./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7b415e0519ab150e9247d3d9d0133f92cfd07c34f9918f9ebd19cf8109bf4e7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:29:53,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:29:53,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:29:53,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:29:53,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:29:53,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:29:53,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:29:53,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:29:53,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:29:53,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:29:53,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:29:53,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:29:53,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:29:53,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:29:53,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:29:53,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:29:53,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:29:53,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:29:53,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:29:53,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:29:53,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:29:53,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:29:53,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:29:53,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:29:53,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:29:53,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:29:53,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:29:53,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:29:53,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:29:53,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:29:53,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:29:53,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:29:53,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:29:53,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:29:53,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:29:53,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:29:53,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:29:53,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:29:53,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:29:53,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:29:53,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:29:53,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 00:29:53,943 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:29:53,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:29:53,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:29:53,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:29:53,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:29:53,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:29:53,948 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:29:53,948 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:29:53,948 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:29:53,949 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:29:53,950 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:29:53,951 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:29:53,951 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:29:53,951 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:29:53,952 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:29:53,952 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:29:53,952 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:29:53,953 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:29:53,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:29:53,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:29:53,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:29:53,955 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:29:53,956 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:29:53,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:29:53,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:29:53,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:29:53,959 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:29:53,959 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:29:53,960 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:29:53,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:29:53,961 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:29:53,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:29:53,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:29:53,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:29:53,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:29:53,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:29:53,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:29:53,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:29:53,964 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:29:53,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:29:53,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:29:53,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:29:53,965 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_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b415e0519ab150e9247d3d9d0133f92cfd07c34f9918f9ebd19cf8109bf4e7 [2021-11-21 00:29:54,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:29:54,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:29:54,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:29:54,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:29:54,442 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:29:54,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2021-11-21 00:29:54,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/data/f8edab636/39cc65b6ce8349b88e5b2a6e17597eb7/FLAGf7b14c742 [2021-11-21 00:29:55,346 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:29:55,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2021-11-21 00:29:55,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/data/f8edab636/39cc65b6ce8349b88e5b2a6e17597eb7/FLAGf7b14c742 [2021-11-21 00:29:55,583 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/data/f8edab636/39cc65b6ce8349b88e5b2a6e17597eb7 [2021-11-21 00:29:55,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:29:55,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:29:55,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:29:55,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:29:55,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:29:55,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:29:55" (1/1) ... [2021-11-21 00:29:55,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2424d281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:55, skipping insertion in model container [2021-11-21 00:29:55,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:29:55" (1/1) ... [2021-11-21 00:29:55,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:29:55,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:29:56,156 WARN L230 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_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i[24872,24885] [2021-11-21 00:29:56,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:29:56,170 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:29:56,227 WARN L230 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_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i[24872,24885] [2021-11-21 00:29:56,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:29:56,275 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:29:56,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56 WrapperNode [2021-11-21 00:29:56,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:29:56,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:29:56,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:29:56,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:29:56,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (1/1) ... [2021-11-21 00:29:56,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (1/1) ... [2021-11-21 00:29:56,368 INFO L137 Inliner]: procedures = 127, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 178 [2021-11-21 00:29:56,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:29:56,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:29:56,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:29:56,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:29:56,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (1/1) ... [2021-11-21 00:29:56,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (1/1) ... [2021-11-21 00:29:56,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (1/1) ... [2021-11-21 00:29:56,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (1/1) ... [2021-11-21 00:29:56,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (1/1) ... [2021-11-21 00:29:56,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (1/1) ... [2021-11-21 00:29:56,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (1/1) ... [2021-11-21 00:29:56,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:29:56,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:29:56,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:29:56,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:29:56,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (1/1) ... [2021-11-21 00:29:56,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:29:56,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:29:56,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:29:56,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:29:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:29:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:29:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-21 00:29:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-21 00:29:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:29:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:29:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:29:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:29:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:29:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:29:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:29:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:29:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:29:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:29:56,669 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:29:56,671 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:29:57,240 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:29:57,301 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:29:57,302 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 00:29:57,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:29:57 BoogieIcfgContainer [2021-11-21 00:29:57,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:29:57,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:29:57,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:29:57,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:29:57,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:29:55" (1/3) ... [2021-11-21 00:29:57,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7ef80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:29:57, skipping insertion in model container [2021-11-21 00:29:57,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:29:56" (2/3) ... [2021-11-21 00:29:57,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7ef80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:29:57, skipping insertion in model container [2021-11-21 00:29:57,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:29:57" (3/3) ... [2021-11-21 00:29:57,324 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_insert_unequal.i [2021-11-21 00:29:57,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:29:57,332 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2021-11-21 00:29:57,430 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:29:57,441 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-21 00:29:57,443 INFO L340 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2021-11-21 00:29:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 56 states have (on average 2.375) internal successors, (133), 118 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:29:57,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:29:57,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:57,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:29:57,497 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:29:57,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:57,510 INFO L85 PathProgramCache]: Analyzing trace with hash 263032871, now seen corresponding path program 1 times [2021-11-21 00:29:57,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:57,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248760118] [2021-11-21 00:29:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:57,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:57,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:57,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248760118] [2021-11-21 00:29:57,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248760118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:57,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:57,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:29:57,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286088812] [2021-11-21 00:29:57,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:57,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:57,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:57,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:57,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:57,812 INFO L87 Difference]: Start difference. First operand has 123 states, 56 states have (on average 2.375) internal successors, (133), 118 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:58,067 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2021-11-21 00:29:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:29:58,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 00:29:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:58,079 INFO L225 Difference]: With dead ends: 121 [2021-11-21 00:29:58,079 INFO L226 Difference]: Without dead ends: 119 [2021-11-21 00:29:58,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:58,085 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 6 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:58,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 172 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:29:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-21 00:29:58,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-21 00:29:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 55 states have (on average 2.272727272727273) internal successors, (125), 114 states have internal predecessors, (125), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:29:58,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2021-11-21 00:29:58,133 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 5 [2021-11-21 00:29:58,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:58,134 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2021-11-21 00:29:58,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:58,135 