./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG --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 d4eaedc28ae5d992289c7a8b613ef86763e8650d77dc38c2182a834015324e1e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG --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 d4eaedc28ae5d992289c7a8b613ef86763e8650d77dc38c2182a834015324e1e ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:53:59,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:53:59,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:53:59,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:53:59,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:53:59,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:53:59,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:53:59,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:53:59,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:53:59,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:53:59,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:53:59,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:53:59,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:53:59,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:53:59,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:53:59,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:53:59,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:53:59,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:53:59,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:53:59,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:53:59,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:53:59,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:53:59,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:53:59,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:53:59,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:53:59,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:53:59,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:53:59,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:53:59,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:53:59,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:53:59,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:53:59,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:53:59,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:53:59,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:53:59,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:53:59,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:53:59,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:53:59,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:53:59,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:53:59,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:53:59,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:53:59,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:53:59,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:53:59,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:53:59,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:53:59,257 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:53:59,257 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:53:59,258 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:53:59,258 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:53:59,258 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:53:59,258 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:53:59,259 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:53:59,260 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:53:59,260 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:53:59,260 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:53:59,261 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:53:59,261 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:53:59,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:53:59,262 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:53:59,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:53:59,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:53:59,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:53:59,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:53:59,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:53:59,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:53:59,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:53:59,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:53:59,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:53:59,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:53:59,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:53:59,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:53:59,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:53:59,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:53:59,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:53:59,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:53:59,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:53:59,268 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:53:59,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:53:59,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:53:59,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:53:59,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:53:59,269 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_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4eaedc28ae5d992289c7a8b613ef86763e8650d77dc38c2182a834015324e1e [2021-10-29 05:53:59,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:53:59,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:53:59,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:53:59,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:53:59,665 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:53:59,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/bitvector/byte_add-1.i [2021-10-29 05:53:59,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/data/903483f02/3bf8e1abc19745f5ad165e3cf32afe94/FLAGf08e49abe [2021-10-29 05:54:00,245 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:54:00,246 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/sv-benchmarks/c/bitvector/byte_add-1.i [2021-10-29 05:54:00,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/data/903483f02/3bf8e1abc19745f5ad165e3cf32afe94/FLAGf08e49abe [2021-10-29 05:54:00,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/data/903483f02/3bf8e1abc19745f5ad165e3cf32afe94 [2021-10-29 05:54:00,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:54:00,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:54:00,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:54:00,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:54:00,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:54:00,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:54:00" (1/1) ... [2021-10-29 05:54:00,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5f699c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:00, skipping insertion in model container [2021-10-29 05:54:00,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:54:00" (1/1) ... [2021-10-29 05:54:00,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:54:00,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:54:00,854 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_a537e9c8-9fd3-440d-bc12-38790cf0b12f/sv-benchmarks/c/bitvector/byte_add-1.i[861,874] [2021-10-29 05:54:00,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:54:00,947 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:54:00,969 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_a537e9c8-9fd3-440d-bc12-38790cf0b12f/sv-benchmarks/c/bitvector/byte_add-1.i[861,874] [2021-10-29 05:54:01,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:54:01,048 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:54:01,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01 WrapperNode [2021-10-29 05:54:01,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:54:01,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:54:01,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:54:01,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:54:01,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (1/1) ... [2021-10-29 05:54:01,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (1/1) ... [2021-10-29 05:54:01,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:54:01,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:54:01,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:54:01,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:54:01,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (1/1) ... [2021-10-29 05:54:01,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (1/1) ... [2021-10-29 05:54:01,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (1/1) ... [2021-10-29 05:54:01,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (1/1) ... [2021-10-29 05:54:01,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (1/1) ... [2021-10-29 05:54:01,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (1/1) ... [2021-10-29 05:54:01,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (1/1) ... [2021-10-29 05:54:01,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:54:01,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:54:01,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:54:01,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:54:01,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (1/1) ... [2021-10-29 05:54:01,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:54:01,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:54:01,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:54:01,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:54:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:54:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:54:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:54:01,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:54:02,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:54:02,319 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:54:02,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:54:02 BoogieIcfgContainer [2021-10-29 05:54:02,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:54:02,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:54:02,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:54:02,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:54:02,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:54:00" (1/3) ... [2021-10-29 05:54:02,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795da8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:54:02, skipping insertion in model container [2021-10-29 05:54:02,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:01" (2/3) ... [2021-10-29 05:54:02,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795da8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:54:02, skipping insertion in model container [2021-10-29 05:54:02,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:54:02" (3/3) ... [2021-10-29 05:54:02,331 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add-1.i [2021-10-29 05:54:02,337 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:54:02,337 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:54:02,439 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:54:02,446 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:54:02,456 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:54:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) [2021-10-29 05:54:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:54:02,493 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:02,494 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:54:02,495 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:02,512 INFO L85 