./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/shared_mem2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/shared_mem2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7852fa616656cf29d8d53332cfc28f5a43f0ad1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/shared_mem2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7852fa616656cf29d8d53332cfc28f5a43f0ad1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:44:15,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:44:15,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:44:15,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:44:15,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:44:15,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:44:15,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:44:15,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:44:15,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:44:15,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:44:15,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:44:15,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:44:15,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:44:16,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:44:16,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:44:16,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:44:16,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:44:16,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:44:16,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:44:16,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:44:16,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:44:16,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:44:16,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:44:16,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:44:16,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:44:16,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:44:16,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:44:16,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:44:16,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:44:16,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:44:16,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:44:16,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:44:16,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:44:16,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:44:16,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:44:16,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:44:16,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:44:16,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:44:16,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:44:16,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:44:16,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:44:16,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:44:16,100 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:44:16,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:44:16,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:44:16,102 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:44:16,102 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:44:16,102 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:44:16,103 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:44:16,103 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:44:16,103 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:44:16,103 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:44:16,104 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:44:16,105 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:44:16,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:44:16,105 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:44:16,106 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:44:16,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:44:16,107 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:44:16,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:44:16,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:44:16,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:44:16,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:44:16,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:44:16,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:44:16,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:44:16,109 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:44:16,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:44:16,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:44:16,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:44:16,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:44:16,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:44:16,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:16,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:44:16,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:44:16,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:44:16,113 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:44:16,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:44:16,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:44:16,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:44:16,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:44:16,114 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_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7852fa616656cf29d8d53332cfc28f5a43f0ad1 [2021-10-13 06:44:16,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:44:16,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:44:16,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:44:16,452 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:44:16,453 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:44:16,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/heap-data/shared_mem2.i [2021-10-13 06:44:16,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/data/5d462c6c8/0ee68697cdaa47dcbb8370764691d8f2/FLAGb5530b59f [2021-10-13 06:44:17,075 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:44:17,075 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/sv-benchmarks/c/heap-data/shared_mem2.i [2021-10-13 06:44:17,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/data/5d462c6c8/0ee68697cdaa47dcbb8370764691d8f2/FLAGb5530b59f [2021-10-13 06:44:17,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/data/5d462c6c8/0ee68697cdaa47dcbb8370764691d8f2 [2021-10-13 06:44:17,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:44:17,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:44:17,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:17,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:44:17,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:44:17,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:17,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35fb8fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17, skipping insertion in model container [2021-10-13 06:44:17,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:17,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:44:17,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:44:17,779 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_10b22e37-55e6-47ac-9084-059a7bd689c8/sv-benchmarks/c/heap-data/shared_mem2.i[23827,23840] [2021-10-13 06:44:17,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:17,795 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:44:17,872 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_10b22e37-55e6-47ac-9084-059a7bd689c8/sv-benchmarks/c/heap-data/shared_mem2.i[23827,23840] [2021-10-13 06:44:17,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:17,916 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:44:17,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17 WrapperNode [2021-10-13 06:44:17,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:17,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:17,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:44:17,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:44:17,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:17,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:17,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:17,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:44:17,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:44:17,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:44:17,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:17,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:17,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:17,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:17,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:18,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:18,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:18,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:44:18,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:44:18,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:44:18,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:44:18,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (1/1) ... [2021-10-13 06:44:18,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:18,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:18,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:44:18,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:44:18,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 06:44:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 06:44:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 06:44:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 06:44:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:44:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 06:44:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:44:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:44:18,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:44:18,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:44:18,584 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 06:44:18,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:18 BoogieIcfgContainer [2021-10-13 06:44:18,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:44:18,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:44:18,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:44:18,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:44:18,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:44:17" (1/3) ... [2021-10-13 06:44:18,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccd20e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:18, skipping insertion in model container [2021-10-13 06:44:18,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:17" (2/3) ... [2021-10-13 06:44:18,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccd20e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:18, skipping insertion in model container [2021-10-13 06:44:18,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:18" (3/3) ... [2021-10-13 06:44:18,596 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem2.i [2021-10-13 06:44:18,602 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:44:18,602 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:44:18,699 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:44:18,708 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:44:18,709 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:44:18,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:18,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 06:44:18,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:18,734 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:18,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:18,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:18,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1277433734, now seen corresponding path program 1 times [2021-10-13 06:44:18,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:18,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734732873] [2021-10-13 06:44:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:18,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:18,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:18,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734732873] [2021-10-13 06:44:18,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734732873] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:18,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:18,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:44:18,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339042061] [2021-10-13 06:44:18,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:44:18,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:18,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:44:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:44:18,970 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:18,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:18,984 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-10-13 06:44:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:44:18,986 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 06:44:18,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:18,994 INFO L225 Difference]: With dead ends: 21 [2021-10-13 06:44:18,994 INFO L226 Difference]: Without dead ends: 10 [2021-10-13 06:44:18,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:44:19,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-13 06:44:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 06:44:19,025 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) [2021-10-13 06:44:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-13 06:44:19,028 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2021-10-13 06:44:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:19,028 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-13 06:44:19,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-13 06:44:19,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 06:44:19,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:19,030 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:19,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:44:19,031 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:19,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:19,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1240778891, now seen corresponding path program 1 times [2021-10-13 06:44:19,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:19,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122859691] [2021-10-13 06:44:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:19,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:19,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:19,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122859691] [2021-10-13 06:44:19,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122859691] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:19,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:19,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:44:19,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109931438] [2021-10-13 06:44:19,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:44:19,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:19,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:44:19,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:19,160 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:19,221 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-13 06:44:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:19,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 06:44:19,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:19,222 INFO L225 Difference]: With dead ends: 19 [2021-10-13 06:44:19,222 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 06:44:19,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 06:44:19,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-13 06:44:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-13 06:44:19,228 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2021-10-13 06:44:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:19,228 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-13 06:44:19,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-13 06:44:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 06:44:19,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:19,230 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:19,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:44:19,230 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:19,231 INFO L82 PathProgramCache]: Analyzing trace with hash -826033172, now seen corresponding path program 1 times [2021-10-13 06:44:19,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:19,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698735283] [2021-10-13 06:44:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:19,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:19,566 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:19,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698735283] [2021-10-13 