./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE --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 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 ........................................................................................................................................................................................................................................................................................................................... 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_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE --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 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:41:52,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:41:52,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:41:52,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:41:52,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:41:52,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:41:52,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:41:52,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:41:52,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:41:52,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:41:52,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:41:52,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:41:52,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:41:52,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:41:52,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:41:52,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:41:52,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:41:52,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:41:52,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:41:52,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:41:52,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:41:52,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:41:52,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:41:52,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:41:52,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:41:52,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:41:52,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:41:52,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:41:52,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:41:52,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:41:52,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:41:52,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:41:52,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:41:52,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:41:52,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:41:52,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:41:52,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:41:52,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:41:52,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:41:52,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:41:52,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:41:52,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:41:52,310 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:41:52,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:41:52,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:41:52,312 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:41:52,313 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:41:52,313 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:41:52,314 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:41:52,314 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:41:52,315 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:41:52,315 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:41:52,316 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:41:52,316 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:41:52,317 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:41:52,317 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:41:52,318 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:41:52,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:41:52,319 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:41:52,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:41:52,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:41:52,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:41:52,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:41:52,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:41:52,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:41:52,323 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:41:52,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:41:52,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:41:52,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:41:52,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:41:52,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:41:52,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:41:52,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:41:52,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:41:52,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:41:52,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:41:52,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:41:52,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:41:52,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:41:52,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:41:52,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:41:52,330 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_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2021-10-24 10:41:52,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:41:52,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:41:52,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:41:52,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:41:52,684 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:41:52,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-24 10:41:52,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/data/c3bffa933/b52cd431e5bc412cba13aeaffcace932/FLAGae874d536 [2021-10-24 10:41:53,314 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:41:53,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-24 10:41:53,331 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/data/c3bffa933/b52cd431e5bc412cba13aeaffcace932/FLAGae874d536 [2021-10-24 10:41:53,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/data/c3bffa933/b52cd431e5bc412cba13aeaffcace932 [2021-10-24 10:41:53,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:41:53,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:41:53,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:41:53,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:41:53,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:41:53,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:53" (1/1) ... [2021-10-24 10:41:53,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d537ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:53, skipping insertion in model container [2021-10-24 10:41:53,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:53" (1/1) ... [2021-10-24 10:41:53,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:41:53,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:41:53,963 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_8117a05e-a6a9-4ff5-8385-f8f726993754/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-24 10:41:53,968 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_8117a05e-a6a9-4ff5-8385-f8f726993754/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-24 10:41:53,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:41:53,981 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:41:54,013 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_8117a05e-a6a9-4ff5-8385-f8f726993754/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-24 10:41:54,015 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_8117a05e-a6a9-4ff5-8385-f8f726993754/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-24 10:41:54,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:41:54,035 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:41:54,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54 WrapperNode [2021-10-24 10:41:54,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:41:54,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:41:54,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:41:54,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:41:54,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (1/1) ... [2021-10-24 10:41:54,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (1/1) ... [2021-10-24 10:41:54,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:41:54,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:41:54,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:41:54,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:41:54,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (1/1) ... [2021-10-24 10:41:54,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (1/1) ... [2021-10-24 10:41:54,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (1/1) ... [2021-10-24 10:41:54,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (1/1) ... [2021-10-24 10:41:54,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (1/1) ... [2021-10-24 10:41:54,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (1/1) ... [2021-10-24 10:41:54,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (1/1) ... [2021-10-24 10:41:54,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:41:54,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:41:54,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:41:54,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:41:54,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (1/1) ... [2021-10-24 10:41:54,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:41:54,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:41:54,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:41:54,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:41:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:41:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:41:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-24 10:41:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:41:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:41:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:41:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:41:55,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:41:55,387 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-24 10:41:55,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:55 BoogieIcfgContainer [2021-10-24 10:41:55,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:41:55,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:41:55,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:41:55,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:41:55,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:41:53" (1/3) ... [2021-10-24 10:41:55,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bec393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:55, skipping insertion in model container [2021-10-24 10:41:55,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:54" (2/3) ... [2021-10-24 10:41:55,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bec393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:55, skipping insertion in model container [2021-10-24 10:41:55,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:55" (3/3) ... [2021-10-24 10:41:55,410 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-10-24 10:41:55,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:41:55,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 10:41:55,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:41:55,495 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-10-24 10:41:55,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 10:41:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:41:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:41:55,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:41:55,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:41:55,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:41:55,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:41:55,527 INFO L82 PathProgramCache]: Analyzing trace with hash -472833128, now seen corresponding path program 1 times [2021-10-24 10:41:55,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:41:55,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790781800] [2021-10-24 10:41:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:41:55,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:41:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:41:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:41:55,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:41:55,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790781800] [2021-10-24 