./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2c_update_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_update_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b8a3c71378af91196ed2f84e64deb923f93cbb4 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_update_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b8a3c71378af91196ed2f84e64deb923f93cbb4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:04:29,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:04:29,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:04:29,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:04:29,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:04:29,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:04:29,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:04:29,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:04:29,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:04:29,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:04:29,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:04:29,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:04:29,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:04:29,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:04:29,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:04:29,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:04:29,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:04:29,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:04:29,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:04:29,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:04:29,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:04:29,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:04:29,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:04:29,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:04:29,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:04:29,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:04:29,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:04:29,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:04:29,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:04:29,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:04:29,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:04:29,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:04:29,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:04:29,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:04:29,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:04:29,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:04:29,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:04:29,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:04:29,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:04:29,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:04:29,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:04:29,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:04:29,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:04:29,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:04:29,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:04:29,927 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:04:29,927 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:04:29,927 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:04:29,928 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:04:29,928 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:04:29,928 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:04:29,928 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:04:29,928 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:04:29,929 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:04:29,929 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:04:29,929 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:04:29,929 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:04:29,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:04:29,930 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:04:29,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:04:29,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:04:29,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:04:29,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:04:29,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:04:29,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:04:29,931 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:04:29,932 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:04:29,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:04:29,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:04:29,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:04:29,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:04:29,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:04:29,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:04:29,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:04:29,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:04:29,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:04:29,934 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:04:29,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:04:29,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:04:29,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:04:29,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:04:29,935 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_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b8a3c71378af91196ed2f84e64deb923f93cbb4 [2021-10-13 08:04:30,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:04:30,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:04:30,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:04:30,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:04:30,187 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:04:30,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/list-simple/sll2c_update_all.i [2021-10-13 08:04:30,249 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/data/0349fdfd1/2ccd99a937ee41af8a95eb5753771d88/FLAG481bdcadd [2021-10-13 08:04:30,776 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:04:30,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/sv-benchmarks/c/list-simple/sll2c_update_all.i [2021-10-13 08:04:30,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/data/0349fdfd1/2ccd99a937ee41af8a95eb5753771d88/FLAG481bdcadd [2021-10-13 08:04:31,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/data/0349fdfd1/2ccd99a937ee41af8a95eb5753771d88 [2021-10-13 08:04:31,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:04:31,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:04:31,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:04:31,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:04:31,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:04:31,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bc05dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31, skipping insertion in model container [2021-10-13 08:04:31,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:04:31,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:04:31,532 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/sv-benchmarks/c/list-simple/sll2c_update_all.i[24418,24431] [2021-10-13 08:04:31,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:04:31,550 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:04:31,617 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/sv-benchmarks/c/list-simple/sll2c_update_all.i[24418,24431] [2021-10-13 08:04:31,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:04:31,653 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:04:31,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31 WrapperNode [2021-10-13 08:04:31,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:04:31,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:04:31,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:04:31,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:04:31,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:04:31,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:04:31,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:04:31,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:04:31,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:04:31,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:04:31,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:04:31,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:04:31,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (1/1) ... [2021-10-13 08:04:31,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:04:31,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:31,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:04:31,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:04:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 08:04:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 08:04:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:04:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 08:04:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:04:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 08:04:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:04:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:04:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:04:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:04:32,445 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:04:32,445 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-13 08:04:32,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:04:32 BoogieIcfgContainer [2021-10-13 08:04:32,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:04:32,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:04:32,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:04:32,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:04:32,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:04:31" (1/3) ... [2021-10-13 08:04:32,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a700d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:04:32, skipping insertion in model container [2021-10-13 08:04:32,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:31" (2/3) ... [2021-10-13 08:04:32,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a700d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:04:32, skipping insertion in model container [2021-10-13 08:04:32,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:04:32" (3/3) ... [2021-10-13 