06:44:19,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698735283] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:44:19,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819581313] [2021-10-13 06:44:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:19,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:19,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:19,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:19,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:44:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:19,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 06:44:19,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:19,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 231 [2021-10-13 06:44:19,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:19,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:44:19,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:19,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:44:19,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:19,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:19,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2021-10-13 06:44:19,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:19,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-10-13 06:44:20,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:20,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:44:20,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:20,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:44:20,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 36 [2021-10-13 06:44:20,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2021-10-13 06:44:20,428 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-10-13 06:44:20,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 27 [2021-10-13 06:44:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:20,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:20,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:20,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:44:20,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:20,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:44:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:21,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819581313] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:21,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [603428007] [2021-10-13 06:44:21,058 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-13 06:44:21,059 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 06:44:21,063 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 06:44:21,069 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 06:44:21,069 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 06:44:21,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,103 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 06:44:21,105 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,105 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,106 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-13 06:44:21,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-13 06:44:21,108 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,110 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-13 06:44:21,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-13 06:44:21,112 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-10-13 06:44:21,114 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-13 06:44:21,116 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,118 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 06:44:21,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 06:44:21,120 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,121 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-13 06:44:21,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 06:44:21,123 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,123 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,124 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,125 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 06:44:21,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 06:44:21,127 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 06:44:21,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 06:44:21,129 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 06:44:21,131 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,132 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 06:44:21,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 06:44:21,134 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,135 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-13 06:44:21,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 06:44:21,137 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,138 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,140 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,140 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 06:44:21,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 06:44:21,142 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 06:44:21,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 06:44:21,144 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:21,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 06:44:21,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 317 [2021-10-13 06:44:21,162 INFO L446 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_45|], 2=[|v_#memory_$Pointer$.base_21|], 4=[|v_#memory_$Pointer$.base_20|]} [2021-10-13 06:44:21,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-10-13 06:44:21,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:44:21,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:44:21,187 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 06:44:21,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:21,223 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-10-13 06:44:21,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:44:21,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:44:21,244 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 06:44:21,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:21,260 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:21,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:21,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:44:21,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-13 06:44:21,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-13 06:44:21,282 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 06:44:21,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:21,300 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:21,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 278 [2021-10-13 06:44:21,307 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-13 06:44:21,308 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:308, output treesize:278 [2021-10-13 06:44:21,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:21,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:21,530 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_21| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 06:44:21,533 INFO L168 Benchmark]: Toolchain (without parser) took 4138.27 ms. Allocated memory was 119.5 MB in the beginning and 151.0 MB in the end (delta: 31.5 MB). Free memory was 90.1 MB in the beginning and 73.8 MB in the end (delta: 16.3 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:21,534 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 119.5 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:44:21,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.82 ms. Allocated memory is still 119.5 MB. Free memory was 89.9 MB in the beginning and 86.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:21,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.29 ms. Allocated memory is still 119.5 MB. Free memory was 86.8 MB in the beginning and 85.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:21,535 INFO L168 Benchmark]: Boogie Preprocessor took 32.41 ms. Allocated memory is still 119.5 MB. Free memory was 85.0 MB in the beginning and 83.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:21,536 INFO L168 Benchmark]: RCFGBuilder took 581.43 ms. Allocated memory is still 119.5 MB. Free memory was 83.6 MB in the beginning and 64.5 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:21,536 INFO L168 Benchmark]: TraceAbstraction took 2944.05 ms. Allocated memory was 119.5 MB in the beginning and 151.0 MB in the end (delta: 31.5 MB). Free memory was 64.2 MB in the beginning and 73.8 MB in the end (delta: -9.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:21,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 119.5 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 520.82 ms. Allocated memory is still 119.5 MB. Free memory was 89.9 MB in the beginning and 86.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.29 ms. Allocated memory is still 119.5 MB. Free memory was 86.8 MB in the beginning and 85.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.41 ms. Allocated memory is still 119.5 MB. Free memory was 85.0 MB in the beginning and 83.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 581.43 ms. Allocated memory is still 119.5 MB. Free memory was 83.6 MB in the beginning and 64.5 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2944.05 ms. Allocated memory was 119.5 MB in the beginning and 151.0 MB in the end (delta: 31.5 MB). Free memory was 64.2 MB in the beginning and 73.8 MB in the end (delta: -9.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_21| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_21|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 06:44:21,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:44:24,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:44:24,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:44:24,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:44:24,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:44:24,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:44:24,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:44:24,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:44:24,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:44:24,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:44:24,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:44:24,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:44:24,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:44:24,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:44:24,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:44:24,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:44:24,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:44:24,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:44:24,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:44:24,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:44:24,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:44:24,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:44:24,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:44:24,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:44:24,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:44:24,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:44:24,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:44:24,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:44:24,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:44:24,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:44:24,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:44:24,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:44:24,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:44:24,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:44:24,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:44:24,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:44:24,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:44:24,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:44:24,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:44:24,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:44:24,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:44:24,213 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:44:24,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:44:24,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:44:24,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:44:24,251 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:44:24,251 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:44:24,251 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:44:24,252 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:44:24,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:44:24,252 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:44:24,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:44:24,253 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:44:24,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:44:24,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:44:24,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:44:24,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:44:24,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:44:24,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:44:24,255 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:44:24,255 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:44:24,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:44:24,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:44:24,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:44:24,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:44:24,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:44:24,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:44:24,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:44:24,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:24,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:44:24,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:44:24,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:44:24,258 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:44:24,258 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:24,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:44:24,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:44:24,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:44:24,259 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_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7852fa616656cf29d8d53332cfc28f5a43f0ad1 [2021-10-13 06:44:24,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:44:24,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:44:24,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:44:24,670 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:44:24,671 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:44:24,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/heap-data/shared_mem2.i [2021-10-13 06:44:24,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/data/6315a11e4/36a51ca62bbc42628c856942593c4fa5/FLAG66c22abf9 [2021-10-13 06:44:25,276 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:44:25,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/sv-benchmarks/c/heap-data/shared_mem2.i [2021-10-13 06:44:25,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/data/6315a11e4/36a51ca62bbc42628c856942593c4fa5/FLAG66c22abf9 [2021-10-13 06:44:25,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/data/6315a11e4/36a51ca62bbc42628c856942593c4fa5 [2021-10-13 06:44:25,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:44:25,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:44:25,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:25,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:44:25,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:44:25,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:25" (1/1) ... [2021-10-13 06:44:25,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3e02db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:25, skipping insertion in model container [2021-10-13 06:44:25,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:25" (1/1) ... [2021-10-13 06:44:25,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:44:25,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:44:26,048 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_10b22e37-55e6-47ac-9084-059a7bd689c8/sv-benchmarks/c/heap-data/shared_mem2.i[23827,23840] [2021-10-13 06:44:26,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:26,079 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:44:26,148 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_10b22e37-55e6-47ac-9084-059a7bd689c8/sv-benchmarks/c/heap-data/shared_mem2.i[23827,23840] [2021-10-13 06:44:26,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:26,192 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:44:26,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26 WrapperNode [2021-10-13 06:44:26,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:26,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:26,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:44:26,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:44:26,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (1/1) ... [2021-10-13 