./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_4.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_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/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_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/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_699e6cce-3f28-42f5-8c52-83da12133398/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 7a02d09c3bd79dd383aa53724ac7940e13c97792 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/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_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/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_699e6cce-3f28-42f5-8c52-83da12133398/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 7a02d09c3bd79dd383aa53724ac7940e13c97792 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:49:49,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:49:49,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:49:49,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:49:49,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:49:49,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:49:49,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:49:49,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:49:49,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:49:49,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:49:49,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:49:49,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:49:49,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:49:49,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:49:49,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:49:49,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:49:49,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:49:49,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:49:49,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:49:49,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:49:49,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:49:49,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:49:49,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:49:49,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:49:49,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:49:49,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:49:49,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:49:49,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:49:49,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:49:49,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:49:49,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:49:49,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:49:49,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:49:49,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:49:49,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:49:49,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:49:49,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:49:49,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:49:49,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:49:49,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:49:49,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:49:49,261 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:49:49,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:49:49,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:49:49,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:49:49,319 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:49:49,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:49:49,320 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:49:49,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:49:49,321 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:49:49,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:49:49,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:49:49,323 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:49:49,323 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:49:49,323 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:49:49,324 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:49:49,324 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:49:49,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:49:49,325 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:49:49,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:49:49,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:49:49,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:49:49,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:49:49,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:49:49,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:49:49,327 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:49:49,328 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:49:49,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:49:49,328 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:49:49,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:49:49,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:49:49,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:49:49,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:49:49,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:49:49,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:49:49,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:49:49,331 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:49:49,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:49:49,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:49:49,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:49:49,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:49:49,332 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_699e6cce-3f28-42f5-8c52-83da12133398/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a02d09c3bd79dd383aa53724ac7940e13c97792 [2021-10-13 07:49:49,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:49:49,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:49:49,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:49:49,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:49:49,752 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:49:49,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c [2021-10-13 07:49:49,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/data/7e032f8da/33e83220419942469afa2573fce06fcd/FLAG3722544f2 [2021-10-13 07:49:50,543 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:49:50,544 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c [2021-10-13 07:49:50,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/data/7e032f8da/33e83220419942469afa2573fce06fcd/FLAG3722544f2 [2021-10-13 07:49:50,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/data/7e032f8da/33e83220419942469afa2573fce06fcd [2021-10-13 07:49:50,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:49:50,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:49:50,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:49:50,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:49:50,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:49:50,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:49:50" (1/1) ... [2021-10-13 07:49:50,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58345bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:50, skipping insertion in model container [2021-10-13 07:49:50,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:49:50" (1/1) ... [2021-10-13 07:49:50,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:49:50,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:49:51,282 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_699e6cce-3f28-42f5-8c52-83da12133398/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c[42370,42383] [2021-10-13 07:49:51,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:49:51,302 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:49:51,419 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_699e6cce-3f28-42f5-8c52-83da12133398/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c[42370,42383] [2021-10-13 07:49:51,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:49:51,454 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:49:51,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51 WrapperNode [2021-10-13 07:49:51,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:49:51,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:49:51,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:49:51,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:49:51,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (1/1) ... [2021-10-13 07:49:51,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (1/1) ... [2021-10-13 07:49:51,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:49:51,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:49:51,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:49:51,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:49:51,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (1/1) ... [2021-10-13 07:49:51,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (1/1) ... [2021-10-13 07:49:51,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (1/1) ... [2021-10-13 07:49:51,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (1/1) ... [2021-10-13 07:49:51,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (1/1) ... [2021-10-13 07:49:51,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (1/1) ... [2021-10-13 07:49:51,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (1/1) ... [2021-10-13 07:49:51,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:49:51,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:49:51,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:49:51,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:49:51,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (1/1) ... [2021-10-13 07:49:51,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:49:51,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:49:51,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:49:51,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:49:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:49:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:49:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:49:51,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:49:51,919 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:49:52,713 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:49:52,714 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:49:53,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:49:53,035 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:49:53,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:49:53 BoogieIcfgContainer [2021-10-13 07:49:53,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:49:53,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:49:53,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:49:53,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:49:53,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:49:50" (1/3) ... [2021-10-13 07:49:53,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50abd503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:49:53, skipping insertion in model container [2021-10-13 07:49:53,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:51" (2/3) ... [2021-10-13 07:49:53,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50abd503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:49:53, skipping insertion in model container [2021-10-13 07:49:53,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:49:53" (3/3) ... [2021-10-13 07:49:53,049 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_4.cil.c [2021-10-13 07:49:53,056 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:49:53,056 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:49:53,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:49:53,122 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 07:49:53,122 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:49:53,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 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 07:49:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 07:49:53,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:53,155 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 07:49:53,155 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:53,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:53,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1684671645, now seen corresponding path program 1 times [2021-10-13 07:49:53,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:49:53,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706098520] [2021-10-13 07:49:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:53,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:49:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:53,478 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 07:49:53,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:49:53,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706098520] [2021-10-13 07:49:53,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706098520] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:53,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:53,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:49:53,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016418240] [2021-10-13 07:49:53,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:49:53,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:49:53,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:49:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:49:53,532 INFO L87 Difference]: Start difference. First operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 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 07:49:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:53,803 INFO L93 Difference]: Finished difference Result 231 states and 400 transitions. [2021-10-13 07:49:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:49:53,805 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 07:49:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:53,823 INFO L225 Difference]: With dead ends: 231 [2021-10-13 07:49:53,824 INFO L226 Difference]: Without dead ends: 121 [2021-10-13 07:49:53,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:49:53,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-13 07:49:53,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2021-10-13 07:49:53,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 118 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 07:49:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2021-10-13 07:49:53,887 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 39 [2021-10-13 07:49:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:53,888 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2021-10-13 07:49:53,889 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 07:49:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2021-10-13 07:49:53,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 07:49:53,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:53,893 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 07:49:53,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:49:53,893 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:53,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:53,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1865009877, now seen corresponding path program 1 times [2021-10-13 07:49:53,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:49:53,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559615964] [2021-10-13 07:49:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:53,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:49:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:53,984 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 07:49:53,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:49:53,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559615964] [2021-10-13 07:49:53,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559615964] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:53,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:53,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:49:53,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008908144] [2021-10-13 07:49:53,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:49:53,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:49:53,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:49:53,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:49:53,990 INFO L87 Difference]: Start difference. First operand 119 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 07:49:54,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:54,142 INFO L93 Difference]: Finished difference Result 257 states and 382 transitions. [2021-10-13 07:49:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:49:54,143 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 07:49:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:54,145 INFO L225 Difference]: With dead ends: 257 [2021-10-13 07:49:54,146 INFO L226 Difference]: Without dead ends: 140 [2021-10-13 07:49:54,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 07:49:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-13 07:49:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-10-13 07:49:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4306569343065694) internal successors, (196), 137 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 07:49:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2021-10-13 07:49:54,162 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 53 [2021-10-13 07:49:54,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:54,163 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2021-10-13 07:49:54,163 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 07:49:54,164 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2021-10-13 07:49:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 07:49:54,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:54,168 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 07:49:54,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:49:54,169 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:54,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1090970101, now seen corresponding path program 1 times [2021-10-13 07:49:54,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:49:54,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595942204] [2021-10-13 07:49:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:54,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:49:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:54,296 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 07:49:54,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:49:54,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595942204] [2021-10-13 07:49:54,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595942204] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:54,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:54,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:49:54,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746459662] [2021-10-13 07:49:54,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:49:54,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:49:54,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:49:54,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:49:54,301 