10:41:55,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790781800] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:41:55,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:41:55,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:41:55,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202590455] [2021-10-24 10:41:55,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:41:55,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:41:55,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:41:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:41:55,849 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:41:55,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:41:55,869 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2021-10-24 10:41:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:41:55,871 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-24 10:41:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:41:55,882 INFO L225 Difference]: With dead ends: 36 [2021-10-24 10:41:55,883 INFO L226 Difference]: Without dead ends: 16 [2021-10-24 10:41:55,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:41:55,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-24 10:41:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-24 10:41:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:41:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-24 10:41:55,925 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2021-10-24 10:41:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:41:55,925 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-24 10:41:55,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:41:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-24 10:41:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:41:55,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:41:55,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:41:55,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:41:55,928 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:41:55,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:41:55,933 INFO L82 PathProgramCache]: Analyzing trace with hash 602078252, now seen corresponding path program 1 times [2021-10-24 10:41:55,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:41:55,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909345583] [2021-10-24 10:41:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:41:55,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:41:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:41:56,041 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:41:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:41:56,194 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:41:56,194 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:41:56,197 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:41:56,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:41:56,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:41:56,207 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:41:56,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:41:56 BoogieIcfgContainer [2021-10-24 10:41:56,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:41:56,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:41:56,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:41:56,244 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:41:56,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:55" (3/4) ... [2021-10-24 10:41:56,249 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:41:56,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:41:56,252 INFO L168 Benchmark]: Toolchain (without parser) took 2570.31 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 57.2 MB in the beginning and 72.1 MB in the end (delta: -14.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:41:56,253 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 73.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:41:56,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.99 ms. Allocated memory is still 96.5 MB. Free memory was 57.0 MB in the beginning and 70.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:41:56,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.78 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 68.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:41:56,255 INFO L168 Benchmark]: Boogie Preprocessor took 48.83 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 66.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:41:56,257 INFO L168 Benchmark]: RCFGBuilder took 1245.59 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 66.9 MB in the beginning and 103.6 MB in the end (delta: -36.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:41:56,257 INFO L168 Benchmark]: TraceAbstraction took 844.78 ms. Allocated memory is still 130.0 MB. Free memory was 103.6 MB in the beginning and 72.1 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:41:56,258 INFO L168 Benchmark]: Witness Printer took 7.36 ms. Allocated memory is still 130.0 MB. Free memory is still 72.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:41:56,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 73.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.99 ms. Allocated memory is still 96.5 MB. Free memory was 57.0 MB in the beginning and 70.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.78 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 68.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.83 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 66.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1245.59 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 66.9 MB in the beginning and 103.6 MB in the end (delta: -36.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 844.78 ms. Allocated memory is still 130.0 MB. Free memory was 103.6 MB in the beginning and 72.1 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Witness Printer took 7.36 ms. Allocated memory is still 130.0 MB. Free memory is still 72.1 MB. There was no memory consumed. 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 - UnprovableResult [Line: 77]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L73] float res = fmin_float(x, y); [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() - UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 720.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 14.8ms, AutomataDifference: 63.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.2ms SsaConstructionTime, 183.3ms SatisfiabilityAnalysisTime, 99.5ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:41:56,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/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-e943c26 [2021-10-24 10:41:59,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:41:59,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:41:59,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:41:59,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:41:59,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:41:59,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:41:59,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:41:59,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:41:59,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:41:59,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:41:59,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:41:59,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:41:59,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:41:59,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:41:59,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:41:59,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:41:59,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:41:59,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:41:59,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:41:59,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:41:59,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:41:59,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:41:59,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:41:59,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:41:59,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:41:59,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:41:59,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:41:59,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:41:59,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:41:59,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:41:59,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:41:59,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:41:59,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:41:59,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:41:59,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:41:59,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:41:59,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:41:59,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:41:59,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:41:59,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:41:59,540 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:41:59,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:41:59,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:41:59,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:41:59,582 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:41:59,582 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:41:59,582 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:41:59,583 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:41:59,583 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:41:59,583 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:41:59,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:41:59,586 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:41:59,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:41:59,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:41:59,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:41:59,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:41:59,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:41:59,588 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:41:59,589 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:41:59,589 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:41:59,589 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:41:59,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:41:59,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:41:59,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:41:59,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:41:59,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:41:59,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:41:59,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:41:59,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:41:59,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:41:59,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:41:59,592 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:41:59,593 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:41:59,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:41:59,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:41:59,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:41:59,594 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_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2021-10-24 10:42:00,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:42:00,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:42:00,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:42:00,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:42:00,118 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:42:00,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-24 10:42:00,205 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/data/2335f850d/e16ffe8a4e9b40c69331286006e88d11/FLAGcc06462cd [2021-10-24 10:42:00,892 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:42:00,893 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-24 10:42:00,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/data/2335f850d/e16ffe8a4e9b40c69331286006e88d11/FLAGcc06462cd [2021-10-24 10:42:01,261 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/data/2335f850d/e16ffe8a4e9b40c69331286006e88d11 [2021-10-24 10:42:01,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:42:01,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:42:01,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:42:01,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:42:01,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:42:01,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b9cbe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01, skipping