08:04:32,458 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_update_all.i [2021-10-13 08:04:32,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:04:32,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:04:32,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:04:32,528 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:04:32,528 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:04:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:32,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:04:32,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:32,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:32,543 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:32,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1750896396, now seen corresponding path program 1 times [2021-10-13 08:04:32,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:32,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80690653] [2021-10-13 08:04:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:32,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:32,771 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:32,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80690653] [2021-10-13 08:04:32,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80690653] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:32,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:32,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:04:32,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651636942] [2021-10-13 08:04:32,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:04:32,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:04:32,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:32,800 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:32,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:32,846 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2021-10-13 08:04:32,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:04:32,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 08:04:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:32,856 INFO L225 Difference]: With dead ends: 33 [2021-10-13 08:04:32,856 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 08:04:32,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 08:04:32,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-13 08:04:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-10-13 08:04:32,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 8 [2021-10-13 08:04:32,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:32,890 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-10-13 08:04:32,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:32,891 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2021-10-13 08:04:32,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:04:32,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:32,892 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:32,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:04:32,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:32,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:32,895 INFO L82 PathProgramCache]: Analyzing trace with hash 323590111, now seen corresponding path program 1 times [2021-10-13 08:04:32,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:32,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69748676] [2021-10-13 08:04:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:32,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:33,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:33,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69748676] [2021-10-13 08:04:33,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69748676] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:33,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:33,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:04:33,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513619411] [2021-10-13 08:04:33,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:04:33,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:33,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:04:33,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:04:33,028 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:33,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:33,051 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2021-10-13 08:04:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:04:33,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 08:04:33,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:33,052 INFO L225 Difference]: With dead ends: 24 [2021-10-13 08:04:33,053 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 08:04:33,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:04:33,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 08:04:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-10-13 08:04:33,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-10-13 08:04:33,058 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 10 [2021-10-13 08:04:33,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:33,058 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-13 08:04:33,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:33,059 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-10-13 08:04:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 08:04:33,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:33,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:33,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:04:33,060 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:33,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1526021095, now seen corresponding path program 1 times [2021-10-13 08:04:33,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:33,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304343567] [2021-10-13 08:04:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:33,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:33,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:33,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304343567] [2021-10-13 08:04:33,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304343567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:04:33,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231742974] [2021-10-13 08:04:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:33,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:33,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:33,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:04:33,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:04:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:33,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:04:33,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:33,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:33,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231742974] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:33,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1558540164] [2021-10-13 08:04:33,564 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-13 08:04:33,564 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:04:33,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:04:33,576 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:04:33,576 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:04:33,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:04:33,622 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:04:33,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:04:33,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 08:04:33,628 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:04:33,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:04:33,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 08:04:33,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-10-13 08:04:33,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:04:33,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:04:33,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:04:33,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:04:33,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:04:33,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:04:33,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:04:33,716 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-13 08:04:33,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 34 [2021-10-13 08:04:33,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:04:33,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 08:04:33,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:04:33,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 08:04:33,729 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:04:33,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:04:33,793 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:04:33,796 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:04:33,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-13 08:04:33,799 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 08:04:33,800 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:140, output treesize:116 [2021-10-13 08:04:33,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:34,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:34,015 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_15| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:04:34,019 INFO L168 Benchmark]: Toolchain (without parser) took 2903.11 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 73.3 MB in the beginning and 103.9 MB in the end (delta: -30.5 MB). Peak memory consumption was 44.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:34,019 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:04:34,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.12 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 73.3 MB in the beginning and 101.7 MB in the end (delta: -28.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:34,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.49 ms. Allocated memory is still 134.2 MB. Free memory was 101.7 MB in the beginning and 99.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:34,022 INFO L168 Benchmark]: Boogie Preprocessor took 53.88 ms. Allocated memory is still 134.2 MB. Free memory was 99.6 MB in the beginning and 98.