INFO L87 Difference]: Start difference. First operand 138 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 07:49:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:54,521 INFO L93 Difference]: Finished difference Result 319 states and 470 transitions. [2021-10-13 07:49:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:49:54,521 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 07:49:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:54,524 INFO L225 Difference]: With dead ends: 319 [2021-10-13 07:49:54,525 INFO L226 Difference]: Without dead ends: 183 [2021-10-13 07:49:54,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:49:54,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-13 07:49:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 176. [2021-10-13 07:49:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.36) internal successors, (238), 175 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 07:49:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2021-10-13 07:49:54,542 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 70 [2021-10-13 07:49:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:54,543 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2021-10-13 07:49:54,543 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 07:49:54,544 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2021-10-13 07:49:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-13 07:49:54,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:54,547 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, 1] [2021-10-13 07:49:54,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:49:54,547 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:54,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:54,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1985713164, now seen corresponding path program 1 times [2021-10-13 07:49:54,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:49:54,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700246436] [2021-10-13 07:49:54,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:54,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:49:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:54,642 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 07:49:54,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:49:54,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700246436] [2021-10-13 07:49:54,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700246436] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:54,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:54,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:49:54,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781592047] [2021-10-13 07:49:54,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:49:54,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:49:54,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:49:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:49:54,646 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 07:49:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:54,857 INFO L93 Difference]: Finished difference Result 383 states and 532 transitions. [2021-10-13 07:49:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:49:54,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 90 [2021-10-13 07:49:54,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:54,860 INFO L225 Difference]: With dead ends: 383 [2021-10-13 07:49:54,860 INFO L226 Difference]: Without dead ends: 209 [2021-10-13 07:49:54,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 07:49:54,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-13 07:49:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2021-10-13 07:49:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.3333333333333333) internal successors, (264), 198 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 07:49:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2021-10-13 07:49:54,876 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 90 [2021-10-13 07:49:54,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:54,877 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2021-10-13 07:49:54,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 07:49:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2021-10-13 07:49:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-13 07:49:54,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:54,880 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 07:49:54,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:49:54,881 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:54,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:54,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1020798635, now seen corresponding path program 1 times [2021-10-13 07:49:54,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:49:54,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929231184] [2021-10-13 07:49:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:54,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:49:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:55,136 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 07:49:55,137 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:49:55,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929231184] [2021-10-13 07:49:55,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929231184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:49:55,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323107711] [2021-10-13 07:49:55,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:55,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:49:55,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:49:55,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:49:55,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:49:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:55,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:49:55,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:55,923 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 07:49:55,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:49:56,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323107711] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:49:56,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [242860122] [2021-10-13 07:49:56,753 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2021-10-13 07:49:56,753 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:49:56,759 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:49:56,765 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:49:56,766 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:49:57,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:49:57,044 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:49:57,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:49:57,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:49:57,047 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:49:57,048 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:49:57,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:49:57,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-10-13 07:49:57,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:49:57,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:49:57,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:49:57,193 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 07:49:57,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:49:57,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:49:57,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:49:57,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:49:57,201 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:49:57,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:49:57,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:49:57,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:49:57,243 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 07:49:57,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:49:57,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:49:57,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:49:57,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:49:57,257 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:49:57,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:49:57,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:49:57,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:49:57,302 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 07:49:57,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:49:57,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:49:57,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:49:57,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:49:57,311 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:49:57,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:49:57,567 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:49:57,785 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.4 percent of original size [2021-10-13 07:49:57,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1128 [2021-10-13 07:49:57,905 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 07:49:57,906 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1137, output treesize:1128 [2021-10-13 07:49:57,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:58,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:49:58,134 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_22| 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 07:49:58,142 INFO L168 Benchmark]: Toolchain (without parser) took 7272.69 ms. Allocated memory was 86.0 MB in the beginning and 151.0 MB in the end (delta: 65.0 MB). Free memory was 52.9 MB in the beginning and 112.8 MB in the end (delta: -59.9 MB). Peak memory consumption was 55.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:58,143 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:49:58,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.24 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.8 MB in the beginning and 76.6 MB in the end (delta: -23.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:58,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.75 ms. Allocated memory is still 104.9 MB. Free memory was 76.2 MB in the beginning and 73.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:58,145 INFO L168 Benchmark]: Boogie Preprocessor took 96.50 ms. Allocated memory is still 104.9 MB. Free memory was 73.5 MB in the beginning and 71.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:58,145 INFO L168 Benchmark]: RCFGBuilder took 1384.87 ms. Allocated memory is still 104.9 MB. Free memory was 71.4 MB in the beginning and 55.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:58,146 INFO L168 Benchmark]: TraceAbstraction took 5100.19 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 55.2 MB in the beginning and 112.8 MB in the end (delta: -57.5 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:58,150 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 569.24 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.8 MB in the beginning and 76.6 MB in the end (delta: -23.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.75 ms. Allocated memory is still 104.9 MB. Free memory was 76.2 MB in the beginning and 73.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.50 ms. Allocated memory is still 104.9 MB. Free memory was 73.5 MB in the beginning and 71.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1384.87 ms. Allocated memory is still 104.9 MB. Free memory was 71.4 MB in the beginning and 55.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5100.19 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 55.2 MB in the beginning and 112.8 MB in the end (delta: -57.5 MB). Peak memory consumption was 37.8 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_22| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_22|: 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 07:49:58,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/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 07:50:01,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:50:01,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:50:01,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:50:01,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:50:01,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:50:01,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:50:01,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:50:01,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:50:01,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:50:01,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:50:01,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:50:01,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:50:01,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:50:01,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:50:01,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:50:01,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:50:01,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:50:01,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:50:01,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:50:01,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:50:01,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:50:01,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:50:01,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:50:01,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:50:01,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:50:01,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:50:01,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:50:01,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:50:01,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:50:01,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:50:01,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:50:01,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:50:01,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:50:01,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:50:01,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:50:01,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:50:01,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:50:01,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:50:01,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:50:01,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:50:01,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:50:01,283 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:50:01,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:50:01,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:50:01,286 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:50:01,286 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:50:01,286 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:50:01,287 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:50:01,287 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:50:01,287 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:50:01,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:50:01,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:50:01,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:50:01,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:50:01,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:50:01,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:50:01,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:50:01,292 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:50:01,293 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:50:01,293 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:50:01,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:50:01,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:50:01,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:50:01,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:50:01,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:50:01,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:50:01,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:50:01,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:50:01,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:50:01,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:50:01,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:50:01,296 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:50:01,297 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:50:01,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:50:01,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:50:01,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:50:01,298 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_699e6cce-3f28-42f5-8c52-83da12133398/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a02d09c3bd79dd383aa53724ac7940e13c97792 [2021-10-13 07:50:01,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:50:01,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:50:01,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:50:01,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:50:01,874 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:50:01,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c [2021-10-13 07:50:01,968 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/data/e89aef261/0367a893353942fdbecd5655f70faa4b/FLAG962af27b0 [2021-10-13 07:50:02,728 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:50:02,750 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c [2021-10-13 07:50:02,773 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/data/e89aef261/0367a893353942fdbecd5655f70faa4b/FLAG962af27b0 [2021-10-13 07:50:02,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/data/e89aef261/0367a893353942fdbecd5655f70faa4b [2021-10-13 07:50:03,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:50:03,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:50:03,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:50:03,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:50:03,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:50:03,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:02" (1/1) ... [2021-10-13 07:50:03,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c49bc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03, skipping insertion in model container [2021-10-13 07:50:03,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:02" (1/1) ... [2021-10-13 07:50:03,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:50:03,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:50:03,369 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_699e6cce-3f28-42f5-8c52-83da12133398/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c[42370,42383] [2021-10-13 07:50:03,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:50:03,391 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:50:03,496 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_699e6cce-3f28-42f5-8c52-83da12133398/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c[42370,42383] [2021-10-13 07:50:03,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:50:03,517 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:50:03,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03 WrapperNode [2021-10-13 