06:44:26,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (1/1) ... [2021-10-13 06:44:26,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:26,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:44:26,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:44:26,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:44:26,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (1/1) ... [2021-10-13 06:44:26,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (1/1) ... [2021-10-13 06:44:26,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (1/1) ... [2021-10-13 06:44:26,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (1/1) ... [2021-10-13 06:44:26,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (1/1) ... [2021-10-13 06:44:26,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (1/1) ... [2021-10-13 06:44:26,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (1/1) ... [2021-10-13 06:44:26,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:44:26,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:44:26,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:44:26,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:44:26,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (1/1) ... [2021-10-13 06:44:26,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:26,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:26,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:44:26,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:44:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 06:44:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 06:44:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 06:44:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:44:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 06:44:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 06:44:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:44:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:44:26,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:44:27,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:44:27,124 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 06:44:27,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:27 BoogieIcfgContainer [2021-10-13 06:44:27,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:44:27,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:44:27,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:44:27,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:44:27,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:44:25" (1/3) ... [2021-10-13 06:44:27,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1717a506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:27, skipping insertion in model container [2021-10-13 06:44:27,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:26" (2/3) ... [2021-10-13 06:44:27,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1717a506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:27, skipping insertion in model container [2021-10-13 06:44:27,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:27" (3/3) ... [2021-10-13 06:44:27,134 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem2.i [2021-10-13 06:44:27,140 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:44:27,140 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:44:27,197 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:44:27,203 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:44:27,204 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:44:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 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) [2021-10-13 06:44:27,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:44:27,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:27,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:27,223 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:27,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:27,229 INFO L82 PathProgramCache]: Analyzing trace with hash 532134152, now seen corresponding path program 1 times [2021-10-13 06:44:27,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:27,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088979142] [2021-10-13 06:44:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:27,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:27,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:27,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:27,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:44:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:27,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 06:44:27,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:27,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:27,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:27,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088979142] [2021-10-13 06:44:27,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088979142] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:27,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:27,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 06:44:27,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998366187] [2021-10-13 06:44:27,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:44:27,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:44:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:44:27,514 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 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) 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) [2021-10-13 06:44:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:27,527 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2021-10-13 06:44:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:44:27,529 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 [2021-10-13 06:44:27,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:27,536 INFO L225 Difference]: With dead ends: 28 [2021-10-13 06:44:27,536 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 06:44:27,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:44:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 06:44:27,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 06:44:27,565 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) [2021-10-13 06:44:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-10-13 06:44:27,567 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2021-10-13 06:44:27,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:27,568 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-10-13 06:44:27,568 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) [2021-10-13 06:44:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-10-13 06:44:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 06:44:27,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:27,569 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:27,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:27,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:44:27,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:27,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:27,783 INFO L82 PathProgramCache]: Analyzing trace with hash -982132135, now seen corresponding path program 1 times [2021-10-13 06:44:27,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:27,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989060305] [2021-10-13 06:44:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:27,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:27,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:27,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:27,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:44:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:27,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:44:27,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:28,029 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-10-13 06:44:28,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 44 [2021-10-13 06:44:28,088 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-10-13 06:44:28,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 31 [2021-10-13 06:44:28,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-10-13 06:44:28,375 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 06:44:28,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-13 06:44:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:28,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:28,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:28,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989060305] [2021-10-13 06:44:28,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989060305] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:28,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:28,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 06:44:28,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399707231] [2021-10-13 06:44:28,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:28,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:28,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:28,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:28,515 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:29,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:29,634 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-10-13 06:44:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:29,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 06:44:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:29,636 INFO L225 Difference]: With dead ends: 24 [2021-10-13 06:44:29,636 INFO L226 Difference]: Without dead ends: 20 [2021-10-13 06:44:29,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:44:29,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-13 06:44:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-13 06:44:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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) [2021-10-13 06:44:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-10-13 06:44:29,642 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 9 [2021-10-13 06:44:29,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:29,643 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-10-13 06:44:29,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2021-10-13 06:44:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 06:44:29,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:29,644 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:29,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:29,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:44:29,858 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:29,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:29,858 INFO L82 PathProgramCache]: Analyzing trace with hash -17837994, now seen corresponding path program 1 times [2021-10-13 06:44:29,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:29,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747883551] [2021-10-13 06:44:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:29,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:29,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:29,861 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:29,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 06:44:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:30,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 06:44:30,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:31,533 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-10-13 06:44:31,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 51 [2021-10-13 06:44:31,620 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-10-13 06:44:31,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-10-13 06:44:31,819 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 06:44:31,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-10-13 06:44:32,171 INFO L354 Elim1Store]: treesize reduction 170, result has 11.5 percent of original size [2021-10-13 06:44:32,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 103 treesize of output 94 [2021-10-13 06:44:32,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:32,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-13 06:44:33,914 INFO L354 Elim1Store]: treesize reduction 174, result has 14.7 percent of original size [2021-10-13 06:44:33,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 82 treesize of output 64 [2021-10-13 06:44:33,998 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-13 06:44:33,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 51 [2021-10-13 06:44:34,021 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-13 06:44:34,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:44:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:34,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:34,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:34,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 06:44:34,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:34,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-10-13 06:44:34,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:34,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 06:44:36,276 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~n~0.base_4 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_4 (_ BitVec 32)) (ULTIMATE.start_main_~list~0.offset (_ BitVec 32))) (or (bvslt (select (select (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_4 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_4) v_ULTIMATE.start_main_~n~0.offset_4 ULTIMATE.start_main_~x~0) (bvadd v_ULTIMATE.start_main_~n~0.offset_4 (_ bv4 32)) v_DerPreprocessor_2) (bvadd v_ULTIMATE.start_main_~n~0.offset_4 (_ bv8 32)) v_DerPreprocessor_3)))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) ULTIMATE.start_main_~list~0.offset) v_DerPreprocessor_4))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)) (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_4))))) is different from false [2021-10-13 06:44:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 06:44:36,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:36,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747883551] [2021-10-13 06:44:36,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747883551] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:36,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1153594781] [2021-10-13 06:44:36,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:36,428 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:36,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:44:36,434 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:44:36,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 06:44:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:36,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 06:44:36,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:36,686 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 06:44:36,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-10-13 06:44:36,732 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-13 06:44:36,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 34 [2021-10-13 06:44:36,760 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-13 06:44:36,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-13 06:44:37,102 INFO L354 Elim1Store]: treesize reduction 170, result has 11.5 percent of original size [2021-10-13 06:44:37,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 102 treesize of output 93 [2021-10-13 06:44:37,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:37,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-13 06:44:37,967 INFO L354 Elim1Store]: treesize reduction 174, result has 14.7 percent of original size [2021-10-13 06:44:37,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 63 [2021-10-13 06:44:38,004 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-13 06:44:38,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 50 [2021-10-13 06:44:38,023 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-13 06:44:38,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:44:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:38,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:38,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:38,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-13 06:44:38,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:38,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-13 06:44:38,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:38,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 06:44:40,215 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~n~0.base_6 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_6 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (ULTIMATE.start_main_~list~0.offset (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_6)))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_6 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_6) v_ULTIMATE.start_main_~n~0.offset_6 ULTIMATE.start_main_~x~0) (bvadd v_ULTIMATE.start_main_~n~0.offset_6 (_ bv4 32)) v_DerPreprocessor_6) (bvadd