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:04:34,022 INFO L168 Benchmark]: RCFGBuilder took 660.03 ms. Allocated memory is still 134.2 MB. Free memory was 98.0 MB in the beginning and 77.6 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:34,023 INFO L168 Benchmark]: TraceAbstraction took 1568.70 ms. Allocated memory is still 134.2 MB. Free memory was 77.1 MB in the beginning and 103.9 MB in the end (delta: -26.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:34,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 535.12 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 73.3 MB in the beginning and 101.7 MB in the end (delta: -28.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.49 ms. Allocated memory is still 134.2 MB. Free memory was 101.7 MB in the beginning and 99.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.88 ms. Allocated memory is still 134.2 MB. Free memory was 99.6 MB in the beginning and 98.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 660.03 ms. Allocated memory is still 134.2 MB. Free memory was 98.0 MB in the beginning and 77.6 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1568.70 ms. Allocated memory is still 134.2 MB. Free memory was 77.1 MB in the beginning and 103.9 MB in the end (delta: -26.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_15| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_15|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:04:34,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:04:36,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:04:36,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:04:36,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:04:36,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:04:36,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:04:36,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:04:36,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:04:36,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:04:36,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:04:36,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:04:36,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:04:36,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:04:36,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:04:36,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:04:36,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:04:36,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:04:36,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:04:36,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:04:37,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:04:37,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:04:37,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:04:37,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:04:37,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:04:37,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:04:37,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:04:37,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:04:37,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:04:37,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:04:37,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:04:37,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:04:37,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:04:37,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:04:37,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:04:37,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:04:37,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:04:37,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:04:37,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:04:37,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:04:37,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:04:37,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:04:37,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:04:37,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:04:37,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:04:37,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:04:37,106 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:04:37,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:04:37,106 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:04:37,106 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:04:37,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:04:37,107 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:04:37,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:04:37,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:04:37,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:04:37,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:04:37,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:04:37,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:04:37,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:04:37,112 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:04:37,112 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:04:37,112 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:04:37,112 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:04:37,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:04:37,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:04:37,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:04:37,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:04:37,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:04:37,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:04:37,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:04:37,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:04:37,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:04:37,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:04:37,115 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:04:37,116 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:37,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:04:37,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:04:37,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:04:37,117 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_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b8a3c71378af91196ed2f84e64deb923f93cbb4 [2021-10-13 08:04:37,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:04:37,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:04:37,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:04:37,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:04:37,597 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:04:37,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/list-simple/sll2c_update_all.i [2021-10-13 08:04:37,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/data/9297c937b/09d0cd156e4a418d8deff25ea4a498ef/FLAG7a52cac9b [2021-10-13 08:04:38,500 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:04:38,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/sv-benchmarks/c/list-simple/sll2c_update_all.i [2021-10-13 08:04:38,536 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/data/9297c937b/09d0cd156e4a418d8deff25ea4a498ef/FLAG7a52cac9b [2021-10-13 08:04:38,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/data/9297c937b/09d0cd156e4a418d8deff25ea4a498ef [2021-10-13 08:04:38,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:04:38,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:04:38,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:04:38,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:04:38,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:04:38,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:04:38" (1/1) ... [2021-10-13 08:04:38,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a4c489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:38, skipping insertion in model container [2021-10-13 08:04:38,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:04:38" (1/1) ... [2021-10-13 08:04:38,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:04:38,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:04:39,156 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/sv-benchmarks/c/list-simple/sll2c_update_all.i[24418,24431] [2021-10-13 08:04:39,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:04:39,182 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:04:39,267 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/sv-benchmarks/c/list-simple/sll2c_update_all.i[24418,24431] [2021-10-13 08:04:39,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:04:39,348 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:04:39,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39 WrapperNode [2021-10-13 08:04:39,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:04:39,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:04:39,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:04:39,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:04:39,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (1/1) ... [2021-10-13 08:04:39,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (1/1) ... [2021-10-13 08:04:39,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:04:39,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:04:39,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:04:39,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:04:39,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (1/1) ... [2021-10-13 08:04:39,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (1/1) ... [2021-10-13 08:04:39,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (1/1) ... [2021-10-13 08:04:39,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (1/1) ... [2021-10-13 08:04:39,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (1/1) ... [2021-10-13 08:04:39,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (1/1) ... [2021-10-13 08:04:39,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (1/1) ... [2021-10-13 08:04:39,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:04:39,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:04:39,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:04:39,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:04:39,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (1/1) ... [2021-10-13 