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2021-11-21 00:29:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:29:58,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:58,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:29:58,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:29:58,136 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:29:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:58,137 INFO L85 PathProgramCache]: Analyzing trace with hash 263032872, now seen corresponding path program 1 times [2021-11-21 00:29:58,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:58,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366748880] [2021-11-21 00:29:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:58,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:58,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:58,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366748880] [2021-11-21 00:29:58,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366748880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:58,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:58,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:29:58,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091170219] [2021-11-21 00:29:58,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:58,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:58,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:58,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:58,248 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:58,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:58,431 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2021-11-21 00:29:58,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:29:58,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 00:29:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:58,434 INFO L225 Difference]: With dead ends: 117 [2021-11-21 00:29:58,435 INFO L226 Difference]: Without dead ends: 117 [2021-11-21 00:29:58,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:58,437 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 2 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:58,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 177 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:29:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-21 00:29:58,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-21 00:29:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 112 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:29:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2021-11-21 00:29:58,470 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 5 [2021-11-21 00:29:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:58,471 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2021-11-21 00:29:58,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:29:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2021-11-21 00:29:58,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:29:58,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:58,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:29:58,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:29:58,473 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:29:58,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:58,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1123251110, now seen corresponding path program 1 times [2021-11-21 00:29:58,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:58,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009562355] [2021-11-21 00:29:58,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:58,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:58,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009562355] [2021-11-21 00:29:58,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009562355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:58,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:58,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:29:58,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553798704] [2021-11-21 00:29:58,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:58,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:58,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:58,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:58,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:58,622 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:29:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:58,704 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2021-11-21 00:29:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:29:58,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-21 00:29:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:58,708 INFO L225 Difference]: With dead ends: 123 [2021-11-21 00:29:58,708 INFO L226 Difference]: Without dead ends: 123 [2021-11-21 00:29:58,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:58,710 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 4 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:58,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 219 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:29:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-21 00:29:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2021-11-21 00:29:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 56 states have (on average 2.2142857142857144) internal successors, (124), 113 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:29:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2021-11-21 00:29:58,739 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 10 [2021-11-21 00:29:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:58,740 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2021-11-21 00:29:58,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:29:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2021-11-21 00:29:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:29:58,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:58,749 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:29:58,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:29:58,750 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:29:58,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:58,752 INFO L85 PathProgramCache]: Analyzing trace with hash -899275376, now seen corresponding path program 1 times [2021-11-21 00:29:58,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:58,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492932067] [2021-11-21 00:29:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:58,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:29:58,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:58,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492932067] [2021-11-21 00:29:58,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492932067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:58,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:58,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:29:58,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011951888] [2021-11-21 00:29:58,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:58,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:29:58,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:29:58,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:29:58,899 INFO L87 Difference]: Start difference. First operand 118 states and 130 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:29:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:59,268 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2021-11-21 00:29:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:29:59,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-21 00:29:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:59,273 INFO L225 Difference]: With dead ends: 118 [2021-11-21 00:29:59,273 INFO L226 Difference]: Without dead ends: 118 [2021-11-21 00:29:59,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:29:59,276 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 9 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:59,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 346 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:29:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-21 00:29:59,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2021-11-21 00:29:59,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 56 states have (on average 2.1964285714285716) internal successors, (123), 112 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:29:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2021-11-21 00:29:59,293 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 17 [2021-11-21 00:29:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:59,293 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2021-11-21 00:29:59,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:29:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2021-11-21 00:29:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:29:59,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:59,295 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:29:59,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:29:59,295 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:29:59,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:59,304 INFO L85 PathProgramCache]: Analyzing trace with hash -899275375, now seen corresponding path program 1 times [2021-11-21 00:29:59,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:59,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142347720] [2021-11-21 00:29:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:59,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:29:59,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:59,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142347720] [2021-11-21 00:29:59,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142347720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:59,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:59,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:29:59,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503719009] [2021-11-21 00:29:59,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:59,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:29:59,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:29:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:29:59,535 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:29:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:59,811 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2021-11-21 00:29:59,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:29:59,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-21 00:29:59,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:59,813 INFO L225 Difference]: With dead ends: 117 [2021-11-21 00:29:59,814 INFO L226 Difference]: Without dead ends: 117 [2021-11-21 00:29:59,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:29:59,816 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 7 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:59,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 370 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:29:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-21 00:29:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-11-21 00:29:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 56 states have (on average 2.1785714285714284) internal successors, (122), 111 states have internal predecessors, (122), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:29:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2021-11-21 00:29:59,831 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 17 [2021-11-21 00:29:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:59,833 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2021-11-21 00:29:59,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:29:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2021-11-21 00:29:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:29:59,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:59,839 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:29:59,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:29:59,840 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:29:59,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:59,840 INFO L85 PathProgramCache]: Analyzing trace with hash -914973968, now seen corresponding path program 1 times [2021-11-21 00:29:59,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:59,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107352144] [2021-11-21 00:29:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:59,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:00,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:00,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107352144] [2021-11-21 00:30:00,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107352144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:00,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136389154] [2021-11-21 00:30:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:00,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:00,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:00,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:30:00,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:30:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:00,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-21 00:30:00,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:00,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:30:00,584 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-21 00:30:00,585 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 14 treesize of output 9 [2021-11-21 00:30:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:00,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:30:00,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136389154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:00,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:30:00,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 12 [2021-11-21 00:30:00,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95716591] [2021-11-21 00:30:00,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:00,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:30:00,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:30:00,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:30:00,661 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 11 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:30:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:01,103 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2021-11-21 00:30:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:30:01,104 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2021-11-21 00:30:01,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:01,105 INFO L225 Difference]: With dead ends: 134 [2021-11-21 00:30:01,106 INFO L226 Difference]: Without dead ends: 134 [2021-11-21 00:30:01,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:30:01,108 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 217 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:01,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 413 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:30:01,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-21 