./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/large_const.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/large_const.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs --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 8a29efc1cd20d7b6b63b545aee1e0a42be6fb6f9 ........................................................................................................................................................................................................................................................................................................................................................ 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_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/large_const.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs --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 8a29efc1cd20d7b6b63b545aee1e0a42be6fb6f9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:00:35,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:00:35,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:00:35,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:00:35,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:00:35,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:00:35,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:00:35,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:00:35,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:00:35,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:00:35,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:00:35,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:00:35,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:00:35,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:00:35,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:00:35,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:00:35,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:00:35,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:00:35,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:00:35,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:00:35,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:00:35,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:00:35,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:00:35,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:00:35,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:00:35,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:00:35,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:00:35,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:00:35,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:00:35,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:00:35,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:00:35,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:00:35,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:00:35,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:00:35,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:00:35,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:00:35,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:00:35,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:00:35,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:00:35,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:00:35,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:00:35,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:00:35,248 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:00:35,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:00:35,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:00:35,251 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:00:35,251 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:00:35,251 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:00:35,251 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:00:35,252 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:00:35,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:00:35,252 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:00:35,253 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:00:35,253 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:00:35,253 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:00:35,254 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:00:35,254 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:00:35,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:00:35,255 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:00:35,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:00:35,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:00:35,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:00:35,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:00:35,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:00:35,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:00:35,257 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:00:35,257 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:00:35,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:00:35,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:00:35,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:00:35,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:00:35,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:00:35,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:00:35,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:00:35,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:00:35,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:00:35,261 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:00:35,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:00:35,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:00:35,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:00:35,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:00:35,262 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_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a29efc1cd20d7b6b63b545aee1e0a42be6fb6f9 [2021-10-16 03:00:35,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:00:35,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:00:35,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:00:35,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:00:35,613 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:00:35,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-invgen/large_const.i [2021-10-16 03:00:35,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/data/07cdd7194/ac6a5f9d87d142d6aac7784f592fcbdd/FLAG8fd78f04c [2021-10-16 03:00:36,292 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:00:36,293 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/sv-benchmarks/c/loop-invgen/large_const.i [2021-10-16 03:00:36,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/data/07cdd7194/ac6a5f9d87d142d6aac7784f592fcbdd/FLAG8fd78f04c [2021-10-16 03:00:36,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/data/07cdd7194/ac6a5f9d87d142d6aac7784f592fcbdd [2021-10-16 03:00:36,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:00:36,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:00:36,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:00:36,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:00:36,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:00:36,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:36,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef60057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36, skipping insertion in model container [2021-10-16 03:00:36,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:36,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:00:36,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:00:36,909 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_201504cc-a1d4-4f96-846d-f8400814ea84/sv-benchmarks/c/loop-invgen/large_const.i[893,906] [2021-10-16 03:00:36,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:00:36,938 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:00:36,954 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_201504cc-a1d4-4f96-846d-f8400814ea84/sv-benchmarks/c/loop-invgen/large_const.i[893,906] [2021-10-16 03:00:36,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:00:36,979 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:00:36,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36 WrapperNode [2021-10-16 