./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c14635b48a1cad23828e85d86c9c53e48c3a7731 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c14635b48a1cad23828e85d86c9c53e48c3a7731 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:38:32,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:38:32,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:38:32,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:38:32,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:38:32,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:38:32,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:38:32,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:38:32,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:38:32,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:38:32,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:38:32,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:38:32,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:38:32,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:38:32,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:38:32,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:38:32,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:38:32,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:38:32,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:38:32,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:38:32,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:38:32,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:38:32,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:38:32,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:38:32,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:38:32,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:38:32,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:38:32,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:38:32,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:38:32,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:38:32,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:38:32,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:38:32,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:38:32,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:38:32,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:38:32,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:38:32,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:38:32,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:38:32,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:38:32,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:38:32,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:38:32,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:38:32,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:38:32,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:38:32,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:38:32,319 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:38:32,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:38:32,320 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:38:32,320 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:38:32,320 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:38:32,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:38:32,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:38:32,322 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:38:32,322 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:38:32,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:38:32,323 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:38:32,323 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:38:32,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:38:32,324 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:38:32,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:38:32,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:38:32,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:38:32,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:38:32,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:38:32,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:38:32,325 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:38:32,325 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:38:32,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:38:32,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:38:32,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:38:32,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:38:32,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:38:32,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:38:32,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:38:32,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:38:32,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:38:32,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:38:32,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:38:32,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:38:32,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:38:32,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:38:32,329 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_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c14635b48a1cad23828e85d86c9c53e48c3a7731 [2021-10-13 07:38:32,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:38:32,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:38:32,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:38:32,671 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:38:32,671 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:38:32,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2021-10-13 07:38:32,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/data/82282c1ec/e21bb16dd36041f49ef5b5d3b22f3c11/FLAGffce77f54 [2021-10-13 07:38:33,239 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:38:33,242 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2021-10-13 07:38:33,262 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/data/82282c1ec/e21bb16dd36041f49ef5b5d3b22f3c11/FLAGffce77f54 [2021-10-13 07:38:33,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/data/82282c1ec/e21bb16dd36041f49ef5b5d3b22f3c11 [2021-10-13 07:38:33,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:38:33,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:38:33,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:38:33,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:38:33,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:38:33,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:33" (1/1) ... [2021-10-13 07:38:33,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@731b8675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:33, skipping insertion in model container [2021-10-13 07:38:33,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:33" (1/1) ... [2021-10-13 07:38:33,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:38:33,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:38:33,991 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_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c[37478,37491] [2021-10-13 07:38:34,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:38:34,021 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:38:34,101 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_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c[37478,37491] [2021-10-13 07:38:34,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:38:34,116 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:38:34,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34 WrapperNode [2021-10-13 07:38:34,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:38:34,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:38:34,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:38:34,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:38:34,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (1/1) ... [2021-10-13 07:38:34,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (1/1) ... [2021-10-13 07:38:34,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:38:34,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:38:34,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:38:34,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:38:34,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (1/1) ... [2021-10-13 07:38:34,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (1/1) ... [2021-10-13 07:38:34,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (1/1) ... [2021-10-13 07:38:34,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (1/1) ... [2021-10-13 07:38:34,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (1/1) ... [2021-10-13 07:38:34,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (1/1) ... [2021-10-13 07:38:34,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (1/1) ... [2021-10-13 07:38:34,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:38:34,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:38:34,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:38:34,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:38:34,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (1/1) ... [2021-10-13 07:38:34,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:38:34,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:34,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:38:34,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:38:34,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:38:34,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:38:34,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:38:34,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:38:34,556 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:38:35,099 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-10-13 07:38:35,099 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-10-13 07:38:35,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:38:35,572 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:38:35,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:35 BoogieIcfgContainer [2021-10-13 07:38:35,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:38:35,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:38:35,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:38:35,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:38:35,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:38:33" (1/3) ... [2021-10-13 07:38:35,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5055d2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:35, skipping insertion in model container [2021-10-13 07:38:35,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:34" (2/3) ... [2021-10-13 07:38:35,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5055d2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:35, skipping insertion in model container [2021-10-13 07:38:35,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:35" (3/3) ... [2021-10-13 07:38:35,589 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-1a.c [2021-10-13 07:38:35,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:38:35,595 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:38:35,649 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:38:35,655 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:38:35,655 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:38:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 83 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:35,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:38:35,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:35,691 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:35,691 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:35,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1895066675, now seen corresponding path program 1 times [2021-10-13 07:38:35,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:35,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280753319] [2021-10-13 07:38:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:35,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:35,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:35,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280753319] [2021-10-13 07:38:35,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280753319] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:35,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:35,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:38:35,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251259899] [2021-10-13 07:38:35,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:35,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:35,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:35,940 INFO L87 Difference]: Start difference. First operand has 84 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 83 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:36,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:36,096 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2021-10-13 07:38:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:36,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-10-13 07:38:36,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:36,110 INFO L225 Difference]: With dead ends: 169 [2021-10-13 07:38:36,110 INFO L226 Difference]: Without dead ends: 83 [2021-10-13 07:38:36,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-13 07:38:36,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-13 07:38:36,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 82 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) [2021-10-13 07:38:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2021-10-13 07:38:36,160 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2021-10-13 07:38:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:36,160 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2021-10-13 07:38:36,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2021-10-13 07:38:36,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:38:36,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:36,162 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:36,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:38:36,163 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:36,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:36,164 INFO L82 PathProgramCache]: Analyzing trace with hash 9926788, now seen corresponding path program 1 times [2021-10-13 07:38:36,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:36,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061466455] [2021-10-13 07:38:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:36,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:36,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:36,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061466455] [2021-10-13 07:38:36,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061466455] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:36,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:36,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:38:36,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31881263] [2021-10-13 07:38:36,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:36,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:36,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:36,313 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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) [2021-10-13 07:38:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:36,495 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2021-10-13 07:38:36,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:36,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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 28 [2021-10-13 07:38:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:36,502 INFO L225 Difference]: With dead ends: 178 [2021-10-13 07:38:36,503 INFO L226 Difference]: Without dead ends: 98 [2021-10-13 07:38:36,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-13 07:38:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-10-13 07:38:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.431578947368421) internal successors, (136), 95 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2021-10-13 07:38:36,535 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2021-10-13 07:38:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:36,535 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2021-10-13 07:38:36,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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) [2021-10-13 07:38:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2021-10-13 07:38:36,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 07:38:36,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:36,539 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:36,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:38:36,542 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:36,546 INFO L82 PathProgramCache]: Analyzing trace with hash 926223436, now seen corresponding path program 1 times [2021-10-13 07:38:36,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:36,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795119890] [2021-10-13 07:38:36,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:36,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:38:36,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:36,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795119890] [2021-10-13 07:38:36,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795119890] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:36,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:36,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:38:36,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517671672] [2021-10-13 07:38:36,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:36,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:36,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:36,656 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:36,799 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2021-10-13 07:38:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:36,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 07:38:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:36,801 INFO L225 Difference]: With dead ends: 206 [2021-10-13 07:38:36,802 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 07:38:36,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:36,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 07:38:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-10-13 07:38:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4) internal successors, (154), 110 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2021-10-13 07:38:36,843 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2021-10-13 07:38:36,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:36,844 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2021-10-13 07:38:36,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:36,844 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2021-10-13 07:38:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 07:38:36,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:36,846 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:36,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:38:36,847 