PathProgramCache]: Analyzing trace with hash 272577235, now seen corresponding path program 1 times [2021-10-29 05:54:02,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:02,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382596349] [2021-10-29 05:54:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:02,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:02,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:02,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382596349] [2021-10-29 05:54:02,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382596349] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:02,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:02,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:54:02,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488879164] [2021-10-29 05:54:02,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:54:02,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:02,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:54:02,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:02,888 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2021-10-29 05:54:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:02,926 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-10-29 05:54:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:02,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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 [2021-10-29 05:54:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:02,937 INFO L225 Difference]: With dead ends: 15 [2021-10-29 05:54:02,938 INFO L226 Difference]: Without dead ends: 8 [2021-10-29 05:54:02,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-29 05:54:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-29 05:54:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2021-10-29 05:54:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2021-10-29 05:54:02,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5 [2021-10-29 05:54:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:02,976 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-10-29 05:54:02,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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) [2021-10-29 05:54:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2021-10-29 05:54:02,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:54:02,978 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:02,978 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:54:02,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:54:02,979 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash -139608693, now seen corresponding path program 1 times [2021-10-29 05:54:02,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:02,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052679406] [2021-10-29 05:54:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:02,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:03,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:03,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052679406] [2021-10-29 05:54:03,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052679406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:54:03,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070025514] [2021-10-29 05:54:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:03,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:54:03,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:54:03,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:54:03,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:54:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:03,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:54:03,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:03,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:03,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070025514] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:54:03,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [927582553] [2021-10-29 05:54:03,360 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-29 05:54:03,360 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:54:03,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:54:03,373 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:54:03,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:54:03,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,433 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:54:03,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:54:03,452 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:54:03,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 05:54:03,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-29 05:54:03,549 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_20|], 10=[|v_#valid_21|]} [2021-10-29 05:54:03,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:03,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:03,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,645 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:03,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:03,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:03,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,694 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:03,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:03,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:03,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,729 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:03,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:03,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:03,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,787 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:03,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:03,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:03,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,837 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:03,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:03,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:03,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,873 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:03,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:03,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:03,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,921 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:03,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:03,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:03,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,956 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:03,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:03,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:03,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:03,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:03,989 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:04,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,032 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:04,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,087 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:04,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,121 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:04,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,159 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:04,191 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,193 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:04,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,249 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:54:04,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,279 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:54:04,280 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:04,483 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:04,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,529 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:04,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,590 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:04,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,664 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:04,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,711 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:04,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,768 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:04,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,820 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:04,874 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,878 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:04,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:04,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:04,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:04,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:04,990 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:05,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:05,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,035 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:05,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:05,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,094 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:05,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:05,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,140 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:05,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:05,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,196 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,197 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:05,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:05,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,251 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:05,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:05,295 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,299 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:05,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:05,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,360 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:05,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:54:05,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:54:05,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:54:05,404 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-10-29 05:54:05,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:05,536 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:05,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2481 [2021-10-29 05:54:05,665 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 16 xjuncts. [2021-10-29 05:54:05,665 INFO L247 ElimStorePlain]: Needed 33 recursive calls to eliminate 2 variables, input treesize:2721, output treesize:2481 [2021-10-29 05:54:05,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:05,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:05,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:05,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:05,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:05,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:05,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:05,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:06,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:06,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:06,191 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:54:06,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:06,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1025 [2021-10-29 05:54:06,253 