00:30:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 115. [2021-11-21 00:30:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 56 states have (on average 2.1607142857142856) internal successors, (121), 110 states have internal predecessors, (121), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:30:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2021-11-21 00:30:01,141 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 19 [2021-11-21 00:30:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:01,142 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2021-11-21 00:30:01,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:30:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2021-11-21 00:30:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:30:01,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:01,144 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:01,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:01,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:01,370 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:30:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:01,371 INFO L85 PathProgramCache]: Analyzing trace with hash -914973967, now seen corresponding path program 1 times [2021-11-21 00:30:01,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:01,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432588571] [2021-11-21 00:30:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:01,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:01,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:01,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432588571] [2021-11-21 00:30:01,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432588571] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:01,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681981459] [2021-11-21 00:30:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:01,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:01,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:01,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:30:01,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:30:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:01,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-21 00:30:01,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:01,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:30:01,922 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-21 00:30:01,923 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 14 treesize of output 9 [2021-11-21 00:30:02,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:02,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:30:02,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681981459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:30:02,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1972263627] [2021-11-21 00:30:02,192 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-21 00:30:02,192 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:30:02,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:30:02,204 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:30:02,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:30:02,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:02,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:02,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:30:02,481 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-21 00:30:02,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 41 [2021-11-21 00:30:02,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-21 00:30:02,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:30:02,603 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 11 treesize of output 7 [2021-11-21 00:30:02,617 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 [2021-11-21 00:30:02,633 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 11 treesize of output 7 [2021-11-21 00:30:02,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:02,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 00:30:02,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:02,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 00:30:02,714 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 13 treesize of output 9 [2021-11-21 00:30:02,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:02,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:02,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-21 00:30:02,968 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-21 00:30:02,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 41 [2021-11-21 00:30:03,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:03,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:03,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-21 00:30:03,647 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-21 00:30:03,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 20 [2021-11-21 00:30:03,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:03,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:03,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:03,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:03,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:04,022 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-21 00:30:04,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 20 [2021-11-21 00:30:04,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:04,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:04,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:04,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:04,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:04,635 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-21 00:30:04,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-21 00:30:04,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:04,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-11-21 00:30:05,080 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-21 00:30:05,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 20 [2021-11-21 00:30:05,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:05,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:05,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:05,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:05,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:05,492 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-21 00:30:05,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 20 [2021-11-21 00:30:05,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:05,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:05,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:05,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:05,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:06,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-21 00:30:06,130 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-21 00:30:06,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:30:06,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-11-21 00:30:06,538 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-21 00:30:06,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 20 [2021-11-21 00:30:06,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:06,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:06,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:06,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:06,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:06,901 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-21 00:30:06,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 20 [2021-11-21 00:30:06,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:07,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:30:07,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:07,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:07,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:30:07,550 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-21 00:30:07,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 20 [2021-11-21 00:30:08,038 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-21 00:30:08,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 41 [2021-11-21 00:30:08,089 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 88 for LOIs [2021-11-21 00:30:10,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:10,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:30:10,654 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Some non-self update cases but no top-level DER relation at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:340) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:278) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) 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:610) 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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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) [2021-11-21 00:30:10,658 INFO L158 Benchmark]: Toolchain (without parser) took 15065.47ms. Allocated memory was 98.6MB in the beginning and 172.0MB in the end (delta: 73.4MB). Free memory was 67.2MB in the beginning and 50.8MB in the end (delta: 16.4MB). Peak memory consumption was 88.8MB. Max. memory is 16.1GB. [2021-11-21 00:30:10,659 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:30:10,659 INFO L158 Benchmark]: CACSL2BoogieTranslator took 680.68ms. Allocated memory was 98.6MB in the beginning and 136.3MB in the end (delta: 37.7MB). Free memory was 67.0MB in the beginning and 105.3MB in the end (delta: -38.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 00:30:10,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.55ms. Allocated memory is still 136.3MB. Free memory was 104.9MB in the beginning and 102.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:30:10,660 INFO L158 Benchmark]: Boogie Preprocessor took 46.34ms. Allocated memory is still 136.3MB. Free memory was 102.8MB in the beginning and 100.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:30:10,661 INFO L158 Benchmark]: RCFGBuilder took 892.82ms. Allocated memory is still 136.3MB. Free memory was 100.7MB in the beginning and 75.0MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-21 00:30:10,661 INFO L158 Benchmark]: TraceAbstraction took 13346.68ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 74.9MB in the beginning and 50.8MB in the end (delta: 24.1MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2021-11-21 00:30:10,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 680.68ms. Allocated memory was 98.6MB in the beginning and 136.3MB in the end (delta: 37.7MB). Free memory was 67.0MB in the beginning and 105.3MB in the end (delta: -38.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.55ms. Allocated memory is still 136.3MB. Free memory was 104.9MB in the beginning and 102.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.34ms. Allocated memory is still 136.3MB. Free memory was 102.8MB in the beginning and 100.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 892.82ms. Allocated memory is still 136.3MB. Free memory was 100.7MB in the beginning and 75.0MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 13346.68ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 74.9MB in the beginning and 50.8MB in the end (delta: 24.1MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Some non-self update cases but no top-level DER relation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Some non-self update cases but no top-level DER relation: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-21 00:30:10,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7b415e0519ab150e9247d3d9d0133f92cfd07c34f9918f9ebd19cf8109bf4e7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:30:13,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:30:13,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:30:13,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:30:13,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:30:13,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:30:13,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:30:13,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:30:13,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:30:13,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:30:13,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:30:13,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:30:13,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:30:13,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:30:13,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:30:13,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:30:13,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:30:13,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:30:13,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:30:13,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:30:13,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:30:13,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:30:13,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:30:13,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:30:13,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:30:13,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:30:13,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:30:13,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:30:13,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:30:13,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:30:13,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:30:13,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:30:13,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:30:13,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:30:13,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:30:13,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:30:13,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:30:13,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:30:13,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:30:13,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:30:13,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:30:13,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 00:30:14,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:30:14,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:30:14,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:30:14,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:30:14,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:30:14,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:30:14,040 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:30:14,040 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:30:14,040 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:30:14,041 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:30:14,042 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:30:14,042 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:30:14,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:30:14,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:30:14,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:30:14,045 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:30:14,045 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:30:14,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:30:14,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:30:14,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:30:14,047 