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:36,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1745436620, now seen corresponding path program 1 times [2021-10-13 07:38:36,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:36,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449687308] [2021-10-13 07:38:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:36,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:38:36,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:36,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449687308] [2021-10-13 07:38:36,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449687308] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:38:36,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296740440] [2021-10-13 07:38:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:36,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:36,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:36,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:38:37,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:38:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:37,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:38:37,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:38:37,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:38:37,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296740440] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:37,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1773152751] [2021-10-13 07:38:37,805 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2021-10-13 07:38:37,805 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:38:37,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:38:37,821 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:38:37,822 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:38:37,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:37,961 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:38:37,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:37,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:38:37,964 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:38:37,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:37,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:38:37,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-13 07:38:38,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:38:38,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,087 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:38:38,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:38:38,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,135 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:38:38,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:38:38,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,179 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:38:38,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:38:38,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,219 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-13 07:38:38,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:38:38,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,262 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-13 07:38:38,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:38,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:38:38,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:38,304 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-13 07:38:38,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:38:38,564 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:38,775 INFO L180 QuantifierPusher]: treesize reduction 60, result has 96.8 percent of original size [2021-10-13 07:38:38,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1796 [2021-10-13 07:38:38,839 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-10-13 07:38:38,840 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:1838, output treesize:1796 [2021-10-13 07:38:38,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:39,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-13 07:38:39,063 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_14| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:38:39,067 INFO L168 Benchmark]: Toolchain (without parser) took 5483.36 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 93.7 MB in the beginning and 84.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:39,069 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:38:39,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.26 ms. Allocated memory is still 125.8 MB. Free memory was 93.3 MB in the beginning and 98.4 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:39,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.47 ms. Allocated memory is still 125.8 MB. Free memory was 98.4 MB in the beginning and 96.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:39,071 INFO L168 Benchmark]: Boogie Preprocessor took 85.96 ms. Allocated memory is still 125.8 MB. Free memory was 96.3 MB in the beginning and 94.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:39,072 INFO L168 Benchmark]: RCFGBuilder took 1298.15 ms. Allocated memory is still 125.8 MB. Free memory was 94.1 MB in the beginning and 97.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 54.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:39,072 INFO L168 Benchmark]: TraceAbstraction took 3488.93 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 96.7 MB in the beginning and 84.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 73.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:39,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 532.26 ms. Allocated memory is still 125.8 MB. Free memory was 93.3 MB in the beginning and 98.4 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.47 ms. Allocated memory is still 125.8 MB. Free memory was 98.4 MB in the beginning and 96.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.96 ms. Allocated memory is still 125.8 MB. Free memory was 96.3 MB in the beginning and 94.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1298.15 ms. Allocated memory is still 125.8 MB. Free memory was 94.1 MB in the beginning and 97.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 54.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3488.93 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 96.7 MB in the beginning and 84.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 73.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:38:39,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:38:41,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:38:41,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:38:41,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:38:41,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:38:41,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:38:41,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:38:41,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:38:41,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:38:41,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:38:41,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:38:41,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:38:41,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:38:41,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:38:41,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:38:41,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:38:41,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:38:41,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:38:41,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:38:41,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:38:41,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:38:41,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:38:41,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:38:41,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:38:41,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:38:41,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:38:41,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:38:41,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:38:41,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:38:41,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:38:41,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:38:41,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:38:41,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:38:41,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:38:41,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:38:41,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:38:41,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:38:41,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:38:41,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:38:41,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:38:41,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:38:41,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:38:42,040 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:38:42,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:38:42,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:38:42,042 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:38:42,043 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:38:42,043 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:38:42,043 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:38:42,043 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:38:42,044 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:38:42,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:38:42,047 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:38:42,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:38:42,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:38:42,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:38:42,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:38:42,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:38:42,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:38:42,049 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:38:42,049 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:38:42,049 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:38:42,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:38:42,050 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:38:42,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:38:42,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:38:42,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:38:42,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:38:42,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:38:42,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:38:42,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:38:42,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:38:42,052 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:38:42,052 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:38:42,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:38:42,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:38:42,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:38:42,053 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_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c14635b48a1cad23828e85d86c9c53e48c3a7731 [2021-10-13 07:38:42,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:38:42,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:38:42,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:38:42,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:38:42,500 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:38:42,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2021-10-13 07:38:42,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/data/d9005ac55/add5332b434f445499a4ede896a93983/FLAG6bf7c7c83 [2021-10-13 07:38:43,217 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:38:43,217 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2021-10-13 07:38:43,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/data/d9005ac55/add5332b434f445499a4ede896a93983/FLAG6bf7c7c83 [2021-10-13 07:38:43,530 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/data/d9005ac55/add5332b434f445499a4ede896a93983 [2021-10-13 07:38:43,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:38:43,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:38:43,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:38:43,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:38:43,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:38:43,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:43,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201860d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43, skipping insertion in model container [2021-10-13 07:38:43,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:43,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:38:43,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:38:43,836 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_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c[37478,37491] [2021-10-13 07:38:43,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:38:43,873 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:38:43,933 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_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c[37478,37491] [2021-10-13 07:38:43,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:38:43,967 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:38:43,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43 WrapperNode [2021-10-13 07:38:43,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:38:43,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:38:43,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:38:43,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:38:43,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:44,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:44,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:38:44,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:38:44,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:38:44,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:38:44,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:44,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:44,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:44,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:44,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:44,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:44,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:44,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:38:44,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:38:44,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:38:44,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:38:44,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (1/1) ... [2021-10-13 07:38:44,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:38:44,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:44,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:38:44,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:38:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:38:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:38:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:38:44,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:38:44,418 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:38:45,031 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-10-13 07:38:45,031 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-10-13 07:38:45,055 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:38:45,055 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:38:45,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:45 BoogieIcfgContainer [2021-10-13 07:38:45,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:38:45,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:38:45,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:38:45,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:38:45,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:38:43" (1/3) ... [2021-10-13 07:38:45,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396fbc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:45, skipping insertion in model container [2021-10-13 07:38:45,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:43" (2/3) ... [2021-10-13 07:38:45,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396fbc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:45, skipping insertion in model container [2021-10-13 07:38:45,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:45" (3/3) ... [2021-10-13 07:38:45,069 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-1a.c [2021-10-13 07:38:45,075 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:38:45,075 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:38:45,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:38:45,144 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:38:45,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:38:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:38:45,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:45,172 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] [2021-10-13 07:38:45,173 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:45,179 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2021-10-13 07:38:45,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:45,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053136896] [2021-10-13 07:38:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:45,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:45,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:45,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:45,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:38:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:45,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:38:45,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:45,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:45,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:45,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053136896] [2021-10-13 07:38:45,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053136896] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:45,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:45,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:38:45,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933518989] [2021-10-13 07:38:45,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:45,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:45,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:45,621 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:45,824 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2021-10-13 07:38:45,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:45,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 [2021-10-13 07:38:45,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:45,837 INFO L225 Difference]: With dead ends: 247 [2021-10-13 07:38:45,837 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 07:38:45,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:45,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 