v_ULTIMATE.start_main_~n~0.offset_6 (_ bv8 32)) v_DerPreprocessor_7)))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) ULTIMATE.start_main_~list~0.offset) v_DerPreprocessor_8))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)))) is different from false [2021-10-13 06:44:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 06:44:40,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1153594781] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:40,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688480890] [2021-10-13 06:44:40,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:40,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:40,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:40,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:40,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 06:44:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:40,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 06:44:40,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:41,828 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-10-13 06:44:41,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 51 [2021-10-13 06:44:41,929 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-10-13 06:44:41,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-10-13 06:44:42,120 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 06:44:42,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-10-13 06:44:42,419 INFO L354 Elim1Store]: treesize reduction 170, result has 11.5 percent of original size [2021-10-13 06:44:42,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 95 [2021-10-13 06:44:42,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:42,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-13 06:44:43,224 INFO L354 Elim1Store]: treesize reduction 174, result has 14.7 percent of original size [2021-10-13 06:44:43,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 65 [2021-10-13 06:44:43,273 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-13 06:44:43,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 52 [2021-10-13 06:44:43,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:44:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:43,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:43,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:43,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 06:44:43,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:43,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-10-13 06:44:43,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:43,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 06:44:45,463 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~n~0.offset_8 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_8 (_ BitVec 32)) (ULTIMATE.start_main_~list~0.offset (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_8))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_8 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_8) v_ULTIMATE.start_main_~n~0.offset_8 ULTIMATE.start_main_~x~0) (bvadd v_ULTIMATE.start_main_~n~0.offset_8 (_ bv4 32)) v_DerPreprocessor_10) (bvadd v_ULTIMATE.start_main_~n~0.offset_8 (_ bv8 32)) v_DerPreprocessor_11)))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) ULTIMATE.start_main_~list~0.offset) v_DerPreprocessor_12))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)))) is different from false [2021-10-13 06:44:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 06:44:45,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688480890] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:45,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:44:45,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2021-10-13 06:44:45,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355526410] [2021-10-13 06:44:45,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 06:44:45,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:45,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 06:44:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=30, Unknown=3, NotChecked=36, Total=90 [2021-10-13 06:44:45,581 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:51,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:51,478 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-10-13 06:44:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:44:51,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 06:44:51,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:51,481 INFO L225 Difference]: With dead ends: 33 [2021-10-13 06:44:51,481 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 06:44:51,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 10321.0ms TimeCoverageRelationStatistics Valid=33, Invalid=48, Unknown=3, NotChecked=48, Total=132 [2021-10-13 06:44:51,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 06:44:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2021-10-13 06:44:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:51,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2021-10-13 06:44:51,486 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 11 [2021-10-13 06:44:51,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:51,487 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2021-10-13 06:44:51,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:51,487 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2021-10-13 06:44:51,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 06:44:51,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:51,487 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:51,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-13 06:44:51,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 06:44:51,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:52,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:52,089 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:52,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:52,090 INFO L82 PathProgramCache]: Analyzing trace with hash 594646320, now seen corresponding path program 1 times [2021-10-13 06:44:52,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:52,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118190757] [2021-10-13 06:44:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:52,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:52,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:52,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:52,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 06:44:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:52,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 06:44:52,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:52,413 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-10-13 06:44:52,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 51 [2021-10-13 06:44:52,472 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-10-13 06:44:52,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-10-13 06:44:52,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:52,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:44:52,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-13 06:44:52,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:52,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:44:52,973 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 06:44:52,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 76 [2021-10-13 06:44:52,983 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 06:44:52,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 46 [2021-10-13 06:44:53,012 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-10-13 06:44:53,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2021-10-13 06:44:53,137 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 06:44:53,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2021-10-13 06:44:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:53,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:53,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:53,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118190757] [2021-10-13 06:44:53,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118190757] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:53,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [280725591] [2021-10-13 06:44:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:53,461 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:53,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:44:53,477 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:44:53,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 06:44:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:53,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 06:44:53,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:53,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:53,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:44:53,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:53,772 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-10-13 06:44:53,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 38 [2021-10-13 06:44:53,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:53,786 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 06:44:53,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2021-10-13 06:44:53,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:53,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:44:54,359 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:54,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 68 [2021-10-13 06:44:54,429 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-13 06:44:54,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 60 [2021-10-13 06:44:54,437 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:54,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 45 [2021-10-13 06:44:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:54,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:55,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [280725591] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:55,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957866881] [2021-10-13 06:44:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:55,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:55,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:55,974 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:55,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 06:44:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:56,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 06:44:56,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:56,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:56,270 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-10-13 06:44:56,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2021-10-13 06:44:56,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:56,309 INFO L354 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2021-10-13 06:44:56,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 48 [2021-10-13 06:44:56,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:56,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:44:56,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:56,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:44:56,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-13 06:44:56,932 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:56,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 68 [2021-10-13 06:44:56,979 INFO L354 Elim1Store]: treesize reduction 104, result has 9.6 percent of original size [2021-10-13 06:44:56,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 48 [2021-10-13 06:44:56,992 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:56,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2021-10-13 06:44:57,186 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 06:44:57,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-13 06:44:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:57,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:57,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957866881] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:57,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:44:57,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 10, 6, 6] total 26 [2021-10-13 06:44:57,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025795834] [2021-10-13 06:44:57,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 06:44:57,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:57,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 06:44:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2021-10-13 06:44:57,306 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:45:07,281 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2021-10-13 06:45:07,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 06:45:07,282 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 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 13 [2021-10-13 06:45:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:45:07,283 INFO L225 Difference]: With dead ends: 44 [2021-10-13 06:45:07,283 INFO L226 Difference]: Without dead ends: 40 [2021-10-13 06:45:07,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3862.9ms TimeCoverageRelationStatistics Valid=253, Invalid=1007, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 06:45:07,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-13 06:45:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2021-10-13 06:45:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2021-10-13 06:45:07,293 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 13 [2021-10-13 06:45:07,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:45:07,293 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2021-10-13 06:45:07,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-10-13 06:45:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 06:45:07,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:45:07,295 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:45:07,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 06:45:07,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 06:45:07,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 06:45:07,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 06:45:07,907 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:45:07,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:45:07,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1044104429, now seen corresponding path program 2 times [2021-10-13 06:45:07,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:45:07,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265465252] [2021-10-13 06:45:07,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:45:07,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:45:07,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:45:07,910 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:45:07,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 06:45:08,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:45:08,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:45:08,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 06:45:08,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:45:08,196 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 06:45:08,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-10-13 06:45:08,240 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-13 06:45:08,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 34 [2021-10-13 06:45:08,262 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-13 06:45:08,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-13 06:45:08,524 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-10-13 06:45:08,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 88 [2021-10-13 06:45:08,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:08,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-10-13 06:45:09,699 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-10-13 06:45:09,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 58 [2021-10-13 06:45:09,727 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-13 06:45:09,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 45 [2021-10-13 06:45:09,736 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-13 06:45:09,873 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-10-13 06:45:09,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 66 [2021-10-13 06:45:09,883 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 06:45:09,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 51 [2021-10-13 06:45:09,958 INFO L354 Elim1Store]: treesize reduction 66, result has 27.5 percent of original size [2021-10-13 06:45:09,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 42 [2021-10-13 06:45:10,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-13 06:45:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:45:10,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:10,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:10,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 06:45:10,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:10,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 