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:30:14,047 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:30:14,047 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:30:14,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:30:14,048 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:30:14,048 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:30:14,049 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:30:14,049 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:30:14,049 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:30:14,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:30:14,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:30:14,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:30:14,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:30:14,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:30:14,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:30:14,052 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:30:14,053 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:30:14,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:30:14,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:30:14,054 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_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b415e0519ab150e9247d3d9d0133f92cfd07c34f9918f9ebd19cf8109bf4e7 [2021-11-21 00:30:14,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:30:14,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:30:14,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:30:14,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:30:14,543 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:30:14,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2021-11-21 00:30:14,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/data/f1525ccd1/f885f25f31524e8e848a355083392e7c/FLAGf22c8c606 [2021-11-21 00:30:15,399 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:30:15,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2021-11-21 00:30:15,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/data/f1525ccd1/f885f25f31524e8e848a355083392e7c/FLAGf22c8c606 [2021-11-21 00:30:15,617 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/data/f1525ccd1/f885f25f31524e8e848a355083392e7c [2021-11-21 00:30:15,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:30:15,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:30:15,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:30:15,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:30:15,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:30:15,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:30:15" (1/1) ... [2021-11-21 00:30:15,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f74237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:15, skipping insertion in model container [2021-11-21 00:30:15,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:30:15" (1/1) ... [2021-11-21 00:30:15,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:30:15,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:30:16,285 WARN L230 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_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i[24872,24885] [2021-11-21 00:30:16,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:30:16,304 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:30:16,395 WARN L230 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_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i[24872,24885] [2021-11-21 00:30:16,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:30:16,464 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:30:16,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16 WrapperNode [2021-11-21 00:30:16,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:30:16,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:30:16,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:30:16,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:30:16,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (1/1) ... [2021-11-21 00:30:16,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (1/1) ... [2021-11-21 00:30:16,555 INFO L137 Inliner]: procedures = 130, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 179 [2021-11-21 00:30:16,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:30:16,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:30:16,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:30:16,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:30:16,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (1/1) ... [2021-11-21 00:30:16,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (1/1) ... [2021-11-21 00:30:16,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (1/1) ... [2021-11-21 00:30:16,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (1/1) ... [2021-11-21 00:30:16,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (1/1) ... [2021-11-21 00:30:16,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (1/1) ... [2021-11-21 00:30:16,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (1/1) ... [2021-11-21 00:30:16,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:30:16,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:30:16,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:30:16,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:30:16,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (1/1) ... [2021-11-21 00:30:16,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:30:16,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:16,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:30:16,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:30:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 00:30:16,734 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-21 00:30:16,735 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-21 00:30:16,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:30:16,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:30:16,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:30:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:30:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:30:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:30:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 00:30:16,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:30:16,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:30:16,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:30:16,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:30:16,897 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:30:16,899 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:30:17,853 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:30:17,863 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:30:17,866 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 00:30:17,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:30:17 BoogieIcfgContainer [2021-11-21 00:30:17,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:30:17,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:30:17,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:30:17,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:30:17,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:30:15" (1/3) ... [2021-11-21 00:30:17,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dc3833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:30:17, skipping insertion in model container [2021-11-21 00:30:17,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:16" (2/3) ... [2021-11-21 00:30:17,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dc3833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:30:17, skipping insertion in model container [2021-11-21 00:30:17,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:30:17" (3/3) ... [2021-11-21 00:30:17,889 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_insert_unequal.i [2021-11-21 00:30:17,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:30:17,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2021-11-21 00:30:17,973 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:30:17,989 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-21 00:30:17,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2021-11-21 00:30:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 74 states have (on average 2.081081081081081) internal successors, (154), 136 states have internal predecessors, (154), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:30:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:30:18,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:18,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:30:18,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:30:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:18,037 INFO L85 PathProgramCache]: Analyzing trace with hash 896568277, now seen corresponding path program 1 times [2021-11-21 00:30:18,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:30:18,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512529030] [2021-11-21 00:30:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:18,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:30:18,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:30:18,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:30:18,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:30:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:18,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:30:18,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:18,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:30:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:18,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:30:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:18,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:30:18,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512529030] [2021-11-21 00:30:18,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512529030] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:18,352 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:18,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:30:18,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067051551] [2021-11-21 00:30:18,358 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:18,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:30:18,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:30:18,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:30:18,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:30:18,405 INFO L87 Difference]: Start difference. First operand has 141 states, 74 states have (on average 2.081081081081081) internal successors, (154), 136 states have internal predecessors, (154), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:18,737 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2021-11-21 00:30:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:30:18,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 00:30:18,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:18,753 INFO L225 Difference]: With dead ends: 139 [2021-11-21 00:30:18,753 INFO L226 Difference]: Without dead ends: 136 [2021-11-21 00:30:18,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:30:18,760 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 8 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:18,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 225 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:30:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-21 00:30:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-21 00:30:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 131 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:30:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2021-11-21 00:30:18,819 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 6 [2021-11-21 00:30:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:18,820 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2021-11-21 00:30:18,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2021-11-21 00:30:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:30:18,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:18,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:30:18,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:19,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:30:19,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:30:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:19,041 INFO L85 PathProgramCache]: Analyzing trace with hash 896568278, now seen corresponding path program 1 times [2021-11-21 00:30:19,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:30:19,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473966090] [2021-11-21 00:30:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:19,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:30:19,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:30:19,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:30:19,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:30:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:19,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:30:19,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:19,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:30:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:19,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:30:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:19,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:30:19,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473966090] [2021-11-21 00:30:19,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473966090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:19,360 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:19,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 00:30:19,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834531366] [2021-11-21 00:30:19,361 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:19,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:30:19,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:30:19,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:30:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:30:19,367 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:20,103 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2021-11-21 00:30:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:30:20,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 00:30:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:20,107 INFO L225 Difference]: With dead ends: 134 [2021-11-21 00:30:20,108 INFO L226 Difference]: Without dead ends: 134 [2021-11-21 00:30:20,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:30:20,110 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 4 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:20,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 312 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 00:30:20,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-21 00:30:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-21 00:30:20,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 72 states have (on average 1.9444444444444444) internal successors, (140), 129 states have internal predecessors, (140), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:30:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2021-11-21 