07:38:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-13 07:38:45,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 112 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2021-10-13 07:38:45,885 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2021-10-13 07:38:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:45,885 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2021-10-13 07:38:45,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2021-10-13 07:38:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 07:38:45,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:45,895 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:45,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:46,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:46,107 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:46,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:46,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2021-10-13 07:38:46,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:46,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042491308] [2021-10-13 07:38:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:46,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:46,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:46,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:38:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:46,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:38:46,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:46,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:46,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:46,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042491308] [2021-10-13 07:38:46,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042491308] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:46,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:46,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:38:46,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148169492] [2021-10-13 07:38:46,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:46,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:46,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:46,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:46,584 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:46,797 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2021-10-13 07:38:46,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:46,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 07:38:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:46,800 INFO L225 Difference]: With dead ends: 233 [2021-10-13 07:38:46,800 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 07:38:46,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 07:38:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-10-13 07:38:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5039370078740157) internal successors, (191), 127 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2021-10-13 07:38:46,819 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2021-10-13 07:38:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:46,820 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2021-10-13 07:38:46,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2021-10-13 07:38:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 07:38:46,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:46,823 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:46,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:47,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:47,042 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:47,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:47,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2021-10-13 07:38:47,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:47,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835495584] [2021-10-13 07:38:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:47,045 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:47,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:47,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:47,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:38:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:47,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:38:47,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:38:47,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:38:47,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:47,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835495584] [2021-10-13 07:38:47,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835495584] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:47,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:47,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:38:47,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608093310] [2021-10-13 07:38:47,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:47,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:47,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:47,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:47,553 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:47,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:47,592 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2021-10-13 07:38:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:47,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 07:38:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:47,595 INFO L225 Difference]: With dead ends: 271 [2021-10-13 07:38:47,595 INFO L226 Difference]: Without dead ends: 154 [2021-10-13 07:38:47,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-13 07:38:47,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-13 07:38:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 153 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2021-10-13 07:38:47,617 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2021-10-13 07:38:47,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:47,618 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2021-10-13 07:38:47,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2021-10-13 07:38:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 07:38:47,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:47,621 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:47,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 07:38:47,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:47,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:47,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:47,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2021-10-13 07:38:47,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:47,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111780093] [2021-10-13 07:38:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:47,834 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:47,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:47,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:47,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:38:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:48,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:38:48,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:38:48,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:38:48,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:48,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111780093] [2021-10-13 07:38:48,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111780093] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:48,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:48,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:38:48,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951022062] [2021-10-13 07:38:48,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:48,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:48,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:48,317 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:48,497 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2021-10-13 07:38:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:48,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 07:38:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:48,500 INFO L225 Difference]: With dead ends: 292 [2021-10-13 07:38:48,500 INFO L226 Difference]: Without dead ends: 175 [2021-10-13 07:38:48,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:48,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-13 07:38:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-10-13 07:38:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4470588235294117) internal successors, (246), 170 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2021-10-13 07:38:48,514 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2021-10-13 07:38:48,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:48,515 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2021-10-13 07:38:48,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:48,516 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2021-10-13 07:38:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 07:38:48,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:48,519 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:48,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:48,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:48,733 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:48,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:48,733 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2021-10-13 07:38:48,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:48,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804167090] [2021-10-13 07:38:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:48,735 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:48,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:48,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:48,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:38:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:48,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:38:48,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:38:49,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:38:49,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:49,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804167090] [2021-10-13 07:38:49,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804167090] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:49,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [986483980] [2021-10-13 07:38:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:49,566 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:38:49,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:38:49,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:38:49,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-13 07:38:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:49,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:38:49,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:38:50,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:38:50,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [986483980] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:50,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:38:50,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:38:50,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366006659] [2021-10-13 07:38:50,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:38:50,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:38:50,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:38:50,268 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:50,344 INFO L93 Difference]: Finished difference Result 567 states and 833 transitions. [2021-10-13 07:38:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:38:50,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-13 07:38:50,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:50,352 INFO L225 Difference]: With dead ends: 567 [2021-10-13 07:38:50,353 INFO L226 Difference]: Without dead ends: 433 [2021-10-13 07:38:50,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 45.2ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:38:50,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-10-13 07:38:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2021-10-13 07:38:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.4560185185185186) internal successors, (629), 432 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 629 transitions. [2021-10-13 07:38:50,413 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 629 transitions. Word has length 68 [2021-10-13 07:38:50,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:50,416 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 629 transitions. [2021-10-13 07:38:50,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 629 transitions. [2021-10-13 07:38:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 07:38:50,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:50,434 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:50,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:50,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:50,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:38:50,843 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:50,843 INFO L82 PathProgramCache]: Analyzing trace with hash 562572643, now seen corresponding path program 1 times [2021-10-13 07:38:50,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:50,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476282575] [2021-10-13 07:38:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:50,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:50,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:50,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:50,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:38:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:51,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:38:51,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:38:51,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:38:51,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:51,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476282575] [2021-10-13 07:38:51,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476282575] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:51,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:51,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:38:51,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692402904] [2021-10-13 07:38:51,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:51,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:51,394 INFO L87 Difference]: Start difference. First operand 433 states and 629 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:51,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:51,426 INFO L93 Difference]: Finished difference Result 850 states and 1237 transitions. [2021-10-13 07:38:51,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:51,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-13 07:38:51,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:51,430 INFO L225 Difference]: With dead ends: 850 [2021-10-13 07:38:51,430 INFO L226 Difference]: Without dead ends: 454 [2021-10-13 07:38:51,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-13 07:38:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2021-10-13 07:38:51,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.4481236203090508) internal successors, (656), 453 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 656 transitions. [2021-10-13 07:38:51,448 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 656 transitions. Word has length 69 [2021-10-13 07:38:51,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:51,449 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 656 transitions. [2021-10-13 07:38:51,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 656 transitions. [2021-10-13 07:38:51,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 07:38:51,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:51,455 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:51,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:51,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:51,668 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:51,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1304795004, now seen corresponding path program 1 times [2021-10-13 07:38:51,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:51,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431545544] [2021-10-13 07:38:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:51,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:51,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:51,670 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:51,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:38:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:51,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:38:51,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 81 proven. 25 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 07:38:52,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 81 proven. 