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:54:06,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:06,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-29 05:54:06,321 INFO L185 QuantifierPusher]: treesize reduction 15, result has 98.7 percent of original size 1111 [2021-10-29 05:54:06,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:06,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:54:07,337 INFO L185 QuantifierPusher]: treesize reduction 31, result has 79.6 percent of original size 121 [2021-10-29 05:54:07,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:07,426 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:54:08,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:54:08,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:54:08,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-10-29 05:54:08,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328128265] [2021-10-29 05:54:08,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:54:08,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:08,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:54:08,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:54:08,263 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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) [2021-10-29 05:54:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:08,386 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2021-10-29 05:54:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:54:08,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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 6 [2021-10-29 05:54:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:08,388 INFO L225 Difference]: With dead ends: 17 [2021-10-29 05:54:08,388 INFO L226 Difference]: Without dead ends: 14 [2021-10-29 05:54:08,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:54:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-29 05:54:08,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-29 05:54:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:08,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2021-10-29 05:54:08,393 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 6 [2021-10-29 05:54:08,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:08,393 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-10-29 05:54:08,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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) [2021-10-29 05:54:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2021-10-29 05:54:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:54:08,394 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:08,394 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-29 05:54:08,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:54:08,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:54:08,607 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:08,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1125637933, now seen corresponding path program 2 times [2021-10-29 05:54:08,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:08,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593873058] [2021-10-29 05:54:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:08,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-29 05:54:08,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:08,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593873058] [2021-10-29 05:54:08,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593873058] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:08,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:08,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:54:08,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767128707] [2021-10-29 05:54:08,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:54:08,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:08,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:54:08,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:08,807 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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) [2021-10-29 05:54:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:08,828 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-10-29 05:54:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:08,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 9 [2021-10-29 05:54:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:08,830 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:54:08,830 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 05:54:08,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 05:54:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-29 05:54:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-10-29 05:54:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-10-29 05:54:08,834 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 9 [2021-10-29 05:54:08,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:08,834 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-29 05:54:08,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2021-10-29 05:54:08,835 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-10-29 05:54:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:54:08,835 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:08,835 INFO L513 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:08,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-29 05:54:08,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash 630685329, now seen corresponding path program 1 times [2021-10-29 05:54:08,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:08,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138215974] [2021-10-29 05:54:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:08,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:54:09,126 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:54:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:54:09,269 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:54:09,269 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:54:09,270 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:54:09,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-29 05:54:09,275 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-10-29 05:54:09,278 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:54:09,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:54:09 BoogieIcfgContainer [2021-10-29 05:54:09,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:54:09,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:54:09,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:54:09,309 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:54:09,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:54:02" (3/4) ... [2021-10-29 05:54:09,313 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:54:09,313 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:54:09,314 INFO L168 Benchmark]: Toolchain (without parser) took 8706.50 ms. Allocated memory was 90.2 MB in the beginning and 176.2 MB in the end (delta: 86.0 MB). Free memory was 51.8 MB in the beginning and 89.1 MB in the end (delta: -37.3 MB). Peak memory consumption was 50.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:09,314 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:54:09,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.60 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 51.6 MB in the beginning and 83.7 MB in the end (delta: -32.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:09,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.73 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 82.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:09,316 INFO L168 Benchmark]: Boogie Preprocessor took 57.42 ms. Allocated memory is still 109.1 MB. Free memory was 81.6 MB in the beginning and 80.7 MB in the end (delta: 921.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:09,316 INFO L168 Benchmark]: RCFGBuilder took 1134.81 ms. Allocated memory is still 109.1 MB. Free memory was 80.7 MB in the beginning and 44.3 MB in the end (delta: 36.4 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:09,316 INFO L168 Benchmark]: TraceAbstraction took 6985.06 ms. Allocated memory was 109.1 MB in the beginning and 176.2 MB in the end (delta: 67.1 MB). Free memory was 43.7 MB in the beginning and 89.1 MB in the end (delta: -45.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:09,317 INFO L168 Benchmark]: Witness Printer took 4.14 ms. Allocated memory is still 176.2 MB. Free memory is still 89.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:54:09,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 453.60 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 51.6 MB in the beginning and 83.7 MB in the end (delta: -32.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.73 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 82.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.42 ms. Allocated memory is still 109.1 MB. Free memory was 81.6 MB in the beginning and 80.7 MB in the end (delta: 921.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1134.81 ms. Allocated memory is still 109.1 MB. Free memory was 80.7 MB in the beginning and 44.3 MB in the end (delta: 36.4 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6985.06 ms. Allocated memory was 109.1 MB in the beginning and 176.2 MB in the end (delta: 67.1 MB). Free memory was 43.7 MB in the beginning and 89.1 MB in the end (delta: -45.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.14 ms. Allocated memory is still 176.2 MB. Free memory is still 89.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 108, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L116] unsigned int a, b, r; [L118] a = __VERIFIER_nondet_uint() [L119] b = __VERIFIER_nondet_uint() [L34] unsigned char a0, a1, a2, a3; [L35] unsigned char b0, b1, b2, b3; [L36] unsigned char r0, r1, r2, r3; [L37] unsigned short carry; [L38] unsigned short partial_sum; [L39] unsigned int r; [L40] unsigned char i; [L41] unsigned char na, nb; [L42] a0 = a [L43] a1 = a >> 8 [L44] a2 = a >> 16U [L45] a3 = a >> 24U [L46] b0 = b [L47] b1 = b >> 8U [L48] b2 = b >> 16U [L49] b3 = b >> 24U [L50] na = (unsigned char)4 [L51] COND TRUE a3 == (unsigned char)0 [L52] na = na - 1 [L53] COND TRUE a2 == (unsigned char)0 [L54] na = na - 1 [L55] COND TRUE a1 == (unsigned char)0 [L56] na = na - 1 [L60] nb = (unsigned char)4 [L61] COND TRUE b3 == (unsigned char)0 [L62] nb = nb - 1 [L63] COND TRUE b2 == (unsigned char)0 [L64] nb = nb - 1 [L65] COND TRUE b1 == (unsigned char)0 [L66] nb = nb - 1 [L70] carry = (unsigned short)0 [L71] i = (unsigned char)0 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND TRUE i == (unsigned char)0 [L76] partial_sum = partial_sum + a0 [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND TRUE i < nb [L82] COND TRUE i == (unsigned char)0 [L82] partial_sum = partial_sum + b0 [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND FALSE !(partial_sum > ((unsigned char)254)) [L91] COND TRUE i == (unsigned char)0 [L91] r0 = (unsigned char)partial_sum [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L99] COND TRUE i < (unsigned char)4 [L100] COND FALSE !(i == (unsigned char)0) [L101] COND TRUE i == (unsigned char)1 [L101] r1 = (unsigned char)0 [L102] COND FALSE !(i == (unsigned char)2) [L103] COND FALSE !(i == (unsigned char)3) [L105] i = i + (unsigned char)1 [L99] COND TRUE i < (unsigned char)4 [L100] COND FALSE !(i == (unsigned char)0) [L101] COND FALSE !(i == (unsigned char)1) [L102] COND TRUE i == (unsigned char)2 [L102] r2 = (unsigned char)0 [L103] COND FALSE !(i == (unsigned char)3) [L105] i = i + (unsigned char)1 [L99] COND TRUE i < (unsigned char)4 [L100] COND FALSE !(i == (unsigned char)0) [L101] COND FALSE !