06:45:10,288 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:10,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-13 06:45:12,366 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_13 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_13) (_ bv0 32) ULTIMATE.start_main_~x~0) (_ bv4 32) v_DerPreprocessor_16) (_ bv8 32) v_DerPreprocessor_15)))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset) v_DerPreprocessor_14))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)) (not (bvsgt ULTIMATE.start_main_~x~0 (_ bv0 32))))) is different from false [2021-10-13 06:45:12,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:12,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-10-13 06:45:12,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:12,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-10-13 06:45:12,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:12,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-10-13 06:45:15,206 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_19 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_13 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_14 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_14 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_21 (_ BitVec 32)) (ULTIMATE.start_main_~list~0.offset (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (bvslt v_ULTIMATE.start_main_~x~0_21 (_ bv10 32))) (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) ULTIMATE.start_main_~list~0.offset))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_14 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_14) v_ULTIMATE.start_main_~n~0.offset_14 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_14) v_DerPreprocessor_19) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_14) v_DerPreprocessor_18)))) (store .cse3 c_ULTIMATE.start_main_~list~0.base (store (select .cse3 c_ULTIMATE.start_main_~list~0.base) .cse1 v_DerPreprocessor_17))))) (store .cse2 v_ULTIMATE.start_main_~n~0.base_13 (store (store (store (select .cse2 v_ULTIMATE.start_main_~n~0.base_13) (_ bv0 32) v_ULTIMATE.start_main_~x~0_21) (_ bv4 32) v_DerPreprocessor_16) (_ bv8 32) v_DerPreprocessor_15))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse1 v_DerPreprocessor_14)))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)) (not (bvsgt v_ULTIMATE.start_main_~x~0_21 (_ bv0 32))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_14)))))) is different from false [2021-10-13 06:45:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-10-13 06:45:15,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:45:15,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265465252] [2021-10-13 06:45:15,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265465252] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:45:15,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2080042865] [2021-10-13 06:45:15,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:45:15,922 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:45:15,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:45:15,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:45:15,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 06:45:16,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 06:45:16,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631097044] [2021-10-13 06:45:16,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:45:16,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:45:16,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:45:16,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 1 [2021-10-13 06:45:16,221 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:45:16,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 06:45:16,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:45:16,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:45:16,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 06:45:16,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:45:16,669 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 06:45:16,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-10-13 06:45:16,709 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-13 06:45:16,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 34 [2021-10-13 06:45:16,732 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-13 06:45:16,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-13 06:45:17,134 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-10-13 06:45:17,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 96 [2021-10-13 06:45:17,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:17,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-13 06:45:18,039 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-10-13 06:45:18,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 66 [2021-10-13 06:45:18,102 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-10-13 06:45:18,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 68 [2021-10-13 06:45:18,451 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-10-13 06:45:18,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 108 [2021-10-13 06:45:18,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:18,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-13 06:45:18,517 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-10-13 06:45:18,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 72 [2021-10-13 06:45:18,553 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-13 06:45:18,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 64 [2021-10-13 06:45:18,560 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-13 06:45:18,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:45:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:45:18,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:18,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:18,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 06:45:18,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:18,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-10-13 06:45:18,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:18,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 06:45:20,730 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_16 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_17 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_17))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_17 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_17) v_ULTIMATE.start_main_~n~0.offset_16 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_16) v_DerPreprocessor_22) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_16) v_DerPreprocessor_23)))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset) v_DerPreprocessor_24))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)))) is different from false [2021-10-13 06:45:20,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:20,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-10-13 06:45:20,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:20,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2021-10-13 06:45:20,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:20,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-10-13 06:45:23,199 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_17 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_16 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_17 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_18 (_ BitVec 32)) (ULTIMATE.start_main_~list~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_25 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~n~0.base_18 (_ bv1 1)) v_ULTIMATE.start_main_~n~0.base_17)))) (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_18))) (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) ULTIMATE.start_main_~list~0.offset))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_18 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_18) v_ULTIMATE.start_main_~n~0.offset_17 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_17) v_DerPreprocessor_27) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_17) v_DerPreprocessor_26)))) (store .cse3 c_ULTIMATE.start_main_~list~0.base (store (select .cse3 c_ULTIMATE.start_main_~list~0.base) .cse1 v_DerPreprocessor_25))))) (store .cse2 v_ULTIMATE.start_main_~n~0.base_17 (store (store (store (select .cse2 v_ULTIMATE.start_main_~n~0.base_17) v_ULTIMATE.start_main_~n~0.offset_16 v_ULTIMATE.start_main_~x~0_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_16) v_DerPreprocessor_22) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_16) v_DerPreprocessor_23))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse1 v_DerPreprocessor_24)))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)))) is different from false [2021-10-13 06:45:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-10-13 06:45:23,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631097044] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:45:23,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-13 06:45:23,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 16 [2021-10-13 06:45:23,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270581671] [2021-10-13 06:45:23,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 06:45:23,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:45:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 06:45:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=98, Unknown=4, NotChecked=92, Total=240 [2021-10-13 06:45:23,718 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:27,365 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~m~0.base)) (exists ((ULTIMATE.start_main_~n~0.base (_ BitVec 32))) (and (not (= c_ULTIMATE.start_main_~m~0.base ULTIMATE.start_main_~n~0.base)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| ULTIMATE.start_main_~n~0.base))) (_ bv1 1))) (not (= c_ULTIMATE.start_main_~list~0.base ULTIMATE.start_main_~n~0.base)))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_13 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_13) (_ bv0 32) ULTIMATE.start_main_~x~0) (_ bv4 32) v_DerPreprocessor_16) (_ bv8 32) v_DerPreprocessor_15)))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset) v_DerPreprocessor_14))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)) (not (bvsgt ULTIMATE.start_main_~x~0 (_ bv0 32))))) (exists ((v_arrayElimCell_96 (_ BitVec 1))) (let ((.cse1 (bvneg v_arrayElimCell_96))) (and (= (_ bv0 1) (bvadd (select |c_#valid| c_ULTIMATE.start_main_~list~0.base) .cse1)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg .cse1)))))) (= (_ bv0 32) (select (select |c_#memory_int| c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_16 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_17 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_17))) (bvslt (select (select (let ((.cse2 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_17 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_17) v_ULTIMATE.start_main_~n~0.offset_16 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_16) v_DerPreprocessor_22) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_16) v_DerPreprocessor_23)))) (store .cse2 c_ULTIMATE.start_main_~list~0.base (store (select .cse2 c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset) v_DerPreprocessor_24))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~m~0.base)))) (_ bv1 1))) (= c_ULTIMATE.start_main_~m~0.offset (_ bv0 32))) is different from false [2021-10-13 06:45:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:45:27,858 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2021-10-13 06:45:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:45:27,859 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 06:45:27,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:45:27,860 INFO L225 Difference]: With dead ends: 51 [2021-10-13 06:45:27,860 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 06:45:27,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 10640.9ms TimeCoverageRelationStatistics Valid=64, Invalid=133, Unknown=5, NotChecked=140, Total=342 [2021-10-13 06:45:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 06:45:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2021-10-13 06:45:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2021-10-13 06:45:27,869 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 13 [2021-10-13 06:45:27,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:45:27,870 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2021-10-13 06:45:27,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:27,870 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2021-10-13 06:45:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 06:45:27,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:45:27,872 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:45:27,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 06:45:28,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 06:45:28,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:45:28,288 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:45:28,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:45:28,288 INFO L82 PathProgramCache]: Analyzing trace with hash 163302606, now seen corresponding path program 1 times [2021-10-13 06:45:28,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:45:28,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439237357] [2021-10-13 06:45:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:28,289 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:45:28,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:45:28,290 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:45:28,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 06:45:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:28,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 06:45:28,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:45:30,424 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-10-13 06:45:30,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 51 [2021-10-13 06:45:30,515 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-10-13 06:45:30,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-10-13 06:45:30,697 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 06:45:30,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-10-13 06:45:31,024 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-10-13 06:45:31,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 96 [2021-10-13 06:45:31,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:31,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-13 06:45:31,828 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-10-13 06:45:31,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 66 [2021-10-13 06:45:31,893 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-10-13 06:45:31,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 68 [2021-10-13 06:45:32,381 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-10-13 06:45:32,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 125 [2021-10-13 06:45:32,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:32,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-13 06:45:32,466 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-10-13 06:45:32,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 89 [2021-10-13 06:45:32,513 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-13 06:45:32,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 81 [2021-10-13 06:45:32,522 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-13 06:45:32,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:45:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 06:45:32,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:32,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:32,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 06:45:32,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:32,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-10-13 06:45:32,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:32,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 06:45:34,763 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_21 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_19 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_21))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_21 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_21) v_ULTIMATE.start_main_~n~0.offset_19 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_19) v_DerPreprocessor_30) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_19) v_DerPreprocessor_31)))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset) v_DerPreprocessor_32))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)))) is different from false [2021-10-13 06:45:34,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:34,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-13 06:45:34,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:34,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-10-13 06:45:34,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:34,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-10-13 