07:50:03,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:50:03,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:50:03,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:50:03,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:50:03,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (1/1) ... [2021-10-13 07:50:03,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (1/1) ... [2021-10-13 07:50:03,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:50:03,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:50:03,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:50:03,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:50:03,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (1/1) ... [2021-10-13 07:50:03,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (1/1) ... [2021-10-13 07:50:03,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (1/1) ... [2021-10-13 07:50:03,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (1/1) ... [2021-10-13 07:50:03,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (1/1) ... [2021-10-13 07:50:03,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (1/1) ... [2021-10-13 07:50:03,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (1/1) ... [2021-10-13 07:50:03,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:50:03,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:50:03,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:50:03,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:50:03,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (1/1) ... [2021-10-13 07:50:03,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:50:03,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:50:03,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:50:03,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:50:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:50:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:50:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:50:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:50:03,924 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:50:04,611 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:50:04,612 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:50:04,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:50:04,623 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:50:04,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:04 BoogieIcfgContainer [2021-10-13 07:50:04,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:50:04,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:50:04,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:50:04,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:50:04,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:50:02" (1/3) ... [2021-10-13 07:50:04,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b934d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:04, skipping insertion in model container [2021-10-13 07:50:04,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:03" (2/3) ... [2021-10-13 07:50:04,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b934d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:04, skipping insertion in model container [2021-10-13 07:50:04,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:04" (3/3) ... [2021-10-13 07:50:04,635 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_4.cil.c [2021-10-13 07:50:04,642 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:50:04,642 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:50:04,710 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:50:04,722 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 07:50:04,722 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:50:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 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 07:50:04,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 07:50:04,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:04,793 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 07:50:04,794 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:04,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1632005994, now seen corresponding path program 1 times [2021-10-13 07:50:04,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:04,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215038155] [2021-10-13 07:50:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:04,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:04,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:04,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:04,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:50:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:04,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:50:04,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:05,249 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 07:50:05,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:05,463 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 07:50:05,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:05,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215038155] [2021-10-13 07:50:05,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215038155] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:05,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:05,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:05,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031660123] [2021-10-13 07:50:05,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:05,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:05,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:05,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:05,495 INFO L87 Difference]: Start difference. First operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 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 07:50:05,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:05,733 INFO L93 Difference]: Finished difference Result 302 states and 514 transitions. [2021-10-13 07:50:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:05,736 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 07:50:05,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:05,750 INFO L225 Difference]: With dead ends: 302 [2021-10-13 07:50:05,750 INFO L226 Difference]: Without dead ends: 149 [2021-10-13 07:50:05,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:05,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-13 07:50:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2021-10-13 07:50:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5103448275862068) internal successors, (219), 145 states have internal predecessors, (219), 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 07:50:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2021-10-13 07:50:05,810 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 44 [2021-10-13 07:50:05,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:05,811 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2021-10-13 07:50:05,812 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 07:50:05,812 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2021-10-13 07:50:05,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 07:50:05,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:05,816 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 07:50:05,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:06,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:06,034 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:06,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:06,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1928463050, now seen corresponding path program 1 times [2021-10-13 07:50:06,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:06,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943583803] [2021-10-13 07:50:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:06,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:06,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:06,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:06,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:50:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:06,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:06,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:06,418 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 07:50:06,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:06,620 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 07:50:06,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:06,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943583803] [2021-10-13 07:50:06,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943583803] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:06,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:06,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:06,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99003325] [2021-10-13 07:50:06,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:06,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:06,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:06,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:06,628 INFO L87 Difference]: Start difference. First operand 146 states and 219 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 07:50:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:06,832 INFO L93 Difference]: Finished difference Result 309 states and 470 transitions. [2021-10-13 07:50:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:06,833 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 07:50:06,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:06,836 INFO L225 Difference]: With dead ends: 309 [2021-10-13 07:50:06,837 INFO L226 Difference]: Without dead ends: 171 [2021-10-13 07:50:06,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:06,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-13 07:50:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-10-13 07:50:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4759036144578312) internal successors, (245), 166 states have internal predecessors, (245), 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 07:50:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 245 transitions. [2021-10-13 07:50:06,855 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 245 transitions. Word has length 60 [2021-10-13 07:50:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:06,856 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 245 transitions. [2021-10-13 07:50:06,856 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 07:50:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 245 transitions. [2021-10-13 07:50:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-13 07:50:06,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:06,861 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 07:50:06,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:07,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:07,075 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:07,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:07,076 INFO L82 PathProgramCache]: Analyzing trace with hash 81763384, now seen corresponding path program 1 times [2021-10-13 07:50:07,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:07,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756441090] [2021-10-13 07:50:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:07,078 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:07,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:07,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:07,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:50:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:07,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:07,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:07,530 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 07:50:07,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:07,776 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 07:50:07,776 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:07,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756441090] [2021-10-13 07:50:07,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756441090] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:07,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:07,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:07,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243985007] [2021-10-13 07:50:07,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:07,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:07,780 INFO L87 Difference]: Start difference. First operand 167 states and 245 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 07:50:08,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:08,009 INFO L93 Difference]: Finished difference Result 373 states and 563 transitions. [2021-10-13 07:50:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:08,010 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 07:50:08,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:08,013 INFO L225 Difference]: With dead ends: 373 [2021-10-13 07:50:08,013 INFO L226 Difference]: Without dead ends: 214 [2021-10-13 07:50:08,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:08,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-13 07:50:08,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 209. [2021-10-13 07:50:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4038461538461537) internal successors, (292), 208 states have internal predecessors, (292), 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 07:50:08,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 292 transitions. [2021-10-13 07:50:08,032 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 292 transitions. Word has length 81 [2021-10-13 07:50:08,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:08,033 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 292 transitions. [2021-10-13 07:50:08,033 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 07:50:08,034 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 292 transitions. [2021-10-13 07:50:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-13 07:50:08,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:08,037 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 07:50:08,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:08,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:08,257 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:08,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:08,258 INFO L82 PathProgramCache]: Analyzing trace with hash 329909878, now seen corresponding path program 1 times [2021-10-13 07:50:08,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:08,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176158014] [2021-10-13 07:50:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:08,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:08,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:08,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:08,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:50:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:08,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:08,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:08,794 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 07:50:08,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:09,068 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 07:50:09,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:09,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176158014] [2021-10-13 07:50:09,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176158014] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:09,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:09,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:09,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298050249] [2021-10-13 07:50:09,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:09,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:09,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:09,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:09,071 INFO L87 Difference]: Start difference. First operand 209 states and 292 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 07:50:09,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:09,243 INFO L93 Difference]: Finished difference Result 437 states and 619 transitions. [2021-10-13 07:50:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:09,244 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 07:50:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:09,246 INFO L225 Difference]: With dead ends: 437 [2021-10-13 07:50:09,247 INFO L226 Difference]: Without dead ends: 236 [2021-10-13 07:50:09,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:09,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-13 07:50:09,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2021-10-13 07:50:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.3852813852813852) internal successors, (320), 231 states have internal predecessors, (320), 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 07:50:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 320 transitions. [2021-10-13 07:50:09,263 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 320 transitions. Word has length 81 [2021-10-13 07:50:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:09,264 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 320 transitions. [2021-10-13 07:50:09,264 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 07:50:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 320 transitions. [2021-10-13 07:50:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-13 07:50:09,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:09,267 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, 1] [2021-10-13 07:50:09,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:50:09,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:09,502 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:09,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:09,504 INFO L82 PathProgramCache]: Analyzing trace with hash 265533208, now seen corresponding path program 1 times [2021-10-13 07:50:09,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:09,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589077103] [2021-10-13 07:50:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:09,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:09,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:09,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:09,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:50:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:09,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:09,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:10,148 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 07:50:10,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:10,463 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 07:50:10,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:10,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589077103] [2021-10-13 07:50:10,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589077103] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:10,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:10,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:10,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712943947] [2021-10-13 