(i == (unsigned char)1) [L102] COND FALSE !(i == (unsigned char)2) [L103] COND TRUE i == (unsigned char)3 [L103] r3 = (unsigned char)0 [L105] i = i + (unsigned char)1 [L99] COND FALSE !(i < (unsigned char)4) [L108] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L110] return r; [L121] r = mp_add(a, b) [L16] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.8s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 7 SDslu, 12 SDs, 0 SdLazy, 39 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 103 SizeOfPredicates, 1 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:54:09,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/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-b2eff8b [2021-10-29 05:54:12,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:54:12,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:54:12,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:54:12,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:54:12,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:54:12,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:54:12,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:54:12,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:54:12,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:54:12,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:54:12,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:54:12,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:54:12,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:54:12,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:54:12,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:54:12,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:54:12,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:54:12,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:54:12,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:54:12,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:54:12,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:54:12,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:54:12,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:54:12,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:54:12,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:54:12,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:54:12,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:54:12,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:54:12,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:54:12,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:54:12,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:54:12,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:54:12,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:54:12,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:54:12,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:54:12,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:54:12,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:54:12,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:54:12,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:54:12,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:54:12,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:54:12,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:54:12,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:54:12,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:54:12,345 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:54:12,345 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:54:12,346 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:54:12,346 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:54:12,346 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:54:12,346 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:54:12,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:54:12,349 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:54:12,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:54:12,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:54:12,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:54:12,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:54:12,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:54:12,351 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:54:12,351 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:54:12,352 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:54:12,352 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:54:12,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:54:12,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:54:12,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:54:12,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:54:12,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:54:12,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:54:12,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:54:12,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:54:12,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:54:12,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:54:12,355 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:54:12,355 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:54:12,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:54:12,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:54:12,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:54:12,357 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_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4eaedc28ae5d992289c7a8b613ef86763e8650d77dc38c2182a834015324e1e [2021-10-29 05:54:12,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:54:12,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:54:12,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:54:12,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:54:12,851 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:54:12,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/bitvector/byte_add-1.i [2021-10-29 05:54:12,924 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/data/73789a2b0/c9483ecd700f4cf3bddc7106774e5ede/FLAG16482bc8a [2021-10-29 05:54:13,458 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:54:13,459 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/sv-benchmarks/c/bitvector/byte_add-1.i [2021-10-29 05:54:13,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/data/73789a2b0/c9483ecd700f4cf3bddc7106774e5ede/FLAG16482bc8a [2021-10-29 05:54:13,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/data/73789a2b0/c9483ecd700f4cf3bddc7106774e5ede [2021-10-29 05:54:13,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:54:13,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:54:13,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:54:13,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:54:13,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:54:13,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b61c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13, skipping insertion in model container [2021-10-29 05:54:13,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:54:13,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:54:14,030 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_a537e9c8-9fd3-440d-bc12-38790cf0b12f/sv-benchmarks/c/bitvector/byte_add-1.i[861,874] [2021-10-29 05:54:14,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:54:14,082 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:54:14,104 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_a537e9c8-9fd3-440d-bc12-38790cf0b12f/sv-benchmarks/c/bitvector/byte_add-1.i[861,874] [2021-10-29 05:54:14,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:54:14,147 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:54:14,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14 WrapperNode [2021-10-29 05:54:14,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:54:14,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:54:14,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:54:14,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:54:14,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (1/1) ... [2021-10-29 05:54:14,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (1/1) ... [2021-10-29 05:54:14,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:54:14,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:54:14,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:54:14,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:54:14,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (1/1) ... [2021-10-29 05:54:14,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (1/1) ... [2021-10-29 05:54:14,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (1/1) ... [2021-10-29 05:54:14,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (1/1) ... [2021-10-29 05:54:14,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (1/1) ... [2021-10-29 05:54:14,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (1/1) ... [2021-10-29 05:54:14,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (1/1) ... [2021-10-29 05:54:14,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:54:14,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:54:14,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:54:14,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:54:14,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (1/1) ... [2021-10-29 05:54:14,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:54:14,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:54:14,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:54:14,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:54:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:54:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:54:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:54:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:54:14,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:54:14,889 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:54:14,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:54:14 BoogieIcfgContainer [2021-10-29 05:54:14,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:54:14,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:54:14,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:54:14,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:54:14,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:54:13" (1/3) ... [2021-10-29 05:54:14,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d1ed38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:54:14, skipping insertion in model container [2021-10-29 05:54:14,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:14" (2/3) ... [2021-10-29 05:54:14,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d1ed38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:54:14, skipping insertion in model container [2021-10-29 05:54:14,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:54:14" (3/3) ... [2021-10-29 05:54:14,918 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add-1.i [2021-10-29 05:54:14,936 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:54:14,937 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:54:15,017 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:54:15,029 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:54:15,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:54:15,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:54:15,075 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:15,076 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:15,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:15,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times [2021-10-29 05:54:15,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:54:15,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235638664] [2021-10-29 