./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.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_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/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_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/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_73a53d4b-7937-4925-8f6d-99517fde0881/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 a8da7bb6495346e44a0ef3b7d50d5e0fbdae8843 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/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_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/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_73a53d4b-7937-4925-8f6d-99517fde0881/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 a8da7bb6495346e44a0ef3b7d50d5e0fbdae8843 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:52:59,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:52:59,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:52:59,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:52:59,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:52:59,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:52:59,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:52:59,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:52:59,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:52:59,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:52:59,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:52:59,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:52:59,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:52:59,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:52:59,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:52:59,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:52:59,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:52:59,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:52:59,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:52:59,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:52:59,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:52:59,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:52:59,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:52:59,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:52:59,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:52:59,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:52:59,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:52:59,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:52:59,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:52:59,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:52:59,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:52:59,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:52:59,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:52:59,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:52:59,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:52:59,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:52:59,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:52:59,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:52:59,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:52:59,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:52:59,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:52:59,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:52:59,291 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:52:59,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:52:59,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:52:59,292 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:52:59,293 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:52:59,293 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:52:59,293 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:52:59,293 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:52:59,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:52:59,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:52:59,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:52:59,294 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:52:59,295 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:52:59,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:52:59,295 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:52:59,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:52:59,296 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:52:59,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:52:59,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:52:59,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:52:59,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:52:59,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:52:59,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:52:59,306 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:52:59,306 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:52:59,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:52:59,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:52:59,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:52:59,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:52:59,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:52:59,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:59,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:52:59,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:52:59,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:52:59,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:52:59,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:52:59,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:52:59,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:52:59,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:52:59,310 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_73a53d4b-7937-4925-8f6d-99517fde0881/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8da7bb6495346e44a0ef3b7d50d5e0fbdae8843 [2021-10-13 07:52:59,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:52:59,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:52:59,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:52:59,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:52:59,623 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:52:59,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c [2021-10-13 07:52:59,731 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/data/b7850395a/e642cc89e9eb4cd5823e3a3c043b15c3/FLAGa81473fad [2021-10-13 07:53:00,228 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:53:00,229 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c [2021-10-13 07:53:00,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/data/b7850395a/e642cc89e9eb4cd5823e3a3c043b15c3/FLAGa81473fad [2021-10-13 07:53:00,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/data/b7850395a/e642cc89e9eb4cd5823e3a3c043b15c3 [2021-10-13 07:53:00,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:53:00,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:53:00,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:53:00,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:53:00,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:53:00,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651424a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00, skipping insertion in model container [2021-10-13 07:53:00,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:53:00,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:53:00,853 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_73a53d4b-7937-4925-8f6d-99517fde0881/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c[520,533] [2021-10-13 07:53:00,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:53:00,880 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:53:00,894 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_73a53d4b-7937-4925-8f6d-99517fde0881/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c[520,533] [2021-10-13 07:53:00,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:53:00,916 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:53:00,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00 WrapperNode [2021-10-13 07:53:00,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:53:00,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:53:00,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:53:00,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:53:00,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:53:00,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:53:00,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:53:00,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:53:00,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:00,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:53:00,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:53:00,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:53:00,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:53:00,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (1/1) ... [2021-10-13 07:53:01,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:53:01,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:01,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:53:01,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:53:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:53:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:53:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:53:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:53:01,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:53:01,355 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 07:53:01,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:01 BoogieIcfgContainer [2021-10-13 07:53:01,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:53:01,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:53:01,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:53:01,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:53:01,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:00" (1/3) ... [2021-10-13 07:53:01,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd46e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:01, skipping insertion in model container [2021-10-13 07:53:01,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:00" (2/3) ... [2021-10-13 07:53:01,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd46e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:01, skipping insertion