03:00:36,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:00:36,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:00:36,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:00:36,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:00:36,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:37,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:37,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:00:37,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:00:37,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:00:37,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:00:37,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:37,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:37,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:37,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:37,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:37,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:37,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:37,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:00:37,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:00:37,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:00:37,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:00:37,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (1/1) ... [2021-10-16 03:00:37,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:00:37,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:37,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:00:37,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:00:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:00:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:00:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:00:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:00:37,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:00:37,511 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-16 03:00:37,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:00:37 BoogieIcfgContainer [2021-10-16 03:00:37,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:00:37,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:00:37,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:00:37,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:00:37,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:00:36" (1/3) ... [2021-10-16 03:00:37,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4b0fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:00:37, skipping insertion in model container [2021-10-16 03:00:37,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:36" (2/3) ... [2021-10-16 03:00:37,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4b0fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:00:37, skipping insertion in model container [2021-10-16 03:00:37,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:00:37" (3/3) ... [2021-10-16 03:00:37,544 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2021-10-16 03:00:37,550 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:00:37,551 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:00:37,661 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:00:37,688 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:00:37,688 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:00:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:00:37,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:37,717 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:00:37,718 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:37,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1566692524, now seen corresponding path program 1 times [2021-10-16 03:00:37,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:00:37,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418527458] [2021-10-16 03:00:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:37,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:00:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:37,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:00:37,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418527458] [2021-10-16 03:00:37,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418527458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:00:37,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:00:37,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:00:37,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014004664] [2021-10-16 03:00:37,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:00:37,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:00:38,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:00:38,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:00:38,063 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-16 03:00:38,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:38,177 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2021-10-16 03:00:38,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:00:38,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 03:00:38,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:38,189 INFO L225 Difference]: With dead ends: 22 [2021-10-16 03:00:38,190 INFO L226 Difference]: Without dead ends: 10 [2021-10-16 03:00:38,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:00:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-16 03:00:38,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-16 03:00:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-16 03:00:38,234 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-10-16 03:00:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:38,235 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-16 03:00:38,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-16 03:00:38,236 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-16 03:00:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:00:38,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:38,237 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:38,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:00:38,238 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:38,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:38,245 INFO L82 PathProgramCache]: Analyzing trace with hash 508339981, now seen corresponding path program 1 times [2021-10-16 03:00:38,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:00:38,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086093948] [2021-10-16 03:00:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:38,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:00:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:38,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:00:38,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086093948] [2021-10-16 03:00:38,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086093948] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:00:38,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640785094] [2021-10-16 03:00:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:38,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:38,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:38,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:38,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:00:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:38,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:00:38,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:39,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:39,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640785094] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:39,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1674704419] [2021-10-16 03:00:39,354 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-16 03:00:39,354 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:00:39,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:00:39,372 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:00:39,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:00:39,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:39,426 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:00:39,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:39,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 03:00:39,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:00:39,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:39,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 03:00:39,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-16 03:00:39,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:00:39,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:00:39,519 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 03:00:39,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-16 03:00:39,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:39,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 03:00:39,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:39,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 03:00:39,533 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:00:39,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:00:39,603 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:39,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:00:39,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-10-16 03:00:39,609 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:00:39,610 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:121, output treesize:109 [2021-10-16 03:00:39,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:39,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:39,834 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_8| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:00:39,839 INFO L168 Benchmark]: Toolchain (without parser) took 3186.54 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 48.8 MB in the beginning and 65.