06:45:37,268 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~n~0.offset_20 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_22 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_21 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_30 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_19 (_ BitVec 32)) (ULTIMATE.start_main_~list~0.offset (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_22))) (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) ULTIMATE.start_main_~list~0.offset))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_22 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_22) v_ULTIMATE.start_main_~n~0.offset_20 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_20) v_DerPreprocessor_35) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_20) v_DerPreprocessor_34)))) (store .cse3 c_ULTIMATE.start_main_~list~0.base (store (select .cse3 c_ULTIMATE.start_main_~list~0.base) .cse1 v_DerPreprocessor_33))))) (store .cse2 v_ULTIMATE.start_main_~n~0.base_21 (store (store (store (select .cse2 v_ULTIMATE.start_main_~n~0.base_21) v_ULTIMATE.start_main_~n~0.offset_19 v_ULTIMATE.start_main_~x~0_30) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_19) v_DerPreprocessor_30) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_19) v_DerPreprocessor_31))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse1 v_DerPreprocessor_32)))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)) (not (= (_ bv0 1) (select (store |c_#valid| v_ULTIMATE.start_main_~n~0.base_22 (_ bv1 1)) v_ULTIMATE.start_main_~n~0.base_21))))) is different from false [2021-10-13 06:45:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 7 not checked. [2021-10-13 06:45:37,609 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:45:37,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439237357] [2021-10-13 06:45:37,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439237357] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:45:37,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [630217637] [2021-10-13 06:45:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:37,610 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:45:37,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:45:37,612 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:45:37,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-13 06:45:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:38,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 06:45:38,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:45:39,988 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-10-13 06:45:39,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 51 [2021-10-13 06:45:40,060 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-10-13 06:45:40,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-10-13 06:45:40,181 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 06:45:40,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-10-13 06:45:40,421 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-10-13 06:45:40,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 94 [2021-10-13 06:45:40,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:40,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-13 06:45:41,058 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-10-13 06:45:41,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 64 [2021-10-13 06:45:41,119 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-10-13 06:45:41,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 66 [2021-10-13 06:45:41,693 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-10-13 06:45:41,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 127 [2021-10-13 06:45:41,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:41,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-10-13 06:45:41,797 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-10-13 06:45:41,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 118 treesize of output 91 [2021-10-13 06:45:41,861 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-13 06:45:41,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 83 [2021-10-13 06:45:41,886 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-13 06:45:41,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:45:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 06:45:41,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:41,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:41,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 06:45:41,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:41,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-10-13 06:45:41,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:41,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 06:45:44,048 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_22 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_25 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (v_DerPreprocessor_38 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_25))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_25 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_25) v_ULTIMATE.start_main_~n~0.offset_22 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_22) v_DerPreprocessor_38) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_22) v_DerPreprocessor_39)))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset) v_DerPreprocessor_40))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)))) is different from false [2021-10-13 06:45:44,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:44,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-10-13 06:45:44,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:44,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2021-10-13 06:45:44,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:44,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-10-13 06:45:46,508 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_22 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_23 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_26 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_25 (_ BitVec 32)) (ULTIMATE.start_main_~list~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_35 (_ BitVec 32)) (v_DerPreprocessor_42 (_ BitVec 32)) (v_DerPreprocessor_43 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_41 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (v_DerPreprocessor_38 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_26))) (not (= (_ bv0 1) (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~n~0.base_26 (_ bv1 1)) v_ULTIMATE.start_main_~n~0.base_25)))) (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) ULTIMATE.start_main_~list~0.offset))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_26 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_26) v_ULTIMATE.start_main_~n~0.offset_23 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_23) v_DerPreprocessor_43) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_23) v_DerPreprocessor_42)))) (store .cse3 c_ULTIMATE.start_main_~list~0.base (store (select .cse3 c_ULTIMATE.start_main_~list~0.base) .cse1 v_DerPreprocessor_41))))) (store .cse2 v_ULTIMATE.start_main_~n~0.base_25 (store (store (store (select .cse2 v_ULTIMATE.start_main_~n~0.base_25) v_ULTIMATE.start_main_~n~0.offset_22 v_ULTIMATE.start_main_~x~0_35) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_22) v_DerPreprocessor_38) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_22) v_DerPreprocessor_39))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse1 v_DerPreprocessor_40)))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)))) is different from false [2021-10-13 06:45:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 7 not checked. [2021-10-13 06:45:46,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [630217637] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:45:46,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710367155] [2021-10-13 06:45:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:46,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:45:46,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:45:46,840 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:45:46,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 06:45:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:47,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 06:45:47,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:45:48,074 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-10-13 06:45:48,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 51 [2021-10-13 06:45:48,144 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-10-13 06:45:48,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-10-13 06:45:48,282 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 06:45:48,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-10-13 06:45:48,615 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-10-13 06:45:48,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 95 [2021-10-13 06:45:48,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:48,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-13 06:45:49,420 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-10-13 06:45:49,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 65 [2021-10-13 06:45:49,485 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-10-13 06:45:49,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2021-10-13 06:45:49,996 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-10-13 06:45:49,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 136 treesize of output 124 [2021-10-13 06:45:50,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:50,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-13 06:45:50,106 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-10-13 06:45:50,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 88 [2021-10-13 06:45:50,171 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-13 06:45:50,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 80 [2021-10-13 06:45:50,186 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-13 06:45:50,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:45:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 06:45:50,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:50,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:50,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 06:45:50,279 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:50,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-10-13 06:45:50,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:50,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 06:45:52,337 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_25 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_29 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_29))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_29 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_29) v_ULTIMATE.start_main_~n~0.offset_25 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_25) v_DerPreprocessor_46) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_25) v_DerPreprocessor_47)))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset) v_DerPreprocessor_48))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)))) is different from false [2021-10-13 06:45:52,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:52,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-13 06:45:52,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:52,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-10-13 06:45:52,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:52,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-10-13 06:45:54,872 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_30 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_26 (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.offset_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_40 (_ BitVec 32)) (ULTIMATE.start_main_~list~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~n~0.base_29 (_ BitVec 32)) (v_DerPreprocessor_50 (_ BitVec 32)) (v_DerPreprocessor_51 (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (or (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) ULTIMATE.start_main_~list~0.offset))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_30 (store (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~n~0.base_30) v_ULTIMATE.start_main_~n~0.offset_26 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_26) v_DerPreprocessor_51) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_26) v_DerPreprocessor_50)))) (store .cse3 c_ULTIMATE.start_main_~list~0.base (store (select .cse3 c_ULTIMATE.start_main_~list~0.base) .cse1 v_DerPreprocessor_49))))) (store .cse2 v_ULTIMATE.start_main_~n~0.base_29 (store (store (store (select .cse2 v_ULTIMATE.start_main_~n~0.base_29) v_ULTIMATE.start_main_~n~0.offset_25 v_ULTIMATE.start_main_~x~0_40) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~n~0.offset_25) v_DerPreprocessor_46) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~n~0.offset_25) v_DerPreprocessor_47))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (store (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse1 v_DerPreprocessor_48)))) c_ULTIMATE.start_main_~m~0.base) c_ULTIMATE.start_main_~m~0.offset) (_ bv100 32)) (not (= (_ bv0 1) (select (store |c_#valid| v_ULTIMATE.start_main_~n~0.base_30 (_ bv1 1)) v_ULTIMATE.start_main_~n~0.base_29))) (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~n~0.base_30))))) is different from false [2021-10-13 06:45:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 7 not checked. [2021-10-13 06:45:55,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710367155] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:45:55,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:45:55,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-10-13 06:45:55,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89199433] [2021-10-13 06:45:55,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 06:45:55,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:45:55,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 06:45:55,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=43, Unknown=6, NotChecked=102, Total=182 [2021-10-13 06:45:55,199 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:46:08,228 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification. DAG size of input: 126 DAG size of output: 51 [2021-10-13 06:46:10,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:46:10,230 INFO L93 Difference]: Finished difference Result 53 states and 75 transitions. [2021-10-13 06:46:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 06:46:10,230 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 06:46:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:46:10,231 INFO L225 Difference]: With dead ends: 53 [2021-10-13 06:46:10,231 INFO L226 Difference]: Without dead ends: 49 [2021-10-13 06:46:10,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 11 SemanticMatches, 15 ConstructedPredicates, 6 IntricatePredicates, 2 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 23862.2ms TimeCoverageRelationStatistics Valid=49, Invalid=78, Unknown=7, NotChecked=138, Total=272 [2021-10-13 06:46:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-13 06:46:10,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2021-10-13 06:46:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:46:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2021-10-13 06:46:10,243 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 15 [2021-10-13 06:46:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:46:10,244 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2021-10-13 06:46:10,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:46:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-10-13 06:46:10,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 06:46:10,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:46:10,246 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:46:10,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 06:46:10,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-13 06:46:10,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-13 06:46:10,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:46:10,862 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:46:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:46:10,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1423314055, now seen corresponding path program 2 times [2021-10-13 06:46:10,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:46:10,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593570957] [2021-10-13 06:46:10,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:46:10,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:46:10,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:46:10,864 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:46:10,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 