in model container [2021-10-13 07:53:01,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:01" (3/3) ... [2021-10-13 07:53:01,367 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound1.c [2021-10-13 07:53:01,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:53:01,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:53:01,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:53:01,432 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 07:53:01,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:53:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 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 07:53:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:53:01,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:01,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:53:01,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:01,462 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2021-10-13 07:53:01,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:53:01,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158771400] [2021-10-13 07:53:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:01,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:53:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:01,652 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 07:53:01,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:53:01,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158771400] [2021-10-13 07:53:01,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158771400] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:01,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:01,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:53:01,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319101584] [2021-10-13 07:53:01,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:53:01,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:53:01,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:53:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:53:01,710 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 07:53:01,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:01,726 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2021-10-13 07:53:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:53:01,728 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-13 07:53:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:01,739 INFO L225 Difference]: With dead ends: 57 [2021-10-13 07:53:01,740 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 07:53:01,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:53:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 07:53:01,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-13 07:53:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 26 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 07:53:01,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-13 07:53:01,789 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2021-10-13 07:53:01,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:01,789 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-13 07:53:01,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 07:53:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-13 07:53:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:53:01,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:01,791 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:53:01,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:53:01,792 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:01,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:01,793 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2021-10-13 07:53:01,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:53:01,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662828976] [2021-10-13 07:53:01,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:01,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:53:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:01,922 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 07:53:01,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:53:01,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662828976] [2021-10-13 07:53:01,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662828976] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:01,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:01,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:53:01,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890747816] [2021-10-13 07:53:01,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:53:01,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:53:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:53:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:53:01,927 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 07:53:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:02,019 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-10-13 07:53:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:53:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-13 07:53:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:02,024 INFO L225 Difference]: With dead ends: 54 [2021-10-13 07:53:02,024 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 07:53:02,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:53:02,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 07:53:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2021-10-13 07:53:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:02,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2021-10-13 07:53:02,037 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 5 [2021-10-13 07:53:02,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:02,038 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2021-10-13 07:53:02,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 07:53:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2021-10-13 07:53:02,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:53:02,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:02,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:02,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:53:02,040 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:02,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:02,040 INFO L82 PathProgramCache]: Analyzing trace with hash 225868067, now seen corresponding path program 1 times [2021-10-13 07:53:02,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:53:02,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073840259] [2021-10-13 07:53:02,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:02,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:53:02,091 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:53:02,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618764672] [2021-10-13 07:53:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:02,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:02,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:02,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:53:02,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:53:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:02,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:53:02,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:02,334 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 07:53:02,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:02,455 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 07:53:02,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:53:02,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073840259] [2021-10-13 07:53:02,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:53:02,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618764672] [2021-10-13 07:53:02,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618764672] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:02,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:02,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:53:02,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312221882] [2021-10-13 07:53:02,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:53:02,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:53:02,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:53:02,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:53:02,461 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states 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 07:53:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:02,574 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-10-13 07:53:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:53:02,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 7 [2021-10-13 07:53:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:02,577 INFO L225 Difference]: With dead ends: 49 [2021-10-13 07:53:02,579 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 07:53:02,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:53:02,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 07:53:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-10-13 07:53:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.303030303030303) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 07:53:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-10-13 07:53:02,595 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 7 [2021-10-13 07:53:02,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:02,596 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-13 07:53:02,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states 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 07:53:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-10-13 07:53:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:53:02,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:02,598 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:02,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:02,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:02,823 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:02,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1983963802, now seen corresponding path program 1 times [2021-10-13 07:53:02,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:53:02,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311534969] [2021-10-13 07:53:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:02,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:53:02,841 