25 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 07:38:52,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:52,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431545544] [2021-10-13 07:38:52,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431545544] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:52,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1655363958] [2021-10-13 07:38:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:52,684 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:38:52,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:38:52,685 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:38:52,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-13 07:38:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:53,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:38:53,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 07:38:53,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 07:38:53,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1655363958] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:53,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:38:53,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:38:53,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864216504] [2021-10-13 07:38:53,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:38:53,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:53,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:38:53,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:38:53,680 INFO L87 Difference]: Start difference. First operand 454 states and 656 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:53,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:53,765 INFO L93 Difference]: Finished difference Result 1130 states and 1647 transitions. [2021-10-13 07:38:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:38:53,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 104 [2021-10-13 07:38:53,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:53,771 INFO L225 Difference]: With dead ends: 1130 [2021-10-13 07:38:53,772 INFO L226 Difference]: Without dead ends: 713 [2021-10-13 07:38:53,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:38:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-13 07:38:53,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-10-13 07:38:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.4508426966292134) internal successors, (1033), 712 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1033 transitions. [2021-10-13 07:38:53,804 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1033 transitions. Word has length 104 [2021-10-13 07:38:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:53,804 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1033 transitions. [2021-10-13 07:38:53,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:53,805 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1033 transitions. [2021-10-13 07:38:53,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-13 07:38:53,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:53,808 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:53,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:54,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:54,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:54,218 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:54,219 INFO L82 PathProgramCache]: Analyzing trace with hash -833396868, now seen corresponding path program 1 times [2021-10-13 07:38:54,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:54,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729640102] [2021-10-13 07:38:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:54,220 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:54,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:54,221 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:54,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:38:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:54,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:38:54,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 120 proven. 25 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-13 07:38:54,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 120 proven. 25 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-13 07:38:55,387 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:55,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729640102] [2021-10-13 07:38:55,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729640102] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:55,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1175638905] [2021-10-13 07:38:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:55,388 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:38:55,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:38:55,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:38:55,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-13 07:38:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:55,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:38:55,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 07:38:56,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 07:38:56,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1175638905] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:56,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:38:56,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:38:56,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82845682] [2021-10-13 07:38:56,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:38:56,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:38:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:38:56,433 INFO L87 Difference]: Start difference. First operand 713 states and 1033 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:56,652 INFO L93 Difference]: Finished difference Result 1601 states and 2374 transitions. [2021-10-13 07:38:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:38:56,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 124 [2021-10-13 07:38:56,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:56,660 INFO L225 Difference]: With dead ends: 1601 [2021-10-13 07:38:56,660 INFO L226 Difference]: Without dead ends: 925 [2021-10-13 07:38:56,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.9ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:38:56,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-10-13 07:38:56,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 890. [2021-10-13 07:38:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 1.4510686164229472) internal successors, (1290), 889 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1290 transitions. [2021-10-13 07:38:56,709 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1290 transitions. Word has length 124 [2021-10-13 07:38:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:56,710 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 1290 transitions. [2021-10-13 07:38:56,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1290 transitions. [2021-10-13 07:38:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-13 07:38:56,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:56,713 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:56,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:56,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:57,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:57,124 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:38:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:57,125 INFO L82 PathProgramCache]: Analyzing trace with hash 865265025, now seen corresponding path program 1 times [2021-10-13 07:38:57,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:57,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966141276] [2021-10-13 07:38:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:57,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:57,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:57,126 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:57,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:38:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:57,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:38:57,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 160 proven. 25 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-10-13 07:38:57,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 160 proven. 25 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-10-13 07:38:58,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:58,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966141276] [2021-10-13 07:38:58,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966141276] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:58,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [584459443] [2021-10-13 07:38:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:58,406 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:38:58,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:38:58,410 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:38:58,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-13 07:38:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:59,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:38:59,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:59,418 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-13 07:38:59,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-13 07:38:59,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [584459443] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:59,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:38:59,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:38:59,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856596778] [2021-10-13 07:38:59,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:38:59,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:59,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:38:59,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:38:59,721 INFO L87 Difference]: Start difference. First operand 890 states and 1290 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:59,959 INFO L93 Difference]: Finished difference Result 1882 states and 2764 transitions. [2021-10-13 07:38:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:38:59,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-10-13 07:38:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:59,966 INFO L225 Difference]: With dead ends: 1882 [2021-10-13 07:38:59,968 INFO L226 Difference]: Without dead ends: 1029 [2021-10-13 07:38:59,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.2ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:38:59,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-10-13 07:38:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 995. [2021-10-13 07:39:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.4235412474849094) internal successors, (1415), 994 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1415 transitions. [2021-10-13 07:39:00,006 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1415 transitions. Word has length 146 [2021-10-13 07:39:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:00,007 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1415 transitions. [2021-10-13 07:39:00,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1415 transitions. [2021-10-13 07:39:00,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-10-13 07:39:00,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:00,013 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:00,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:00,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:00,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:00,417 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash -918464004, now seen corresponding path program 1 times [2021-10-13 07:39:00,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:00,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339111102] [2021-10-13 07:39:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:00,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:00,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:00,419 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:00,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:39:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:01,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:39:01,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 235 proven. 25 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-10-13 07:39:01,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 235 proven. 25 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-10-13 07:39:02,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:02,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339111102] [2021-10-13 07:39:02,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339111102] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:39:02,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [203296846] [2021-10-13 07:39:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:02,095 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:02,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:39:02,095 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:39:02,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-13 07:39:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:02,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:02,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-13 07:39:03,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-13 07:39:03,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [203296846] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:03,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:39:03,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:39:03,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131078905] [2021-10-13 07:39:03,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:03,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:03,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:03,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:03,713 INFO L87 Difference]: Start difference. First operand 995 states and 1415 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:03,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:03,950 INFO L93 Difference]: Finished difference Result 2119 states and 3055 transitions. [2021-10-13 07:39:03,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:03,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 183 [2021-10-13 07:39:03,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:03,958 INFO L225 Difference]: With dead ends: 2119 [2021-10-13 07:39:03,958 INFO L226 Difference]: Without dead ends: 1161 [2021-10-13 07:39:03,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 33.5ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-10-13 07:39:03,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1135. [2021-10-13 07:39:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 1.3888888888888888) internal successors, (1575), 1134 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1575 transitions. [2021-10-13 07:39:03,998 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1575 transitions. Word has length 183 [2021-10-13 07:39:03,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:03,999 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1575 transitions. [2021-10-13 07:39:03,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1575 transitions. [2021-10-13 07:39:04,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-13 07:39:04,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:04,003 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:04,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:04,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:04,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:04,417 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:04,417 INFO L82 PathProgramCache]: Analyzing trace with hash 301652121, now seen corresponding path program 1 times [2021-10-13 07:39:04,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:04,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253758038] [2021-10-13 07:39:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:04,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:04,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:04,420 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:04,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:39:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:05,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:39:05,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 237 proven. 25 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-10-13 07:39:05,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 237 proven. 25 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-10-13 07:39:06,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:06,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253758038] [2021-10-13 07:39:06,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253758038] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:39:06,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [551851863] [2021-10-13 07:39:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:06,198 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:06,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:39:06,200 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:39:06,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-13 07:39:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:07,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:07,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-13 07:39:07,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-13 07:39:08,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [551851863] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:08,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:39:08,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:39:08,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560351475] [2021-10-13 07:39:08,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:08,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:08,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:08,200 INFO L87 Difference]: Start difference. First operand 1135 states and 1575 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:08,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:08,444 INFO L93 Difference]: Finished difference Result 2419 states and 3415 transitions. [2021-10-13 07:39:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:08,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-10-13 07:39:08,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:08,453 INFO L225 Difference]: With dead ends: 2419 [2021-10-13 07:39:08,453 INFO L226 Difference]: Without dead ends: 1321 [2021-10-13 07:39:08,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2021-10-13 07:39:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1290. [2021-10-13 07:39:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 1.3576415826221877) internal successors, (1750), 1289 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1750 transitions. [2021-10-13 07:39:08,496 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1750 transitions. Word has length 184 [2021-10-13 07:39:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:08,497 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 1750 transitions. [2021-10-13 07:39:08,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:08,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1750 transitions. [2021-10-13 07:39:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-13 07:39:08,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:08,502 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:08,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:08,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-10-13 07:39:08,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:08,916 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:08,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:08,916 INFO L82 PathProgramCache]: Analyzing trace with hash -390571940, now seen corresponding path program 1 times [2021-10-13 07:39:08,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:08,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674211898] [2021-10-13 07:39:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:08,917 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:08,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:08,918 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:08,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:39:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:09,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:39:09,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 299 proven. 25 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-10-13 07:39:10,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 299 proven. 