05:54:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:15,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:54:15,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:54:15,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:54:15,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:54:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:15,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:54:15,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:15,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:15,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:54:15,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235638664] [2021-10-29 05:54:15,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235638664] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:15,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:15,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:54:15,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382654996] [2021-10-29 05:54:15,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:54:15,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:54:15,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:54:15,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:54:15,482 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-10-29 05:54:15,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:15,510 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2021-10-29 05:54:15,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:54:15,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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 12 [2021-10-29 05:54:15,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:15,526 INFO L225 Difference]: With dead ends: 57 [2021-10-29 05:54:15,526 INFO L226 Difference]: Without dead ends: 38 [2021-10-29 05:54:15,530 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:54:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-29 05:54:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-29 05:54:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2021-10-29 05:54:15,588 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2021-10-29 05:54:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:15,589 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2021-10-29 05:54:15,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-10-29 05:54:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2021-10-29 05:54:15,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:54:15,592 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:15,593 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:15,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:54:15,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:54:15,807 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1803477009, now seen corresponding path program 1 times [2021-10-29 05:54:15,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:54:15,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411802152] [2021-10-29 05:54:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:15,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:54:15,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:54:15,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:54:15,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:54:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:15,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:54:15,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:16,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:16,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:54:16,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411802152] [2021-10-29 05:54:16,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411802152] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:16,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:16,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:54:16,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98059765] [2021-10-29 05:54:16,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:54:16,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:54:16,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:54:16,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:54:16,197 INFO L87 Difference]: Start difference. First operand 38 states and 64 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) [2021-10-29 05:54:16,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:16,732 INFO L93 Difference]: Finished difference Result 180 states and 315 transitions. [2021-10-29 05:54:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:54:16,734 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 12 [2021-10-29 05:54:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:16,742 INFO L225 Difference]: With dead ends: 180 [2021-10-29 05:54:16,742 INFO L226 Difference]: Without dead ends: 152 [2021-10-29 05:54:16,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:54:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-29 05:54:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 97. [2021-10-29 05:54:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.5833333333333333) internal successors, (152), 96 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 152 transitions. [2021-10-29 05:54:16,787 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 152 transitions. Word has length 12 [2021-10-29 05:54:16,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:16,790 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 152 transitions. [2021-10-29 05:54:16,791 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) [2021-10-29 05:54:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 152 transitions. [2021-10-29 05:54:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:54:16,794 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:16,795 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:16,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 05:54:17,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:54:17,014 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:17,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:17,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1251593412, now seen corresponding path program 1 times [2021-10-29 05:54:17,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:54:17,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938847282] [2021-10-29 05:54:17,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:17,025 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:54:17,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:54:17,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:54:17,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:54:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:17,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:54:17,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:17,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:17,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:54:17,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938847282] [2021-10-29 05:54:17,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938847282] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:17,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:17,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-29 05:54:17,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278474977] [2021-10-29 05:54:17,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:54:17,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:54:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:54:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:54:17,417 INFO L87 Difference]: Start difference. First operand 97 states and 152 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:18,197 INFO L93 Difference]: Finished difference Result 251 states and 421 transitions. [2021-10-29 05:54:18,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 05:54:18,198 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 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 14 [2021-10-29 05:54:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:18,200 INFO L225 Difference]: With dead ends: 251 [2021-10-29 05:54:18,200 INFO L226 Difference]: Without dead ends: 223 [2021-10-29 05:54:18,201 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:54:18,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-10-29 05:54:18,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 191. [2021-10-29 05:54:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.5947368421052632) internal successors, (303), 190 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 303 transitions. [2021-10-29 05:54:18,221 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 303 transitions. Word has length 14 [2021-10-29 05:54:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:18,222 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 303 transitions. [2021-10-29 05:54:18,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:18,222 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 303 transitions. [2021-10-29 05:54:18,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 05:54:18,225 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:18,225 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:18,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:54:18,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:54:18,439 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:18,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:18,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2087887882, now seen corresponding path program 1 times [2021-10-29 05:54:18,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:54:18,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712041350] [2021-10-29 05:54:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:18,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:54:18,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:54:18,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:54:18,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:54:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:18,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:54:18,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:18,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:18,753 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:54:18,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712041350] [2021-10-29 05:54:18,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712041350] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:18,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:18,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:54:18,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900209357] [2021-10-29 05:54:18,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:54:18,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:54:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:54:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:54:18,759 INFO L87 Difference]: Start difference. First operand 191 states and 303 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) [2021-10-29 05:54:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:18,927 INFO L93 Difference]: Finished difference Result 449 states and 722 transitions. [2021-10-29 05:54:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:54:18,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-29 05:54:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:18,929 INFO L225 Difference]: With dead ends: 449 [2021-10-29 05:54:18,929 INFO L226 Difference]: Without dead ends: 292 [2021-10-29 05:54:18,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:54:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-29 