insertion in model container [2021-10-24 10:42:01,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:42:01,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:42:01,530 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_8117a05e-a6a9-4ff5-8385-f8f726993754/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-24 10:42:01,542 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_8117a05e-a6a9-4ff5-8385-f8f726993754/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-24 10:42:01,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:42:01,576 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:42:01,635 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_8117a05e-a6a9-4ff5-8385-f8f726993754/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-24 10:42:01,640 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_8117a05e-a6a9-4ff5-8385-f8f726993754/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-24 10:42:01,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:42:01,736 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:42:01,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01 WrapperNode [2021-10-24 10:42:01,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:42:01,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:42:01,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:42:01,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:42:01,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:42:01,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:42:01,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:42:01,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:42:01,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:42:01,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:42:01,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:42:01,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:42:01,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (1/1) ... [2021-10-24 10:42:01,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:42:01,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:42:01,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:42:01,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:42:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:42:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:42:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 10:42:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:42:02,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:42:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-24 10:42:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:42:02,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:42:02,688 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-24 10:42:02,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:42:02 BoogieIcfgContainer [2021-10-24 10:42:02,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:42:02,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:42:02,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:42:02,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:42:02,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:42:01" (1/3) ... [2021-10-24 10:42:02,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad1dfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:42:02, skipping insertion in model container [2021-10-24 10:42:02,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01" (2/3) ... [2021-10-24 10:42:02,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad1dfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:42:02, skipping insertion in model container [2021-10-24 10:42:02,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:42:02" (3/3) ... [2021-10-24 10:42:02,709 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-10-24 10:42:02,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:42:02,716 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 10:42:02,776 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:42:02,784 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-10-24 10:42:02,785 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 10:42:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:42:02,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:02,814 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:42:02,815 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:02,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-10-24 10:42:02,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:02,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556487123] [2021-10-24 10:42:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:02,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:02,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:02,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:02,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:42:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:02,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:42:02,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:03,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:03,120 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:03,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556487123] [2021-10-24 10:42:03,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556487123] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:03,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:03,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:42:03,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672810670] [2021-10-24 10:42:03,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:42:03,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:03,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:42:03,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:42:03,147 INFO L87 Difference]: Start difference. First operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 0 states have call successors, (0), 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 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:03,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:03,169 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2021-10-24 10:42:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:42:03,171 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-10-24 10:42:03,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:03,181 INFO L225 Difference]: With dead ends: 82 [2021-10-24 10:42:03,182 INFO L226 Difference]: Without dead ends: 43 [2021-10-24 10:42:03,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:42:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-24 10:42:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-24 10:42:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2021-10-24 10:42:03,224 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2021-10-24 10:42:03,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:03,225 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2021-10-24 10:42:03,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:03,225 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2021-10-24 10:42:03,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 10:42:03,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:03,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:42:03,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:03,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:03,443 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:03,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2021-10-24 10:42:03,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:03,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906974469] [2021-10-24 10:42:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:03,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:03,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:03,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:03,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:42:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:03,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:42:03,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:03,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:03,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:03,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906974469] [2021-10-24 10:42:03,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906974469] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:03,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:03,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:42:03,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094193207] [2021-10-24 10:42:03,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:42:03,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:03,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:42:03,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:42:03,790 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:03,888 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2021-10-24 10:42:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:42:03,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-24 10:42:03,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:03,892 INFO L225 Difference]: With dead ends: 82 [2021-10-24 10:42:03,892 INFO L226 Difference]: Without dead ends: 50 [2021-10-24 10:42:03,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:42:03,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-24 10:42:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-24 10:42:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 44 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) [2021-10-24 10:42:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-10-24 10:42:03,922 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2021-10-24 10:42:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:03,923 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-10-24 10:42:03,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-10-24 10:42:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 10:42:03,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:03,932 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:42:03,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:04,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:04,149 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:04,150 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-10-24 10:42:04,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:04,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378524054] [2021-10-24 10:42:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:04,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:04,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:04,153 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:04,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:42:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:04,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:42:04,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:04,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:04,442 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:04,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378524054] [2021-10-24 10:42:04,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378524054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:04,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:04,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:42:04,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050634681] [2021-10-24 10:42:04,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:42:04,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:42:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:42:04,445 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:04,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:04,567 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2021-10-24 10:42:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:42:04,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 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 18 [2021-10-24 10:42:04,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:04,573 INFO L225 Difference]: With dead ends: 96 [2021-10-24 10:42:04,573 INFO L226 Difference]: Without dead ends: 83 [2021-10-24 10:42:04,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:42:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-24 10:42:04,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2021-10-24 10:42:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-24 10:42:04,597 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-10-24 10:42:04,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:04,597 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-24 10:42:04,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:04,598 