07:50:10,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:10,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:10,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:10,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:10,468 INFO L87 Difference]: Start difference. First operand 232 states and 320 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 07:50:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:10,644 INFO L93 Difference]: Finished difference Result 494 states and 695 transitions. [2021-10-13 07:50:10,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:10,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 102 [2021-10-13 07:50:10,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:10,648 INFO L225 Difference]: With dead ends: 494 [2021-10-13 07:50:10,648 INFO L226 Difference]: Without dead ends: 270 [2021-10-13 07:50:10,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:10,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-13 07:50:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 257. [2021-10-13 07:50:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.3671875) internal successors, (350), 256 states have internal predecessors, (350), 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 07:50:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 350 transitions. [2021-10-13 07:50:10,662 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 350 transitions. Word has length 102 [2021-10-13 07:50:10,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:10,663 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 350 transitions. [2021-10-13 07:50:10,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 07:50:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 350 transitions. [2021-10-13 07:50:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-13 07:50:10,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:10,666 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 07:50:10,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:10,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:10,880 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:10,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:10,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1932137040, now seen corresponding path program 1 times [2021-10-13 07:50:10,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:10,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222850999] [2021-10-13 07:50:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:10,883 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:10,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:10,884 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:10,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:50:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:11,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:11,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:11,649 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 07:50:11,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:11,995 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 07:50:11,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:11,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222850999] [2021-10-13 07:50:11,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222850999] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:11,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:11,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:50:11,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858729043] [2021-10-13 07:50:11,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:50:11,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:11,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:50:11,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:11,997 INFO L87 Difference]: Start difference. First operand 257 states and 350 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 07:50:12,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:12,075 INFO L93 Difference]: Finished difference Result 997 states and 1358 transitions. [2021-10-13 07:50:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:50:12,076 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 07:50:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:12,083 INFO L225 Difference]: With dead ends: 997 [2021-10-13 07:50:12,083 INFO L226 Difference]: Without dead ends: 748 [2021-10-13 07:50:12,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:12,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-10-13 07:50:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-10-13 07:50:12,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.357429718875502) internal successors, (1014), 747 states have internal predecessors, (1014), 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 07:50:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1014 transitions. [2021-10-13 07:50:12,122 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1014 transitions. Word has length 121 [2021-10-13 07:50:12,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:12,122 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 1014 transitions. [2021-10-13 07:50:12,123 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 07:50:12,123 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1014 transitions. [2021-10-13 07:50:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:50:12,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:12,130 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 07:50:12,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:12,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:12,345 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:12,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:12,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1552830339, now seen corresponding path program 1 times [2021-10-13 07:50:12,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:12,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582852250] [2021-10-13 07:50:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:12,346 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:12,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:12,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:50:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:12,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:12,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:13,076 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 07:50:13,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:13,464 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 07:50:13,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:13,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582852250] [2021-10-13 07:50:13,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582852250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:13,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:13,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:13,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568230989] [2021-10-13 07:50:13,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:13,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:13,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:13,467 INFO L87 Difference]: Start difference. First operand 748 states and 1014 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 07:50:13,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:13,534 INFO L93 Difference]: Finished difference Result 1732 states and 2348 transitions. [2021-10-13 07:50:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:13,535 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 07:50:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:13,543 INFO L225 Difference]: With dead ends: 1732 [2021-10-13 07:50:13,543 INFO L226 Difference]: Without dead ends: 992 [2021-10-13 07:50:13,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-10-13 07:50:13,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 992. [2021-10-13 07:50:13,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 991 states have (on average 1.355196770938446) internal successors, (1343), 991 states have internal predecessors, (1343), 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 07:50:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1343 transitions. [2021-10-13 07:50:13,585 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1343 transitions. Word has length 122 [2021-10-13 07:50:13,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:13,586 INFO L470 AbstractCegarLoop]: Abstraction has 992 states and 1343 transitions. [2021-10-13 07:50:13,586 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 07:50:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1343 transitions. [2021-10-13 07:50:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:50:13,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:13,591 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 07:50:13,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:13,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:13,809 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:13,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:13,810 INFO L82 PathProgramCache]: Analyzing trace with hash 323652479, now seen corresponding path program 1 times [2021-10-13 07:50:13,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:13,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036996093] [2021-10-13 07:50:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:13,811 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:13,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:13,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:13,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:50:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:14,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:14,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:14,552 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 07:50:14,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:14,904 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 07:50:14,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:14,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036996093] [2021-10-13 07:50:14,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036996093] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:14,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:14,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:14,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788908346] [2021-10-13 07:50:14,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:14,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:14,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:14,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:14,907 INFO L87 Difference]: Start difference. First operand 992 states and 1343 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 07:50:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:14,969 INFO L93 Difference]: Finished difference Result 2000 states and 2704 transitions. [2021-10-13 07:50:14,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:14,970 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 07:50:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:14,979 INFO L225 Difference]: With dead ends: 2000 [2021-10-13 07:50:14,980 INFO L226 Difference]: Without dead ends: 1016 [2021-10-13 07:50:14,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 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 07:50:14,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-10-13 07:50:15,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2021-10-13 07:50:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 1.3517241379310345) internal successors, (1372), 1015 states have internal predecessors, (1372), 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 07:50:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1372 transitions. [2021-10-13 07:50:15,023 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1372 transitions. Word has length 122 [2021-10-13 07:50:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:15,023 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 1372 transitions. [2021-10-13 07:50:15,024 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 07:50:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1372 transitions. [2021-10-13 07:50:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:50:15,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:15,028 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 07:50:15,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:15,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:15,246 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:15,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1712946493, now seen corresponding path program 1 times [2021-10-13 07:50:15,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:15,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947181974] [2021-10-13 07:50:15,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:15,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:15,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:15,254 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:15,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:50:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:15,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:15,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:16,050 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 07:50:16,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:16,406 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 07:50:16,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:16,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947181974] [2021-10-13 07:50:16,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947181974] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:16,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:16,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:16,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59766756] [2021-10-13 07:50:16,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:16,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:16,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:16,409 INFO L87 Difference]: Start difference. First operand 1016 states and 1372 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 07:50:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:16,450 INFO L93 Difference]: Finished difference Result 2037 states and 2746 transitions. [2021-10-13 07:50:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:16,451 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 07:50:16,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:16,458 INFO L225 Difference]: With dead ends: 2037 [2021-10-13 07:50:16,459 INFO L226 Difference]: Without dead ends: 1029 [2021-10-13 07:50:16,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 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 07:50:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-10-13 07:50:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1029. [2021-10-13 07:50:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.3472762645914398) internal successors, (1385), 1028 states have internal predecessors, (1385), 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 07:50:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1385 transitions. [2021-10-13 07:50:16,498 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1385 transitions. Word has length 122 [2021-10-13 07:50:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:16,498 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 1385 transitions. [2021-10-13 07:50:16,499 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 07:50:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1385 transitions. [2021-10-13 07:50:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-10-13 07:50:16,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:16,503 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, 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] [2021-10-13 07:50:16,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:16,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:16,723 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1470040731, now seen corresponding path program 1 times [2021-10-13 07:50:16,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:16,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976746444] [2021-10-13 07:50:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:16,725 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:16,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:16,726 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:16,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:50:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:17,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:17,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:50:17,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:50:18,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:18,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976746444] [2021-10-13 07:50:18,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976746444] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:18,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:18,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:50:18,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414828002] [2021-10-13 07:50:18,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:50:18,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:18,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:50:18,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:18,106 INFO L87 Difference]: Start difference. First operand 1029 states and 1385 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 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 07:50:18,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:18,466 INFO L93 Difference]: Finished difference Result 2066 states and 2910 transitions. [2021-10-13 07:50:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:50:18,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 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) Word has length 162 [2021-10-13 07:50:18,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:18,474 INFO L225 Difference]: With dead ends: 2066 [2021-10-13 07:50:18,474 INFO L226 Difference]: Without dead ends: 1058 [2021-10-13 07:50:18,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:18,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-10-13 07:50:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1035. [2021-10-13 07:50:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 1.3762088974854931) internal successors, (1423), 1034 states have internal predecessors, (1423), 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 07:50:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1423 transitions. [2021-10-13 07:50:18,523 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1423 transitions. Word has length 162 [2021-10-13 07:50:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:18,524 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1423 transitions. [2021-10-13 07:50:18,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 