: 524.3 MB). Free memory was 31.0 MB in the beginning and 243.6 MB in the end (delta: -212.6 MB). Peak memory consumption was 426.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:23,939 INFO L168 Benchmark]: Witness Printer took 118.27 ms. Allocated memory is still 585.1 MB. Free memory was 243.6 MB in the beginning and 233.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:23,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 60.8 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 500.74 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 40.6 MB in the end (delta: -668.7 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.21 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 37.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.64 ms. Allocated memory is still 60.8 MB. Free memory was 37.9 MB in the beginning and 35.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 716.81 ms. Allocated memory is still 60.8 MB. Free memory was 35.6 MB in the beginning and 31.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 74377.97 ms. Allocated memory was 60.8 MB in the beginning and 585.1 MB in the end (delta: 524.3 MB). Free memory was 31.0 MB in the beginning and 243.6 MB in the end (delta: -212.6 MB). Peak memory consumption was 426.5 MB. Max. memory is 16.1 GB. * Witness Printer took 118.27 ms. Allocated memory is still 585.1 MB. Free memory was 243.6 MB in the beginning and 233.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 673]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 140 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74259.5ms, OverallIterations: 22, TraceHistogramMax: 16, EmptinessCheckTime: 158.3ms, AutomataDifference: 4675.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2422.9ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4726 SDtfs, 1672 SDslu, 3363 SDs, 0 SdLazy, 2469 SolverSat, 524 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2300.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14166 GetRequests, 14133 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 115.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6019occurred in iteration=20, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1586.0ms AutomataMinimizationTime, 22 MinimizatonAttempts, 3196 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 29 LocationsWithAnnotation, 29 PreInvPairs, 284 NumberOfFragments, 1109 HoareAnnotationTreeSize, 29 FomulaSimplifications, 7145 FormulaSimplificationTreeSizeReduction, 556.0ms HoareSimplificationTime, 29 FomulaSimplificationsInter, 1147 FormulaSimplificationTreeSizeReductionInter, 1854.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 477.2ms SsaConstructionTime, 1966.9ms SatisfiabilityAnalysisTime, 29701.0ms InterpolantComputationTime, 7105 NumberOfCodeBlocks, 7105 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 14158 ConstructedInterpolants, 0 QuantifiedInterpolants, 19220 SizeOfPredicates, 9 NumberOfNonLiveVariables, 8455 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 52 InterpolantComputations, 40 PerfectInterpolantSequences, 51164/51476 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: (((8576bv32 == s__s3__tmp__next_state___0 && !(8672bv32 == s__state)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(8640bv32 == s__state) - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && 8448bv32 == s__state) && !(s__hit == 0bv32)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 2bv32 == blastFlag)) || ((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state)) || ((8448bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag) - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: (((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || ((!(8672bv32 == s__state) && blastFlag == 0bv32) && !(8640bv32 == s__state)) - InvariantResult [Line: 206]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 397]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 155]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: (((!(s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || ((3bv32 == blastFlag && !(s__hit == 0bv32)) && !(8640bv32 == s__state))) || ((3bv32 == blastFlag && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8640bv32 == s__state)) - InvariantResult [Line: 209]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: (((((((((((((((((((((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) || 3bv32 == s__state) || (!(s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 8640bv32 == s__state) && !(s__hit == 0bv32))) || ((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (8544bv32 == s__state && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8640bv32))) || ((8576bv32 == s__s3__tmp__next_state___0 && 8592bv32 == s__state) && 2bv32 == blastFlag)) || (8560bv32 == s__state && 2bv32 == blastFlag)) || ((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 8592bv32 == s__state) && !(s__hit == 0bv32))) || ((8576bv32 == s__s3__tmp__next_state___0 && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (3bv32 == blastFlag && !(s__hit == 0bv32))) || ((!(4bv32 == blastFlag) && 8608bv32 == s__state) && !(s__hit == 0bv32))) || (8528bv32 == s__state && 2bv32 == blastFlag)) || ((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state)) || (8496bv32 == s__state && blastFlag == 1bv32)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8640bv32 == s__state) && 2bv32 == blastFlag) - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || ((!(8672bv32 == s__state) && blastFlag == 1bv32) && !(8640bv32 == s__state))) || (((!(8672bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) || 3bv32 == s__state) || (!(s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 8640bv32 == s__state) && !(s__hit == 0bv32))) || ((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (8544bv32 == s__state && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8640bv32))) || ((8576bv32 == s__s3__tmp__next_state___0 && 8592bv32 == s__state) && 2bv32 == blastFlag)) || (8560bv32 == s__state && 2bv32 == blastFlag)) || ((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && 2bv32 == blastFlag)) || ((!(4bv32 == blastFlag) && 8592bv32 == s__state) && !(s__hit == 0bv32))) || ((8576bv32 == s__s3__tmp__next_state___0 && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (3bv32 == blastFlag && !(s__hit == 0bv32))) || ((!(4bv32 == blastFlag) && 8608bv32 == s__state) && !(s__hit == 0bv32))) || (8528bv32 == s__state && 2bv32 == blastFlag)) || ((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && 8448bv32 == s__state)) || (8496bv32 == s__state && blastFlag == 1bv32)) || ((8576bv32 == s__s3__tmp__next_state___0 && 8640bv32 == s__state) && 2bv32 == blastFlag)) || (8464bv32 == s__state && blastFlag == 0bv32) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 681]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 387]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 344]: Loop Invariant Derived loop invariant: (((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((!(8672bv32 == s__state) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 188]: Loop Invariant Derived loop invariant: ((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) || ((8640bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8672bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((8576bv32 == s__s3__tmp__next_state___0 && !(8672bv32 == s__state)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: (((8576bv32 == s__s3__tmp__next_state___0 && !(8672bv32 == s__state)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) || (((!(8672bv32 == s__state) && !(4bv32 == blastFlag)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:25:24,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0da9b19-87a1-4a4d-b30f-286c3fc60ecc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...