05:54:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 257. [2021-10-29 05:54:18,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.55078125) internal successors, (397), 256 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 397 transitions. [2021-10-29 05:54:18,951 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 397 transitions. Word has length 26 [2021-10-29 05:54:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:18,951 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 397 transitions. [2021-10-29 05:54:18,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) [2021-10-29 05:54:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 397 transitions. [2021-10-29 05:54:18,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 05:54:18,954 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:18,954 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:18,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:54:19,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:54:19,167 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash 73987210, now seen corresponding path program 1 times [2021-10-29 05:54:19,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:54:19,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643885240] [2021-10-29 05:54:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:19,169 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:54:19,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:54:19,171 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:54:19,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:54:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:19,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:54:19,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:19,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:19,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:54:19,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643885240] [2021-10-29 05:54:19,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643885240] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:19,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:19,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:54:19,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337241906] [2021-10-29 05:54:19,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:54:19,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:54:19,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:54:19,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:54:19,534 INFO L87 Difference]: Start difference. First operand 257 states and 397 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:19,844 INFO L93 Difference]: Finished difference Result 1005 states and 1558 transitions. [2021-10-29 05:54:19,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:54:19,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-29 05:54:19,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:19,850 INFO L225 Difference]: With dead ends: 1005 [2021-10-29 05:54:19,850 INFO L226 Difference]: Without dead ends: 784 [2021-10-29 05:54:19,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:54:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-29 05:54:19,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 636. [2021-10-29 05:54:19,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.5181102362204724) internal successors, (964), 635 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 964 transitions. [2021-10-29 05:54:19,885 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 964 transitions. Word has length 26 [2021-10-29 05:54:19,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:19,886 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 964 transitions. [2021-10-29 05:54:19,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 964 transitions. [2021-10-29 05:54:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 05:54:19,890 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:19,891 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:19,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:54:20,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:54:20,107 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1742793183, now seen corresponding path program 1 times [2021-10-29 05:54:20,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:54:20,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840532320] [2021-10-29 05:54:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:20,108 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:54:20,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:54:20,110 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:54:20,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:54:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:20,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:54:20,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:20,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:20,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:54:20,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840532320] [2021-10-29 05:54:20,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840532320] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:20,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:20,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-29 05:54:20,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543921613] [2021-10-29 05:54:20,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:54:20,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:54:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:54:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:54:20,664 INFO L87 Difference]: Start difference. First operand 636 states and 964 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 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) [2021-10-29 05:54:21,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:21,847 INFO L93 Difference]: Finished difference Result 2019 states and 3076 transitions. [2021-10-29 05:54:21,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-29 05:54:21,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 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) Word has length 28 [2021-10-29 05:54:21,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:21,858 INFO L225 Difference]: With dead ends: 2019 [2021-10-29 05:54:21,858 INFO L226 Difference]: Without dead ends: 1433 [2021-10-29 05:54:21,860 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2021-10-29 05:54:21,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2021-10-29 05:54:21,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 851. [2021-10-29 05:54:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 1.4388235294117646) internal successors, (1223), 850 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1223 transitions. [2021-10-29 05:54:21,914 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1223 transitions. Word has length 28 [2021-10-29 05:54:21,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:21,914 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 1223 transitions. [2021-10-29 05:54:21,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 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) [2021-10-29 05:54:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1223 transitions. [2021-10-29 05:54:21,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-29 05:54:21,919 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:21,919 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:21,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-29 05:54:22,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:54:22,132 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:22,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2075339537, now seen corresponding path program 1 times [2021-10-29 05:54:22,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:54:22,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703993531] [2021-10-29 05:54:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:22,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:54:22,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:54:22,135 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:54:22,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:54:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:22,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:54:22,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:22,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:22,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:54:22,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703993531] [2021-10-29 05:54:22,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703993531] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:22,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:22,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:54:22,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850383895] [2021-10-29 05:54:22,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:54:22,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:54:22,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:54:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:54:22,419 INFO L87 Difference]: Start difference. First operand 851 states and 1223 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 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) [2021-10-29 05:54:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:22,453 INFO L93 Difference]: Finished difference Result 1165 states and 1644 transitions. [2021-10-29 05:54:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:22,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 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 31 [2021-10-29 05:54:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:22,460 INFO L225 Difference]: With dead ends: 1165 [2021-10-29 05:54:22,461 INFO L226 Difference]: Without dead ends: 1069 [2021-10-29 05:54:22,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:54:22,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-10-29 05:54:22,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1027. [2021-10-29 05:54:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 1.4132553606237817) internal successors, (1450), 1026 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1450 transitions. [2021-10-29 05:54:22,510 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1450 transitions. Word has length 31 [2021-10-29 05:54:22,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:22,511 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1450 transitions. [2021-10-29 05:54:22,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 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) [2021-10-29 05:54:22,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1450 transitions. [2021-10-29 05:54:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-29 05:54:22,516 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:22,516 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:22,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:54:22,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:54:22,726 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:22,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:22,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1961462321, now seen corresponding path program 1 times [2021-10-29 05:54:22,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:54:22,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118711329] [2021-10-29 05:54:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:22,727 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:54:22,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:54:22,728 