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:39,840 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 65.4 MB in the beginning and 65.3 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:00:39,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.45 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 48.5 MB in the beginning and 90.5 MB in the end (delta: -42.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:39,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.02 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 89.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:00:39,843 INFO L168 Benchmark]: Boogie Preprocessor took 28.55 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 87.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:39,843 INFO L168 Benchmark]: RCFGBuilder took 457.65 ms. Allocated memory is still 115.3 MB. Free memory was 87.9 MB in the beginning and 76.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:39,844 INFO L168 Benchmark]: TraceAbstraction took 2321.08 ms. Allocated memory is still 115.3 MB. Free memory was 75.6 MB in the beginning and 65.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:39,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 65.4 MB in the beginning and 65.3 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.45 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 48.5 MB in the beginning and 90.5 MB in the end (delta: -42.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.02 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 89.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.55 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 87.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 457.65 ms. Allocated memory is still 115.3 MB. Free memory was 87.9 MB in the beginning and 76.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2321.08 ms. Allocated memory is still 115.3 MB. Free memory was 75.6 MB in the beginning and 65.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:00:39,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:00:42,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:00:42,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:00:42,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:00:42,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:00:42,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:00:43,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:00:43,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:00:43,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:00:43,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:00:43,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:00:43,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:00:43,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:00:43,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:00:43,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:00:43,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:00:43,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:00:43,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:00:43,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:00:43,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:00:43,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:00:43,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:00:43,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:00:43,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:00:43,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:00:43,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:00:43,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:00:43,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:00:43,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:00:43,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:00:43,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:00:43,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:00:43,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:00:43,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:00:43,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:00:43,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:00:43,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:00:43,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:00:43,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:00:43,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:00:43,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:00:43,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:00:43,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:00:43,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:00:43,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:00:43,166 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:00:43,166 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:00:43,166 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:00:43,167 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:00:43,167 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:00:43,168 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:00:43,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:00:43,171 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:00:43,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:00:43,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:00:43,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:00:43,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:00:43,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:00:43,173 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:00:43,173 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:00:43,173 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:00:43,173 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:00:43,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:00:43,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:00:43,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:00:43,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:00:43,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:00:43,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:00:43,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:00:43,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:00:43,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:00:43,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:00:43,176 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:00:43,176 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:43,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:00:43,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:00:43,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:00:43,178 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_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a29efc1cd20d7b6b63b545aee1e0a42be6fb6f9 [2021-10-16 03:00:43,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:00:43,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:00:43,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:00:43,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:00:43,685 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:00:43,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-invgen/large_const.i [2021-10-16 03:00:43,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/data/fd2cc4274/478fdd5c52a8470dafdc261826e564be/FLAG715b3e541 [2021-10-16 03:00:44,464 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:00:44,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/sv-benchmarks/c/loop-invgen/large_const.i [2021-10-16 03:00:44,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/data/fd2cc4274/478fdd5c52a8470dafdc261826e564be/FLAG715b3e541 [2021-10-16 03:00:44,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/data/fd2cc4274/478fdd5c52a8470dafdc261826e564be [2021-10-16 