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 07:50:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1423 transitions. [2021-10-13 07:50:18,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-10-13 07:50:18,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:18,529 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, 4, 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] [2021-10-13 07:50:18,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:18,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:18,749 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:18,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:18,750 INFO L82 PathProgramCache]: Analyzing trace with hash 732516287, now seen corresponding path program 1 times [2021-10-13 07:50:18,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:18,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785539561] [2021-10-13 07:50:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:18,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:18,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:18,751 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:18,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:50:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:19,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:19,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-10-13 07:50:19,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-10-13 07:50:20,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:20,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785539561] [2021-10-13 07:50:20,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785539561] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:20,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:20,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:20,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365003457] [2021-10-13 07:50:20,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:20,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:20,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:20,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:20,377 INFO L87 Difference]: Start difference. First operand 1035 states and 1423 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 07:50:20,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:20,582 INFO L93 Difference]: Finished difference Result 2142 states and 2995 transitions. [2021-10-13 07:50:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:20,582 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 205 [2021-10-13 07:50:20,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:20,591 INFO L225 Difference]: With dead ends: 2142 [2021-10-13 07:50:20,592 INFO L226 Difference]: Without dead ends: 1128 [2021-10-13 07:50:20,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:20,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-10-13 07:50:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1128. [2021-10-13 07:50:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1127 states have (on average 1.3584738243123335) internal successors, (1531), 1127 states have internal predecessors, (1531), 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 07:50:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1531 transitions. [2021-10-13 07:50:20,642 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1531 transitions. Word has length 205 [2021-10-13 07:50:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:20,643 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 1531 transitions. [2021-10-13 07:50:20,643 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 07:50:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1531 transitions. [2021-10-13 07:50:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-13 07:50:20,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:20,649 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, 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] [2021-10-13 07:50:20,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:20,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:20,862 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:20,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:20,862 INFO L82 PathProgramCache]: Analyzing trace with hash -344869126, now seen corresponding path program 1 times [2021-10-13 07:50:20,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:20,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349684177] [2021-10-13 07:50:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:20,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:20,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:20,865 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:20,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:50:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:21,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:50:21,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-13 07:50:22,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-13 07:50:22,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:22,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349684177] [2021-10-13 07:50:22,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349684177] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:22,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1890405101] [2021-10-13 07:50:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:22,828 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:50:22,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:50:22,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:50:22,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-13 07:50:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:23,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:50:23,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-13 07:50:24,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-13 07:50:25,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1890405101] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:25,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581685466] [2021-10-13 07:50:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:25,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:50:25,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:50:25,180 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:50:25,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 07:50:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:26,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:50:26,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-13 07:50:26,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-13 07:50:27,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581685466] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:27,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:50:27,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-13 07:50:27,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782471644] [2021-10-13 07:50:27,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:50:27,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:50:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:27,618 INFO L87 Difference]: Start difference. First operand 1128 states and 1531 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 07:50:28,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:28,109 INFO L93 Difference]: Finished difference Result 3582 states and 4987 transitions. [2021-10-13 07:50:28,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:50:28,110 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 232 [2021-10-13 07:50:28,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:28,130 INFO L225 Difference]: With dead ends: 3582 [2021-10-13 07:50:28,130 INFO L226 Difference]: Without dead ends: 2475 [2021-10-13 07:50:28,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1388 GetRequests, 1385 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:50:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2021-10-13 07:50:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2028. [2021-10-13 07:50:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 1.33744449925999) internal successors, (2711), 2027 states have internal predecessors, (2711), 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 07:50:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2711 transitions. [2021-10-13 07:50:28,219 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2711 transitions. Word has length 232 [2021-10-13 07:50:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:28,220 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 2711 transitions. [2021-10-13 07:50:28,220 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 07:50:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2711 transitions. [2021-10-13 07:50:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-13 07:50:28,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:28,227 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, 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] [2021-10-13 07:50:28,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:28,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-13 07:50:28,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-13 07:50:28,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:50:28,834 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:28,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:28,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1992232068, now seen corresponding path program 1 times [2021-10-13 07:50:28,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:28,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120215526] [2021-10-13 07:50:28,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:28,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:28,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:28,837 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:28,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:50:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:29,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:29,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-10-13 07:50:30,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-10-13 07:50:31,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:31,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120215526] [2021-10-13 07:50:31,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120215526] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:31,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:31,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:31,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399118050] [2021-10-13 07:50:31,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:31,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:31,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:31,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:31,318 INFO L87 Difference]: Start difference. First operand 2028 states and 2711 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 07:50:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:31,398 INFO L93 Difference]: Finished difference Result 5100 states and 6846 transitions. [2021-10-13 07:50:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:31,398 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 232 [2021-10-13 07:50:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:31,418 INFO L225 Difference]: With dead ends: 5100 [2021-10-13 07:50:31,418 INFO L226 Difference]: Without dead ends: 3093 [2021-10-13 07:50:31,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 461 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 07:50:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2021-10-13 07:50:31,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2926. [2021-10-13 07:50:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2925 states have (on average 1.3476923076923077) internal successors, (3942), 2925 states have internal predecessors, (3942), 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 07:50:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 3942 transitions. [2021-10-13 07:50:31,548 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 3942 transitions. Word has length 232 [2021-10-13 07:50:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:31,548 INFO L470 AbstractCegarLoop]: Abstraction has 2926 states and 3942 transitions. [2021-10-13 07:50:31,549 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 07:50:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 3942 transitions. [2021-10-13 07:50:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-10-13 07:50:31,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:31,558 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, 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] [2021-10-13 07:50:31,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:31,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:31,775 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:31,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:31,775 INFO L82 PathProgramCache]: Analyzing trace with hash -357223696, now seen corresponding path program 1 times [2021-10-13 07:50:31,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:31,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156435833] [2021-10-13 07:50:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:31,776 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:31,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:31,778 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:31,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:50:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:32,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:32,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-13 07:50:33,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-13 07:50:34,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:34,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156435833] [2021-10-13 07:50:34,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156435833] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:34,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:34,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:50:34,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886089819] [2021-10-13 07:50:34,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:50:34,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:50:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:34,265 INFO L87 Difference]: Start difference. First operand 2926 states and 3942 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:34,671 INFO L93 Difference]: Finished difference Result 5043 states and 6871 transitions. [2021-10-13 07:50:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:50:34,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2021-10-13 07:50:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:34,681 INFO L225 Difference]: With dead ends: 5043 [2021-10-13 07:50:34,682 INFO L226 Difference]: Without dead ends: 1386 [2021-10-13 07:50:34,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-10-13 07:50:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1327. [2021-10-13 07:50:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 1.3137254901960784) internal successors, (1742), 1326 states have internal predecessors, (1742), 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 07:50:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1742 transitions. [2021-10-13 07:50:34,743 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1742 transitions. Word has length 270 [2021-10-13 07:50:34,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:34,745 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1742 transitions. [2021-10-13 07:50:34,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:34,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1742 transitions. [2021-10-13 07:50:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-10-13 07:50:34,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:34,753 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-13 07:50:34,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:34,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:34,970 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:34,970 INFO L82 PathProgramCache]: Analyzing trace with hash -550695156, now seen corresponding path program 1 times [2021-10-13 07:50:34,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:34,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506712965] [2021-10-13 07:50:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:34,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:34,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:34,973 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:35,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:50:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:36,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:36,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-10-13 07:50:37,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-10-13 07:50:38,016 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:38,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506712965] [2021-10-13 07:50:38,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506712965] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:38,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:38,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:38,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141980206] [2021-10-13 07:50:38,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:38,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:38,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:38,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:38,019 INFO L87 Difference]: Start difference. First operand 1327 states and 1742 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:38,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:38,215 INFO L93 Difference]: Finished difference Result 2738 states and 3645 transitions. [2021-10-13 07:50:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:38,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 307 [2021-10-13 07:50:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:38,226 INFO L225 Difference]: With dead ends: 2738 [2021-10-13 07:50:38,226 INFO L226 Difference]: Without dead ends: 1432 [2021-10-13 07:50:38,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 611 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 07:50:38,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-10-13 07:50:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1408. [2021-10-13 07:50:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 1.3063255152807391) internal successors, (1838), 1407 states have internal predecessors, (1838), 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 07:50:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1838 transitions. [2021-10-13 07:50:38,292 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1838 transitions. Word has length 307 [2021-10-13 07:50:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:38,293 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 1838 transitions. [2021-10-13 07:50:38,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1838 transitions. [2021-10-13 07:50:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-10-13 