00:30:20,129 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 6 [2021-11-21 00:30:20,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:20,129 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2021-11-21 00:30:20,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:30:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2021-11-21 00:30:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:30:20,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:20,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:20,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:20,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:30:20,351 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:30:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash 24922967, now seen corresponding path program 1 times [2021-11-21 00:30:20,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:30:20,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697556394] [2021-11-21 00:30:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:20,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:30:20,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:30:20,356 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:30:20,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:30:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:20,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:30:20,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:20,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:30:20,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:20,597 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:30:20,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697556394] [2021-11-21 00:30:20,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697556394] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:20,604 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:20,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:30:20,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470867060] [2021-11-21 00:30:20,606 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:20,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:30:20,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:30:20,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:30:20,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:30:20,608 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:30:20,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:20,630 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-11-21 00:30:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:30:20,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2021-11-21 00:30:20,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:20,634 INFO L225 Difference]: With dead ends: 141 [2021-11-21 00:30:20,634 INFO L226 Difference]: Without dead ends: 141 [2021-11-21 00:30:20,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:30:20,636 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 14 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:20,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 284 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:30:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-21 00:30:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2021-11-21 00:30:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 73 states have (on average 1.9315068493150684) internal successors, (141), 130 states have internal predecessors, (141), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:30:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions. [2021-11-21 00:30:20,672 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 13 [2021-11-21 00:30:20,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:20,673 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions. [2021-11-21 00:30:20,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:30:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions. [2021-11-21 00:30:20,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 00:30:20,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:20,676 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:20,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:20,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:30:20,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:30:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1284022556, now seen corresponding path program 1 times [2021-11-21 00:30:20,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:30:20,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267115508] [2021-11-21 00:30:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:20,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:30:20,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:30:20,880 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:30:20,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 00:30:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:21,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:30:21,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:21,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:30:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:21,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:30:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:21,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:30:21,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267115508] [2021-11-21 00:30:21,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267115508] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:21,325 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:21,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-21 00:30:21,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791083985] [2021-11-21 00:30:21,326 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:21,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:30:21,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:30:21,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:30:21,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:30:21,328 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:30:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:22,070 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2021-11-21 00:30:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:30:22,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-21 00:30:22,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:22,074 INFO L225 Difference]: With dead ends: 135 [2021-11-21 00:30:22,075 INFO L226 Difference]: Without dead ends: 135 [2021-11-21 00:30:22,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:30:22,077 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 12 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:22,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 439 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 00:30:22,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-21 00:30:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-11-21 00:30:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 73 states have (on average 1.917808219178082) internal successors, (140), 129 states have internal predecessors, (140), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:30:22,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2021-11-21 00:30:22,091 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 22 [2021-11-21 00:30:22,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:22,092 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2021-11-21 00:30:22,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:30:22,093 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2021-11-21 00:30:22,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 00:30:22,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:22,094 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:22,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:22,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:30:22,306 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:30:22,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1284022557, now seen corresponding path program 1 times [2021-11-21 00:30:22,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:30:22,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941013367] [2021-11-21 00:30:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:22,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:30:22,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:30:22,309 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:30:22,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 00:30:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:22,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:30:22,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:22,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:30:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:22,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:30:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:30:23,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:30:23,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941013367] [2021-11-21 00:30:23,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941013367] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:23,129 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:23,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-21 00:30:23,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792632514] [2021-11-21 00:30:23,130 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:23,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:30:23,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:30:23,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:30:23,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:30:23,133 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:30:24,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:24,840 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2021-11-21 00:30:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:30:24,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-11-21 00:30:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:24,843 INFO L225 Difference]: With dead ends: 134 [2021-11-21 00:30:24,843 INFO L226 Difference]: Without dead ends: 134 [2021-11-21 00:30:24,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:30:24,845 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 11 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:24,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 623 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 00:30:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-21 00:30:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2021-11-21 00:30:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 73 states have (on average 1.904109589041096) internal successors, (139), 128 states have internal predecessors, (139), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:30:24,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2021-11-21 00:30:24,857 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 22 [2021-11-21 00:30:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:24,858 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2021-11-21 00:30:24,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:30:24,859 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2021-11-21 00:30:24,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 00:30:24,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:24,860 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:30:24,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:30:25,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:30:25,075 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:30:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1337216453, now seen corresponding path program 1 times [2021-11-21 00:30:25,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:30:25,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972970952] [2021-11-21 00:30:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:25,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:30:25,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:30:25,078 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:30:25,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 00:30:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:25,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:30:25,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:25,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:30:25,555 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-21 00:30:25,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 31 [2021-11-21 00:30:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:25,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:30:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:30:55,590 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:30:55,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972970952] [2021-11-21 00:30:55,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972970952] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:30:55,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [130535977] [2021-11-21 00:30:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:55,591 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:30:55,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:30:55,607 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:30:55,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-21 00:30:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:55,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 00:30:55,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:30:55,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:31:00,046 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 00:31:00,047 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 16 treesize of output 21 [2021-11-21 00:31:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:31:00,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:31:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:31:08,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [130535977] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 00:31:08,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:31:08,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8, 6] total 18 [2021-11-21 00:31:08,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064486446] [2021-11-21 00:31:08,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:08,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:31:08,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:31:08,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:31:08,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=268, Unknown=15, NotChecked=0, Total=342 [2021-11-21 00:31:08,689 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:31:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:11,485 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2021-11-21 00:31:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:31:11,485 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2021-11-21 00:31:11,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:11,487 INFO L225 Difference]: With dead ends: 150 [2021-11-21 00:31:11,487 INFO L226 Difference]: Without dead ends: 150 [2021-11-21 00:31:11,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 71 