03:00:44,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:00:44,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:00:44,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:00:44,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:00:44,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:00:44,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:00:44" (1/1) ... [2021-10-16 03:00:44,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f24b222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:44, skipping insertion in model container [2021-10-16 03:00:44,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:00:44" (1/1) ... [2021-10-16 03:00:44,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:00:44,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:00:45,043 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_201504cc-a1d4-4f96-846d-f8400814ea84/sv-benchmarks/c/loop-invgen/large_const.i[893,906] [2021-10-16 03:00:45,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:00:45,073 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:00:45,084 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_201504cc-a1d4-4f96-846d-f8400814ea84/sv-benchmarks/c/loop-invgen/large_const.i[893,906] [2021-10-16 03:00:45,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:00:45,131 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:00:45,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45 WrapperNode [2021-10-16 03:00:45,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:00:45,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:00:45,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:00:45,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:00:45,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:00:45,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:00:45,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:00:45,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:00:45,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:00:45,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:00:45,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:00:45,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:00:45,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (1/1) ... [2021-10-16 03:00:45,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:00:45,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:45,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:00:45,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:00:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:00:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:00:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:00:45,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:00:45,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:00:45,730 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-16 03:00:45,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:00:45 BoogieIcfgContainer [2021-10-16 03:00:45,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:00:45,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:00:45,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:00:45,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:00:45,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:00:44" (1/3) ... [2021-10-16 03:00:45,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56df96a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:00:45, skipping insertion in model container [2021-10-16 03:00:45,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:45" (2/3) ... [2021-10-16 03:00:45,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56df96a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:00:45, skipping insertion in model container [2021-10-16 03:00:45,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:00:45" (3/3) ... [2021-10-16 03:00:45,758 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2021-10-16 03:00:45,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:00:45,780 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:00:45,893 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:00:45,902 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:00:45,902 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:00:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:00:45,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:45,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:45,927 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:45,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:45,935 INFO L82 PathProgramCache]: Analyzing trace with hash 200473929, now seen corresponding path program 1 times [2021-10-16 03:00:45,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:45,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955302119] [2021-10-16 03:00:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:45,952 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:45,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:45,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:45,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:00:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:46,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 03:00:46,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:46,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:46,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:46,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955302119] [2021-10-16 03:00:46,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955302119] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:00:46,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:00:46,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:00:46,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407076531] [2021-10-16 03:00:46,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:00:46,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:00:46,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:00:46,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:00:46,277 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:46,296 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-10-16 03:00:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:00:46,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 03:00:46,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:46,310 INFO L225 Difference]: With dead ends: 27 [2021-10-16 03:00:46,310 INFO L226 Difference]: Without dead ends: 13 [2021-10-16 03:00:46,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:00:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-16 03:00:46,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-16 03:00:46,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-10-16 03:00:46,353 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2021-10-16 03:00:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:46,367 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-10-16 03:00:46,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-10-16 03:00:46,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:00:46,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:46,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:46,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:46,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:00:46,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:46,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:46,588 INFO L82 PathProgramCache]: Analyzing trace with hash 182003509, now seen corresponding path program 1 times [2021-10-16 03:00:46,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:46,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944988789] [2021-10-16 03:00:46,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:46,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:46,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:46,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:46,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:00:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:46,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:00:46,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:46,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:46,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:46,918 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:46,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944988789] [2021-10-16 03:00:46,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944988789] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:00:46,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:00:46,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 