07:50:38,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:38,302 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-13 07:50:38,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:38,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:38,521 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash -123892990, now seen corresponding path program 1 times [2021-10-13 07:50:38,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:38,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286014064] [2021-10-13 07:50:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:38,522 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:38,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:38,523 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:38,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:50:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:40,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:40,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-10-13 07:50:40,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-10-13 07:50:41,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:41,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286014064] [2021-10-13 07:50:41,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286014064] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:41,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:41,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:50:41,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338131451] [2021-10-13 07:50:41,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:41,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:41,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:41,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:41,785 INFO L87 Difference]: Start difference. First operand 1408 states and 1838 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 07:50:41,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:41,987 INFO L93 Difference]: Finished difference Result 2888 states and 3816 transitions. [2021-10-13 07:50:41,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:41,988 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 330 [2021-10-13 07:50:41,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:41,998 INFO L225 Difference]: With dead ends: 2888 [2021-10-13 07:50:41,999 INFO L226 Difference]: Without dead ends: 1501 [2021-10-13 07:50:42,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 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 07:50:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2021-10-13 07:50:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1495. [2021-10-13 07:50:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1494 states have (on average 1.2985274431057563) internal successors, (1940), 1494 states have internal predecessors, (1940), 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 07:50:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 1940 transitions. [2021-10-13 07:50:42,059 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 1940 transitions. Word has length 330 [2021-10-13 07:50:42,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:42,060 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 1940 transitions. [2021-10-13 07:50:42,061 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 07:50:42,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 1940 transitions. [2021-10-13 07:50:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-10-13 07:50:42,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:42,069 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-13 07:50:42,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:42,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:42,289 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:42,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:42,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1454996061, now seen corresponding path program 1 times [2021-10-13 07:50:42,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:42,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290057836] [2021-10-13 07:50:42,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:42,291 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:42,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:42,291 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:42,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:50:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:43,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:50:43,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-10-13 07:50:44,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-10-13 07:50:45,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:45,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290057836] [2021-10-13 07:50:45,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290057836] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:45,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:45,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-13 07:50:45,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777722119] [2021-10-13 07:50:45,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:50:45,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:45,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:50:45,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:50:45,833 INFO L87 Difference]: Start difference. First operand 1495 states and 1940 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 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 07:50:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:46,061 INFO L93 Difference]: Finished difference Result 7418 states and 9625 transitions. [2021-10-13 07:50:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:50:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 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 335 [2021-10-13 07:50:46,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:46,101 INFO L225 Difference]: With dead ends: 7418 [2021-10-13 07:50:46,101 INFO L226 Difference]: Without dead ends: 5944 [2021-10-13 07:50:46,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:50:46,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2021-10-13 07:50:46,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 2873. [2021-10-13 07:50:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2872 states have (on average 1.3036211699164346) internal successors, (3744), 2872 states have internal predecessors, (3744), 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 07:50:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3744 transitions. [2021-10-13 07:50:46,265 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3744 transitions. Word has length 335 [2021-10-13 07:50:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:46,265 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3744 transitions. [2021-10-13 07:50:46,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 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 07:50:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3744 transitions. [2021-10-13 07:50:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-10-13 07:50:46,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:46,276 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-13 07:50:46,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:46,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:46,486 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:46,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:46,486 INFO L82 PathProgramCache]: Analyzing trace with hash 249024121, now seen corresponding path program 1 times [2021-10-13 07:50:46,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:46,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004554540] [2021-10-13 07:50:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:46,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:46,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:46,489 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:46,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:50:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:48,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:50:48,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-13 07:50:49,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-13 07:50:50,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:50,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004554540] [2021-10-13 07:50:50,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004554540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:50,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1697496658] [2021-10-13 07:50:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:50,071 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:50:50,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:50:50,073 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:50:50,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-13 07:50:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:52,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:50:52,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-13 07:50:53,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-13 07:50:54,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1697496658] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:54,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266871341] [2021-10-13 07:50:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:54,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:50:54,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:50:54,520 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:50:54,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 07:50:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:57,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:50:57,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-13 07:50:57,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-13 07:50:58,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266871341] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:58,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:50:58,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-13 07:50:58,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710757886] [2021-10-13 07:50:58,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:50:58,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:58,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:50:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:58,657 INFO L87 Difference]: Start difference. First operand 2873 states and 3744 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 07:50:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:58,998 INFO L93 Difference]: Finished difference Result 8565 states and 11128 transitions. [2021-10-13 07:50:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:50:58,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 336 [2021-10-13 07:50:58,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:59,033 INFO L225 Difference]: With dead ends: 8565 [2021-10-13 07:50:59,034 INFO L226 Difference]: Without dead ends: 5713 [2021-10-13 07:50:59,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2012 GetRequests, 2009 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:50:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2021-10-13 07:50:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 3575. [2021-10-13 07:50:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3575 states, 3574 states have (on average 1.31952993844432) internal successors, (4716), 3574 states have internal predecessors, (4716), 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 07:50:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 4716 transitions. [2021-10-13 07:50:59,214 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 4716 transitions. Word has length 336 [2021-10-13 07:50:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:59,215 INFO L470 AbstractCegarLoop]: Abstraction has 3575 states and 4716 transitions. [2021-10-13 07:50:59,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 07:50:59,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 4716 transitions. [2021-10-13 07:50:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-10-13 07:50:59,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:59,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:59,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:59,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-13 07:50:59,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-13 07:50:59,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:59,832 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:59,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:59,833 INFO L82 PathProgramCache]: Analyzing trace with hash -430646114, now seen corresponding path program 1 times [2021-10-13 07:50:59,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:59,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559047914] [2021-10-13 07:50:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:59,834 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:59,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:59,836 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:59,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:51:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:02,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:51:02,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-13 07:51:03,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-13 07:51:03,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:03,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559047914] [2021-10-13 07:51:03,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559047914] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:03,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:03,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:51:03,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358800806] [2021-10-13 07:51:03,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:51:03,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:51:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:51:03,997 INFO L87 Difference]: Start difference. First operand 3575 states and 4716 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 07:51:04,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:04,230 INFO L93 Difference]: Finished difference Result 7389 states and 9849 transitions. [2021-10-13 07:51:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:51:04,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 403 [2021-10-13 07:51:04,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:04,249 INFO L225 Difference]: With dead ends: 7389 [2021-10-13 07:51:04,249 INFO L226 Difference]: Without dead ends: 3835 [2021-10-13 07:51:04,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 803 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 07:51:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2021-10-13 07:51:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3695. [2021-10-13 07:51:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3695 states, 3694 states have (on average 1.3172712506767732) internal successors, (4866), 3694 states have internal predecessors, (4866), 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 07:51:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 4866 transitions. [2021-10-13 07:51:04,445 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 4866 transitions. Word has length 403 [2021-10-13 07:51:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:04,446 INFO L470 AbstractCegarLoop]: Abstraction has 3695 states and 4866 transitions. [2021-10-13 07:51:04,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 07:51:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 4866 transitions. [2021-10-13 07:51:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-10-13 07:51:04,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:04,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:04,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:04,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:04,670 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:04,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:04,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1911041901, now seen corresponding path program 1 times [2021-10-13 07:51:04,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:04,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753689676] [2021-10-13 07:51:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:04,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:04,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:04,672 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:04,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:51:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:07,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:51:07,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-13 07:51:08,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-13 07:51:08,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:08,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753689676] [2021-10-13 07:51:08,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753689676] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:08,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:08,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:51:08,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087315213] [2021-10-13 07:51:08,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:51:08,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:08,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:51:08,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:51:08,988 INFO L87 Difference]: Start difference. First operand 3695 states and 4866 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 07:51:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:09,275 INFO L93 Difference]: Finished difference Result 7801 states and 10487 transitions. [2021-10-13 07:51:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:51:09,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 07:51:09,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:09,287 INFO L225 Difference]: With dead ends: 7801 [2021-10-13 07:51:09,288 INFO L226 Difference]: Without dead ends: 4127 [2021-10-13 07:51:09,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 805 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 07:51:09,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4127 states. [2021-10-13 07:51:09,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4127 to 4103. [2021-10-13 07:51:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 4102 states have (on average 1.3003412969283277) internal successors, (5334), 4102 states have internal predecessors, (5334), 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 07:51:09,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5334 transitions. [2021-10-13 07:51:09,447 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5334 transitions. Word has length 404 [2021-10-13 07:51:09,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:09,448 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 5334 transitions. [2021-10-13 07:51:09,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 