25 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-10-13 07:39:10,908 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:10,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674211898] [2021-10-13 07:39:10,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674211898] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:39:10,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1025632383] [2021-10-13 07:39:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:10,909 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:10,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:39:10,910 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:39:10,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-13 07:39:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:12,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:12,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-10-13 07:39:12,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-10-13 07:39:13,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1025632383] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:13,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:39:13,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:39:13,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060579099] [2021-10-13 07:39:13,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:13,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:13,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:13,123 INFO L87 Difference]: Start difference. First operand 1290 states and 1750 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:13,218 INFO L93 Difference]: Finished difference Result 4899 states and 6678 transitions. [2021-10-13 07:39:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:13,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2021-10-13 07:39:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:13,240 INFO L225 Difference]: With dead ends: 4899 [2021-10-13 07:39:13,240 INFO L226 Difference]: Without dead ends: 3646 [2021-10-13 07:39:13,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 890 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2021-10-13 07:39:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3642. [2021-10-13 07:39:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 1.3622631145289756) internal successors, (4960), 3641 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 4960 transitions. [2021-10-13 07:39:13,400 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 4960 transitions. Word has length 225 [2021-10-13 07:39:13,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:13,401 INFO L470 AbstractCegarLoop]: Abstraction has 3642 states and 4960 transitions. [2021-10-13 07:39:13,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 4960 transitions. [2021-10-13 07:39:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-13 07:39:13,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:13,409 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:13,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:13,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-10-13 07:39:13,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:13,815 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:13,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1606725666, now seen corresponding path program 1 times [2021-10-13 07:39:13,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:13,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793330472] [2021-10-13 07:39:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:13,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:13,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:13,818 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:13,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:39:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:14,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:39:14,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 299 proven. 25 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-10-13 07:39:15,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 299 proven. 25 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-10-13 07:39:15,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:15,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793330472] [2021-10-13 07:39:15,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793330472] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:39:15,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1787090741] [2021-10-13 07:39:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:15,957 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:15,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:39:15,958 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:39:15,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-13 07:39:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:17,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:17,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-10-13 07:39:18,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-10-13 07:39:18,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1787090741] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:18,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:39:18,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:39:18,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404407247] [2021-10-13 07:39:18,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:18,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:18,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:18,684 INFO L87 Difference]: Start difference. First operand 3642 states and 4960 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:19,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:19,018 INFO L93 Difference]: Finished difference Result 7817 states and 10846 transitions. [2021-10-13 07:39:19,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:19,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 225 [2021-10-13 07:39:19,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:19,051 INFO L225 Difference]: With dead ends: 7817 [2021-10-13 07:39:19,051 INFO L226 Difference]: Without dead ends: 4212 [2021-10-13 07:39:19,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 890 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:19,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2021-10-13 07:39:19,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 4182. [2021-10-13 07:39:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 4181 states have (on average 1.3298254006218608) internal successors, (5560), 4181 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 5560 transitions. [2021-10-13 07:39:19,219 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 5560 transitions. Word has length 225 [2021-10-13 07:39:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:19,220 INFO L470 AbstractCegarLoop]: Abstraction has 4182 states and 5560 transitions. [2021-10-13 07:39:19,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 5560 transitions. [2021-10-13 07:39:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-10-13 07:39:19,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:19,230 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 11, 11, 11, 11, 9, 9, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:19,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:19,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:19,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:19,647 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:19,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:19,647 INFO L82 PathProgramCache]: Analyzing trace with hash -573362712, now seen corresponding path program 1 times [2021-10-13 07:39:19,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:19,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143234701] [2021-10-13 07:39:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:19,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:19,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:19,650 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:19,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 07:39:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:20,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:39:20,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 340 proven. 25 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2021-10-13 07:39:21,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 340 proven. 25 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2021-10-13 07:39:22,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:22,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143234701] [2021-10-13 07:39:22,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143234701] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:39:22,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [508366500] [2021-10-13 07:39:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:22,221 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:22,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:39:22,222 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:39:22,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-10-13 07:39:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:24,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:24,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-10-13 07:39:24,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-10-13 07:39:25,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [508366500] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:25,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:39:25,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:39:25,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640136923] [2021-10-13 07:39:25,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:25,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:25,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:25,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:25,066 INFO L87 Difference]: Start difference. First operand 4182 states and 5560 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:25,374 INFO L93 Difference]: Finished difference Result 8642 states and 11536 transitions. [2021-10-13 07:39:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:25,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 249 [2021-10-13 07:39:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:25,399 INFO L225 Difference]: With dead ends: 8642 [2021-10-13 07:39:25,400 INFO L226 Difference]: Without dead ends: 4497 [2021-10-13 07:39:25,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 986 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:25,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4497 states. [2021-10-13 07:39:25,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4497 to 4347. [2021-10-13 07:39:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 4346 states have (on average 1.3196042337781868) internal successors, (5735), 4346 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5735 transitions. [2021-10-13 07:39:25,591 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5735 transitions. Word has length 249 [2021-10-13 07:39:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:25,592 INFO L470 AbstractCegarLoop]: Abstraction has 4347 states and 5735 transitions. [2021-10-13 07:39:25,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5735 transitions. [2021-10-13 07:39:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-10-13 07:39:25,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:25,605 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 11, 11, 11, 9, 9, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:25,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:25,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-10-13 07:39:26,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:26,022 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:26,023 INFO L82 PathProgramCache]: Analyzing trace with hash 808491776, now seen corresponding path program 1 times [2021-10-13 07:39:26,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:26,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791667040] [2021-10-13 07:39:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:26,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:26,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:26,025 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:26,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:39:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:27,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:39:27,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 343 proven. 25 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-10-13 07:39:27,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 343 proven. 25 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-10-13 07:39:28,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:28,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791667040] [2021-10-13 07:39:28,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791667040] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:39:28,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1499757167] [2021-10-13 07:39:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:28,698 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:28,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:39:28,702 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:39:28,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-10-13 07:39:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:30,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:30,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2021-10-13 07:39:31,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2021-10-13 07:39:32,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1499757167] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:32,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:39:32,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:39:32,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455966259] [2021-10-13 07:39:32,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:32,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:32,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:32,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:32,107 INFO L87 Difference]: Start difference. First operand 4347 states and 5735 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:32,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:32,438 INFO L93 Difference]: Finished difference Result 9362 states and 12561 transitions. [2021-10-13 07:39:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:32,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 261 [2021-10-13 07:39:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:32,463 INFO L225 Difference]: With dead ends: 9362 [2021-10-13 07:39:32,464 INFO L226 Difference]: Without dead ends: 5052 [2021-10-13 07:39:32,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 1034 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:39:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5052 states. [2021-10-13 07:39:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5052 to 4902. [2021-10-13 07:39:32,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4901 states have (on average 1.295653948173842) internal successors, (6350), 4901 states have internal predecessors, (6350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 6350 transitions. [2021-10-13 07:39:32,663 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 6350 transitions. Word has length 261 [2021-10-13 07:39:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:32,664 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 6350 transitions. [2021-10-13 07:39:32,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 6350 transitions. [2021-10-13 07:39:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-13 07:39:32,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:32,677 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:32,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:32,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-13 07:39:33,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:33,085 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:33,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:33,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1178275335, now seen corresponding path program 1 times [2021-10-13 07:39:33,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:33,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287862579] [2021-10-13 07:39:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:33,086 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:33,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:33,087 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:33,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 07:39:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:34,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:39:34,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 385 proven. 25 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-10-13 07:39:35,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 385 proven. 25 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-10-13 07:39:36,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:36,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287862579] [2021-10-13 07:39:36,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287862579] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:39:36,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [299240160] [2021-10-13 07:39:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:36,009 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:36,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:39:36,010 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:39:36,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-10-13 07:39:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:38,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:38,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-10-13 07:39:39,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-10-13 07:39:39,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [299240160] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:39,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:39:39,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 7 [2021-10-13 07:39:39,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627465028] [2021-10-13 07:39:39,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:39,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:39:39,708 INFO L87 Difference]: Start difference. First operand 4902 states and 6350 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:39,884 INFO L93 Difference]: Finished difference Result 14616 states and 18928 transitions. [2021-10-13 07:39:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:39,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 298 [2021-10-13 07:39:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:39,932 INFO L225 Difference]: With dead ends: 14616 [2021-10-13 07:39:39,932 INFO L226 Difference]: Without dead ends: 9751 [2021-10-13 07:39:39,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:39:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9751 states. [2021-10-13 07:39:40,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9751 to 9749. [2021-10-13 07:39:40,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9749 states, 9748 states have (on average 1.2909314731226917) internal successors, (12584), 9748 states have internal predecessors, (12584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9749 states to 9749 states and 12584 transitions. [2021-10-13 07:39:40,272 INFO L78 Accepts]: Start accepts. Automaton has 9749 states and 12584 transitions. Word has length 298 [2021-10-13 07:39:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:40,273 INFO L470 AbstractCegarLoop]: Abstraction has 9749 states and 12584 transitions. [2021-10-13 07:39:40,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:40,274 INFO L276 IsEmpty]: Start isEmpty. Operand 9749 states and 12584 transitions. [2021-10-13 07:39:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-13 07:39:40,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:40,291 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:40,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:40,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2021-10-13 07:39:40,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:40,711 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:40,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:40,711 INFO L82 PathProgramCache]: Analyzing trace with hash -627162999, now seen corresponding path program 1 times [2021-10-13 07:39:40,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:40,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070308235] [2021-10-13 07:39:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:40,712 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:40,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:40,713 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:40,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 07:39:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:42,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:39:42,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 385 proven. 