03:00:46,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620964977] [2021-10-16 03:00:46,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:00:46,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:00:46,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:00:46,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:00:46,924 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-10-16 03:00:47,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:47,023 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-16 03:00:47,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:00:47,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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 8 [2021-10-16 03:00:47,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:47,026 INFO L225 Difference]: With dead ends: 21 [2021-10-16 03:00:47,026 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 03:00:47,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:00:47,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 03:00:47,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 03:00:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) [2021-10-16 03:00:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-16 03:00:47,032 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2021-10-16 03:00:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:47,033 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-16 03:00:47,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-10-16 03:00:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-16 03:00:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:00:47,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:47,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:47,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:47,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:00:47,254 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:47,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:47,255 INFO L82 PathProgramCache]: Analyzing trace with hash -52175062, now seen corresponding path program 1 times [2021-10-16 03:00:47,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:47,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139558078] [2021-10-16 03:00:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:47,256 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:47,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:47,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:47,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:00:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:47,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:00:47,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:47,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:47,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:47,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139558078] [2021-10-16 03:00:47,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139558078] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:47,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1980886844] [2021-10-16 03:00:47,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:47,647 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:47,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:00:47,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:00:47,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 03:00:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:47,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:00:47,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:47,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:47,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1980886844] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:47,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515762681] [2021-10-16 03:00:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:47,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:47,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:47,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:47,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 03:00:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:48,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:00:48,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:48,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:48,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515762681] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:48,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:00:48,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-10-16 03:00:48,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070597092] [2021-10-16 03:00:48,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 03:00:48,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:00:48,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 03:00:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:00:48,208 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:48,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:48,712 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2021-10-16 03:00:48,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 03:00:48,713 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 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 11 [2021-10-16 03:00:48,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:48,715 INFO L225 Difference]: With dead ends: 51 [2021-10-16 03:00:48,715 INFO L226 Difference]: Without dead ends: 49 [2021-10-16 03:00:48,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 345.6ms TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-10-16 03:00:48,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-16 03:00:48,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2021-10-16 03:00:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-10-16 03:00:48,732 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 11 [2021-10-16 03:00:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:48,734 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-10-16 03:00:48,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-10-16 03:00:48,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 03:00:48,738 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:48,738 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:48,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:48,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:49,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 03:00:49,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:00:49,342 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:49,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:49,343 INFO L82 PathProgramCache]: Analyzing trace with hash 566429229, now seen corresponding path program 1 times [2021-10-16 03:00:49,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:49,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213695181] [2021-10-16 03:00:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:49,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:49,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:49,345 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:49,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:00:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:49,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:00:49,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:49,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:49,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:49,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213695181] [2021-10-16 03:00:49,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213695181] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:49,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [304098420] [2021-10-16 03:00:49,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:49,676 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:49,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:00:49,678 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:00:49,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 03:00:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:49,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:00:49,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:49,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:50,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [304098420] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:50,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114349146] [2021-10-16 