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:54:22,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:54:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:22,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:54:22,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:23,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:23,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:54:23,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118711329] [2021-10-29 05:54:23,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118711329] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:54:23,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1373268373] [2021-10-29 05:54:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:23,233 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:54:23,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:54:23,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:54:23,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-29 05:54:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:23,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:54:23,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:23,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:23,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1373268373] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:54:23,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571042780] [2021-10-29 05:54:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:23,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:54:23,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:54:23,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:54:23,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-29 05:54:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:23,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:54:23,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:24,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:24,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571042780] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:54:24,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 05:54:24,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 4, 4] total 14 [2021-10-29 05:54:24,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252435098] [2021-10-29 05:54:24,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 05:54:24,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:54:24,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 05:54:24,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-29 05:54:24,194 INFO L87 Difference]: Start difference. First operand 1027 states and 1450 transitions. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:26,143 INFO L93 Difference]: Finished difference Result 3999 states and 5739 transitions. [2021-10-29 05:54:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-29 05:54:26,143 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-29 05:54:26,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:26,160 INFO L225 Difference]: With dead ends: 3999 [2021-10-29 05:54:26,160 INFO L226 Difference]: Without dead ends: 2423 [2021-10-29 05:54:26,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=415, Invalid=991, Unknown=0, NotChecked=0, Total=1406 [2021-10-29 05:54:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2021-10-29 05:54:26,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 1527. [2021-10-29 05:54:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1526 states have (on average 1.3669724770642202) internal successors, (2086), 1526 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:26,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2086 transitions. [2021-10-29 05:54:26,252 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2086 transitions. Word has length 31 [2021-10-29 05:54:26,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:26,253 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 2086 transitions. [2021-10-29 05:54:26,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:54:26,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2086 transitions. [2021-10-29 05:54:26,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-29 05:54:26,256 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:26,257 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:26,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-29 05:54:26,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:54:26,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:54:26,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 05:54:26,872 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash 945650591, now seen corresponding path program 1 times [2021-10-29 05:54:26,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:54:26,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276112387] [2021-10-29 05:54:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:26,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:54:26,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:54:26,874 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:54:26,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 05:54:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:27,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-29 05:54:27,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 05:54:30,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 05:54:33,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:54:33,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276112387] [2021-10-29 05:54:33,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276112387] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:54:33,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [726321538] [2021-10-29 05:54:33,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:33,519 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:54:33,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:54:33,523 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:54:33,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-29 05:54:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:34,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-29 05:54:34,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 05:54:36,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 05:54:37,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [726321538] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:54:37,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903145136] [2021-10-29 05:54:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:37,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:54:37,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:54:37,639 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:54:37,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-29 05:54:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:38,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-29 05:54:38,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 05:54:40,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 05:54:40,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903145136] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:54:40,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 05:54:40,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20, 20, 20, 20] total 42 [2021-10-29 05:54:40,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80078366] [2021-10-29 05:54:40,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-29 05:54:40,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:54:40,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-29 05:54:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1533, Unknown=0, NotChecked=0, Total=1722 [2021-10-29 05:54:40,867 INFO L87 Difference]: Start difference. First operand 1527 states and 2086 transitions. Second operand has 42 states, 42 states have (on average 2.6666666666666665) internal successors, (112), 42 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:03,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:03,286 INFO L93 Difference]: Finished difference Result 3721 states and 5033 transitions. [2021-10-29 05:55:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-29 05:55:03,287 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.6666666666666665) internal successors, (112), 42 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-29 05:55:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:03,309 INFO L225 Difference]: With dead ends: 3721 [2021-10-29 05:55:03,309 INFO L226 Difference]: Without dead ends: 3573 [2021-10-29 05:55:03,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2385 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=3047, Invalid=9609, Unknown=0, NotChecked=0, Total=12656 [2021-10-29 05:55:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2021-10-29 05:55:03,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 1763. [2021-10-29 05:55:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.3717366628830874) internal successors, (2417), 1762 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2417 transitions. [2021-10-29 05:55:03,433 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2417 transitions. Word has length 51 [2021-10-29 05:55:03,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:03,434 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 2417 transitions. [2021-10-29 05:55:03,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.6666666666666665) internal successors, (112), 42 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2417 transitions. [2021-10-29 05:55:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-29 05:55:03,437 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:03,438 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:03,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:03,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-29 05:55:03,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:04,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 05:55:04,051 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:55:04,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:04,051 INFO L85 PathProgramCache]: Analyzing trace with hash -65466659, now seen corresponding path program 1 times [2021-10-29 05:55:04,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:55:04,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690194206] [2021-10-29 05:55:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:04,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:55:04,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:55:04,053 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:55:04,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-29 05:55:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:04,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:55:04,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:55:04,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:55:04,925 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:55:04,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690194206] [2021-10-29 05:55:04,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690194206] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:55:04,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [195632869] [2021-10-29 05:55:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:04,925 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:55:04,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:55:04,926 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:55:04,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-29 