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:53:02,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684450847] [2021-10-13 07:53:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:02,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:02,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:02,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:53:02,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:53:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:02,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:53:02,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:03,095 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 07:53:03,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:03,211 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 07:53:03,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:53:03,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311534969] [2021-10-13 07:53:03,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:53:03,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684450847] [2021-10-13 07:53:03,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684450847] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:03,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:03,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:53:03,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453089064] [2021-10-13 07:53:03,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:53:03,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:53:03,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:53:03,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:53:03,215 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:03,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:03,412 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-10-13 07:53:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:53:03,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:53:03,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:03,413 INFO L225 Difference]: With dead ends: 42 [2021-10-13 07:53:03,413 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 07:53:03,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:53:03,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 07:53:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 07:53:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.2) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-13 07:53:03,420 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2021-10-13 07:53:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:03,420 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-13 07:53:03,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-13 07:53:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:53:03,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:03,421 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:03,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-13 07:53:03,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:03,635 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:03,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:03,635 INFO L82 PathProgramCache]: Analyzing trace with hash 966688274, now seen corresponding path program 1 times [2021-10-13 07:53:03,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:53:03,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496419931] [2021-10-13 07:53:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:03,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:53:03,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:53:03,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293321885] [2021-10-13 07:53:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:03,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:03,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:03,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:53:03,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:53:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:03,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:53:03,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:03,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:03,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:53:03,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496419931] [2021-10-13 07:53:03,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:53:03,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293321885] [2021-10-13 07:53:03,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293321885] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:03,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1936943180] [2021-10-13 07:53:03,825 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-13 07:53:03,825 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:53:03,829 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:53:03,835 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:53:03,835 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:53:03,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:53:03,871 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:53:03,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:53:03,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:53:03,877 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:53:03,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:53:03,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:53:03,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-13 07:53:03,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:53:03,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:53:03,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:53:03,987 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:53:03,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:53:03,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:53:03,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:53:03,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:53:03,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:53:03,995 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:53:03,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:53:04,022 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:53:04,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:53:04,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-10-13 07:53:04,029 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:53:04,029 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:136, output treesize:120 [2021-10-13 07:53:04,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:04,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:04,247 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_9| 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 07:53:04,250 INFO L168 Benchmark]: Toolchain (without parser) took 3623.66 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 64.6 MB in the beginning and 96.6 MB in the end (delta: -32.0 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:04,251 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 94.4 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:04,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.24 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 64.6 MB in the beginning and 106.8 MB in the end (delta: -42.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:04,252 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.12 ms. Allocated memory is still 130.0 MB. Free memory was 106.8 MB in the beginning and 105.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:04,252 INFO L168 Benchmark]: Boogie Preprocessor took 25.71 ms. Allocated memory is still 130.0 MB. Free memory was 105.3 MB in the beginning and 104.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:04,253 INFO L168 Benchmark]: RCFGBuilder took 370.44 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 92.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:04,253 INFO L168 Benchmark]: TraceAbstraction took 2889.75 ms. Allocated memory is still 130.0 MB. Free memory was 92.2 MB in the beginning and 96.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:04,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 94.4 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.24 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 64.6 MB in the beginning and 106.8 MB in the end (delta: -42.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.12 ms. Allocated memory is still 130.0 MB. Free memory was 106.8 MB in the beginning and 105.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.71 ms. Allocated memory is still 130.0 MB. Free memory was 105.3 MB in the beginning and 104.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 370.44 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 92.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2889.75 ms. Allocated memory is still 130.0 MB. Free memory was 92.2 MB in the beginning and 96.