06:46:11,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:46:11,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:46:11,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 06:46:11,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:46:11,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:11,316 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-10-13 06:46:11,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 38 [2021-10-13 06:46:11,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:11,324 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 06:46:11,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2021-10-13 06:46:11,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-10-13 06:46:11,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:11,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:46:11,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:11,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:46:11,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 06:46:11,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:11,876 INFO L354 Elim1Store]: treesize reduction 147, result has 14.0 percent of original size [2021-10-13 06:46:11,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 144 [2021-10-13 06:46:11,960 INFO L354 Elim1Store]: treesize reduction 245, result has 6.8 percent of original size [2021-10-13 06:46:11,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 139 treesize of output 118 [2021-10-13 06:46:11,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 06:46:11,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:12,033 INFO L354 Elim1Store]: treesize reduction 147, result has 14.0 percent of original size [2021-10-13 06:46:12,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 102 [2021-10-13 06:46:12,395 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:46:12,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 76 [2021-10-13 06:46:12,415 INFO L354 Elim1Store]: treesize reduction 51, result has 12.1 percent of original size [2021-10-13 06:46:12,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 45 [2021-10-13 06:46:12,427 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:46:12,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2021-10-13 06:46:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:12,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:46:13,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:46:13,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1153 [2021-10-13 06:46:13,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:46:13,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1523 [2021-10-13 06:46:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:16,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:46:16,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593570957] [2021-10-13 06:46:16,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593570957] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:46:16,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [670885855] [2021-10-13 06:46:16,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:46:16,830 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:46:16,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:46:16,832 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:46:16,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-13 06:46:17,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 06:46:17,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634883346] [2021-10-13 06:46:17,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:46:17,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:46:17,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:46:17,268 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:46:17,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 1 [2021-10-13 06:46:17,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 06:46:17,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:46:17,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:46:17,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 06:46:17,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:46:17,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:17,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:46:17,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:17,936 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-10-13 06:46:17,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2021-10-13 06:46:17,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:17,988 INFO L354 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2021-10-13 06:46:17,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 48 [2021-10-13 06:46:18,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-13 06:46:18,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:18,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-10-13 06:46:18,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 06:46:18,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:18,608 INFO L354 Elim1Store]: treesize reduction 98, result has 14.8 percent of original size [2021-10-13 06:46:18,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 137 [2021-10-13 06:46:18,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 06:46:18,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:46:18,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 88 [2021-10-13 06:46:18,660 INFO L354 Elim1Store]: treesize reduction 49, result has 5.8 percent of original size [2021-10-13 06:46:18,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 64 [2021-10-13 06:46:21,418 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:46:21,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 76 [2021-10-13 06:46:21,441 INFO L354 Elim1Store]: treesize reduction 51, result has 12.1 percent of original size [2021-10-13 06:46:21,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 45 [2021-10-13 06:46:21,447 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:46:21,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2021-10-13 06:46:21,605 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 06:46:21,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-13 06:46:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:21,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:46:22,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:46:22,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 600 [2021-10-13 06:46:22,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:46:22,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 761 [2021-10-13 06:46:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:24,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634883346] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:46:24,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-13 06:46:24,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7, 8] total 26 [2021-10-13 06:46:24,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306064468] [2021-10-13 06:46:24,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 06:46:24,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:46:24,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 06:46:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=535, Unknown=1, NotChecked=0, Total=650 [2021-10-13 06:46:24,612 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:46:37,244 WARN L207 SmtUtils]: Spent 7.14 s on a formula simplification that was a NOOP. DAG size: 116 [2021-10-13 06:47:34,897 WARN L207 SmtUtils]: Spent 6.32 s on a formula simplification that was a NOOP. DAG size: 84 [2021-10-13 06:47:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:47:38,103 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2021-10-13 06:47:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 06:47:38,106 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 06:47:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:47:38,107 INFO L225 Difference]: With dead ends: 61 [2021-10-13 06:47:38,107 INFO L226 Difference]: Without dead ends: 57 [2021-10-13 06:47:38,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 38671.9ms TimeCoverageRelationStatistics Valid=295, Invalid=1183, Unknown=4, NotChecked=0, Total=1482 [2021-10-13 06:47:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-13 06:47:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2021-10-13 06:47:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:47:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2021-10-13 06:47:38,116 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 17 [2021-10-13 06:47:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:47:38,116 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2021-10-13 06:47:38,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:47:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2021-10-13 06:47:38,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 06:47:38,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:47:38,118 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:47:38,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 06:47:38,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 06:47:38,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:47:38,537 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:47:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:47:38,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1681061654, now seen corresponding path program 1 times [2021-10-13 06:47:38,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:47:38,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159770024] [2021-10-13 06:47:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:47:38,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:47:38,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:47:38,539 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:47:38,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 06:47:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:47:39,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 06:47:39,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:47:39,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 60 [2021-10-13 06:47:39,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 42 [2021-10-13 06:47:39,288 INFO L354 Elim1Store]: treesize reduction 48, result has 53.4 percent of original size [2021-10-13 06:47:39,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 72 [2021-10-13 06:47:51,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-13 06:47:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 06:47:51,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:47:51,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 58 [2021-10-13 06:47:51,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2021-10-13 06:47:53,628 INFO L354 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2021-10-13 06:47:53,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 1 [2021-10-13 06:47:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 06:47:53,640 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:47:53,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159770024] [2021-10-13 06:47:53,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159770024] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 06:47:53,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 06:47:53,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2021-10-13 06:47:53,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714378962] [2021-10-13 06:47:53,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 06:47:53,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:47:53,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 06:47:53,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=131, Unknown=1, NotChecked=0, Total=182 [2021-10-13 06:47:53,642 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2021-10-13 06:48:05,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:05,284 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2021-10-13 06:48:05,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 06:48:05,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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 17 [2021-10-13 06:48:05,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:05,286 INFO L225 Difference]: With dead ends: 53 [2021-10-13 06:48:05,286 INFO L226 Difference]: Without dead ends: 49 [2021-10-13 06:48:05,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 7240.5ms TimeCoverageRelationStatistics Valid=60, Invalid=149, Unknown=1, NotChecked=0, Total=210 [2021-10-13 06:48:05,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-13 06:48:05,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2021-10-13 06:48:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.325) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:48:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2021-10-13 06:48:05,294 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 17 [2021-10-13 06:48:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:05,295 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2021-10-13 06:48:05,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2021-10-13 06:48:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2021-10-13 06:48:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 06:48:05,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:05,296 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:48:05,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 06:48:05,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:48:05,497 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:05,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:05,497 INFO L82 PathProgramCache]: Analyzing trace with hash -263616061, now seen corresponding path program 1 times [2021-10-13 06:48:05,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:48:05,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814387211] [2021-10-13 06:48:05,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:05,498 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:48:05,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:48:05,499 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:48:05,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 06:48:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:05,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 06:48:05,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:48:05,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:48:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:48:05,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:48:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:48:06,000 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:48:06,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814387211] [2021-10-13 06:48:06,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814387211] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:48:06,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1260852232] [2021-10-13 06:48:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:06,001 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:48:06,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:48:06,011 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:48:06,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-13 06:48:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:06,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 06:48:06,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:48:06,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:48:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:48:06,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:48:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:48:06,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1260852232] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:48:06,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429588766] [2021-10-13 06:48:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:06,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:48:06,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:48:06,701 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:48:06,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 06:48:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:07,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 06:48:07,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:48:07,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:48:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:48:07,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:48:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 06:48:07,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429588766] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:48:07,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:48:07,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 6 [2021-10-13 06:48:07,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914466936] [2021-10-13 06:48:07,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:48:07,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:48:07,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:48:07,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:48:07,312 