03:00:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:50,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:50,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:50,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:50,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 03:00:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:50,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:00:50,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:50,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:50,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:50,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114349146] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:50,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:00:50,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 7, 7] total 12 [2021-10-16 03:00:50,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047342370] [2021-10-16 03:00:50,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 03:00:50,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:00:50,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 03:00:50,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-16 03:00:50,399 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:50,971 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2021-10-16 03:00:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 03:00:50,972 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-16 03:00:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:50,974 INFO L225 Difference]: With dead ends: 74 [2021-10-16 03:00:50,974 INFO L226 Difference]: Without dead ends: 72 [2021-10-16 03:00:50,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 435.2ms TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2021-10-16 03:00:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-16 03:00:50,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 39. [2021-10-16 03:00:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-10-16 03:00:51,004 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 12 [2021-10-16 03:00:51,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:51,005 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-10-16 03:00:51,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-10-16 03:00:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 03:00:51,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:51,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:51,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:51,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:51,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:51,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:51,621 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:51,622 INFO L82 PathProgramCache]: Analyzing trace with hash 623687531, now seen corresponding path program 1 times [2021-10-16 03:00:51,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:51,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617160962] [2021-10-16 03:00:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:51,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:51,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:51,635 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:51,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 03:00:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:51,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:00:51,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:51,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:51,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:51,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617160962] [2021-10-16 03:00:51,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617160962] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:51,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1617770262] [2021-10-16 03:00:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:51,976 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:51,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:00:51,982 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:00:52,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 03:00:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:52,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:00:52,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:52,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:52,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1617770262] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:52,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536905999] [2021-10-16 03:00:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:52,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:52,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:52,319 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:52,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 03:00:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:52,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:00:52,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:52,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:52,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536905999] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:52,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:00:52,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-10-16 03:00:52,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290142235] [2021-10-16 03:00:52,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 03:00:52,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:00:52,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 03:00:52,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:00:52,654 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) [2021-10-16 03:00:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:53,099 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2021-10-16 03:00:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 03:00:53,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 12 [2021-10-16 03:00:53,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:53,102 INFO L225 Difference]: With dead ends: 74 [2021-10-16 03:00:53,102 INFO L226 Difference]: Without dead ends: 72 [2021-10-16 03:00:53,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 320.3ms TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-10-16 03:00:53,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-16 03:00:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 47. [2021-10-16 03:00:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.5) internal successors, (69), 46 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 69 transitions. [2021-10-16 03:00:53,115 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 69 transitions. Word has length 12 [2021-10-16 03:00:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:53,116 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 69 transitions. [2021-10-16 03:00:53,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) [2021-10-16 03:00:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 69 transitions. [2021-10-16 03:00:53,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 03:00:53,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:53,117 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:53,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:53,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:53,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:53,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:53,741 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:53,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:53,741 INFO L82 PathProgramCache]: Analyzing trace with hash 521583522, now seen corresponding path program 1 times [2021-10-16 03:00:53,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:53,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571488025] [2021-10-16 03:00:53,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:53,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:53,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:53,744 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:53,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 03:00:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:53,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:00:53,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:54,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:54,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:54,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571488025] [2021-10-16 03:00:54,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571488025] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:00:54,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:00:54,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-16 03:00:54,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273385347] [2021-10-16 03:00:54,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:00:54,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:00:54,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:00:54,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:00:54,188 INFO L87 Difference]: Start difference. First operand 47 states and 69 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:54,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:54,214 INFO L93 Difference]: Finished difference Result 54 states and 76 transitions. [2021-10-16 03:00:54,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:00:54,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-10-16 03:00:54,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:54,221 INFO L225 Difference]: With dead ends: 54 [2021-10-16 03:00:54,221 INFO L226 Difference]: Without dead ends: 21 [2021-10-16 03:00:54,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 87.