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_9| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_9|: 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 07:53:04,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/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 07:53:06,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:53:06,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:53:06,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:53:06,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:53:06,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:53:06,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:53:06,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:53:06,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:53:06,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:53:06,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:53:06,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:53:06,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:53:06,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:53:06,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:53:07,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:53:07,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:53:07,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:53:07,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:53:07,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:53:07,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:53:07,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:53:07,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:53:07,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:53:07,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:53:07,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:53:07,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:53:07,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:53:07,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:53:07,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:53:07,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:53:07,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:53:07,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:53:07,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:53:07,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:53:07,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:53:07,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:53:07,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:53:07,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:53:07,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:53:07,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:53:07,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:53:07,108 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:53:07,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:53:07,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:53:07,110 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:53:07,110 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:53:07,111 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:53:07,111 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:53:07,111 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:53:07,111 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:53:07,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:53:07,114 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:53:07,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:53:07,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:53:07,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:53:07,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:53:07,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:53:07,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:53:07,116 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:53:07,116 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:53:07,116 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:53:07,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:53:07,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:53:07,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:53:07,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:53:07,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:53:07,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:53:07,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:53:07,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:53:07,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:53:07,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:53:07,119 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:53:07,119 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:07,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:53:07,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:53:07,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:53:07,120 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_73a53d4b-7937-4925-8f6d-99517fde0881/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8da7bb6495346e44a0ef3b7d50d5e0fbdae8843 [2021-10-13 07:53:07,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:53:07,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:53:07,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:53:07,604 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:53:07,605 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:53:07,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c [2021-10-13 07:53:07,686 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/data/a339406b4/35131e62957746cc9956fb96c824bf7b/FLAGf06a84c3d [2021-10-13 07:53:08,248 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:53:08,250 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c [2021-10-13 07:53:08,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/data/a339406b4/35131e62957746cc9956fb96c824bf7b/FLAGf06a84c3d [2021-10-13 07:53:08,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/data/a339406b4/35131e62957746cc9956fb96c824bf7b [2021-10-13 07:53:08,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:53:08,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:53:08,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:53:08,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:53:08,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:53:08,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:08,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d72ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08, skipping insertion in model container [2021-10-13 07:53:08,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:08,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:53:08,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:53:08,823 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_73a53d4b-7937-4925-8f6d-99517fde0881/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c[520,533] [2021-10-13 07:53:08,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:53:08,869 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:53:08,898 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_73a53d4b-7937-4925-8f6d-99517fde0881/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c[520,533] [2021-10-13 07:53:08,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:53:08,950 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:53:08,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08 WrapperNode [2021-10-13 07:53:08,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:53:08,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:53:08,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:53:08,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:53:08,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:08,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:08,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:53:08,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:53:08,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:53:08,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:53:09,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:09,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:09,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:09,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:09,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:09,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:09,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:09,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:53:09,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:53:09,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:53:09,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:53:09,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2021-10-13 07:53:09,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:53:09,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:09,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:53:09,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:53:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:53:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:53:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:53:09,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:53:10,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:53:10,233 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 07:53:10,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:10 BoogieIcfgContainer [2021-10-13 07:53:10,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:53:10,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:53:10,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:53:10,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:53:10,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:08" (1/3) ... [2021-10-13 07:53:10,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44cee0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:10, skipping insertion in model container [2021-10-13 07:53:10,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (2/3) ... [2021-10-13 07:53:10,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44cee0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:10, skipping insertion in model container [2021-10-13 07:53:10,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:10" (3/3) ... [2021-10-13 07:53:10,244 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound1.c [2021-10-13 07:53:10,250 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:53:10,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:53:10,300 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:53:10,307 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 07:53:10,308 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:53:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:53:10,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:10,327 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:53:10,328 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:10,339 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-10-13 07:53:10,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:10,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374143447] [2021-10-13 07:53:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:10,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:10,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:10,365 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:10,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:53:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:10,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:53:10,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:10,515 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 07:53:10,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:10,543 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 07:53:10,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:10,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374143447] [2021-10-13 