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 43.6s TimeCoverageRelationStatistics Valid=69, Invalid=295, Unknown=16, NotChecked=0, Total=380 [2021-11-21 00:31:11,489 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 123 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:11,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 459 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 343 Invalid, 0 Unknown, 54 Unchecked, 0.7s Time] [2021-11-21 00:31:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-21 00:31:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 132. [2021-11-21 00:31:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 73 states have (on average 1.8904109589041096) internal successors, (138), 127 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:31:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 144 transitions. [2021-11-21 00:31:11,500 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 144 transitions. Word has length 25 [2021-11-21 00:31:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:11,501 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 144 transitions. [2021-11-21 00:31:11,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:31:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 144 transitions. [2021-11-21 00:31:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 00:31:11,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:11,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:31:11,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:31:11,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-21 00:31:11,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 00:31:11,919 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:31:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1337216454, now seen corresponding path program 1 times [2021-11-21 00:31:11,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:31:11,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052934625] [2021-11-21 00:31:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:11,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:31:11,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:31:11,922 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:31:11,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 00:31:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:12,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 00:31:12,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:31:12,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:31:12,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:31:12,527 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:31:12,528 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 28 treesize of output 30 [2021-11-21 00:31:12,542 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:31:12,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 27 [2021-11-21 00:31:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:12,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:31:26,747 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| .cse0) (bvule .cse0 (select (store |c_#length| |v_node_create_~temp~0#1.base_49| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6|)))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_49|))) (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2|))) (or (not (bvule .cse1 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6|))) (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| .cse1)))) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|)))))))) is different from false [2021-11-21 00:31:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:32,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:31:32,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052934625] [2021-11-21 00:31:32,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052934625] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:31:32,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1905071224] [2021-11-21 00:31:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:32,272 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:31:32,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:31:32,275 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:31:32,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-21 00:31:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:32,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 00:31:32,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:31:32,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:31:32,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:31:32,870 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:31:32,870 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 32 treesize of output 34 [2021-11-21 00:31:32,889 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:31:32,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 31 treesize of output 31 [2021-11-21 00:31:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:33,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:31:37,773 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|))))) (let ((.cse0 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4|))) (or (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| .cse0)) (not (bvule .cse0 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8|))))))) (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| .cse1) (bvule .cse1 (select |c_#length| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8|)))))) is different from false [2021-11-21 00:31:42,272 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_57| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|))))) (let ((.cse0 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4|))) (or (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| .cse0)) (not (bvule .cse0 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8|))))))) (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| .cse1) (bvule .cse1 (select (store |c_#length| |v_node_create_~temp~0#1.base_57| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8|)))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_57|))))) is different from false [2021-11-21 00:31:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-21 00:31:42,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1905071224] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:31:42,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107560767] [2021-11-21 00:31:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:42,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:42,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:31:42,839 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:31:42,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 00:31:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:42,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 00:31:42,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:31:42,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:31:42,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:31:43,218 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:31:43,219 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 31 treesize of output 33 [2021-11-21 00:31:43,238 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:31:43,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 30 [2021-11-21 00:31:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:31:43,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:32:04,298 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_65| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10| (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| .cse0) (bvule .cse0 (select (store |c_#length| |v_node_create_~temp~0#1.base_65| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10|)))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_65|))) (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|))))) (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6|))) (or (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| .cse1)) (not (bvule .cse1 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10|))))))))) is different from false [2021-11-21 00:32:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:32:04,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107560767] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:32:04,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 00:32:04,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2021-11-21 00:32:04,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252767401] [2021-11-21 00:32:04,944 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 00:32:04,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 00:32:04,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:32:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 00:32:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=198, Unknown=12, NotChecked=124, Total=380 [2021-11-21 00:32:04,948 INFO L87 Difference]: Start difference. First operand 132 states and 144 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 14 states have internal predecessors, (52), 3 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-21 00:32:07,167 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_57| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|))))) (let ((.cse0 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4|))) (or (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| .cse0)) (not (bvule .cse0 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8|))))))) (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| .cse1) (bvule .cse1 (select (store |c_#length| |v_node_create_~temp~0#1.base_57| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8|)))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_57|))))) (= |c_#length| |c_old(#length)|) (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (let ((.cse2 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| .cse2) (bvule .cse2 (select (store |c_#length| |v_node_create_~temp~0#1.base_49| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6|)))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_49|))) (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (let ((.cse3 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2|))) (or (not (bvule .cse3 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6|))) (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| .cse3)))) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|)))))))) (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_65| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10| (_ BitVec 32))) (or (let ((.cse4 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| .cse4) (bvule .cse4 (select (store |c_#length| |v_node_create_~temp~0#1.base_65| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10|)))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_65|))) (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|))))) (let ((.cse5 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6|))) (or (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| .cse5)) (not (bvule .cse5 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10|)))))))))) is different from false [2021-11-21 00:32:25,774 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_57| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|))))) (let ((.cse0 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4|))) (or (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| .cse0)) (not (bvule .cse0 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8|))))))) (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| .cse1) (bvule .cse1 (select (store |c_#length| |v_node_create_~temp~0#1.base_57| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8|)))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_57|))))) (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (let ((.cse2 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| .cse2) (bvule .cse2 (select (store |c_#length| |v_node_create_~temp~0#1.base_49| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6|)))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_49|))) (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (let ((.cse3 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2|))) (or (not (bvule .cse3 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6|))) (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| .cse3)))) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|)))))))) (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_65| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10| (_ BitVec 32))) (or (let ((.cse4 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| .cse4) (bvule .cse4 (select (store |c_#length| |v_node_create_~temp~0#1.base_65| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10|)))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_65|))) (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|))))) (let ((.cse5 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6|))) (or (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| .cse5)) (not (bvule .cse5 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10|)))))))))) is different from false [2021-11-21 00:33:05,825 WARN L227 SmtUtils]: Spent 24.43s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:33:07,842 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2|))) (and (bvule .cse0 (select |c_#length| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6|)) (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| .cse0))) (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2|))) (or (not (bvule .cse1 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_6|))) (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_2| .cse1)))) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|)))))))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_node_create_#res#1.base|)) (_ bv1 1))) (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|))))) (let ((.cse2 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4|))) (or (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| .cse2)) (not (bvule .cse2 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8|))))))) (let ((.cse3 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_4| .cse3) (bvule .cse3 (select |c_#length| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_8|)))))) (= |c_node_create_#res#1.offset| (_ bv0 32)) (forall ((|v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10| (_ BitVec 32))) (or (let ((.cse4 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6|))) (and (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| .cse4) (bvule .cse4 (select |c_#length| |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10|)))) (exists ((|v_node_create_~temp~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_48|))))) (let ((.cse5 (bvadd (_ bv4 32) |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6|))) (or (not (bvule |v_ULTIMATE.start_sll_circular_create_~last~0#1.offset_BEFORE_CALL_6| .cse5)) (not (bvule .cse5 (select (store |c_old(#length)| |v_node_create_~temp~0#1.base_48| (_ bv8 32)) |v_ULTIMATE.start_sll_circular_create_~last~0#1.base_BEFORE_CALL_10|))))))))) (= (_ bv8 32) (select |c_#length| |c_node_create_#res#1.base|))) is different from false [2021-11-21 00:33:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:08,892 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2021-11-21 00:33:08,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 