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-24 10:42:04,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:42:04,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:04,599 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] [2021-10-24 10:42:04,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:04,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:04,801 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:04,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:04,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-10-24 10:42:04,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:04,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107535522] [2021-10-24 10:42:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:04,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:04,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:04,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:04,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:42:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:05,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 10:42:05,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:05,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:05,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:05,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107535522] [2021-10-24 10:42:05,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107535522] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:05,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:05,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-24 10:42:05,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318962989] [2021-10-24 10:42:05,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 10:42:05,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 10:42:05,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:42:05,660 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:06,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:06,192 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2021-10-24 10:42:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 10:42:06,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 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 21 [2021-10-24 10:42:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:06,195 INFO L225 Difference]: With dead ends: 149 [2021-10-24 10:42:06,195 INFO L226 Difference]: Without dead ends: 140 [2021-10-24 10:42:06,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 230.1ms TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:42:06,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-24 10:42:06,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2021-10-24 10:42:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 74 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-10-24 10:42:06,209 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2021-10-24 10:42:06,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:06,210 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-10-24 10:42:06,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-10-24 10:42:06,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-24 10:42:06,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:06,212 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] [2021-10-24 10:42:06,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:06,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:06,431 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:06,432 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-10-24 10:42:06,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:06,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322413669] [2021-10-24 10:42:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:06,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:06,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:06,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:06,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:42:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:06,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 10:42:06,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:07,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:07,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:07,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322413669] [2021-10-24 10:42:07,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322413669] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:07,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:07,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-24 10:42:07,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164894111] [2021-10-24 10:42:07,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-24 10:42:07,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-24 10:42:07,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:42:07,692 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:09,124 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2021-10-24 10:42:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-24 10:42:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 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 22 [2021-10-24 10:42:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:09,128 INFO L225 Difference]: With dead ends: 180 [2021-10-24 10:42:09,128 INFO L226 Difference]: Without dead ends: 178 [2021-10-24 10:42:09,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 807.8ms TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-10-24 10:42:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-24 10:42:09,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2021-10-24 10:42:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 88 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-10-24 10:42:09,179 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2021-10-24 10:42:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:09,180 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-10-24 10:42:09,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-10-24 10:42:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 10:42:09,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:09,187 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] [2021-10-24 10:42:09,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:09,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:09,407 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:09,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:09,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2021-10-24 10:42:09,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:09,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51516632] [2021-10-24 10:42:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:09,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:09,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:09,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:09,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:42:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:09,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 10:42:09,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:09,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:09,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:09,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51516632] [2021-10-24 10:42:09,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51516632] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:09,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:09,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-24 10:42:09,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179570533] [2021-10-24 10:42:09,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 10:42:09,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:09,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 10:42:09,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:42:09,930 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:10,723 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2021-10-24 10:42:10,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-24 10:42:10,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 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 23 [2021-10-24 10:42:10,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:10,726 INFO L225 Difference]: With dead ends: 166 [2021-10-24 10:42:10,726 INFO L226 Difference]: Without dead ends: 131 [2021-10-24 10:42:10,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 281.2ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:42:10,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-24 10:42:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2021-10-24 10:42:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3793103448275863) internal successors, (120), 88 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2021-10-24 10:42:10,743 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2021-10-24 10:42:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:10,743 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2021-10-24 10:42:10,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:10,744 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2021-10-24 10:42:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 10:42:10,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:10,746 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] [2021-10-24 10:42:10,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:10,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:10,966 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:10,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:10,967 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2021-10-24 10:42:10,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:10,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361335976] [2021-10-24 10:42:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:10,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:10,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:10,970 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:11,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 10:42:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:11,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:42:11,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:11,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:11,343 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:11,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361335976] [2021-10-24 10:42:11,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361335976] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:11,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:11,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:42:11,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871630980] [2021-10-24 10:42:11,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:42:11,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:42:11,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:42:11,347 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:11,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:11,445 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2021-10-24 10:42:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:42:11,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-24 10:42:11,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:11,449 INFO L225 Difference]: With dead ends: 157 [2021-10-24 10:42:11,449 INFO L226 Difference]: Without dead ends: 141 [2021-10-24 10:42:11,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:42:11,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-24 10:42:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2021-10-24 10:42:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-24 10:42:11,473 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-24 10:42:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:11,474 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-24 10:42:11,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-24 10:42:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 10:42:11,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:11,477 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] [2021-10-24 10:42:11,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:11,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:11,693 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:11,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:11,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2021-10-24 10:42:11,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:11,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573672274] [2021-10-24 10:42:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:11,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:11,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:11,701 