07:51:09,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5334 transitions. [2021-10-13 07:51:09,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-10-13 07:51:09,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:09,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:09,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:09,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:09,671 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash -211737851, now seen corresponding path program 1 times [2021-10-13 07:51:09,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:09,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027780082] [2021-10-13 07:51:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:09,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:09,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:09,673 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:09,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 07:51:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:12,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:51:12,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-13 07:51:13,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-13 07:51:14,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:14,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027780082] [2021-10-13 07:51:14,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027780082] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:14,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:14,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:51:14,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494877443] [2021-10-13 07:51:14,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:51:14,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:14,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:51:14,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:51:14,394 INFO L87 Difference]: Start difference. First operand 4103 states and 5334 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 07:51:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:14,607 INFO L93 Difference]: Finished difference Result 7891 states and 10275 transitions. [2021-10-13 07:51:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:51:14,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 435 [2021-10-13 07:51:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:14,617 INFO L225 Difference]: With dead ends: 7891 [2021-10-13 07:51:14,617 INFO L226 Difference]: Without dead ends: 3809 [2021-10-13 07:51:14,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 867 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 07:51:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2021-10-13 07:51:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3501. [2021-10-13 07:51:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3500 states have (on average 1.245142857142857) internal successors, (4358), 3500 states have internal predecessors, (4358), 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 07:51:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4358 transitions. [2021-10-13 07:51:14,764 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4358 transitions. Word has length 435 [2021-10-13 07:51:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:14,765 INFO L470 AbstractCegarLoop]: Abstraction has 3501 states and 4358 transitions. [2021-10-13 07:51:14,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 07:51:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4358 transitions. [2021-10-13 07:51:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-10-13 07:51:14,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:14,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:14,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:14,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:14,990 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:14,990 INFO L82 PathProgramCache]: Analyzing trace with hash 89040274, now seen corresponding path program 1 times [2021-10-13 07:51:14,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:14,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064708955] [2021-10-13 07:51:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:14,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:14,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:14,994 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:15,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 07:51:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:17,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:51:17,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:51:18,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:51:19,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:19,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064708955] [2021-10-13 07:51:19,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064708955] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:19,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1599019511] [2021-10-13 07:51:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:19,894 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:51:19,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:51:19,895 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:51:19,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-10-13 07:51:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:24,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:51:24,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:25,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:51:25,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:51:26,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1599019511] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:26,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165070743] [2021-10-13 07:51:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:26,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:26,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:26,384 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:26,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 07:51:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:30,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:51:30,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:51:31,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-13 07:51:32,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165070743] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:32,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:51:32,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:51:32,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506378630] [2021-10-13 07:51:32,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:51:32,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:51:32,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:51:32,628 INFO L87 Difference]: Start difference. First operand 3501 states and 4358 transitions. Second operand has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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 07:51:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:33,137 INFO L93 Difference]: Finished difference Result 4833 states and 6002 transitions. [2021-10-13 07:51:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:51:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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 468 [2021-10-13 07:51:33,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:33,139 INFO L225 Difference]: With dead ends: 4833 [2021-10-13 07:51:33,140 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:51:33,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2808 GetRequests, 2801 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:51:33,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:51:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:51:33,146 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 07:51:33,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:51:33,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 468 [2021-10-13 07:51:33,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:33,147 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:51:33,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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 07:51:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:51:33,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:51:33,151 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:51:33,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:33,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:33,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:33,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:33,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:51:33,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:33,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:33,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:33,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:33,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:34,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:51:37,174 INFO L857 garLoopResultBuilder]: For program point L531(lines 531 537) no Hoare annotation was computed. [2021-10-13 07:51:37,175 INFO L857 garLoopResultBuilder]: For program point L531-1(lines 531 537) no Hoare annotation was computed. [2021-10-13 07:51:37,175 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 368) no Hoare annotation was computed. [2021-10-13 07:51:37,175 INFO L857 garLoopResultBuilder]: For program point L334-1(lines 334 368) no Hoare annotation was computed. [2021-10-13 07:51:37,175 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 547) no Hoare annotation was computed. [2021-10-13 07:51:37,175 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 558) no Hoare annotation was computed. [2021-10-13 07:51:37,176 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 569) no Hoare annotation was computed. [2021-10-13 07:51:37,176 INFO L857 garLoopResultBuilder]: For program point L103(lines 103 580) no Hoare annotation was computed. [2021-10-13 07:51:37,176 INFO L857 garLoopResultBuilder]: For program point L467(lines 467 469) no Hoare annotation was computed. [2021-10-13 07:51:37,176 INFO L857 garLoopResultBuilder]: For program point L401(lines 401 403) no Hoare annotation was computed. [2021-10-13 07:51:37,176 INFO L857 garLoopResultBuilder]: For program point L335(lines 335 365) no Hoare annotation was computed. [2021-10-13 07:51:37,177 INFO L853 garLoopResultBuilder]: At program point L203(lines 199 548) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) .cse1) (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))))) [2021-10-13 07:51:37,177 INFO L853 garLoopResultBuilder]: At program point L104(lines 103 580) the Hoare annotation is: false [2021-10-13 07:51:37,177 INFO L860 garLoopResultBuilder]: At program point L600(lines 99 601) the Hoare annotation is: true [2021-10-13 07:51:37,177 INFO L857 garLoopResultBuilder]: For program point L534(lines 534 536) no Hoare annotation was computed. [2021-10-13 07:51:37,177 INFO L857 garLoopResultBuilder]: For program point L205(lines 205 546) no Hoare annotation was computed. [2021-10-13 07:51:37,177 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 557) no Hoare annotation was computed. [2021-10-13 07:51:37,178 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 568) no Hoare annotation was computed. [2021-10-13 07:51:37,178 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 579) no Hoare annotation was computed. [2021-10-13 07:51:37,178 INFO L857 garLoopResultBuilder]: For program point L305(lines 305 312) no Hoare annotation was computed. [2021-10-13 07:51:37,178 INFO L857 garLoopResultBuilder]: For program point L305-2(lines 305 312) no Hoare annotation was computed. [2021-10-13 07:51:37,178 INFO L860 garLoopResultBuilder]: At program point L206(lines 205 546) the Hoare annotation is: true [2021-10-13 07:51:37,178 INFO L853 garLoopResultBuilder]: At program point L173(lines 169 558) the Hoare annotation is: (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:51:37,179 INFO L853 garLoopResultBuilder]: At program point L140(lines 136 569) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32)) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-13 07:51:37,179 INFO L857 garLoopResultBuilder]: For program point L340(lines 340 363) no Hoare annotation was computed. [2021-10-13 07:51:37,179 INFO L860 garLoopResultBuilder]: At program point L208(lines 207 546) the Hoare annotation is: true [2021-10-13 07:51:37,179 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 556) no Hoare annotation was computed. [2021-10-13 07:51:37,179 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 567) no Hoare annotation was computed. [2021-10-13 07:51:37,179 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 578) no Hoare annotation was computed. [2021-10-13 07:51:37,180 INFO L857 garLoopResultBuilder]: For program point L605(lines 605 607) no Hoare annotation was computed. [2021-10-13 07:51:37,180 INFO L857 garLoopResultBuilder]: For program point L605-2(lines 605 607) no Hoare annotation was computed. [2021-10-13 07:51:37,180 INFO L857 garLoopResultBuilder]: For program point L506(lines 506 509) no Hoare annotation was computed. [2021-10-13 07:51:37,180 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 277) no Hoare annotation was computed. [2021-10-13 07:51:37,180 INFO L857 garLoopResultBuilder]: For program point L275-2(lines 209 543) no Hoare annotation was computed. [2021-10-13 07:51:37,180 INFO L857 garLoopResultBuilder]: For program point L441(lines 441 443) no Hoare annotation was computed. [2021-10-13 07:51:37,181 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 311) no Hoare annotation was computed. [2021-10-13 07:51:37,181 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 347) no Hoare annotation was computed. [2021-10-13 07:51:37,181 INFO L857 garLoopResultBuilder]: For program point L343-2(lines 343 347) no Hoare annotation was computed. [2021-10-13 07:51:37,181 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 254) no Hoare annotation was computed. [2021-10-13 07:51:37,181 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 555) no Hoare annotation was computed. [2021-10-13 07:51:37,181 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 566) no Hoare annotation was computed. [2021-10-13 07:51:37,181 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 577) no Hoare annotation was computed. [2021-10-13 07:51:37,181 INFO L857 garLoopResultBuilder]: For program point L476(lines 476 478) no Hoare annotation was computed. [2021-10-13 07:51:37,181 INFO L857 garLoopResultBuilder]: For program point L377(lines 377 409) no Hoare annotation was computed. [2021-10-13 07:51:37,182 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 248) no Hoare annotation was computed. [2021-10-13 07:51:37,182 INFO L853 garLoopResultBuilder]: At program point L212(lines 106 579) the Hoare annotation is: false [2021-10-13 07:51:37,182 INFO L853 garLoopResultBuilder]: At program point L179(lines 175 556) the Hoare annotation is: (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:51:37,182 INFO L853 garLoopResultBuilder]: At program point L146(lines 142 567) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:51:37,182 INFO L857 garLoopResultBuilder]: For program point L444(lines 444 453) no Hoare annotation was computed. [2021-10-13 07:51:37,183 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 384) no Hoare annotation was computed. [2021-10-13 07:51:37,183 INFO L860 garLoopResultBuilder]: At program point L610(lines 12 612) the Hoare annotation is: true [2021-10-13 07:51:37,183 INFO L853 garLoopResultBuilder]: At program point L544(lines 100 599) the Hoare annotation is: (let ((.cse10 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32)))) (.cse4 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse12 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse9 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse8 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse5 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse6 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse7) (and .cse6 .cse7 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse9 .cse6 .cse7 .cse8) (and .cse6 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse10 .cse3 .cse8) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse11 .cse6 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse6 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse11 .cse6 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse12 .cse6 .cse7 .cse8) (and .cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse8) (and .cse10 .cse6 .cse7 .cse8) (and .cse4 .cse0 .cse3) (and .cse0 .cse12 .cse2 .cse3) (and .cse11 .cse6 .cse1 .cse8) (and .cse9 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse8) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse5 .cse6 .cse1))) [2021-10-13 07:51:37,183 INFO L857 garLoopResultBuilder]: For program point L181(lines 181 554) no Hoare annotation was computed. [2021-10-13 07:51:37,184 INFO L857 garLoopResultBuilder]: For program point L148(lines 148 565) no Hoare annotation was computed. [2021-10-13 07:51:37,184 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 576) no Hoare annotation was computed. [2021-10-13 07:51:37,184 INFO L857 garLoopResultBuilder]: For program point L479(lines 479 483) no Hoare annotation was computed. [2021-10-13 07:51:37,184 INFO L857 garLoopResultBuilder]: For program point L479-2(lines 479 483) no Hoare annotation was computed. [2021-10-13 07:51:37,184 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 89) no Hoare annotation was computed. [2021-10-13 07:51:37,184 INFO L857 garLoopResultBuilder]: For program point L514(lines 514 516) no Hoare annotation was computed. [2021-10-13 07:51:37,184 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2021-10-13 07:51:37,184 INFO L857 garLoopResultBuilder]: For program point L217(lines 217 219) no Hoare annotation was computed. [2021-10-13 07:51:37,185 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 553) no Hoare annotation was computed. [2021-10-13 07:51:37,185 INFO L857 garLoopResultBuilder]: For program point L151(lines 151 564) no Hoare annotation was computed. [2021-10-13 07:51:37,185 INFO L857 garLoopResultBuilder]: For program point L217-2(lines 217 219) no Hoare annotation was computed. [2021-10-13 07:51:37,185 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 575) no Hoare annotation was computed. [2021-10-13 07:51:37,185 INFO L857 garLoopResultBuilder]: For program point L581(lines 581 597) no Hoare annotation was computed. [2021-10-13 07:51:37,185 INFO L853 garLoopResultBuilder]: At program point L515(lines 73 611) the Hoare annotation is: false [2021-10-13 07:51:37,185 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:51:37,186 INFO L853 garLoopResultBuilder]: At program point L185(lines 181 554) the Hoare annotation is: (and (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:51:37,186 INFO L853 garLoopResultBuilder]: At program point L152(lines 148 565) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:51:37,186 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 88) no Hoare annotation was computed. [2021-10-13 07:51:37,186 INFO L857 garLoopResultBuilder]: For program point L86-2(lines 