08:04:39,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:04:39,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:39,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:04:39,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:04:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 08:04:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:04:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 08:04:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:04:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 08:04:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:04:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 08:04:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:04:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:04:39,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:04:40,194 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:04:40,194 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-13 08:04:40,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:04:40 BoogieIcfgContainer [2021-10-13 08:04:40,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:04:40,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:04:40,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:04:40,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:04:40,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:04:38" (1/3) ... [2021-10-13 08:04:40,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4081c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:04:40, skipping insertion in model container [2021-10-13 08:04:40,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:39" (2/3) ... [2021-10-13 08:04:40,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4081c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:04:40, skipping insertion in model container [2021-10-13 08:04:40,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:04:40" (3/3) ... [2021-10-13 08:04:40,207 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_update_all.i [2021-10-13 08:04:40,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:04:40,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:04:40,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:04:40,282 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:04:40,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:04:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 08:04:40,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:40,308 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:40,308 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:40,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:40,316 INFO L82 PathProgramCache]: Analyzing trace with hash 680767129, now seen corresponding path program 1 times [2021-10-13 08:04:40,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:40,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627264055] [2021-10-13 08:04:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:40,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:40,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:40,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:40,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:04:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:40,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:04:40,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:40,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:40,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:40,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627264055] [2021-10-13 08:04:40,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627264055] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:40,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:40,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:04:40,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497220873] [2021-10-13 08:04:40,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:04:40,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:40,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:04:40,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:04:40,643 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:40,660 INFO L93 Difference]: Finished difference Result 57 states and 83 transitions. [2021-10-13 08:04:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:04:40,662 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 08:04:40,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:40,669 INFO L225 Difference]: With dead ends: 57 [2021-10-13 08:04:40,669 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 08:04:40,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:04:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 08:04:40,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-13 08:04:40,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-13 08:04:40,705 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2021-10-13 08:04:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:40,705 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-13 08:04:40,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-13 08:04:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 08:04:40,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:40,707 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:40,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:40,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:40,921 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:40,922 INFO L82 PathProgramCache]: Analyzing trace with hash 68282379, now seen corresponding path program 1 times [2021-10-13 08:04:40,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:40,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397990520] [2021-10-13 08:04:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:40,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:40,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:40,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:40,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:04:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:41,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:04:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:41,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:41,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:41,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397990520] [2021-10-13 08:04:41,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397990520] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:41,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:41,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:04:41,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108212116] [2021-10-13 08:04:41,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:04:41,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:41,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:04:41,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:04:41,261 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:41,310 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2021-10-13 08:04:41,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:04:41,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 08:04:41,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:41,313 INFO L225 Difference]: With dead ends: 43 [2021-10-13 08:04:41,313 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 08:04:41,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:04:41,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 08:04:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-10-13 08:04:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-10-13 08:04:41,320 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2021-10-13 08:04:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:41,320 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-13 08:04:41,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:41,320 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-10-13 08:04:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 08:04:41,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:41,321 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:41,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:41,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:41,541 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:41,545 INFO L82 PathProgramCache]: Analyzing trace with hash -301628989, now seen corresponding path program 1 times [2021-10-13 08:04:41,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:41,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211521821] [2021-10-13 08:04:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:41,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:41,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:41,566 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:41,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:04:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:41,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:04:41,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:41,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:41,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:41,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211521821] [2021-10-13 08:04:41,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211521821] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:41,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:41,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 08:04:41,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875969285] [2021-10-13 08:04:41,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:04:41,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:04:41,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:04:41,951 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:42,033 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-10-13 08:04:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:04:42,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 08:04:42,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:42,039 INFO L225 Difference]: With dead ends: 48 [2021-10-13 08:04:42,039 INFO L226 Difference]: Without dead ends: 39 [2021-10-13 08:04:42,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:04:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-13 08:04:42,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2021-10-13 