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:11,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 10:42:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:11,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:42:11,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:11,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:12,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:12,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573672274] [2021-10-24 10:42:12,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573672274] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:12,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:12,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:42:12,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024422030] [2021-10-24 10:42:12,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:42:12,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:42:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:42:12,018 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:12,059 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-10-24 10:42:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:42:12,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-24 10:42:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:12,061 INFO L225 Difference]: With dead ends: 96 [2021-10-24 10:42:12,061 INFO L226 Difference]: Without dead ends: 94 [2021-10-24 10:42:12,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:42:12,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-24 10:42:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-10-24 10:42:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-24 10:42:12,074 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-24 10:42:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:12,074 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-24 10:42:12,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:12,075 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-24 10:42:12,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 10:42:12,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:12,077 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] [2021-10-24 10:42:12,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:12,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:12,301 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:12,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:12,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2021-10-24 10:42:12,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:12,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518006759] [2021-10-24 10:42:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:12,304 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:12,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:12,305 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:12,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 10:42:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:12,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 10:42:12,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:12,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:12,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:12,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518006759] [2021-10-24 10:42:12,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518006759] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:12,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:12,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-24 10:42:12,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109153200] [2021-10-24 10:42:12,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 10:42:12,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:12,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 10:42:12,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:42:12,931 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:13,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:13,376 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2021-10-24 10:42:13,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-24 10:42:13,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 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 25 [2021-10-24 10:42:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:13,379 INFO L225 Difference]: With dead ends: 131 [2021-10-24 10:42:13,379 INFO L226 Difference]: Without dead ends: 118 [2021-10-24 10:42:13,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 249.4ms TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:42:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-24 10:42:13,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2021-10-24 10:42:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 88 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-10-24 10:42:13,390 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2021-10-24 10:42:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:13,392 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-10-24 10:42:13,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:13,392 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-10-24 10:42:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 10:42:13,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:13,396 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] [2021-10-24 10:42:13,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:13,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:13,609 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:13,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:13,609 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2021-10-24 10:42:13,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:13,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456316819] [2021-10-24 10:42:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:13,610 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:13,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:13,612 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:13,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 10:42:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:13,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 10:42:13,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:14,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:14,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:14,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456316819] [2021-10-24 10:42:14,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456316819] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:14,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:14,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-10-24 10:42:14,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202125302] [2021-10-24 10:42:14,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 10:42:14,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:14,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 10:42:14,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-24 10:42:14,186 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:14,740 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-10-24 10:42:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-24 10:42:14,741 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 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 25 [2021-10-24 10:42:14,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:14,742 INFO L225 Difference]: With dead ends: 114 [2021-10-24 10:42:14,742 INFO L226 Difference]: Without dead ends: 78 [2021-10-24 10:42:14,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 302.1ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-24 10:42:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-24 10:42:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-24 10:42:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 75 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-24 10:42:14,750 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2021-10-24 10:42:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:14,750 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-24 10:42:14,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:14,751 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-24 10:42:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 10:42:14,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:14,752 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] [2021-10-24 10:42:14,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:14,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:14,965 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:14,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:14,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2021-10-24 10:42:14,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:14,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411977670] [2021-10-24 10:42:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:14,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:14,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:14,968 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:14,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-24 10:42:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:15,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 10:42:15,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:15,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:15,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:15,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411977670] [2021-10-24 10:42:15,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411977670] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:15,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:15,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-24 10:42:15,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378916931] [2021-10-24 10:42:15,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 10:42:15,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:15,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 10:42:15,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:42:15,564 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:15,881 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-10-24 10:42:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-24 10:42:15,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 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 25 [2021-10-24 10:42:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:15,883 INFO L225 Difference]: With dead ends: 84 [2021-10-24 10:42:15,883 INFO L226 Difference]: Without dead ends: 74 [2021-10-24 10:42:15,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 228.9ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:42:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-24 10:42:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-24 10:42:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 73 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-10-24 10:42:15,891 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2021-10-24 10:42:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:15,891 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-10-24 10:42:15,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:15,891 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-10-24 10:42:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 10:42:15,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:15,893 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] [2021-10-24 10:42:15,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:16,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:16,108 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:16,109 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2021-10-24 10:42:16,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:16,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695220060] [2021-10-24 10:42:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:16,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:16,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:16,111 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:16,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-24 10:42:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:16,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:42:16,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:16,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:17,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:17,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695220060] [2021-10-24 10:42:17,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695220060] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:17,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:17,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-24 