25 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-10-13 07:39:43,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 385 proven. 25 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-10-13 07:39:44,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:44,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070308235] [2021-10-13 07:39:44,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070308235] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:39:44,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [881139194] [2021-10-13 07:39:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:44,039 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:44,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:39:44,055 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:39:44,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-10-13 07:39:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:46,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:46,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-10-13 07:39:47,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-10-13 07:39:48,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [881139194] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:48,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:39:48,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 7 [2021-10-13 07:39:48,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761614928] [2021-10-13 07:39:48,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:39:48,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:39:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:39:48,435 INFO L87 Difference]: Start difference. First operand 9749 states and 12584 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:48,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:48,663 INFO L93 Difference]: Finished difference Result 14586 states and 18799 transitions. [2021-10-13 07:39:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:39:48,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 298 [2021-10-13 07:39:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:48,686 INFO L225 Difference]: With dead ends: 14586 [2021-10-13 07:39:48,686 INFO L226 Difference]: Without dead ends: 9751 [2021-10-13 07:39:48,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:39:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9751 states. [2021-10-13 07:39:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9751 to 9749. [2021-10-13 07:39:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9749 states, 9748 states have (on average 1.2866228970045137) internal successors, (12542), 9748 states have internal predecessors, (12542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9749 states to 9749 states and 12542 transitions. [2021-10-13 07:39:49,035 INFO L78 Accepts]: Start accepts. Automaton has 9749 states and 12542 transitions. Word has length 298 [2021-10-13 07:39:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:49,036 INFO L470 AbstractCegarLoop]: Abstraction has 9749 states and 12542 transitions. [2021-10-13 07:39:49,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 9749 states and 12542 transitions. [2021-10-13 07:39:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-13 07:39:49,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:49,054 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:49,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:49,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:49,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:49,464 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:49,464 INFO L82 PathProgramCache]: Analyzing trace with hash 425310349, now seen corresponding path program 1 times [2021-10-13 07:39:49,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:49,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524044692] [2021-10-13 07:39:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:49,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:49,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:49,467 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:49,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 07:39:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:51,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:39:51,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-10-13 07:39:52,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-10-13 07:39:52,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:52,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524044692] [2021-10-13 07:39:52,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524044692] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:39:52,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:52,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:39:52,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77582554] [2021-10-13 07:39:52,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:39:52,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:39:52,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:39:52,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:39:52,850 INFO L87 Difference]: Start difference. First operand 9749 states and 12542 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:53,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:53,257 INFO L93 Difference]: Finished difference Result 20917 states and 27414 transitions. [2021-10-13 07:39:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:39:53,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 298 [2021-10-13 07:39:53,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:53,277 INFO L225 Difference]: With dead ends: 20917 [2021-10-13 07:39:53,277 INFO L226 Difference]: Without dead ends: 11234 [2021-10-13 07:39:53,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:39:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11234 states. [2021-10-13 07:39:53,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11234 to 10964. [2021-10-13 07:39:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10964 states, 10963 states have (on average 1.2658031560704186) internal successors, (13877), 10963 states have internal predecessors, (13877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:53,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10964 states to 10964 states and 13877 transitions. [2021-10-13 07:39:53,564 INFO L78 Accepts]: Start accepts. Automaton has 10964 states and 13877 transitions. Word has length 298 [2021-10-13 07:39:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:53,590 INFO L470 AbstractCegarLoop]: Abstraction has 10964 states and 13877 transitions. [2021-10-13 07:39:53,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:53,590 INFO L276 IsEmpty]: Start isEmpty. Operand 10964 states and 13877 transitions. [2021-10-13 07:39:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-10-13 07:39:53,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:53,605 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:53,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:53,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:39:53,822 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:39:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:53,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2116106570, now seen corresponding path program 1 times [2021-10-13 07:39:53,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:53,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952415164] [2021-10-13 07:39:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:53,824 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:53,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:53,824 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:53,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 07:39:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:56,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:39:56,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 388 proven. 25 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2021-10-13 07:39:56,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 388 proven. 25 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2021-10-13 07:39:57,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:57,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952415164] [2021-10-13 07:39:57,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952415164] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:39:57,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2059585752] [2021-10-13 07:39:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:57,467 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:57,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:39:57,470 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:39:57,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-10-13 07:40:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:00,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:40:00,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-10-13 07:40:01,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-10-13 07:40:01,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2059585752] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:01,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:40:01,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 8 [2021-10-13 07:40:01,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158452491] [2021-10-13 07:40:01,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:40:01,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:40:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:40:01,985 INFO L87 Difference]: Start difference. First operand 10964 states and 13877 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:02,328 INFO L93 Difference]: Finished difference Result 23332 states and 30039 transitions. [2021-10-13 07:40:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:40:02,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 300 [2021-10-13 07:40:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:02,388 INFO L225 Difference]: With dead ends: 23332 [2021-10-13 07:40:02,388 INFO L226 Difference]: Without dead ends: 11129 [2021-10-13 07:40:02,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1190 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:40:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11129 states. [2021-10-13 07:40:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11129 to 10859. [2021-10-13 07:40:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10859 states, 10858 states have (on average 1.2614662000368393) internal successors, (13697), 10858 states have internal predecessors, (13697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10859 states to 10859 states and 13697 transitions. [2021-10-13 07:40:02,686 INFO L78 Accepts]: Start accepts. Automaton has 10859 states and 13697 transitions. Word has length 300 [2021-10-13 07:40:02,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:02,687 INFO L470 AbstractCegarLoop]: Abstraction has 10859 states and 13697 transitions. [2021-10-13 07:40:02,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 10859 states and 13697 transitions. [2021-10-13 07:40:02,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-10-13 07:40:02,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:02,701 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:02,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:02,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2021-10-13 07:40:03,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:03,114 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:03,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:03,115 INFO L82 PathProgramCache]: Analyzing trace with hash -828156331, now seen corresponding path program 1 times [2021-10-13 07:40:03,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:03,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623180529] [2021-10-13 07:40:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:03,116 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:03,116 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:03,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 07:40:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:05,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:05,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:40:06,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:40:06,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:06,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623180529] [2021-10-13 07:40:06,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623180529] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:06,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1954337937] [2021-10-13 07:40:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:06,705 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:06,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:40:06,706 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:40:06,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-10-13 07:40:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:10,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:10,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:40:10,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:40:11,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1954337937] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:11,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447433580] [2021-10-13 07:40:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:11,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:11,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:11,497 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:11,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 07:40:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:14,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:14,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:40:15,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 472 proven. 12 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:40:16,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447433580] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:16,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:40:16,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:40:16,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556213508] [2021-10-13 07:40:16,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:40:16,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:40:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:40:16,104 INFO L87 Difference]: Start difference. First operand 10859 states and 13697 transitions. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:16,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:16,874 INFO L93 Difference]: Finished difference Result 20465 states and 25867 transitions. [2021-10-13 07:40:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:40:16,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 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 308 [2021-10-13 07:40:16,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:16,886 INFO L225 Difference]: With dead ends: 20465 [2021-10-13 07:40:16,886 INFO L226 Difference]: Without dead ends: 7347 [2021-10-13 07:40:16,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1849 GetRequests, 1841 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:40:16,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2021-10-13 07:40:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 5945. [2021-10-13 07:40:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5945 states, 5944 states have (on average 1.2851615074024225) internal successors, (7639), 5944 states have internal predecessors, (7639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 7639 transitions. [2021-10-13 07:40:17,070 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 7639 transitions. Word has length 308 [2021-10-13 07:40:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:17,071 INFO L470 AbstractCegarLoop]: Abstraction has 5945 states and 7639 transitions. [2021-10-13 07:40:17,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 7639 transitions. [2021-10-13 07:40:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-10-13 07:40:17,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:17,079 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:17,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:17,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:17,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:17,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:17,699 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:17,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:17,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1448829880, now seen corresponding path program 1 times [2021-10-13 07:40:17,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:17,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045334905] [2021-10-13 07:40:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:17,700 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:17,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:17,702 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:17,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-13 07:40:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:20,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:20,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 355 proven. 