00:33:08,893 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 14 states have internal predecessors, (52), 3 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 25 [2021-11-21 00:33:08,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:08,895 INFO L225 Difference]: With dead ends: 159 [2021-11-21 00:33:08,896 INFO L226 Difference]: Without dead ends: 159 [2021-11-21 00:33:08,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 121 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 7 IntricatePredicates, 2 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 102.6s TimeCoverageRelationStatistics Valid=92, Invalid=333, Unknown=23, NotChecked=308, Total=756 [2021-11-21 00:33:08,898 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 7 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 841 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:08,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 970 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 295 Invalid, 0 Unknown, 841 Unchecked, 1.1s Time] [2021-11-21 00:33:08,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-21 00:33:08,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2021-11-21 00:33:08,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 148 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 00:33:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2021-11-21 00:33:08,910 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 25 [2021-11-21 00:33:08,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:08,911 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2021-11-21 00:33:08,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 14 states have internal predecessors, (52), 3 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-21 00:33:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2021-11-21 00:33:08,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 00:33:08,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:08,913 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:08,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:33:09,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:33:09,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:33:09,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 00:33:09,530 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:33:09,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash -148939745, now seen corresponding path program 1 times [2021-11-21 00:33:09,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:33:09,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483329115] [2021-11-21 00:33:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:09,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:33:09,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:33:09,533 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:33:09,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 00:33:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:09,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 00:33:09,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:33:09,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:33:09,774 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 13 treesize of output 11 [2021-11-21 00:33:09,971 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-21 00:33:09,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 31 [2021-11-21 00:33:10,107 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:33:10,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 33 [2021-11-21 00:33:10,323 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-21 00:33:10,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 54 treesize of output 65 [2021-11-21 00:33:11,334 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-21 00:33:11,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 60 treesize of output 71 [2021-11-21 00:33:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:33:11,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:33:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 6 refuted. 14 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:58,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:33:58,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483329115] [2021-11-21 00:33:58,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483329115] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:33:58,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [902623242] [2021-11-21 00:33:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:58,496 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:33:58,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:33:58,498 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:33:58,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-21 00:33:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:58,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 00:33:58,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:33:58,992 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 00:33:58,993 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 14 treesize of output 19 [2021-11-21 00:33:59,212 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:33:59,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 17 [2021-11-21 00:33:59,495 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-21 00:33:59,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 37 [2021-11-21 00:33:59,997 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:33:59,998 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 43 treesize of output 37 [2021-11-21 00:34:04,527 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-21 00:34:04,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 49 treesize of output 66 [2021-11-21 00:34:05,634 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:34:05,635 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 43 treesize of output 37 [2021-11-21 00:34:06,057 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-21 00:34:06,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 58 treesize of output 75 [2021-11-21 00:34:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-21 00:34:06,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 00:34:13,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [902623242] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:13,915 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:34:13,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [10, 10] total 26 [2021-11-21 00:34:13,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242862427] [2021-11-21 00:34:13,916 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:13,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 00:34:13,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:13,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 00:34:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=568, Unknown=22, NotChecked=0, Total=702 [2021-11-21 00:34:13,917 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand has 15 states, 11 states have (on average 4.090909090909091) internal successors, (45), 13 states have internal predecessors, (45), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-21 00:34:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:22,439 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2021-11-21 00:34:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:34:22,440 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 4.090909090909091) internal successors, (45), 13 states have internal predecessors, (45), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2021-11-21 00:34:22,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:22,442 INFO L225 Difference]: With dead ends: 159 [2021-11-21 00:34:22,442 INFO L226 Difference]: Without dead ends: 159 [2021-11-21 00:34:22,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 104 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 63.1s TimeCoverageRelationStatistics Valid=128, Invalid=658, Unknown=26, NotChecked=0, Total=812 [2021-11-21 00:34:22,444 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 17 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:22,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 469 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 271 Unchecked, 0.3s Time] [2021-11-21 00:34:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-21 00:34:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2021-11-21 00:34:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 94 states have (on average 1.702127659574468) internal successors, (160), 147 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 00:34:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 170 transitions. [2021-11-21 00:34:22,454 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 170 transitions. Word has length 37 [2021-11-21 00:34:22,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:22,454 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 170 transitions. [2021-11-21 00:34:22,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 4.090909090909091) internal successors, (45), 13 states have internal predecessors, (45), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-21 00:34:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 170 transitions. [2021-11-21 00:34:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 00:34:22,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:22,457 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:22,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-21 00:34:22,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:22,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:22,860 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:34:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:22,861 INFO L85 PathProgramCache]: Analyzing trace with hash -148939744, now seen corresponding path program 1 times [2021-11-21 00:34:22,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:22,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446475273] [2021-11-21 00:34:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:22,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:22,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:22,862 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:22,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 00:34:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:23,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-21 00:34:23,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:23,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:34:23,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:34:23,158 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 19 treesize of output 17 [2021-11-21 00:34:23,168 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 9 treesize of output 7 [2021-11-21 00:34:23,504 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:34:23,505 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 27 treesize of output 29 [2021-11-21 00:34:23,520 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:34:23,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 [2021-11-21 00:34:23,698 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:34:23,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 14 [2021-11-21 00:34:24,101 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 00:34:24,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 29 treesize of output 34 [2021-11-21 00:34:25,231 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-21 00:34:25,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 32 [2021-11-21 00:34:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:26,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:36:28,857 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_12| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_106| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_111| (_ BitVec 32))) (or (not (bvult |v_node_create_~temp~0#1.base_106| |c_#StackHeapBarrier|)) (exists ((|v_node_create_~temp~0#1.base_106| (_ BitVec 32)) (|v_node_create_~temp~0#1.base_110| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_110|))) (or (not (bvule |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4| (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_node_create_~temp~0#1.base_102| (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|) (select (store (store (store |c_old(#length)| |v_node_create_~temp~0#1.base_110| (_ bv8 32)) |v_node_create_~temp~0#1.base_106| (_ bv8 32)) |v_node_create_~temp~0#1.base_102| (_ bv8 32)) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_12|))))) (bvult |v_node_create_~temp~0#1.base_106| |c_#StackHeapBarrier|))) (and (bvule |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4| (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|)) (forall ((|v_node_create_~temp~0#1.base_102| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_4|) (select (store (store (store |c_#length| |v_node_create_~temp~0#1.base_111| (_ bv8 32)) |v_node_create_~temp~0#1.base_106| (_ bv8 32)) |v_node_create_~temp~0#1.base_102| (_ bv8 32)) |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_12|)))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_111|))))) is different from true [2021-11-21 00:36:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 6 refuted. 