10:42:17,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412604862] [2021-10-24 10:42:17,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 10:42:17,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:17,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 10:42:17,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:42:17,107 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 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) [2021-10-24 10:42:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:17,523 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-10-24 10:42:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 10:42:17,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 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 26 [2021-10-24 10:42:17,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:17,525 INFO L225 Difference]: With dead ends: 82 [2021-10-24 10:42:17,525 INFO L226 Difference]: Without dead ends: 74 [2021-10-24 10:42:17,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 466.5ms TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:42:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-24 10:42:17,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-24 10:42:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 73 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-10-24 10:42:17,532 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2021-10-24 10:42:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:17,532 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-10-24 10:42:17,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 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) [2021-10-24 10:42:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-10-24 10:42:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 10:42:17,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:17,533 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] [2021-10-24 10:42:17,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:17,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:17,734 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:17,734 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2021-10-24 10:42:17,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:17,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388139460] [2021-10-24 10:42:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:17,735 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:17,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:17,736 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:17,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-24 10:42:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:18,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 10:42:18,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:18,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:19,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:19,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388139460] [2021-10-24 10:42:19,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388139460] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:19,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:19,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-24 10:42:19,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562523944] [2021-10-24 10:42:19,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-24 10:42:19,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-24 10:42:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-24 10:42:19,191 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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) [2021-10-24 10:42:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:21,265 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-10-24 10:42:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-24 10:42:21,266 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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 26 [2021-10-24 10:42:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:21,267 INFO L225 Difference]: With dead ends: 154 [2021-10-24 10:42:21,267 INFO L226 Difference]: Without dead ends: 134 [2021-10-24 10:42:21,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1415.7ms TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-10-24 10:42:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-24 10:42:21,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2021-10-24 10:42:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2021-10-24 10:42:21,276 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2021-10-24 10:42:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:21,277 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2021-10-24 10:42:21,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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) [2021-10-24 10:42:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2021-10-24 10:42:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 10:42:21,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:21,278 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] [2021-10-24 10:42:21,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:21,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:21,493 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:21,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2021-10-24 10:42:21,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:21,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960628710] [2021-10-24 10:42:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:21,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:21,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:21,495 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:21,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-24 10:42:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:21,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-24 10:42:21,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:22,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:22,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:22,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960628710] [2021-10-24 10:42:22,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960628710] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:22,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:22,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2021-10-24 10:42:22,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221734620] [2021-10-24 10:42:22,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-24 10:42:22,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:22,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-24 10:42:22,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:42:22,814 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:25,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:25,014 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2021-10-24 10:42:25,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-24 10:42:25,015 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 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 27 [2021-10-24 10:42:25,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:25,016 INFO L225 Difference]: With dead ends: 195 [2021-10-24 10:42:25,016 INFO L226 Difference]: Without dead ends: 158 [2021-10-24 10:42:25,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1763.9ms TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2021-10-24 10:42:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-24 10:42:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2021-10-24 10:42:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 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) [2021-10-24 10:42:25,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-10-24 10:42:25,025 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-10-24 10:42:25,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:25,025 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-10-24 10:42:25,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:25,026 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-10-24 10:42:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 10:42:25,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:25,026 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] [2021-10-24 10:42:25,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:25,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:25,227 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:25,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2021-10-24 10:42:25,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:25,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063410705] [2021-10-24 10:42:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:25,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:25,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:25,230 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:25,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-24 10:42:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:25,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-24 10:42:25,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:26,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:26,301 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:26,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063410705] [2021-10-24 10:42:26,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063410705] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:26,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:26,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-10-24 10:42:26,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533837831] [2021-10-24 10:42:26,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 10:42:26,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:26,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 10:42:26,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-24 10:42:26,303 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:27,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:27,360 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2021-10-24 10:42:27,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-24 10:42:27,360 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 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 28 [2021-10-24 10:42:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:27,361 INFO L225 Difference]: With dead ends: 125 [2021-10-24 10:42:27,361 INFO L226 Difference]: Without dead ends: 101 [2021-10-24 10:42:27,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 841.9ms TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2021-10-24 10:42:27,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-24 10:42:27,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2021-10-24 10:42:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-24 10:42:27,370 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-10-24 10:42:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:27,370 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-24 10:42:27,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:27,371 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-24 10:42:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 10:42:27,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:27,372 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] [2021-10-24 10:42:27,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:27,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:27,577 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:27,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:27,577 INFO L82 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2021-10-24 10:42:27,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:27,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211625418] [2021-10-24 10:42:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:27,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:27,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:27,580 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:27,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-24 10:42:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:28,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:42:28,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:28,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:28,789 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:28,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211625418] [2021-10-24 10:42:28,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211625418] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:28,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:28,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-24 