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:48:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:08,070 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2021-10-13 06:48:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:48:08,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 06:48:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:08,073 INFO L225 Difference]: With dead ends: 47 [2021-10-13 06:48:08,073 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:48:08,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:48:08,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:48:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:48:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:48:08,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:48:08,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-13 06:48:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:08,075 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:48:08,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:48:08,075 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:48:08,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:48:08,077 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:48:08,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 06:48:08,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 06:48:08,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-10-13 06:48:08,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 06:48:08,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:48:08,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:48:08,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:48:23,901 WARN L207 SmtUtils]: Spent 15.05 s on a formula simplification. DAG size of input: 96 DAG size of output: 47 [2021-10-13 06:48:24,698 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:48:24,699 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 602) no Hoare annotation was computed. [2021-10-13 06:48:24,699 INFO L857 garLoopResultBuilder]: For program point L601(line 601) no Hoare annotation was computed. [2021-10-13 06:48:24,699 INFO L857 garLoopResultBuilder]: For program point L595-1(lines 595 599) no Hoare annotation was computed. [2021-10-13 06:48:24,699 INFO L853 garLoopResultBuilder]: At program point L595-3(lines 595 599) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~m~0.offset (_ bv0 32)))) (or (and (bvslt (select (select |#memory_int| ULTIMATE.start_main_~m~0.base) ULTIMATE.start_main_~m~0.offset) (_ bv100 32)) .cse0) (and (exists ((v_arrayElimCell_193 (_ BitVec 32)) (ULTIMATE.start_main_~list~0.base (_ BitVec 32)) (v_arrayElimCell_192 (_ BitVec 32)) (v_arrayElimCell_195 (_ BitVec 32)) (ULTIMATE.start_main_~list~0.offset (_ BitVec 32))) (let ((.cse3 (= v_arrayElimCell_192 ULTIMATE.start_main_~list~0.base)) (.cse2 (= v_arrayElimCell_193 ULTIMATE.start_main_~list~0.offset)) (.cse1 (select (select |#memory_int| v_arrayElimCell_192) v_arrayElimCell_193))) (and (or (= (bvmul (_ bv2 32) v_arrayElimCell_195) .cse1) (not .cse2) (not .cse3)) (or (and .cse3 .cse2) (= v_arrayElimCell_195 (select (select |#memory_int| ULTIMATE.start_main_~list~0.base) ULTIMATE.start_main_~list~0.offset))) (bvsle .cse1 (_ bv100 32)) (let ((.cse4 (= v_arrayElimCell_193 ULTIMATE.start_main_~m~0.offset)) (.cse5 (= v_arrayElimCell_192 ULTIMATE.start_main_~m~0.base))) (or (and .cse4 .cse5 (bvslt (bvadd (bvmul v_arrayElimCell_195 (_ bv4294967295 32)) .cse1) (_ bv100 32))) (and (or (not .cse4) (not .cse5)) (bvslt (select (select |#memory_int| ULTIMATE.start_main_~m~0.base) ULTIMATE.start_main_~m~0.offset) (_ bv100 32)))))))) .cse0))) [2021-10-13 06:48:24,700 INFO L857 garLoopResultBuilder]: For program point L595-4(lines 595 599) no Hoare annotation was computed. [2021-10-13 06:48:24,700 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 06:48:24,700 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:48:24,700 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 06:48:24,700 INFO L857 garLoopResultBuilder]: For program point L600(lines 600 601) no Hoare annotation was computed. [2021-10-13 06:48:24,700 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 601) no Hoare annotation was computed. [2021-10-13 06:48:24,701 INFO L857 garLoopResultBuilder]: For program point L596(lines 596 597) no Hoare annotation was computed. [2021-10-13 06:48:24,701 INFO L857 garLoopResultBuilder]: For program point L596-2(lines 596 597) no Hoare annotation was computed. [2021-10-13 06:48:24,701 INFO L857 garLoopResultBuilder]: For program point L586(lines 586 592) no Hoare annotation was computed. [2021-10-13 06:48:24,701 INFO L853 garLoopResultBuilder]: At program point L586-2(lines 584 593) the Hoare annotation is: (let ((.cse5 (= (_ bv0 32) (select (select |#memory_int| ULTIMATE.start_main_~m~0.base) ULTIMATE.start_main_~m~0.offset))) (.cse7 (= ULTIMATE.start_main_~m~0.offset (_ bv0 32)))) (or (let ((.cse0 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~head~0.base)) (.cse3 (bvadd ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (.cse4 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~head~0.base)) (.cse1 (bvadd ULTIMATE.start_main_~head~0.offset (_ bv8 32))) (.cse2 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~list~0.base)) (.cse6 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~list~0.base))) (and (= (select .cse0 .cse1) ULTIMATE.start_main_~head~0.offset) (= ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (select |#valid| ULTIMATE.start_main_~m~0.base)) (_ bv1 1))) (= (select .cse2 (_ bv4 32)) ULTIMATE.start_main_~m~0.offset) (= (select .cse0 .cse3) ULTIMATE.start_main_~m~0.offset) (= ULTIMATE.start_main_~m~0.base (select .cse4 .cse3)) .cse5 (= (select (select |#memory_int| ULTIMATE.start_main_~head~0.base) ULTIMATE.start_main_~head~0.offset) (_ bv1 32)) (= ULTIMATE.start_main_~head~0.offset (_ bv0 32)) (= (select .cse4 .cse1) ULTIMATE.start_main_~head~0.base) (= (select .cse2 (_ bv8 32)) (_ bv0 32)) (= ULTIMATE.start_main_~list~0.base (select .cse6 (bvadd (_ bv8 32) ULTIMATE.start_main_~list~0.offset))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| ULTIMATE.start_main_~list~0.base))) (_ bv1 1))) (= (select (select |#memory_int| ULTIMATE.start_main_~list~0.base) ULTIMATE.start_main_~list~0.offset) (_ bv1 32)) (= (select .cse6 (_ bv4 32)) ULTIMATE.start_main_~m~0.base) .cse7)) (and (not (= ULTIMATE.start_main_~list~0.base ULTIMATE.start_main_~m~0.base)) (exists ((ULTIMATE.start_main_~n~0.base (_ BitVec 32))) (and (not (= ULTIMATE.start_main_~m~0.base ULTIMATE.start_main_~n~0.base)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| ULTIMATE.start_main_~n~0.base))) (_ bv1 1))) (not (= ULTIMATE.start_main_~list~0.base ULTIMATE.start_main_~n~0.base)))) .cse5 (exists ((v_arrayElimCell_112 (_ BitVec 1))) (let ((.cse8 (bvneg v_arrayElimCell_112))) (and (= (_ bv0 1) (bvadd (select |#valid| ULTIMATE.start_main_~m~0.base) .cse8)) (= (_ bv0 1) (bvadd (bvneg .cse8) (_ bv1 1)))))) .cse7 (exists ((v_arrayElimCell_113 (_ BitVec 1))) (let ((.cse9 (bvneg (bvneg v_arrayElimCell_113)))) (and (= (_ bv0 1) (bvadd .cse9 (bvneg (select |#valid| ULTIMATE.start_main_~list~0.base)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg .cse9)))))))) (_ bv1 1))))))))) [2021-10-13 06:48:24,702 INFO L857 garLoopResultBuilder]: For program point L584-2(lines 584 593) no Hoare annotation was computed. [2021-10-13 06:48:24,706 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:48:24,713 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,714 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,714 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,714 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,714 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,714 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,716 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,716 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,725 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,726 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,726 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,726 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,726 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,726 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,728 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,754 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,754 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,754 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,754 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,754 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,754 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,755 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,755 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,755 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,755 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,755 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,755 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,755 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,755 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,756 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,756 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,756 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,756 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,756 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,756 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,756 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,756 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,757 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,782 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 06:48:24,784 INFO L168 Benchmark]: Toolchain (without parser) took 239202.55 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 37.7 MB in the beginning and 52.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:48:24,784 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 73.4 MB. Free memory was 55.5 MB in the beginning and 55.4 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:48:24,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.12 ms. Allocated memory is still 73.4 MB. Free memory was 58.3 MB in the beginning and 49.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:48:24,784 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.21 ms. Allocated memory is still 73.4 MB. Free memory was 49.4 MB in the beginning and 47.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:48:24,785 INFO L168 Benchmark]: Boogie Preprocessor took 35.67 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 45.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:48:24,785 INFO L168 Benchmark]: RCFGBuilder took 829.02 ms. Allocated memory is still 73.4 MB. Free memory was 45.8 MB in the beginning and 32.2 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:48:24,785 INFO L168 Benchmark]: TraceAbstraction took 237655.28 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 31.8 MB in the beginning and 52.5 MB in the end (delta: -20.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:48:24,786 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 73.4 MB. Free memory was 55.5 MB in the beginning and 55.4 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 597.12 ms. Allocated memory is still 73.4 MB. Free memory was 58.3 MB in the beginning and 49.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.21 ms. Allocated memory is still 73.4 MB. Free memory was 49.4 MB in the beginning and 47.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.67 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 45.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 829.02 ms. Allocated memory is still 73.4 MB. Free memory was 45.8 MB in the beginning and 32.2 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 237655.28 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 31.8 MB in the beginning and 52.5 MB in the end (delta: -20.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 601]: 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, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 237510.8ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 14.9ms, AutomataDifference: 122131.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 16019.2ms, InitialAbstractionConstructionTime: 9.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 116 SDtfs, 221 SDslu, 551 SDs, 0 SdLazy, 660 SolverSat, 137 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 71297.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 546 GetRequests, 395 SyntacticMatches, 15 SemanticMatches, 136 ConstructedPredicates, 14 IntricatePredicates, 3 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 94739.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=8, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 67.9ms AutomataMinimizationTime, 9 MinimizatonAttempts, 75 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 13 NumberOfFragments, 287 HoareAnnotationTreeSize, 2 FomulaSimplifications, 22423 FormulaSimplificationTreeSizeReduction, 169.5ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 241 FormulaSimplificationTreeSizeReductionInter, 15844.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 201.3ms SsaConstructionTime, 1690.2ms SatisfiabilityAnalysisTime, 88727.6ms InterpolantComputationTime, 274 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 510 ConstructedInterpolants, 91 QuantifiedInterpolants, 22764 SizeOfPredicates, 217 NumberOfNonLiveVariables, 1398 ConjunctsInSsa, 236 ConjunctsInUnsatCore, 38 InterpolantComputations, 5 PerfectInterpolantSequences, 89/204 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: 595]: Loop Invariant [2021-10-13 06:48:24,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,810 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,810 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,810 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,810 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,810 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,810 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,811 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,811 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,811 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,811 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,812 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,812 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,812 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,812 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,812 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,813 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,813 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,814 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,814 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,814 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,814 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,815 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,815 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,815 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,815 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,815 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.base,QUANTIFIED] [2021-10-13 06:48:24,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0.offset,QUANTIFIED] [2021-10-13 06:48:24,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_195,QUANTIFIED] [2021-10-13 06:48:24,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] [2021-10-13 06:48:24,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_193,QUANTIFIED] [2021-10-13 06:48:24,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_192,QUANTIFIED] Derived loop invariant: (~bvslt32(unknown-#memory_int-unknown[m][m], 100bv32) && m == 0bv32) || ((\exists v_arrayElimCell_193 : bv32, ULTIMATE.start_main_~list~0.base : bv32, v_arrayElimCell_192 : bv32, v_arrayElimCell_195 : bv32, ULTIMATE.start_main_~list~0.offset : bv32 :: ((((~bvmul32(2bv32, v_arrayElimCell_195) == unknown-#memory_int-unknown[v_arrayElimCell_192][v_arrayElimCell_193] || !(v_arrayElimCell_193 == ULTIMATE.start_main_~list~0.offset)) || !(v_arrayElimCell_192 == ULTIMATE.start_main_~list~0.base)) && ((v_arrayElimCell_192 == ULTIMATE.start_main_~list~0.base && v_arrayElimCell_193 == ULTIMATE.start_main_~list~0.offset) || v_arrayElimCell_195 == unknown-#memory_int-unknown[ULTIMATE.start_main_~list~0.base][ULTIMATE.start_main_~list~0.offset])) && ~bvsle32(unknown-#memory_int-unknown[v_arrayElimCell_192][v_arrayElimCell_193], 100bv32)) && (((v_arrayElimCell_193 == m && v_arrayElimCell_192 == m) && ~bvslt32(~bvadd64(~bvmul32(v_arrayElimCell_195, 4294967295bv32), unknown-#memory_int-unknown[v_arrayElimCell_192][v_arrayElimCell_193]), 100bv32)) || ((!(v_arrayElimCell_193 == m) || !(v_arrayElimCell_192 == m)) && ~bvslt32(unknown-#memory_int-unknown[m][m], 100bv32)))) && m == 0bv32) - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 06:48:24,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b22e37-55e6-47ac-9084-059a7bd689c8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...