83 89) no Hoare annotation was computed. [2021-10-13 07:51:37,186 INFO L857 garLoopResultBuilder]: For program point L582(lines 582 596) no Hoare annotation was computed. [2021-10-13 07:51:37,186 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 359) no Hoare annotation was computed. [2021-10-13 07:51:37,187 INFO L857 garLoopResultBuilder]: For program point L583(lines 583 588) no Hoare annotation was computed. [2021-10-13 07:51:37,187 INFO L857 garLoopResultBuilder]: For program point L517(lines 517 519) no Hoare annotation was computed. [2021-10-13 07:51:37,187 INFO L857 garLoopResultBuilder]: For program point L583-2(lines 582 596) no Hoare annotation was computed. [2021-10-13 07:51:37,187 INFO L853 garLoopResultBuilder]: At program point L352(lines 328 370) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:51:37,187 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 552) no Hoare annotation was computed. [2021-10-13 07:51:37,187 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 563) no Hoare annotation was computed. [2021-10-13 07:51:37,187 INFO L857 garLoopResultBuilder]: For program point L121(lines 121 574) no Hoare annotation was computed. [2021-10-13 07:51:37,188 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 421) no Hoare annotation was computed. [2021-10-13 07:51:37,188 INFO L853 garLoopResultBuilder]: At program point L386(lines 377 409) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:51:37,188 INFO L853 garLoopResultBuilder]: At program point L122(lines 118 575) the Hoare annotation is: false [2021-10-13 07:51:37,188 INFO L857 garLoopResultBuilder]: For program point L585(lines 585 587) no Hoare annotation was computed. [2021-10-13 07:51:37,188 INFO L857 garLoopResultBuilder]: For program point L354(lines 354 356) no Hoare annotation was computed. [2021-10-13 07:51:37,188 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 290) no Hoare annotation was computed. [2021-10-13 07:51:37,189 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 224) no Hoare annotation was computed. [2021-10-13 07:51:37,189 INFO L857 garLoopResultBuilder]: For program point L288-2(lines 209 543) no Hoare annotation was computed. [2021-10-13 07:51:37,189 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 326) no Hoare annotation was computed. [2021-10-13 07:51:37,189 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:51:37,189 INFO L857 garLoopResultBuilder]: For program point L322-2(lines 209 543) no Hoare annotation was computed. [2021-10-13 07:51:37,189 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 551) no Hoare annotation was computed. [2021-10-13 07:51:37,190 INFO L857 garLoopResultBuilder]: For program point L157(lines 157 562) no Hoare annotation was computed. [2021-10-13 07:51:37,190 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 573) no Hoare annotation was computed. [2021-10-13 07:51:37,190 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-10-13 07:51:37,190 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 73 611) no Hoare annotation was computed. [2021-10-13 07:51:37,190 INFO L857 garLoopResultBuilder]: For program point L521(lines 521 525) no Hoare annotation was computed. [2021-10-13 07:51:37,190 INFO L857 garLoopResultBuilder]: For program point L521-2(lines 521 525) no Hoare annotation was computed. [2021-10-13 07:51:37,191 INFO L857 garLoopResultBuilder]: For program point L389(lines 389 407) no Hoare annotation was computed. [2021-10-13 07:51:37,191 INFO L853 garLoopResultBuilder]: At program point L191(lines 187 552) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-13 07:51:37,191 INFO L853 garLoopResultBuilder]: At program point L158(lines 154 563) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:51:37,191 INFO L853 garLoopResultBuilder]: At program point L125(lines 124 573) the Hoare annotation is: (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-13 07:51:37,191 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 94) no Hoare annotation was computed. [2021-10-13 07:51:37,191 INFO L857 garLoopResultBuilder]: For program point L489(lines 489 492) no Hoare annotation was computed. [2021-10-13 07:51:37,191 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 396) no Hoare annotation was computed. [2021-10-13 07:51:37,191 INFO L860 garLoopResultBuilder]: At program point L622(lines 613 624) the Hoare annotation is: true [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L193(lines 193 550) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L160(lines 160 561) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L127(lines 127 572) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L590(lines 590 594) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L458(lines 458 460) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 262) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 238) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 209 543) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 298) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L294-2(lines 294 298) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L427-1(lines 427 435) no Hoare annotation was computed. [2021-10-13 07:51:37,192 INFO L857 garLoopResultBuilder]: For program point L229(lines 229 232) no Hoare annotation was computed. [2021-10-13 07:51:37,193 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 549) no Hoare annotation was computed. [2021-10-13 07:51:37,193 INFO L857 garLoopResultBuilder]: For program point L163(lines 163 560) no Hoare annotation was computed. [2021-10-13 07:51:37,193 INFO L857 garLoopResultBuilder]: For program point L130(lines 130 571) no Hoare annotation was computed. [2021-10-13 07:51:37,193 INFO L857 garLoopResultBuilder]: For program point L494(lines 494 500) no Hoare annotation was computed. [2021-10-13 07:51:37,193 INFO L853 garLoopResultBuilder]: At program point L197(lines 193 550) the Hoare annotation is: (let ((.cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) .cse0) (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse0))) [2021-10-13 07:51:37,193 INFO L853 garLoopResultBuilder]: At program point L164(lines 160 561) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:51:37,193 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:51:37,193 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 609) no Hoare annotation was computed. [2021-10-13 07:51:37,193 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 433) no Hoare annotation was computed. [2021-10-13 07:51:37,193 INFO L857 garLoopResultBuilder]: For program point L331(lines 331 369) no Hoare annotation was computed. [2021-10-13 07:51:37,193 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 548) no Hoare annotation was computed. [2021-10-13 07:51:37,193 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 559) no Hoare annotation was computed. [2021-10-13 07:51:37,194 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 570) no Hoare annotation was computed. [2021-10-13 07:51:37,194 INFO L853 garLoopResultBuilder]: At program point L100-2(lines 100 599) the Hoare annotation is: (let ((.cse10 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32)))) (.cse4 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse12 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse9 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse8 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse5 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse6 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse7) (and .cse6 .cse7 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse9 .cse6 .cse7 .cse8) (and .cse6 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse10 .cse3 .cse8) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse11 .cse6 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse6 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse11 .cse6 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse12 .cse6 .cse7 .cse8) (and .cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse8) (and .cse10 .cse6 .cse7 .cse8) (and .cse4 .cse0 .cse3) (and .cse0 .cse12 .cse2 .cse3) (and .cse11 .cse6 .cse1 .cse8) (and .cse9 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))) (and .cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse8) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse5 .cse6 .cse1))) [2021-10-13 07:51:37,194 INFO L857 garLoopResultBuilder]: For program point L497(lines 497 499) no Hoare annotation was computed. [2021-10-13 07:51:37,194 INFO L857 garLoopResultBuilder]: For program point L497-2(lines 209 543) no Hoare annotation was computed. [2021-10-13 07:51:37,194 INFO L853 garLoopResultBuilder]: At program point L398(lines 389 407) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-13 07:51:37,194 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 236) no Hoare annotation was computed. [2021-10-13 07:51:37,194 INFO L853 garLoopResultBuilder]: At program point L167(lines 166 559) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse0 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse1 .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1 .cse0))) [2021-10-13 07:51:37,195 INFO L853 garLoopResultBuilder]: At program point L134(lines 127 572) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-13 07:51:37,195 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 07:51:37,200 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:51:37,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:51:37 BoogieIcfgContainer [2021-10-13 07:51:37,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:51:37,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:51:37,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:51:37,274 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:51:37,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:04" (3/4) ... [2021-10-13 07:51:37,278 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:51:37,298 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:51:37,299 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:51:37,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:51:37,301 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:51:37,437 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:51:37,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:51:37,440 INFO L168 Benchmark]: Toolchain (without parser) took 94435.62 ms. Allocated memory was 83.9 MB in the beginning and 559.9 MB in the end (delta: 476.1 MB). Free memory was 49.1 MB in the beginning and 150.6 MB in the end (delta: -101.5 MB). Peak memory consumption was 378.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:37,440 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 65.9 MB in the beginning and 65.8 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:37,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 512.62 ms. Allocated memory is still 83.9 MB. Free memory was 48.9 MB in the beginning and 62.9 MB in the end (delta: -14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:37,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.93 ms. Allocated memory is still 83.9 MB. Free memory was 62.9 MB in the beginning and 60.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:37,442 INFO L168 Benchmark]: Boogie Preprocessor took 81.46 ms. Allocated memory is still 83.9 MB. Free memory was 60.2 MB in the beginning and 57.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:37,442 INFO L168 Benchmark]: RCFGBuilder took 942.88 ms. Allocated memory is still 83.9 MB. Free memory was 57.9 MB in the beginning and 62.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:37,443 INFO L168 Benchmark]: TraceAbstraction took 92645.30 ms. Allocated memory was 83.9 MB in the beginning and 559.9 MB in the end (delta: 476.1 MB). Free memory was 61.8 MB in the beginning and 161.1 MB in the end (delta: -99.3 MB). Peak memory consumption was 410.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:37,443 INFO L168 Benchmark]: Witness Printer took 164.12 ms. Allocated memory is still 559.9 MB. Free memory was 161.1 MB in the beginning and 150.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:37,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 65.9 MB in the beginning and 65.8 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 512.62 ms. Allocated memory is still 83.9 MB. Free memory was 48.9 MB in the beginning and 62.9 MB in the end (delta: -14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.93 ms. Allocated memory is still 83.9 MB. Free memory was 62.9 MB in the beginning and 60.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.46 ms. Allocated memory is still 83.9 MB. Free memory was 60.2 MB in the beginning and 57.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 942.88 ms. Allocated memory is still 83.9 MB. Free memory was 57.9 MB in the beginning and 62.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 92645.30 ms. Allocated memory was 83.9 MB in the beginning and 559.9 MB in the end (delta: 476.1 MB). Free memory was 61.8 MB in the beginning and 161.1 MB in the end (delta: -99.3 MB). Peak memory consumption was 410.0 MB. Max. memory is 16.1 GB. * Witness Printer took 164.12 ms. Allocated memory is still 559.9 MB. Free memory was 161.1 MB in the beginning and 150.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 8.4 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: 609]: 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, 141 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 92492.3ms, OverallIterations: 22, TraceHistogramMax: 15, EmptinessCheckTime: 161.5ms, AutomataDifference: 5432.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3409.5ms, InitialAbstractionConstructionTime: 29.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5022 SDtfs, 2802 SDslu, 4349 SDs, 0 SdLazy, 2631 SolverSat, 529 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2871.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14052 GetRequests, 14011 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 204.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4103occurred in iteration=20, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1550.2ms AutomataMinimizationTime, 22 MinimizatonAttempts, 6436 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 210 NumberOfFragments, 870 HoareAnnotationTreeSize, 28 FomulaSimplifications, 14614 FormulaSimplificationTreeSizeReduction, 1089.8ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 2763 FormulaSimplificationTreeSizeReductionInter, 2304.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 556.9ms SsaConstructionTime, 2361.0ms SatisfiabilityAnalysisTime, 35797.9ms InterpolantComputationTime, 7046 NumberOfCodeBlocks, 7046 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 14036 ConstructedInterpolants, 0 QuantifiedInterpolants, 19333 SizeOfPredicates, 14 NumberOfNonLiveVariables, 8444 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 56 InterpolantComputations, 38 PerfectInterpolantSequences, 44554/45022 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: 99]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 328]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 106]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: (((((((((((((((((((((!(4bv32 == blastFlag) && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || (((8672bv32 == s__state && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32))) || (((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && !(s__s3__tmp__next_state___0 == 8656bv32)) && 8466bv32 == s__state) && 2bv32 == blastFlag)) || (((8496bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8560bv32 == s__state) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8544bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8640bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (((8656bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || ((8672bv32 == s__state && !(4bv32 == blastFlag)) && !(s__hit == 0bv32))) || (((!(4bv32 == blastFlag) && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) && 2bv32 == blastFlag)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (!(4bv32 == blastFlag) && 3bv32 == s__state)) || ((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag) || ((!(8657bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) - InvariantResult [Line: 377]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 187]: Loop Invariant Derived loop invariant: ((((!(4bv32 == blastFlag) && !(8657bv32 == s__state)) && !(8656bv32 == s__state)) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || ((((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && !(8656bv32 == s__state)) && 2bv32 == blastFlag) - InvariantResult [Line: 389]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 124]: Loop Invariant Derived loop invariant: (!(4bv32 == blastFlag) && !(8657bv32 == s__state)) && !(8656bv32 == s__state) - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && blastFlag == 0bv32) && !(8656bv32 == s__state)) || ((((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && !(8656bv32 == s__state)) && 2bv32 == blastFlag) - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: (!(8657bv32 == s__state) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 166]: Loop Invariant Derived loop invariant: ((((!(4bv32 == blastFlag) && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) && 2bv32 == blastFlag)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && blastFlag == 1bv32) && !(8656bv32 == s__state)) || ((((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && !(8656bv32 == s__state)) && 2bv32 == blastFlag) - InvariantResult [Line: 169]: Loop Invariant Derived loop invariant: (((8576bv32 == s__s3__tmp__next_state___0 && !(8657bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: (((8576bv32 == s__s3__tmp__next_state___0 && !(8657bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8657bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && !(8656bv32 == s__state)) || (((!(4bv32 == blastFlag) && !(8657bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) - InvariantResult [Line: 181]: Loop Invariant Derived loop invariant: ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && !(s__s3__tmp__next_state___0 == 8656bv32)) && 8608bv32 == s__state) && 2bv32 == blastFlag - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((!(4bv32 == blastFlag) && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || (((8672bv32 == s__state && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32))) || (((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && !(s__s3__tmp__next_state___0 == 8656bv32)) && 8466bv32 == s__state) && 2bv32 == blastFlag)) || (((8496bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8560bv32 == s__state) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8544bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8640bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (((8656bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || ((8672bv32 == s__state && !(4bv32 == blastFlag)) && !(s__hit == 0bv32))) || (((!(4bv32 == blastFlag) && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) && 2bv32 == blastFlag)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (8464bv32 == s__state && blastFlag == 0bv32)) || (!(4bv32 == blastFlag) && 3bv32 == s__state)) || ((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:51:37,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_699e6cce-3f28-42f5-8c52-83da12133398/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...