07:53:10,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374143447] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:10,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:10,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:53:10,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952955587] [2021-10-13 07:53:10,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:53:10,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:10,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:53:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:53:10,571 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states 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 07:53:10,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:10,589 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-10-13 07:53:10,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:53:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-13 07:53:10,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:10,599 INFO L225 Difference]: With dead ends: 62 [2021-10-13 07:53:10,599 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 07:53:10,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:53:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 07:53:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 07:53:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 07:53:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-13 07:53:10,638 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-10-13 07:53:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:10,639 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-13 07:53:10,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states 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 07:53:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-13 07:53:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:53:10,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:10,640 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:53:10,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:10,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:53:10,853 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:10,854 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-13 07:53:10,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:10,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897703164] [2021-10-13 07:53:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:10,857 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:10,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:10,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:10,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:53:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:10,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:53:10,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:11,063 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 07:53:11,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:11,156 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 07:53:11,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:11,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897703164] [2021-10-13 07:53:11,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897703164] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:11,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:11,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:53:11,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904700618] [2021-10-13 07:53:11,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:53:11,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:11,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:53:11,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:53:11,162 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 07:53:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:11,986 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-13 07:53:11,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:53:11,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 6 [2021-10-13 07:53:11,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:11,989 INFO L225 Difference]: With dead ends: 51 [2021-10-13 07:53:11,996 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 07:53:11,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:53:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 07:53:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 24. [2021-10-13 07:53:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 23 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 07:53:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-13 07:53:12,015 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 6 [2021-10-13 07:53:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:12,015 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-13 07:53:12,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 07:53:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-13 07:53:12,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:53:12,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:12,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:12,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:12,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:53:12,217 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:12,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:12,218 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-13 07:53:12,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:12,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033041127] [2021-10-13 07:53:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:12,219 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:12,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:12,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:12,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:53:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:12,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:53:12,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:12,464 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 07:53:12,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:14,076 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 07:53:14,077 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:14,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033041127] [2021-10-13 07:53:14,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033041127] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:14,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:14,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:53:14,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513213654] [2021-10-13 07:53:14,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:53:14,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:53:14,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:53:14,080 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 07:53:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:15,314 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2021-10-13 07:53:15,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:53:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:53:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:15,323 INFO L225 Difference]: With dead ends: 47 [2021-10-13 07:53:15,323 INFO L226 Difference]: Without dead ends: 43 [2021-10-13 07:53:15,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 758.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:53:15,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-13 07:53:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2021-10-13 07:53:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-13 07:53:15,335 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2021-10-13 07:53:15,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:15,335 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-13 07:53:15,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 07:53:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-13 07:53:15,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:53:15,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:15,337 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:15,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:15,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:53:15,550 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:15,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:15,551 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-13 07:53:15,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:15,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927235848] [2021-10-13 07:53:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:15,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:15,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:15,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:15,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:53:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:15,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:53:15,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:15,874 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 07:53:15,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:17,919 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 07:53:17,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:17,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927235848] [2021-10-13 07:53:17,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927235848] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:17,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:17,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:53:17,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700771144] [2021-10-13 07:53:17,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:53:17,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:17,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:53:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:53:17,922 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 07:53:25,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:25,178 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-10-13 07:53:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:53:25,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 