10:42:28,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547494082] [2021-10-24 10:42:28,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 10:42:28,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:28,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 10:42:28,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:42:28,791 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:30,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:30,660 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-24 10:42:30,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:42:30,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-24 10:42:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:30,662 INFO L225 Difference]: With dead ends: 52 [2021-10-24 10:42:30,662 INFO L226 Difference]: Without dead ends: 41 [2021-10-24 10:42:30,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 767.1ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:42:30,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-24 10:42:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-24 10:42:30,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-10-24 10:42:30,670 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-10-24 10:42:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:30,670 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-10-24 10:42:30,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-10-24 10:42:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 10:42:30,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:30,672 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] [2021-10-24 10:42:30,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:30,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:30,872 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:30,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2021-10-24 10:42:30,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:30,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570716096] [2021-10-24 10:42:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:30,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:30,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:30,875 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:30,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-24 10:42:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:31,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-24 10:42:31,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:31,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:31,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:31,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570716096] [2021-10-24 10:42:31,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570716096] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:31,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:31,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-24 10:42:31,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851955026] [2021-10-24 10:42:31,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-24 10:42:31,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:31,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-24 10:42:31,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:42:31,884 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2021-10-24 10:42:32,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:32,635 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-10-24 10:42:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 10:42:32,635 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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 32 [2021-10-24 10:42:32,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:32,636 INFO L225 Difference]: With dead ends: 55 [2021-10-24 10:42:32,636 INFO L226 Difference]: Without dead ends: 41 [2021-10-24 10:42:32,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 599.4ms TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-24 10:42:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-24 10:42:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-24 10:42:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-24 10:42:32,642 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2021-10-24 10:42:32,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:32,642 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-24 10:42:32,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2021-10-24 10:42:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-24 10:42:32,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-24 10:42:32,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:32,643 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] [2021-10-24 10:42:32,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:32,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:32,844 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:32,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:32,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2021-10-24 10:42:32,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:32,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095020697] [2021-10-24 10:42:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:32,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:32,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:32,847 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:32,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-24 10:42:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:33,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 10:42:33,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:34,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:34,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:34,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095020697] [2021-10-24 10:42:34,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095020697] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:34,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:34,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-24 10:42:34,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247140072] [2021-10-24 10:42:34,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 10:42:34,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 10:42:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-24 10:42:34,266 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:34,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:34,965 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2021-10-24 10:42:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-24 10:42:34,967 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 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 33 [2021-10-24 10:42:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:34,968 INFO L225 Difference]: With dead ends: 79 [2021-10-24 10:42:34,968 INFO L226 Difference]: Without dead ends: 61 [2021-10-24 10:42:34,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 748.8ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-24 10:42:34,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-24 10:42:34,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2021-10-24 10:42:34,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-24 10:42:34,975 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2021-10-24 10:42:34,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:34,975 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-24 10:42:34,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-24 10:42:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-24 10:42:34,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:42:34,977 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] [2021-10-24 10:42:35,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:35,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:35,193 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:42:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:42:35,193 INFO L82 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2021-10-24 10:42:35,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:42:35,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249050704] [2021-10-24 10:42:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:42:35,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:42:35,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:42:35,195 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:42:35,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-24 10:42:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:42:35,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:42:35,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:42:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:35,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:42:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:42:35,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:42:35,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249050704] [2021-10-24 10:42:35,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249050704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:42:35,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:42:35,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:42:35,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600740663] [2021-10-24 10:42:35,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:42:35,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:42:35,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:42:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:42:35,816 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:35,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:42:35,869 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-24 10:42:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:42:35,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-10-24 10:42:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:42:35,870 INFO L225 Difference]: With dead ends: 39 [2021-10-24 10:42:35,870 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:42:35,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:42:35,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:42:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:42:35,871 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) [2021-10-24 10:42:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:42:35,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-24 10:42:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:42:35,871 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:42:35,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:42:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:42:35,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:42:35,874 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:42:35,874 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:42:35,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-24 10:42:36,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:42:36,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:42:36,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:36,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:37,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:42:44,939 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2021-10-24 10:42:44,939 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-24 10:42:44,939 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:42:44,940 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-24 10:42:44,940 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-10-24 10:42:44,940 INFO L857 garLoopResultBuilder]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2021-10-24 10:42:44,940 INFO L857 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2021-10-24 10:42:44,940 INFO L857 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-10-24 10:42:44,941 INFO L857 garLoopResultBuilder]: For program point L70-3(lines 70 71) no Hoare annotation was computed. [2021-10-24 10:42:44,941 INFO L857 garLoopResultBuilder]: For program point L70-5(lines 70 86) no Hoare annotation was computed. [2021-10-24 10:42:44,941 INFO L857 garLoopResultBuilder]: For program point L70-7(lines 70 86) no Hoare annotation was computed. [2021-10-24 10:42:44,941 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-24 10:42:44,941 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-24 10:42:44,941 INFO L857 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2021-10-24 10:42:44,942 INFO L860 garLoopResultBuilder]: At program point L88(lines 61 89) the Hoare annotation is: true [2021-10-24 10:42:44,942 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-10-24 10:42:44,942 INFO L857 garLoopResultBuilder]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2021-10-24 10:42:44,942 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-24 