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:00:54,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-16 03:00:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-16 03:00:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-16 03:00:54,228 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-10-16 03:00:54,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:54,229 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-16 03:00:54,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:54,229 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-16 03:00:54,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 03:00:54,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:54,230 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:54,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:54,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:00:54,444 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:54,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1453371626, now seen corresponding path program 1 times [2021-10-16 03:00:54,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:54,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125473484] [2021-10-16 03:00:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:54,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:54,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:54,450 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:54,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 03:00:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:54,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:00:54,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:00:54,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:00:54,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:54,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125473484] [2021-10-16 03:00:54,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125473484] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:54,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1373191580] [2021-10-16 03:00:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:54,921 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:54,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:00:54,922 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:00:54,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-16 03:00:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:55,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:00:55,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:00:55,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:00:55,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1373191580] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:55,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798380805] [2021-10-16 03:00:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:55,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:55,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:55,478 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:55,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-16 03:00:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:55,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:00:55,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:00:55,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:00:55,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798380805] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:55,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:00:55,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6, 5, 6, 5] total 14 [2021-10-16 03:00:55,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656603911] [2021-10-16 03:00:55,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 03:00:55,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:00:55,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 03:00:55,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-16 03:00:55,882 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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) [2021-10-16 03:00:55,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:55,939 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-16 03:00:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:00:55,940 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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 17 [2021-10-16 03:00:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:55,940 INFO L225 Difference]: With dead ends: 19 [2021-10-16 03:00:55,940 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:00:55,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 176.3ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-16 03:00:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:00:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:00:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:00:55,942 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-16 03:00:55,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:55,942 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:00:55,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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) [2021-10-16 03:00:55,942 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:00:55,942 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:00:55,944 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:00:55,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:56,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:56,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-16 03:00:56,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:56,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:00:56,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:00:56,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:00:56,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:00:56,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:00:57,445 INFO L857 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-10-16 03:00:57,446 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-16 03:00:57,446 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 43) no Hoare annotation was computed. [2021-10-16 03:00:57,446 INFO L853 garLoopResultBuilder]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~c1~0 (_ bv4000 32))) (.cse1 (= ULTIMATE.start_main_~c2~0 (_ bv2000 32))) (.cse2 (= (_ bv10000 32) ULTIMATE.start_main_~c3~0))) (or (and .cse0 (= ULTIMATE.start_main_~i~0 (_ bv0 32)) (= ULTIMATE.start_main_~k~0 (_ bv0 32)) .cse1 (bvsle (_ bv0 32) ULTIMATE.start_main_~n~0) (bvslt ULTIMATE.start_main_~n~0 (_ bv10 32)) .cse2) (and (bvslt ULTIMATE.start_main_~n~0 (_ bv2 32)) (let ((.cse3 (not (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 .cse1 .cse3 .cse2 (= ULTIMATE.start_main_~k~0 (_ bv4000 32))) (and (= (_ bv10000 32) ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse3 .cse2) (and .cse0 .cse1 .cse3 .cse2 (= ULTIMATE.start_main_~k~0 (_ bv2000 32))))) (bvslt (_ bv0 32) ULTIMATE.start_main_~n~0)))) [2021-10-16 03:00:57,446 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:00:57,446 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:00:57,447 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:00:57,447 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 03:00:57,447 INFO L857 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2021-10-16 03:00:57,447 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:00:57,447 INFO L853 garLoopResultBuilder]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse2 (bvslt ULTIMATE.start_main_~n~0 (_ bv2 32))) (.cse5 (not (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0))) (.cse3 (= ULTIMATE.start_main_~c1~0 (_ bv4000 32))) (.cse4 (= ULTIMATE.start_main_~c2~0 (_ bv2000 32))) (.cse6 (= (_ bv10000 32) ULTIMATE.start_main_~c3~0)) (.cse1 (= ULTIMATE.start_main_~j~0 (_ bv0 32))) (.cse0 (bvslt (_ bv0 32) ULTIMATE.start_main_~n~0))) (or (and (= ULTIMATE.start_main_~i~0 (_ bv0 32)) (not .cse0) (bvsle (_ bv0 32) ULTIMATE.start_main_~n~0) .cse1) (and (= ULTIMATE.start_main_~j~0 (_ bv1 32)) .cse2 .cse3 .cse4 .cse5 .cse6 (bvsgt ULTIMATE.start_main_~k~0 (_ bv0 32)) .cse0) (and .cse2 .cse5 (or (and .cse6 (or (and .cse3 .cse4 (= ULTIMATE.start_main_~k~0 (_ bv2000 32))) (and .cse3 .cse4 (= ULTIMATE.start_main_~k~0 (_ bv4000 32))))) (and (= (_ bv10000 32) ULTIMATE.start_main_~k~0) .cse3 .cse4 .cse6)) .cse1 .cse0))) [2021-10-16 03:00:57,447 INFO L857 garLoopResultBuilder]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2021-10-16 03:00:57,447 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2021-10-16 03:00:57,448 INFO L857 garLoopResultBuilder]: For program point L34-2(lines 34 44) no Hoare annotation was computed. [2021-10-16 03:00:57,448 INFO L860 garLoopResultBuilder]: At program point L51(lines 24 52) the Hoare annotation is: true [2021-10-16 03:00:57,448 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-16 03:00:57,448 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (bvslt ULTIMATE.start_main_~n~0 (_ bv2 32)) (let ((.cse1 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse0 (= ULTIMATE.start_main_~c1~0 (_ bv4000 32))) (.cse2 (= ULTIMATE.start_main_~c2~0 (_ bv2000 32))) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse3 (= (_ bv10000 32) ULTIMATE.start_main_~c3~0))) (or (and (= (_ bv10000 32) ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and (or (and .cse0 .cse1 .cse2 .cse4 (= ULTIMATE.start_main_~k~0 (_ bv2000 32))) (and .cse0 .cse2 (= ULTIMATE.start_main_~k~0 (_ bv4000 32)) .cse4)) .cse3))) (not (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)) (= ULTIMATE.start_main_~j~0 (_ bv0 32)) (bvslt (_ bv0 32) ULTIMATE.start_main_~n~0)) [2021-10-16 03:00:57,453 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:00:57,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:00:57 BoogieIcfgContainer [2021-10-16 03:00:57,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:00:57,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:00:57,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:00:57,502 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:00:57,503 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:00:45" (3/4) ... [2021-10-16 03:00:57,506 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:00:57,520 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-16 03:00:57,523 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 03:00:57,523 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 03:00:57,529 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:00:57,604 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:00:57,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:00:57,607 INFO L168 Benchmark]: Toolchain (without parser) took 12807.30 ms. Allocated memory was 52.4 MB in the beginning and 100.7 MB in the end (delta: 48.2 MB). Free memory was 28.6 MB in the beginning and 79.0 MB in the end (delta: -50.4 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:57,607 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory was 33.2 MB in the beginning and 33.2 MB in the end (delta: 24.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:00:57,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.52 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 28.5 MB in the beginning and 52.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:57,610 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.46 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 50.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:00:57,611 INFO L168 Benchmark]: Boogie Preprocessor took 31.26 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 49.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:00:57,611 INFO L168 Benchmark]: RCFGBuilder took 505.87 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 39.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:57,612 INFO L168 Benchmark]: TraceAbstraction took 11753.05 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 39.1 MB in the beginning and 33.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:57,612 INFO L168 Benchmark]: Witness Printer took 102.92 ms. Allocated memory is still 100.7 MB. Free memory was 33.4 MB in the beginning and 79.0 MB in the end (delta: -45.7 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:00:57,616 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory was 33.2 MB in the beginning and 33.2 MB in the end (delta: 24.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.52 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 28.5 MB in the beginning and 52.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.46 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 50.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.26 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 49.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 505.87 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 39.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11753.05 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 39.1 MB in the beginning and 33.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. * Witness Printer took 102.92 ms. Allocated memory is still 100.7 MB. Free memory was 33.4 MB in the beginning and 79.0 MB in the end (delta: -45.7 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11562.1ms, OverallIterations: 7, TraceHistogramMax: 3, EmptinessCheckTime: 20.2ms, AutomataDifference: 1806.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 899.1ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 112 SDtfs, 250 SDslu, 302 SDs, 0 SdLazy, 357 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 598.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 381 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1498.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 91.6ms AutomataMinimizationTime, 7 MinimizatonAttempts, 79 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 247 HoareAnnotationTreeSize, 4 FomulaSimplifications, 1507 FormulaSimplificationTreeSizeReduction, 248.8ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 196 FormulaSimplificationTreeSizeReductionInter, 642.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 155.7ms SsaConstructionTime, 387.3ms SatisfiabilityAnalysisTime, 3300.1ms InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 344 ConstructedInterpolants, 0 QuantifiedInterpolants, 1266 SizeOfPredicates, 44 NumberOfNonLiveVariables, 696 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 50/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((~bvslt32(n, 2bv32) && ((((((10000bv32 == k && c1 == 4000bv32) && !(cond == 0bv32)) && c2 == 2000bv32) && 10000bv32 == c3) && cond == 1bv32) || ((((((c1 == 4000bv32 && !(cond == 0bv32)) && c2 == 2000bv32) && cond == 1bv32) && k == 2000bv32) || (((c1 == 4000bv32 && c2 == 2000bv32) && k == 4000bv32) && cond == 1bv32)) && 10000bv32 == c3))) && !~bvslt32(i, n)) && j == 0bv32) && ~bvslt32(0bv32, n) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((c1 == 4000bv32 && i == 0bv32) && k == 0bv32) && c2 == 2000bv32) && ~bvsle32(0bv32, n)) && ~bvslt32(n, 10bv32)) && 10000bv32 == c3) || ((~bvslt32(n, 2bv32) && ((((((c1 == 4000bv32 && c2 == 2000bv32) && !~bvslt32(i, n)) && 10000bv32 == c3) && k == 4000bv32) || ((((10000bv32 == k && c1 == 4000bv32) && c2 == 2000bv32) && !~bvslt32(i, n)) && 10000bv32 == c3)) || ((((c1 == 4000bv32 && c2 == 2000bv32) && !~bvslt32(i, n)) && 10000bv32 == c3) && k == 2000bv32))) && ~bvslt32(0bv32, n)) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((i == 0bv32 && !~bvslt32(0bv32, n)) && ~bvsle32(0bv32, n)) && j == 0bv32) || (((((((j == 1bv32 && ~bvslt32(n, 2bv32)) && c1 == 4000bv32) && c2 == 2000bv32) && !~bvslt32(i, n)) && 10000bv32 == c3) && ~bvsgt32(k, 0bv32)) && ~bvslt32(0bv32, n))) || ((((~bvslt32(n, 2bv32) && !~bvslt32(i, n)) && ((10000bv32 == c3 && (((c1 == 4000bv32 && c2 == 2000bv32) && k == 2000bv32) || ((c1 == 4000bv32 && c2 == 2000bv32) && k == 4000bv32))) || (((10000bv32 == k && c1 == 4000bv32) && c2 == 2000bv32) && 10000bv32 == c3))) && j == 0bv32) && ~bvslt32(0bv32, n)) RESULT: Ultimate proved your program to be correct! [2021-10-16 03:00:57,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201504cc-a1d4-4f96-846d-f8400814ea84/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...