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 10 [2021-10-13 07:53:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:25,189 INFO L225 Difference]: With dead ends: 64 [2021-10-13 07:53:25,189 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 07:53:25,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2898.9ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:53:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 07:53:25,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2021-10-13 07:53:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.2) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-13 07:53:25,214 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 10 [2021-10-13 07:53:25,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:25,215 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-13 07:53:25,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 07:53:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-13 07:53:25,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:53:25,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:25,216 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:25,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:25,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:53:25,438 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:25,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:25,440 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2021-10-13 07:53:25,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:25,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267467195] [2021-10-13 07:53:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:25,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:25,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:25,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:25,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:53:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:25,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:53:25,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:25,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:25,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:25,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267467195] [2021-10-13 07:53:25,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267467195] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:25,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [638760456] [2021-10-13 07:53:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:25,945 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:25,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:53:25,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:53:25,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-13 07:53:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:26,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:53:26,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:26,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:26,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [638760456] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:26,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059438848] [2021-10-13 07:53:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:26,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:26,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:26,467 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:53:26,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 07:53:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:26,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:53:26,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:26,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:26,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059438848] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:26,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:53:26,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2021-10-13 07:53:26,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358786890] [2021-10-13 07:53:26,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:53:26,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:26,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:53:26,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:53:26,882 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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 07:53:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:26,992 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2021-10-13 07:53:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:53:26,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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 16 [2021-10-13 07:53:26,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:26,996 INFO L225 Difference]: With dead ends: 50 [2021-10-13 07:53:26,996 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 07:53:26,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 134.9ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:53:26,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 07:53:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-13 07:53:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-10-13 07:53:27,005 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2021-10-13 07:53:27,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:27,006 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-10-13 07:53:27,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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 07:53:27,006 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-10-13 07:53:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:53:27,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:27,006 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:27,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:27,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:27,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:27,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:27,610 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:53:27,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:27,611 INFO L82 PathProgramCache]: Analyzing trace with hash 460813570, now seen corresponding path program 1 times [2021-10-13 07:53:27,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:27,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906244902] [2021-10-13 07:53:27,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:27,612 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:27,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:27,614 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:27,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:53:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:27,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:53:27,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:28,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:32,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:32,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906244902] [2021-10-13 07:53:32,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906244902] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:32,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [61214134] [2021-10-13 07:53:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:32,404 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:32,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:53:32,419 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:53:32,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-13 07:53:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:32,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:53:32,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:33,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:35,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [61214134] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:35,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748774845] [2021-10-13 07:53:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:35,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:35,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:35,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:53:35,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 07:53:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:35,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:53:35,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:36,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:42,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748774845] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:42,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:53:42,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 7] total 11 [2021-10-13 07:53:42,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235490051] [2021-10-13 07:53:42,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 07:53:43,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:43,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 07:53:43,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=74, Unknown=1, NotChecked=0, Total=110 [2021-10-13 07:53:43,001 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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 07:53:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:43,535 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-10-13 07:53:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:53:43,543 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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 17 [2021-10-13 07:53:43,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:43,544 INFO L225 Difference]: With dead ends: 18 [2021-10-13 07:53:43,544 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:53:43,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 6383.5ms TimeCoverageRelationStatistics Valid=44, Invalid=87, Unknown=1, NotChecked=0, Total=132 [2021-10-13 07:53:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:53:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:53:43,545 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 07:53:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:53:43,545 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-13 07:53:43,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:43,546 