05:55:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:05,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:55:05,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:55:05,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:55:06,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [195632869] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:55:06,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525282074] [2021-10-29 05:55:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:06,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:06,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:06,043 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:55:06,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-29 05:55:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:06,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:55:06,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:55:06,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 05:55:07,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525282074] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:55:07,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 05:55:07,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8, 5, 5, 4] total 12 [2021-10-29 05:55:07,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749307057] [2021-10-29 05:55:07,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:55:07,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:55:07,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:55:07,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:55:07,091 INFO L87 Difference]: Start difference. First operand 1763 states and 2417 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:08,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:08,429 INFO L93 Difference]: Finished difference Result 3838 states and 5315 transitions. [2021-10-29 05:55:08,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-29 05:55:08,430 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-29 05:55:08,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:08,447 INFO L225 Difference]: With dead ends: 3838 [2021-10-29 05:55:08,447 INFO L226 Difference]: Without dead ends: 2137 [2021-10-29 05:55:08,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 301 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2021-10-29 05:55:08,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2021-10-29 05:55:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1809. [2021-10-29 05:55:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.2688053097345133) internal successors, (2294), 1808 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2294 transitions. [2021-10-29 05:55:08,543 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2294 transitions. Word has length 51 [2021-10-29 05:55:08,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:08,543 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2294 transitions. [2021-10-29 05:55:08,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:08,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2294 transitions. [2021-10-29 05:55:08,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-29 05:55:08,546 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:08,546 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:08,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:08,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:08,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:09,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 05:55:09,167 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:55:09,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:09,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1950719985, now seen corresponding path program 1 times [2021-10-29 05:55:09,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:55:09,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590480535] [2021-10-29 05:55:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:09,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:55:09,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:55:09,170 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:55:09,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-29 05:55:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:55:09,803 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:55:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:55:09,973 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:55:09,973 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:55:09,974 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:55:10,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:10,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:55:10,196 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:10,199 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:55:10,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:55:10 BoogieIcfgContainer [2021-10-29 05:55:10,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:55:10,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:55:10,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:55:10,275 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:55:10,276 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:54:14" (3/4) ... [2021-10-29 05:55:10,278 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:55:10,353 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:55:10,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:55:10,355 INFO L168 Benchmark]: Toolchain (without parser) took 56561.51 ms. Allocated memory was 81.8 MB in the beginning and 146.8 MB in the end (delta: 65.0 MB). Free memory was 46.8 MB in the beginning and 92.5 MB in the end (delta: -45.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:10,355 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory is still 63.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:55:10,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.57 ms. Allocated memory is still 81.8 MB. Free memory was 46.6 MB in the beginning and 63.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:10,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.30 ms. Allocated memory is still 81.8 MB. Free memory was 63.5 MB in the beginning and 61.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:10,357 INFO L168 Benchmark]: Boogie Preprocessor took 70.61 ms. Allocated memory is still 81.8 MB. Free memory was 61.7 MB in the beginning and 60.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:55:10,357 INFO L168 Benchmark]: RCFGBuilder took 572.32 ms. Allocated memory is still 81.8 MB. Free memory was 60.0 MB in the beginning and 46.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:10,358 INFO L168 Benchmark]: TraceAbstraction took 55380.37 ms. Allocated memory was 81.8 MB in the beginning and 146.8 MB in the end (delta: 65.0 MB). Free memory was 46.2 MB in the beginning and 98.8 MB in the end (delta: -52.6 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:10,358 INFO L168 Benchmark]: Witness Printer took 78.50 ms. Allocated memory is still 146.8 MB. Free memory was 98.8 MB in the beginning and 92.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:10,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory is still 63.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.57 ms. Allocated memory is still 81.8 MB. Free memory was 46.6 MB in the beginning and 63.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.30 ms. Allocated memory is still 81.8 MB. Free memory was 63.5 MB in the beginning and 61.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.61 ms. Allocated memory is still 81.8 MB. Free memory was 61.7 MB in the beginning and 60.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 572.32 ms. Allocated memory is still 81.8 MB. Free memory was 60.0 MB in the beginning and 46.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 55380.37 ms. Allocated memory was 81.8 MB in the beginning and 146.8 MB in the end (delta: 65.0 MB). Free memory was 46.2 MB in the beginning and 98.8 MB in the end (delta: -52.6 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.1 GB. * Witness Printer took 78.50 ms. Allocated memory is still 146.8 MB. Free memory was 98.8 MB in the beginning and 92.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L116] unsigned int a, b, r; [L118] a = __VERIFIER_nondet_uint() [L119] b = __VERIFIER_nondet_uint() [L34] unsigned char a0, a1, a2, a3; [L35] unsigned char b0, b1, b2, b3; [L36] unsigned char r0, r1, r2, r3; [L37] unsigned short carry; [L38] unsigned short partial_sum; [L39] unsigned int r; [L40] unsigned char i; [L41] unsigned char na, nb; [L42] a0 = a [L43] a1 = a >> 8 [L44] a2 = a >> 16U [L45] a3 = a >> 24U [L46] b0 = b [L47] b1 = b >> 8U [L48] b2 = b >> 16U [L49] b3 = b >> 24U [L50] na = (unsigned char)4 [L51] COND TRUE a3 == (unsigned char)0 [L52] na = na - 1 [L53] COND TRUE a2 == (unsigned char)0 [L54] na = na - 1 [L55] COND TRUE a1 == (unsigned char)0 [L56] na = na - 1 [L60] nb = (unsigned char)4 [L61] COND TRUE b3 == (unsigned char)0 [L62] nb = nb - 1 [L63] COND TRUE b2 == (unsigned char)0 [L64] nb = nb - 1 [L65] COND TRUE b1 == (unsigned char)0 [L66] nb = nb - 1 [L70] carry = (unsigned short)0 [L71] i = (unsigned char)0 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND TRUE i == (unsigned char)0 [L76] partial_sum = partial_sum + a0 [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND TRUE i < nb [L82] COND TRUE i == (unsigned char)0 [L82] partial_sum = partial_sum + b0 [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)254) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND TRUE i == (unsigned char)0 [L91] r0 = (unsigned char)partial_sum [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND FALSE !(i < na) [L81] COND FALSE !(i < nb) [L87] COND FALSE !(partial_sum > ((unsigned char)254)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND TRUE i == (unsigned char)1 [L92] r1 = (unsigned char)partial_sum [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L99] COND TRUE i < (unsigned char)4 [L100] COND FALSE !(i == (unsigned char)0) [L101] COND FALSE !(i == (unsigned char)1) [L102] COND TRUE i == (unsigned char)2 [L102] r2 = (unsigned char)0 [L103] COND FALSE !(i == (unsigned char)3) [L105] i = i + (unsigned char)1 [L99] COND TRUE i < (unsigned char)4 [L100] COND FALSE !(i == (unsigned char)0) [L101] COND FALSE !(i == (unsigned char)1) [L102] COND FALSE !(i == (unsigned char)2) [L103] COND TRUE i == (unsigned char)3 [L103] r3 = (unsigned char)0 [L105] i = i + (unsigned char)1 [L99] COND FALSE !(i < (unsigned char)4) [L108] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L110] return r; [L121] r = mp_add(a, b) [L16] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.1s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 912 SDtfs, 5991 SDslu, 6273 SDs, 0 SdLazy, 11572 SolverSat, 1002 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1218 GetRequests, 983 SyntacticMatches, 12 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 3075 ImplicationChecksByTransitivity, 17.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1809occurred in iteration=10, InterpolantAutomatonStates: 188, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 3928 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 16.4s InterpolantComputationTime, 602 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1064 ConstructedInterpolants, 22 QuantifiedInterpolants, 14976 SizeOfPredicates, 90 NumberOfNonLiveVariables, 1263 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 32 InterpolantComputations, 14 PerfectInterpolantSequences, 185/278 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:55:10,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a537e9c8-9fd3-440d-bc12-38790cf0b12f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...