25 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2021-10-13 07:40:21,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 355 proven. 25 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2021-10-13 07:40:21,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:21,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045334905] [2021-10-13 07:40:21,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045334905] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:21,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [170942312] [2021-10-13 07:40:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:21,963 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:21,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:40:21,966 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:40:21,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-10-13 07:40:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:26,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:26,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 480 proven. 13 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:40:26,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 480 proven. 13 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:40:27,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [170942312] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:27,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858234546] [2021-10-13 07:40:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:27,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:27,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:27,392 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:27,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 07:40:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:31,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:40:31,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 480 proven. 13 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:40:32,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 480 proven. 13 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-10-13 07:40:32,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858234546] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:32,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:40:32,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 10 [2021-10-13 07:40:32,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262153776] [2021-10-13 07:40:32,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:40:32,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:40:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:40:32,560 INFO L87 Difference]: Start difference. First operand 5945 states and 7639 transitions. Second operand has 10 states, 10 states have (on average 36.9) internal successors, (369), 10 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:33,097 INFO L93 Difference]: Finished difference Result 6160 states and 7942 transitions. [2021-10-13 07:40:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:40:33,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 36.9) internal successors, (369), 10 states have internal predecessors, (369), 0 states have call successors, (0), 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 310 [2021-10-13 07:40:33,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:33,098 INFO L225 Difference]: With dead ends: 6160 [2021-10-13 07:40:33,098 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:40:33,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1864 GetRequests, 1851 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 98.9ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:40:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:40:33,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:40:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:40:33,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 310 [2021-10-13 07:40:33,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:33,101 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:40:33,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.9) internal successors, (369), 10 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:40:33,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:40:33,107 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:40:33,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-13 07:40:33,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:33,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2021-10-13 07:40:33,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:33,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:40:33,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:33,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:33,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:33,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:34,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:37,567 INFO L857 garLoopResultBuilder]: For program point L465(lines 465 471) no Hoare annotation was computed. [2021-10-13 07:40:37,568 INFO L860 garLoopResultBuilder]: At program point L201(lines 200 541) the Hoare annotation is: true [2021-10-13 07:40:37,568 INFO L853 garLoopResultBuilder]: At program point L135(lines 131 564) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (.cse9 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse8 .cse9) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9))) [2021-10-13 07:40:37,568 INFO L857 garLoopResultBuilder]: For program point L102(line 102) no Hoare annotation was computed. [2021-10-13 07:40:37,568 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 240) no Hoare annotation was computed. [2021-10-13 07:40:37,568 INFO L860 garLoopResultBuilder]: At program point L632(lines 624 634) the Hoare annotation is: true [2021-10-13 07:40:37,568 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 306) no Hoare annotation was computed. [2021-10-13 07:40:37,568 INFO L857 garLoopResultBuilder]: For program point L302-2(lines 302 306) no Hoare annotation was computed. [2021-10-13 07:40:37,568 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 551) no Hoare annotation was computed. [2021-10-13 07:40:37,569 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 562) no Hoare annotation was computed. [2021-10-13 07:40:37,569 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 573) no Hoare annotation was computed. [2021-10-13 07:40:37,569 INFO L857 garLoopResultBuilder]: For program point L435(lines 435 439) no Hoare annotation was computed. [2021-10-13 07:40:37,569 INFO L857 garLoopResultBuilder]: For program point L435-2(lines 205 537) no Hoare annotation was computed. [2021-10-13 07:40:37,569 INFO L860 garLoopResultBuilder]: At program point L204(lines 203 540) the Hoare annotation is: true [2021-10-13 07:40:37,569 INFO L853 garLoopResultBuilder]: At program point L171(lines 167 552) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:40:37,569 INFO L853 garLoopResultBuilder]: At program point L105(lines 104 573) the Hoare annotation is: (let ((.cse2 (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)))) (or (and .cse0 .cse1 (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (and .cse2 .cse0 (= (_ bv208 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1) (and .cse2 .cse0 .cse1))) [2021-10-13 07:40:37,570 INFO L857 garLoopResultBuilder]: For program point L370(lines 370 374) no Hoare annotation was computed. [2021-10-13 07:40:37,570 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 409) no Hoare annotation was computed. [2021-10-13 07:40:37,570 INFO L857 garLoopResultBuilder]: For program point L404-2(lines 404 409) no Hoare annotation was computed. [2021-10-13 07:40:37,570 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 550) no Hoare annotation was computed. [2021-10-13 07:40:37,570 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 561) no Hoare annotation was computed. [2021-10-13 07:40:37,570 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 572) no Hoare annotation was computed. [2021-10-13 07:40:37,571 INFO L853 garLoopResultBuilder]: At program point L141(lines 137 562) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (.cse9 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse8 .cse9) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9))) [2021-10-13 07:40:37,571 INFO L853 garLoopResultBuilder]: At program point L538(lines 101 604) the Hoare annotation is: (let ((.cse8 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4528 32))) (.cse9 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (.cse10 (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse3 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32))) (.cse6 (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse7 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (.cse4 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse5 (= (_ bv208 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse11 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4512 32))) (.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 (exists ((v_ULTIMATE.start_ssl3_connect_~s__state~0_364 (_ BitVec 32))) (= ULTIMATE.start_ssl3_connect_~s__state~0 (bvor v_ULTIMATE.start_ssl3_connect_~s__state~0_364 (_ bv208 32))))) (and .cse0 .cse6 .cse7) (and .cse0 (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse1) (and .cse4 .cse0) (and .cse0 .cse1 (= (_ bv4480 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse4 .cse5 .cse8) (and .cse9 .cse10 .cse5) (and .cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4448 32)) .cse1) (and .cse0 .cse8 .cse1) (and (= (_ bv4464 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse0 .cse1) (and .cse9 .cse10 .cse0) (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) .cse4 .cse5 .cse3) (and .cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4560 32))) (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv3 32)) (and .cse0 .cse1 .cse11) (and .cse5 .cse6 .cse7) (and .cse4 .cse5 .cse11) (and (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4496 32)) .cse0 .cse1))) [2021-10-13 07:40:37,571 INFO L857 garLoopResultBuilder]: For program point L76(lines 76 84) no Hoare annotation was computed. [2021-10-13 07:40:37,571 INFO L860 garLoopResultBuilder]: At program point L605(lines 100 606) the Hoare annotation is: true [2021-10-13 07:40:37,572 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 549) no Hoare annotation was computed. [2021-10-13 07:40:37,572 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 560) no Hoare annotation was computed. [2021-10-13 07:40:37,572 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 571) no Hoare annotation was computed. [2021-10-13 07:40:37,572 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 379) no Hoare annotation was computed. [2021-10-13 07:40:37,572 INFO L857 garLoopResultBuilder]: For program point L375-2(lines 375 379) no Hoare annotation was computed. [2021-10-13 07:40:37,572 INFO L853 garLoopResultBuilder]: At program point L210(lines 107 572) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse6 (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse9 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse5) (and .cse0 .cse6 (= (_ bv208 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) .cse7 .cse2 .cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse4 .cse8 .cse9 .cse5) (and .cse0 .cse6 .cse1 .cse7 .cse2 .cse3 .cse4 .cse8 .cse9 .cse5))) [2021-10-13 07:40:37,573 INFO L853 garLoopResultBuilder]: At program point L177(lines 173 550) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:40:37,573 INFO L857 garLoopResultBuilder]: For program point L574(lines 574 602) no Hoare annotation was computed. [2021-10-13 07:40:37,573 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 83) no Hoare annotation was computed. [2021-10-13 07:40:37,573 INFO L857 garLoopResultBuilder]: For program point L79-2(lines 76 84) no Hoare annotation was computed. [2021-10-13 07:40:37,573 INFO L857 garLoopResultBuilder]: For program point L575(lines 575 599) no Hoare annotation was computed. [2021-10-13 07:40:37,573 INFO L857 garLoopResultBuilder]: For program point L509-1(lines 205 537) no Hoare annotation was computed. [2021-10-13 07:40:37,574 INFO L857 garLoopResultBuilder]: For program point L344(lines 344 349) no Hoare annotation was computed. [2021-10-13 07:40:37,574 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 282) no Hoare annotation was computed. [2021-10-13 07:40:37,574 INFO L857 garLoopResultBuilder]: For program point L311-1(lines 311 325) no Hoare annotation was computed. [2021-10-13 07:40:37,574 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 548) no Hoare annotation was computed. [2021-10-13 07:40:37,574 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 559) no Hoare annotation was computed. [2021-10-13 07:40:37,574 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 570) no Hoare annotation was computed. [2021-10-13 07:40:37,575 INFO L857 garLoopResultBuilder]: For program point L609(lines 609 613) no Hoare annotation was computed. [2021-10-13 07:40:37,575 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 585) no Hoare annotation was computed. [2021-10-13 07:40:37,575 INFO L857 garLoopResultBuilder]: For program point L609-2(lines 609 613) no Hoare annotation was computed. [2021-10-13 07:40:37,575 INFO L857 garLoopResultBuilder]: For program point L576-2(lines 575 597) no Hoare annotation was computed. [2021-10-13 07:40:37,575 INFO L853 garLoopResultBuilder]: At program point L147(lines 143 560) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:40:37,575 INFO L857 garLoopResultBuilder]: For program point L578(lines 578 582) no Hoare annotation was computed. [2021-10-13 07:40:37,576 INFO L857 garLoopResultBuilder]: For program point L446(lines 446 451) no Hoare annotation was computed. [2021-10-13 07:40:37,576 INFO L857 garLoopResultBuilder]: For program point L215(lines 215 219) no Hoare annotation was computed. [2021-10-13 07:40:37,576 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 547) no Hoare annotation was computed. [2021-10-13 07:40:37,576 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 558) no Hoare annotation was computed. [2021-10-13 07:40:37,576 INFO L857 garLoopResultBuilder]: For program point L215-2(lines 205 537) no Hoare annotation was computed. [2021-10-13 07:40:37,576 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 569) no Hoare annotation was computed. [2021-10-13 07:40:37,576 INFO L857 garLoopResultBuilder]: For program point L480(lines 480 484) no Hoare annotation was computed. [2021-10-13 07:40:37,577 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 319) no Hoare annotation was computed. [2021-10-13 07:40:37,577 INFO L857 garLoopResultBuilder]: For program point L315-2(lines 313 325) no Hoare annotation was computed. [2021-10-13 07:40:37,577 INFO L853 garLoopResultBuilder]: At program point L183(lines 179 548) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv208 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse5 .cse6 .cse7 .cse8) (and .cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse1 .cse2 .cse3 .cse4 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse5 .cse6 .cse7 .cse8))) [2021-10-13 07:40:37,577 INFO L857 garLoopResultBuilder]: For program point L514-1(lines 514 518) no Hoare annotation was computed. [2021-10-13 07:40:37,577 INFO L857 garLoopResultBuilder]: For program point L415(lines 415 419) no Hoare annotation was computed. [2021-10-13 07:40:37,578 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:40:37,578 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 256) no Hoare annotation was computed. [2021-10-13 07:40:37,578 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 546) no Hoare annotation was computed. [2021-10-13 07:40:37,578 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 557) no Hoare annotation was computed. [2021-10-13 07:40:37,578 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 568) no Hoare annotation was computed. [2021-10-13 07:40:37,578 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 94) no Hoare annotation was computed. [2021-10-13 07:40:37,578 INFO L857 garLoopResultBuilder]: For program point L86-1(lines 68 622) no Hoare annotation was computed. [2021-10-13 07:40:37,579 INFO L853 garLoopResultBuilder]: At program point L153(lines 149 558) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:40:37,579 INFO L857 garLoopResultBuilder]: For program point L87(lines 87 91) no Hoare annotation was computed. [2021-10-13 07:40:37,579 INFO L857 garLoopResultBuilder]: For program point L485(lines 485 489) no Hoare annotation was computed. [2021-10-13 07:40:37,579 INFO L857 garLoopResultBuilder]: For program point L485-2(lines 485 489) no Hoare annotation was computed. [2021-10-13 07:40:37,579 INFO L857 garLoopResultBuilder]: For program point L287(lines 287 295) no Hoare annotation was computed. [2021-10-13 07:40:37,580 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 545) no Hoare annotation was computed. [2021-10-13 07:40:37,580 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 556) no Hoare annotation was computed. [2021-10-13 07:40:37,580 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 567) no Hoare annotation was computed. [2021-10-13 07:40:37,580 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 391) no Hoare annotation was computed. [2021-10-13 07:40:37,580 INFO L857 garLoopResultBuilder]: For program point L354(lines 354 358) no Hoare annotation was computed. [2021-10-13 07:40:37,580 INFO L853 garLoopResultBuilder]: At program point L189(lines 185 546) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv208 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse5 .cse6 .cse7 .cse8) (and .cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse1 .cse2 .cse3 .cse4 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse5 .cse6 .cse7 .cse8))) [2021-10-13 07:40:37,581 INFO L853 garLoopResultBuilder]: At program point L123(lines 119 568) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse0 (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (.cse9 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse8 .cse9) (and (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 .cse9) (and .cse0 (= (_ bv208 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) .cse2 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse6 .cse7 .cse8 .cse9))) [2021-10-13 07:40:37,581 INFO L853 garLoopResultBuilder]: At program point L355(lines 68 622) the Hoare annotation is: false [2021-10-13 07:40:37,581 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:40:37,581 INFO L860 garLoopResultBuilder]: At program point L620(lines 68 622) the Hoare annotation is: true [2021-10-13 07:40:37,581 INFO L857 garLoopResultBuilder]: For program point L587(lines 587 593) no Hoare annotation was computed. [2021-10-13 07:40:37,581 INFO L857 garLoopResultBuilder]: For program point L521(lines 521 525) no Hoare annotation was computed. [2021-10-13 07:40:37,582 INFO L857 garLoopResultBuilder]: For program point L521-2(lines 521 525) no Hoare annotation was computed. [2021-10-13 07:40:37,582 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 294) no Hoare annotation was computed. [2021-10-13 07:40:37,582 INFO L857 garLoopResultBuilder]: For program point L290-2(lines 205 537) no Hoare annotation was computed. [2021-10-13 07:40:37,582 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 544) no Hoare annotation was computed. [2021-10-13 07:40:37,582 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 555) no Hoare annotation was computed. [2021-10-13 07:40:37,582 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 566) no Hoare annotation was computed. [2021-10-13 07:40:37,583 INFO L860 garLoopResultBuilder]: At program point L621(lines 10 623) the Hoare annotation is: true [2021-10-13 07:40:37,583 INFO L857 garLoopResultBuilder]: For program point L456(lines 456 460) no Hoare annotation was computed. [2021-10-13 07:40:37,583 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:40:37,583 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 363) no Hoare annotation was computed. [2021-10-13 07:40:37,583 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 244) no Hoare annotation was computed. [2021-10-13 07:40:37,583 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 543) no Hoare annotation was computed. [2021-10-13 07:40:37,584 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 554) no Hoare annotation was computed. [2021-10-13 07:40:37,584 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 205 537) no Hoare annotation was computed. [2021-10-13 07:40:37,584 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 565) no Hoare annotation was computed. [2021-10-13 07:40:37,584 INFO L853 garLoopResultBuilder]: At program point L195(lines 191 544) the Hoare annotation is: (or (and (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= (_ bv208 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (exists ((v_ULTIMATE.start_ssl3_connect_~s__state~0_364 (_ BitVec 32))) (= ULTIMATE.start_ssl3_connect_~s__state~0 (bvor v_ULTIMATE.start_ssl3_connect_~s__state~0_364 (_ bv208 32))))) (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))))) [2021-10-13 07:40:37,584 INFO L853 garLoopResultBuilder]: At program point L129(lines 125 566) the Hoare annotation is: (let ((.