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:53:43,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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 07:53:43,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:53:43,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:53:43,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:53:43,550 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:53:43,550 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:53:43,550 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:53:43,550 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:53:43,551 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:53:43,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:43,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:43,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:44,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:44,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:53:44,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:53:44,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:53:44,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:53:44,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:53:44,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:53:44,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:53:44,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:53:44,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:53:46,767 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:53:46,768 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:53:46,768 INFO L860 garLoopResultBuilder]: At program point L48(lines 21 49) the Hoare annotation is: true [2021-10-13 07:53:46,768 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:53:46,768 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:53:46,768 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:53:46,768 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:53:46,769 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:53:46,769 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:53:46,769 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= ~counter~0 (_ bv1 32)) (= .cse0 ULTIMATE.start_main_~t~0) (= .cse0 ULTIMATE.start_main_~s~0) (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~a~0) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) [2021-10-13 07:53:46,769 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:53:46,769 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= ~counter~0 (_ bv1 32)) (= .cse0 ULTIMATE.start_main_~t~0) (= .cse0 ULTIMATE.start_main_~s~0) (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~a~0) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) [2021-10-13 07:53:46,769 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:53:46,770 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= ~counter~0 (_ bv1 32)) (= .cse0 ULTIMATE.start_main_~t~0) (= .cse0 ULTIMATE.start_main_~s~0) (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~a~0) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) [2021-10-13 07:53:46,770 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:53:46,770 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse3 ((_ sign_extend 32) (_ bv0 32))) (.cse0 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse4 (= ULTIMATE.start_main_~t~0 (bvadd .cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2))))) (or (and (not (bvslt (bvadd ~counter~0 (_ bv1 32)) (_ bv1 32))) (not (bvslt ~counter~0 (_ bv1 32))) .cse0 (= (bvadd (bvmul (_ bv2 64) .cse1) .cse2) ULTIMATE.start_main_~s~0) (= ULTIMATE.start_main_~a~0 (bvadd .cse3 .cse1)) .cse4) (and (= .cse1 ULTIMATE.start_main_~s~0) (= .cse3 ULTIMATE.start_main_~a~0) .cse0 .cse4)))) [2021-10-13 07:53:46,770 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:53:46,770 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:53:46,771 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) (bvmul ULTIMATE.start_main_~t~0 .cse1)) ((_ sign_extend 32) (_ bv0 32))) (= ULTIMATE.start_main_~t~0 (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1))))) [2021-10-13 07:53:46,771 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:53:46,771 INFO L860 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-10-13 07:53:46,771 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:53:46,771 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:53:46,771 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:53:46,771 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:53:46,771 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:53:46,772 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:53:46,772 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:53:46,772 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2021-10-13 07:53:46,772 INFO L853 garLoopResultBuilder]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse2 ((_ sign_extend 32) (_ bv0 32)))) (or (let ((.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (= ~counter~0 (_ bv1 32)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= (bvadd (bvmul (_ bv2 64) .cse0) .cse1) ULTIMATE.start_main_~s~0) (= ULTIMATE.start_main_~a~0 (bvadd .cse2 .cse0)) (= ULTIMATE.start_main_~t~0 (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1))))) (and (= .cse0 ULTIMATE.start_main_~t~0) (= ~counter~0 (_ bv0 32)) (= .cse0 ULTIMATE.start_main_~s~0) (= .cse2 ULTIMATE.start_main_~a~0)))) [2021-10-13 07:53:46,772 INFO L857 garLoopResultBuilder]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2021-10-13 07:53:46,772 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:53:46,778 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:53:46,795 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) 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 07:53:46,799 INFO L168 Benchmark]: Toolchain (without parser) took 38220.22 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 53.7 MB in the beginning and 52.9 MB in the end (delta: 796.3 kB). Peak memory consumption was 45.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:46,800 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 69.2 MB. Free memory was 50.0 MB in the beginning and 49.9 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:46,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.35 ms. Allocated memory is still 69.2 MB. Free memory was 53.6 MB in the beginning and 53.1 MB in the end (delta: 508.7 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:46,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.16 ms. Allocated memory is still 69.2 MB. Free memory was 53.1 MB in the beginning and 51.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:46,801 INFO L168 Benchmark]: Boogie Preprocessor took 60.92 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 50.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:46,802 INFO L168 Benchmark]: RCFGBuilder took 1177.79 ms. Allocated memory is still 69.2 MB. Free memory was 50.2 MB in the beginning and 39.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:46,802 INFO L168 Benchmark]: TraceAbstraction took 36559.84 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 39.0 MB in the beginning and 52.9 MB in the end (delta: -14.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:46,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 69.2 MB. Free memory was 50.0 MB in the beginning and 49.9 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.35 ms. Allocated memory is still 69.2 MB. Free memory was 53.6 MB in the beginning and 53.1 MB in the end (delta: 508.7 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.16 ms. Allocated memory is still 69.2 MB. Free memory was 53.1 MB in the beginning and 51.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.92 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 50.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1177.79 ms. Allocated memory is still 69.2 MB. Free memory was 50.2 MB in the beginning and 39.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 36559.84 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 39.0 MB in the beginning and 52.9 MB in the end (delta: -14.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 36479.8ms, OverallIterations: 6, TraceHistogramMax: 2, EmptinessCheckTime: 12.1ms, AutomataDifference: 10058.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2608.2ms, InitialAbstractionConstructionTime: 9.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 106 SDtfs, 142 SDslu, 172 SDs, 0 SdLazy, 190 SolverSat, 97 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 6850.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 10325.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=4, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 82.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 37 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 19 NumberOfFragments, 201 HoareAnnotationTreeSize, 8 FomulaSimplifications, 137 FormulaSimplificationTreeSizeReduction, 183.8ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 278 FormulaSimplificationTreeSizeReductionInter, 2416.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 78.9ms SsaConstructionTime, 1173.5ms SatisfiabilityAnalysisTime, 19517.0ms InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 238 ConstructedInterpolants, 0 QuantifiedInterpolants, 2048 SizeOfPredicates, 26 NumberOfNonLiveVariables, 451 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 18/42 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 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((counter == 1bv32 && ~sign_extendFrom8To32(1bv32) == t) && ~sign_extendFrom8To32(1bv32) == s) && ~sign_extendFrom8To32(0bv32) == a) && cond == 1bv32 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((counter == 1bv32 && ~sign_extendFrom8To32(1bv32) == t) && ~sign_extendFrom8To32(1bv32) == s) && ~sign_extendFrom8To32(0bv32) == a) && cond == 1bv32 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((!~bvslt32(~bvadd16(counter, 1bv32), 1bv32) && !~bvslt32(counter, 1bv32)) && cond == 1bv32) && ~bvadd16(~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(2bv32)) == s) && a == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) || (((~sign_extendFrom8To32(1bv32) == s && ~sign_extendFrom8To32(0bv32) == a) && cond == 1bv32) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:53:46,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a53d4b-7937-4925-8f6d-99517fde0881/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...