13 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-21 00:36:28,877 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:36:28,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446475273] [2021-11-21 00:36:28,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446475273] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:36:28,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1051068854] [2021-11-21 00:36:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:28,879 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:36:28,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:36:28,887 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:36:28,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-21 00:36:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:29,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-21 00:36:29,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:36:29,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:36:30,637 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 9 treesize of output 7 [2021-11-21 00:36:30,858 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:36:30,859 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 15 treesize of output 17 [2021-11-21 00:36:31,284 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:36:31,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 13 [2021-11-21 00:36:33,756 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 00:36:33,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 28 [2021-11-21 00:36:38,205 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:36:38,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 13 [2021-11-21 00:36:38,533 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 00:36:38,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 32 treesize of output 37 [2021-11-21 00:36:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-21 00:36:38,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:39:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 15 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:39:38,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1051068854] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 00:39:38,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:39:38,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 11, 10] total 34 [2021-11-21 00:39:38,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744598746] [2021-11-21 00:39:38,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:38,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:39:38,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:39:38,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:39:38,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=880, Unknown=83, NotChecked=64, Total=1190 [2021-11-21 00:39:38,358 INFO L87 Difference]: Start difference. First operand 156 states and 170 transitions. Second operand has 9 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:39:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:39,210 INFO L93 Difference]: Finished difference Result 156 states and 170 transitions. [2021-11-21 00:39:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:39:39,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2021-11-21 00:39:39,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:39,213 INFO L225 Difference]: With dead ends: 156 [2021-11-21 00:39:39,213 INFO L226 Difference]: Without dead ends: 156 [2021-11-21 00:39:39,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 104 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 258.7s TimeCoverageRelationStatistics Valid=163, Invalid=880, Unknown=83, NotChecked=64, Total=1190 [2021-11-21 00:39:39,215 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 6 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:39,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 501 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 122 Unchecked, 0.8s Time] [2021-11-21 00:39:39,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-21 00:39:39,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2021-11-21 00:39:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 146 states have internal predecessors, (159), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 00:39:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2021-11-21 00:39:39,225 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 37 [2021-11-21 00:39:39,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:39,226 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2021-11-21 00:39:39,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:39:39,226 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2021-11-21 00:39:39,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-21 00:39:39,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:39,228 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:39:39,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-21 00:39:39,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-21 00:39:39,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:39:39,632 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-11-21 00:39:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash -362722266, now seen corresponding path program 1 times [2021-11-21 00:39:39,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:39:39,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400010029] [2021-11-21 00:39:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:39,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:39:39,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:39:39,635 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:39:39,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 00:39:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:39,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-21 00:39:39,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:39:40,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:39:40,740 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 21 treesize of output 17 [2021-11-21 00:39:43,572 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-21 00:39:43,572 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 63 treesize of output 51 [2021-11-21 00:39:43,648 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-21 00:39:43,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 48 treesize of output 59 [2021-11-21 00:39:44,052 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 00:39:44,052 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 61 treesize of output 45 [2021-11-21 00:39:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:39:44,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:39:52,977 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6|))))))) (_ bv1 1)))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6|))))))) (_ bv1 1))))) is different from false [2021-11-21 00:39:55,517 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6|))))))) (_ bv1 1)))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|)))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) (bvadd (_ bv4 32) |c_node_create_~temp~0#1.offset|) v_DerPreprocessor_2)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6|)))))))))))) is different from false [2021-11-21 00:39:57,698 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|node_create_~temp~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6|))))))) (_ bv1 1)))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |node_create_~temp~0#1.offset|) v_DerPreprocessor_2)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6|)))))))) (_ bv1 1))))) is different from false [2021-11-21 00:40:28,772 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 153 treesize of output 145 [2021-11-21 00:40:35,451 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:40:35,452 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 94 treesize of output 112 [2021-11-21 00:40:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2021-11-21 00:40:40,640 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:40:40,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400010029] [2021-11-21 00:40:40,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400010029] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:40:40,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [624379697] [2021-11-21 00:40:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:40:40,641 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:40:40,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:40:40,643 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:40:40,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-21 00:40:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:40:40,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-21 00:40:40,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:40:43,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:40:52,616 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 19 treesize of output 15 [2021-11-21 00:40:53,217 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-21 00:40:53,218 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 61 treesize of output 49 [2021-11-21 00:40:53,315 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-21 00:40:53,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 46 treesize of output 57 [2021-11-21 00:40:53,852 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 00:40:53,853 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 51 treesize of output 35 [2021-11-21 00:40:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:40:54,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:41:02,880 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8|)))))) (_ bv1 1))) (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8|))))))))))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|))))) is different from false [2021-11-21 00:41:05,407 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8|))))))))))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) (bvadd (_ bv4 32) |c_node_create_~temp~0#1.offset|) v_DerPreprocessor_4)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8|)))))) (_ bv1 1))))) is different from false [2021-11-21 00:41:07,670 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8| (_ BitVec 32)) (|node_create_~temp~0#1.offset| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8|))))))))))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |node_create_~temp~0#1.offset|) v_DerPreprocessor_4)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8|))))))) (_ bv1 1))))) is different from false [2021-11-21 00:41:29,003 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 145 treesize of output 137 [2021-11-21 00:41:32,769 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:41:32,769 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 94 treesize of output 112 [2021-11-21 00:41:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2021-11-21 00:41:33,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [624379697] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:41:33,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823015000] [2021-11-21 00:41:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:41:33,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:41:33,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:41:33,835 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:41:33,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2be4bd3-f0ab-42a1-aa6e-c088c43598d3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-21 00:41:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:41:34,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-21 00:41:34,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:41:34,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:41:34,524 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 19 treesize of output 15 [2021-11-21 00:41:35,165 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-21 00:41:35,166 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 65 treesize of output 53 [2021-11-21 00:41:35,260 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-21 00:41:35,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 50 treesize of output 61 [2021-11-21 00:41:35,715 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 00:41:35,716 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 61 treesize of output 45 [2021-11-21 00:41:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:41:36,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:42:53,715 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_10| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_14| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_14|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_10|))))))) (_ bv1 1)))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|)))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) (bvadd (_ bv4 32) |c_node_create_~temp~0#1.offset|) v_DerPreprocessor_6)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_14|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_10|))))))))))))))) is different from false [2021-11-21 00:42:55,927 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_10| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_14| (_ BitVec 32)) (|node_create_~temp~0#1.offset| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |node_create_~temp~0#1.offset|) v_DerPreprocessor_6)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_14|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_10|))))))))))))))) (_ bv1 1))) (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_14|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_10|))))))) (_ bv1 1)))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|)))))))) is different from false [2021-11-21 00:43:19,420 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 145 treesize of output 137 [2021-11-21 00:43:25,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:43:25,183 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 92 treesize of output 110 [2021-11-21 00:43:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 1 refuted. 3 times theorem prover too weak. 1 trivial. 3 not checked. [2021-11-21 00:43:27,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823015000] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:43:27,705 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 00:43:27,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17, 16, 17, 16] total 45 [2021-11-21 00:43:27,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786435500] [2021-11-21 00:43:27,706 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 00:43:27,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-21 00:43:27,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:43:27,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-21 00:43:27,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1208, Unknown=65, NotChecked=632, Total=2070 [2021-11-21 00:43:27,708 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand has 46 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 41 states have internal predecessors, (91), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-21 00:43:37,617 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_10| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_14| (_ BitVec 32)) (|node_create_~temp~0#1.offset| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |node_create_~temp~0#1.offset|) v_DerPreprocessor_6)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_14|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_10|))))))))))))))) (_ bv1 1))) (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_14|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_10|))))))) (_ bv1 1)))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|)))))))) (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8| (_ BitVec 32)) (|node_create_~temp~0#1.offset| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8|))))))))))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |node_create_~temp~0#1.offset|) v_DerPreprocessor_4)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_8|))))))) (_ bv1 1))))) (forall ((|v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|node_create_~temp~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (or (exists ((|v_node_create_~temp~0#1.base_128| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_node_create_~temp~0#1.offset_118| (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_node_create_~temp~0#1.base_128| (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_128|) |v_node_create_~temp~0#1.offset_118| (_ bv0 32)) (bvadd (_ bv4 32) |v_node_create_~temp~0#1.offset_118|) v_DerPreprocessor_1)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6|))))))) (_ bv1 1)))) (bvult |v_node_create_~temp~0#1.base_128| |c_#StackHeapBarrier|) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_node_create_~temp~0#1.base_128|)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset| (_ bv0 32)) (bvadd (_ bv4 32) |node_create_~temp~0#1.offset|) v_DerPreprocessor_2)) |v_ULTIMATE.start_sll_circular_insert_~head#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_sll_circular_insert_~head#1.offset_BEFORE_CALL_6|)))))))) (_ bv1 1))))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32))) (bvult |c_node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (= (store |c_old(#valid)| |c_node_create_~temp~0#1.base| (_ bv1 1)) |c_#valid|) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |c_node_create_~temp~0#1.base|)))) is different from false