10:42:44,943 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-24 10:42:44,943 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2021-10-24 10:42:44,944 INFO L857 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2021-10-24 10:42:44,944 INFO L857 garLoopResultBuilder]: For program point L82-2(lines 82 85) no Hoare annotation was computed. [2021-10-24 10:42:44,944 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:42:44,945 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-10-24 10:42:44,945 INFO L857 garLoopResultBuilder]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2021-10-24 10:42:44,945 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-24 10:42:44,945 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-10-24 10:42:44,945 INFO L853 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (.cse2 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0 (not .cse1) .cse2) (and (not .cse0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) .cse2 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-24 10:42:44,945 INFO L857 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-10-24 10:42:44,945 INFO L857 garLoopResultBuilder]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2021-10-24 10:42:44,945 INFO L853 garLoopResultBuilder]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) .cse1) (and .cse0 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-24 10:42:44,945 INFO L857 garLoopResultBuilder]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2021-10-24 10:42:44,946 INFO L853 garLoopResultBuilder]: At program point L34(lines 14 35) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (.cse2 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0 (not .cse1) .cse2) (and (not .cse0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) .cse2 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= ULTIMATE.start_fmin_float_~x (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))))) [2021-10-24 10:42:44,946 INFO L853 garLoopResultBuilder]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (let ((.cse2 (= ULTIMATE.start_fmin_float_~y .cse1)) (.cse3 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse0 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))) (or (and .cse0 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (not (fp.eq .cse1 .cse1)) .cse2 .cse3 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) .cse3 (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (not .cse0))))) [2021-10-24 10:42:44,946 INFO L853 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-24 10:42:44,946 INFO L853 garLoopResultBuilder]: At program point L59-1(line 59) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2021-10-24 10:42:44,946 INFO L853 garLoopResultBuilder]: At program point L59-2(line 59) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short20|)) (.cse2 (not |ULTIMATE.start_main_#t~short16|)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse1) .cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse2 .cse1))) [2021-10-24 10:42:44,946 INFO L853 garLoopResultBuilder]: At program point L59-3(line 59) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short20|) |ULTIMATE.start_main_#t~short19| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0))) (not |ULTIMATE.start_main_#t~short16|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2021-10-24 10:42:44,946 INFO L853 garLoopResultBuilder]: At program point L59-4(line 59) the Hoare annotation is: (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq .cse0 .cse0)) .cse1 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)) (and (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse2 .cse1 .cse3) (and (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (= ULTIMATE.start_fmin_float_~y .cse0) .cse2 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) .cse1 .cse3))) [2021-10-24 10:42:44,947 INFO L853 garLoopResultBuilder]: At program point L59-5(line 59) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse2 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and |ULTIMATE.start_main_#t~short24| (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (= ULTIMATE.start_fmin_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) .cse1 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) .cse2) (and |ULTIMATE.start_main_#t~short24| .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse1 .cse2))) [2021-10-24 10:42:44,947 INFO L853 garLoopResultBuilder]: At program point L59-6(line 59) the Hoare annotation is: (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)) (and (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|))) [2021-10-24 10:42:44,947 INFO L853 garLoopResultBuilder]: At program point L59-7(line 59) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)) [2021-10-24 10:42:44,947 INFO L857 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-24 10:42:44,947 INFO L857 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-10-24 10:42:44,947 INFO L857 garLoopResultBuilder]: For program point L76-2(lines 76 79) no Hoare annotation was computed. [2021-10-24 10:42:44,947 INFO L857 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-10-24 10:42:44,947 INFO L853 garLoopResultBuilder]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse2 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse0 .cse1) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (= ULTIMATE.start_fmin_float_~y .cse2) .cse0 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (not (fp.eq .cse2 .cse2)) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)))) [2021-10-24 10:42:44,952 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:42:44,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:42:44 BoogieIcfgContainer [2021-10-24 10:42:44,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:42:44,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:42:44,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:42:44,990 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:42:44,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:42:02" (3/4) ... [2021-10-24 10:42:44,994 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:42:45,010 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-24 10:42:45,011 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-24 10:42:45,012 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:42:45,012 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:42:45,061 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) [2021-10-24 10:42:45,062 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2021-10-24 10:42:45,062 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && 0bv32 == \result) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) [2021-10-24 10:42:45,063 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && aux-!isnan_float(x) && isnan_float(y)-aux) && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) [2021-10-24 10:42:45,064 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) [2021-10-24 10:42:45,065 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2021-10-24 10:42:45,065 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y)) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) [2021-10-24 10:42:45,066 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || ((((y == x && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result) [2021-10-24 10:42:45,067 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (((((~fp.eq~FLOAT(y, y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result)) || (((((((~fp.eq~FLOAT(res, y) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) && 1bv32 == \result) [2021-10-24 10:42:45,067 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == y) && 1bv32 == \result) || ((((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(y, y)) && !(0bv32 == \result)) [2021-10-24 10:42:45,069 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) [2021-10-24 10:42:45,070 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) [2021-10-24 10:42:45,071 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) [2021-10-24 10:42:45,113 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:42:45,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:42:45,115 INFO L168 Benchmark]: Toolchain (without parser) took 43848.85 ms. Allocated memory was 62.9 MB in the beginning and 98.6 MB in the end (delta: 35.7 MB). Free memory was 42.7 MB in the beginning and 64.7 MB in the end (delta: -22.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:45,115 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:42:45,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.11 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 45.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:45,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.17 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 43.7 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:42:45,117 INFO L168 Benchmark]: Boogie Preprocessor took 68.51 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 42.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:45,117 INFO L168 Benchmark]: RCFGBuilder took 794.72 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 42.1 MB in the beginning and 63.1 MB in the end (delta: -21.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:45,118 INFO L168 Benchmark]: TraceAbstraction took 42295.94 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 62.8 MB in the beginning and 69.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 64.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:45,118 INFO L168 Benchmark]: Witness Printer took 124.18 ms. Allocated memory is still 98.6 MB. Free memory was 69.9 MB in the beginning and 64.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:42:45,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 470.11 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 45.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.17 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 43.7 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.51 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 42.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 794.72 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 42.1 MB in the beginning and 63.1 MB in the end (delta: -21.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 42295.94 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 62.8 MB in the beginning and 69.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 64.2 MB. Max. memory is 16.1 GB. * Witness Printer took 124.18 ms. Allocated memory is still 98.6 MB. Free memory was 69.9 MB in the beginning and 64.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 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: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 83]: 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, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 42179.2ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 44.0ms, AutomataDifference: 13697.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 8863.7ms, InitialAbstractionConstructionTime: 14.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1146 SDtfs, 2600 SDslu, 4552 SDs, 0 SdLazy, 2015 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6962.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 774 SyntacticMatches, 6 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 8817.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 256.4ms AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 617 HoareAnnotationTreeSize, 14 FomulaSimplifications, 643151 FormulaSimplificationTreeSizeReduction, 927.7ms HoareSimplificationTime, 14 FomulaSimplificationsInter, 19731 FormulaSimplificationTreeSizeReductionInter, 7926.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 272.0ms SsaConstructionTime, 955.2ms SatisfiabilityAnalysisTime, 10377.5ms InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 31 QuantifiedInterpolants, 3559 SizeOfPredicates, 145 NumberOfNonLiveVariables, 1646 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || ((((y == x && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && 0bv32 == \result) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y)) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (((((~fp.eq~FLOAT(y, y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result)) || (((((((~fp.eq~FLOAT(res, y) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) && 1bv32 == \result) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == y) && 1bv32 == \result) || ((((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(y, y)) && !(0bv32 == \result)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && aux-!isnan_float(x) && isnan_float(y)-aux) && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:42:45,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8117a05e-a6a9-4ff5-8385-f8f726993754/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...