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse6 (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse9 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 (= (_ bv208 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse9 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse9 .cse1 .cse2 .cse3 .cse5 .cse7 (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse8) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse9 .cse1 .cse2 .cse3 .cse5 .cse7 .cse8))) [2021-10-13 07:40:37,584 INFO L857 garLoopResultBuilder]: For program point L493-1(lines 493 505) no Hoare annotation was computed. [2021-10-13 07:40:37,585 INFO L857 garLoopResultBuilder]: For program point L427(lines 427 431) no Hoare annotation was computed. [2021-10-13 07:40:37,585 INFO L857 garLoopResultBuilder]: For program point L229(lines 229 234) no Hoare annotation was computed. [2021-10-13 07:40:37,585 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 542) no Hoare annotation was computed. [2021-10-13 07:40:37,585 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 553) no Hoare annotation was computed. [2021-10-13 07:40:37,585 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 564) no Hoare annotation was computed. [2021-10-13 07:40:37,585 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:40:37,586 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 616) no Hoare annotation was computed. [2021-10-13 07:40:37,586 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 532) no Hoare annotation was computed. [2021-10-13 07:40:37,586 INFO L853 garLoopResultBuilder]: At program point L198(lines 197 542) the Hoare annotation is: (let ((.cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32)))) (or (and .cse0 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) .cse1) (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) .cse2 (= (_ bv208 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) .cse1) (and .cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1) (and .cse2 .cse0 .cse1))) [2021-10-13 07:40:37,586 INFO L853 garLoopResultBuilder]: At program point L165(lines 155 556) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:40:37,586 INFO L857 garLoopResultBuilder]: For program point L496(lines 496 501) no Hoare annotation was computed. [2021-10-13 07:40:37,587 INFO L857 garLoopResultBuilder]: For program point L463(lines 463 474) no Hoare annotation was computed. [2021-10-13 07:40:37,587 INFO L857 garLoopResultBuilder]: For program point L463-1(lines 463 474) no Hoare annotation was computed. [2021-10-13 07:40:37,587 INFO L857 garLoopResultBuilder]: For program point L265(lines 265 269) no Hoare annotation was computed. [2021-10-13 07:40:37,587 INFO L857 garLoopResultBuilder]: For program point L265-2(lines 205 537) no Hoare annotation was computed. [2021-10-13 07:40:37,587 INFO L857 garLoopResultBuilder]: For program point L398(lines 398 402) no Hoare annotation was computed. [2021-10-13 07:40:37,587 INFO L857 garLoopResultBuilder]: For program point L332(lines 332 336) no Hoare annotation was computed. [2021-10-13 07:40:37,587 INFO L857 garLoopResultBuilder]: For program point L332-2(lines 205 537) no Hoare annotation was computed. [2021-10-13 07:40:37,588 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 541) no Hoare annotation was computed. [2021-10-13 07:40:37,588 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 552) no Hoare annotation was computed. [2021-10-13 07:40:37,588 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 563) no Hoare annotation was computed. [2021-10-13 07:40:37,588 INFO L857 garLoopResultBuilder]: For program point L101-1(lines 68 622) no Hoare annotation was computed. [2021-10-13 07:40:37,593 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:40:37,612 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] [2021-10-13 07:40:37,614 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] [2021-10-13 07:40:37,618 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] [2021-10-13 07:40:37,620 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] [2021-10-13 07:40:37,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:40:37 BoogieIcfgContainer [2021-10-13 07:40:37,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:40:37,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:40:37,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:40:37,628 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:40:37,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:45" (3/4) ... [2021-10-13 07:40:37,631 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:40:37,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:40:37,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:40:37,650 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:40:37,651 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:40:37,680 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((s__hit == 0bv32 && !(5bv32 == blastFlag)) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32) || ((2bv32 == blastFlag && 208bv32 == ag_Y) && (\exists v_ULTIMATE.start_ssl3_connect_~s__state~0_364 : bv32 :: s__state == ~bvor32(v_ULTIMATE.start_ssl3_connect_~s__state~0_364, 208bv32)))) || ((s__hit == 0bv32 && 1bv32 == blastFlag) && s__state == 4384bv32)) || ((s__hit == 0bv32 && 4432bv32 == s__state) && !(5bv32 == blastFlag))) || (2bv32 == blastFlag && s__hit == 0bv32)) || ((s__hit == 0bv32 && !(5bv32 == blastFlag)) && 4480bv32 == s__state)) || ((2bv32 == blastFlag && 208bv32 == ag_Y) && s__state == 4528bv32)) || ((s__state == 4368bv32 && 0bv32 == blastFlag) && 208bv32 == ag_Y)) || ((s__hit == 0bv32 && s__state == 4448bv32) && !(5bv32 == blastFlag))) || ((s__hit == 0bv32 && s__state == 4528bv32) && !(5bv32 == blastFlag))) || ((4464bv32 == s__state && s__hit == 0bv32) && !(5bv32 == blastFlag))) || ((s__state == 4368bv32 && 0bv32 == blastFlag) && s__hit == 0bv32)) || (((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && 208bv32 == ag_Y) && s__state == 4352bv32)) || (s__hit == 0bv32 && 3bv32 == blastFlag)) || (((s__hit == 0bv32 && !(5bv32 == blastFlag)) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4560bv32)) || s__state == 3bv32) || ((s__hit == 0bv32 && !(5bv32 == blastFlag)) && s__state == 4512bv32)) || ((208bv32 == ag_Y && 1bv32 == blastFlag) && s__state == 4384bv32)) || ((2bv32 == blastFlag && 208bv32 == ag_Y) && s__state == 4512bv32)) || ((s__state == 4496bv32 && s__hit == 0bv32) && !(5bv32 == blastFlag)) [2021-10-13 07:40:37,683 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((2bv32 == blastFlag && 208bv32 == ag_Y) && (\exists v_ULTIMATE.start_ssl3_connect_~s__state~0_364 : bv32 :: s__state == ~bvor32(v_ULTIMATE.start_ssl3_connect_~s__state~0_364, 208bv32))) || (((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) [2021-10-13 07:40:37,773 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:40:37,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:40:37,775 INFO L168 Benchmark]: Toolchain (without parser) took 114239.36 ms. Allocated memory was 52.4 MB in the beginning and 851.4 MB in the end (delta: 799.0 MB). Free memory was 29.3 MB in the beginning and 542.4 MB in the end (delta: -513.2 MB). Peak memory consumption was 285.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:37,776 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 52.4 MB. Free memory was 33.6 MB in the beginning and 33.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:37,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.51 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 43.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:37,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.75 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 40.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:37,778 INFO L168 Benchmark]: Boogie Preprocessor took 72.15 ms. Allocated memory is still 62.9 MB. Free memory was 40.8 MB in the beginning and 38.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:37,778 INFO L168 Benchmark]: RCFGBuilder took 934.72 ms. Allocated memory is still 62.9 MB. Free memory was 38.7 MB in the beginning and 43.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:37,778 INFO L168 Benchmark]: TraceAbstraction took 112564.68 ms. Allocated memory was 62.9 MB in the beginning and 851.4 MB in the end (delta: 788.5 MB). Free memory was 43.1 MB in the beginning and 551.9 MB in the end (delta: -508.7 MB). Peak memory consumption was 506.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:37,779 INFO L168 Benchmark]: Witness Printer took 146.13 ms. Allocated memory is still 851.4 MB. Free memory was 551.9 MB in the beginning and 542.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:37,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 52.4 MB. Free memory was 33.6 MB in the beginning and 33.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 431.51 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 43.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.75 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 40.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.15 ms. Allocated memory is still 62.9 MB. Free memory was 40.8 MB in the beginning and 38.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 934.72 ms. Allocated memory is still 62.9 MB. Free memory was 38.7 MB in the beginning and 43.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 112564.68 ms. Allocated memory was 62.9 MB in the beginning and 851.4 MB in the end (delta: 788.5 MB). Free memory was 43.1 MB in the beginning and 551.9 MB in the end (delta: -508.7 MB). Peak memory consumption was 506.1 MB. Max. memory is 16.1 GB. * Witness Printer took 146.13 ms. Allocated memory is still 851.4 MB. Free memory was 551.9 MB in the beginning and 542.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] * 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: 616]: 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, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 112457.0ms, OverallIterations: 21, TraceHistogramMax: 14, EmptinessCheckTime: 168.1ms, AutomataDifference: 5773.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3845.7ms, InitialAbstractionConstructionTime: 14.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3693 SDtfs, 3243 SDslu, 3464 SDs, 0 SdLazy, 3102 SolverSat, 592 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2655.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15371 GetRequests, 15267 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 609.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10964occurred in iteration=18, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2457.2ms AutomataMinimizationTime, 21 MinimizatonAttempts, 2413 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 23 LocationsWithAnnotation, 23 PreInvPairs, 217 NumberOfFragments, 1380 HoareAnnotationTreeSize, 23 FomulaSimplifications, 7732 FormulaSimplificationTreeSizeReduction, 755.4ms HoareSimplificationTime, 23 FomulaSimplificationsInter, 2541 FormulaSimplificationTreeSizeReductionInter, 3077.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 727.2ms SsaConstructionTime, 2725.0ms SatisfiabilityAnalysisTime, 35327.5ms InterpolantComputationTime, 7715 NumberOfCodeBlocks, 7715 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 15354 ConstructedInterpolants, 774 QuantifiedInterpolants, 25503 SizeOfPredicates, 47 NumberOfNonLiveVariables, 10934 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 76 InterpolantComputations, 38 PerfectInterpolantSequences, 45642/46466 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((((s__state == 12292bv32 && s__hit == 0bv32) && 3bv32 == blastFlag) || ((0bv32 == blastFlag && s__state == 12292bv32) && 208bv32 == ag_Y)) || ((s__state == 12292bv32 && 2bv32 == blastFlag) && s__hit == 0bv32)) || ((0bv32 == blastFlag && s__state == 12292bv32) && s__hit == 0bv32) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 173]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && 208bv32 == ag_Y) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) || ((((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: (((((s__hit == 0bv32 && !(5bv32 == blastFlag)) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32) || (((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && 208bv32 == ag_Y) && s__state == 4352bv32)) || ((s__hit == 0bv32 && 3bv32 == blastFlag) && s__state == 4352bv32)) || ((2bv32 == blastFlag && s__hit == 0bv32) && s__state == 4352bv32) - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && 3bv32 == blastFlag) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) || ((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((((((((((0bv32 == blastFlag && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) || ((((((((s__hit == 0bv32 && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 16384bv32)) && 3bv32 == blastFlag) && !(s__state == 4099bv32)) && !(s__state == 4384bv32))) || ((((((((2bv32 == blastFlag && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32))) || ((((((((((0bv32 == blastFlag && 208bv32 == ag_Y) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) - InvariantResult [Line: 191]: Loop Invariant [2021-10-13 07:40:37,815 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] [2021-10-13 07:40:37,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] Derived loop invariant: ((2bv32 == blastFlag && 208bv32 == ag_Y) && (\exists v_ULTIMATE.start_ssl3_connect_~s__state~0_364 : bv32 :: s__state == ~bvor32(v_ULTIMATE.start_ssl3_connect_~s__state~0_364, 208bv32))) || (((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: ((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 4384bv32)) || ((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && 3bv32 == blastFlag) && !(s__state == 4384bv32))) || ((((((((((!(s__state == 4368bv32) && 0bv32 == blastFlag) && 208bv32 == ag_Y) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32))) || (((((((((!(s__state == 4368bv32) && 0bv32 == blastFlag) && s__hit == 0bv32) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 101]: Loop Invariant [2021-10-13 07:40:37,820 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] [2021-10-13 07:40:37,820 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_ssl3_connect_~s__state~0_364,QUANTIFIED] Derived loop invariant: (((((((((((((((((((((s__hit == 0bv32 && !(5bv32 == blastFlag)) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32) || ((2bv32 == blastFlag && 208bv32 == ag_Y) && (\exists v_ULTIMATE.start_ssl3_connect_~s__state~0_364 : bv32 :: s__state == ~bvor32(v_ULTIMATE.start_ssl3_connect_~s__state~0_364, 208bv32)))) || ((s__hit == 0bv32 && 1bv32 == blastFlag) && s__state == 4384bv32)) || ((s__hit == 0bv32 && 4432bv32 == s__state) && !(5bv32 == blastFlag))) || (2bv32 == blastFlag && s__hit == 0bv32)) || ((s__hit == 0bv32 && !(5bv32 == blastFlag)) && 4480bv32 == s__state)) || ((2bv32 == blastFlag && 208bv32 == ag_Y) && s__state == 4528bv32)) || ((s__state == 4368bv32 && 0bv32 == blastFlag) && 208bv32 == ag_Y)) || ((s__hit == 0bv32 && s__state == 4448bv32) && !(5bv32 == blastFlag))) || ((s__hit == 0bv32 && s__state == 4528bv32) && !(5bv32 == blastFlag))) || ((4464bv32 == s__state && s__hit == 0bv32) && !(5bv32 == blastFlag))) || ((s__state == 4368bv32 && 0bv32 == blastFlag) && s__hit == 0bv32)) || (((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && 208bv32 == ag_Y) && s__state == 4352bv32)) || (s__hit == 0bv32 && 3bv32 == blastFlag)) || (((s__hit == 0bv32 && !(5bv32 == blastFlag)) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4560bv32)) || s__state == 3bv32) || ((s__hit == 0bv32 && !(5bv32 == blastFlag)) && s__state == 4512bv32)) || ((208bv32 == ag_Y && 1bv32 == blastFlag) && s__state == 4384bv32)) || ((2bv32 == blastFlag && 208bv32 == ag_Y) && s__state == 4512bv32)) || ((s__state == 4496bv32 && s__hit == 0bv32) && !(5bv32 == blastFlag)) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 624]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 155]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 4368bv32) && 208bv32 == ag_Y) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && 1bv32 == blastFlag) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) || (((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && 1bv32 == blastFlag) && !(s__state == 16384bv32)) && !(s__state == 4099bv32))) || ((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && 3bv32 == blastFlag) && !(s__state == 4099bv32))) || ((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && 3bv32 == blastFlag) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) || ((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && 208bv32 == ag_Y) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) || ((((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:40:37,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4780436-9c2a-4be9-8f12-6c91dc6b3f50/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...