08:04:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-13 08:04:42,048 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 20 [2021-10-13 08:04:42,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:42,048 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-13 08:04:42,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:42,049 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-13 08:04:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 08:04:42,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:42,050 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:42,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 08:04:42,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:42,261 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:42,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:42,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1046019817, now seen corresponding path program 1 times [2021-10-13 08:04:42,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:42,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409680523] [2021-10-13 08:04:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:42,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:42,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:42,268 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:42,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:04:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:42,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:04:42,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:42,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:42,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:04:42,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409680523] [2021-10-13 08:04:42,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409680523] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:42,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [251722445] [2021-10-13 08:04:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:42,715 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:04:42,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:04:42,719 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:04:42,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 08:04:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:42,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:04:42,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:43,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:43,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [251722445] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:43,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742777579] [2021-10-13 08:04:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:43,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:43,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:43,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:04:43,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 08:04:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:43,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:04:43,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:43,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:04:43,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742777579] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:43,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:04:43,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-13 08:04:43,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736577566] [2021-10-13 08:04:43,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:04:43,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:04:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:04:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:04:43,510 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:43,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:43,673 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2021-10-13 08:04:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:04:43,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 08:04:43,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:43,675 INFO L225 Difference]: With dead ends: 67 [2021-10-13 08:04:43,675 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 08:04:43,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 88.9ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-13 08:04:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 08:04:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2021-10-13 08:04:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-10-13 08:04:43,688 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 28 [2021-10-13 08:04:43,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:43,688 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-10-13 08:04:43,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:04:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-10-13 08:04:43,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 08:04:43,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:43,692 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:43,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:43,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:44,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:04:44,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:04:44,300 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:44,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:44,300 INFO L82 PathProgramCache]: Analyzing trace with hash -194998021, now seen corresponding path program 1 times [2021-10-13 08:04:44,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:04:44,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129696605] [2021-10-13 08:04:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:44,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:04:44,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:04:44,302 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:04:44,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 08:04:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:44,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 08:04:44,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:04:44,601 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 [2021-10-13 08:04:44,684 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:04:44,685 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 23 treesize of output 23 [2021-10-13 08:04:44,783 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 [2021-10-13 08:04:44,865 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:04:44,865 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-10-13 08:04:45,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-13 08:04:45,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:04:45,193 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:04:45,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 25 [2021-10-13 08:04:45,447 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 08:04:45,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 14 [2021-10-13 08:04:45,552 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-13 08:04:45,552 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 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 08:04:45,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 08:04:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:45,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:18,852 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_sll_circular_update_at_~head.offset_14 (_ BitVec 32)) (ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32))) (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~s~0.base) c_ULTIMATE.start_main_~s~0.offset))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) (bvadd (_ bv4 32) v_ULTIMATE.start_sll_circular_update_at_~head.offset_14) ULTIMATE.start_sll_circular_update_at_~data))) c_ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~s~0.offset)) c_ULTIMATE.start_main_~len~0)) is different from false [2021-10-13 08:05:18,886 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 132 treesize of output 126 [2021-10-13 08:05:18,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:18,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-10-13 08:05:20,586 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset c_ULTIMATE.start_sll_circular_create_~head~0.base)) c_ULTIMATE.start_sll_circular_create_~head~0.base) (bvadd c_ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)) v_DerPreprocessor_1) c_ULTIMATE.start_sll_circular_create_~head~0.offset) c_ULTIMATE.start_sll_circular_create_~head~0.base))) is different from false [2021-10-13 08:05:20,637 INFO L354 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2021-10-13 08:05:20,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 37 treesize of output 40 [2021-10-13 08:05:20,649 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:20,649 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 40 treesize of output 42 [2021-10-13 08:05:20,700 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 6 treesize of output 4 [2021-10-13 08:05:20,723 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:20,723 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 51 treesize of output 53 [2021-10-13 08:05:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-10-13 08:05:21,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:21,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129696605] [2021-10-13 08:05:21,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129696605] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:21,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [762908834] [2021-10-13 08:05:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:21,034 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:05:21,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:05:21,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:05:21,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 08:05:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:21,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 08:05:21,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:21,437 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 [2021-10-13 08:05:21,702 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:05:21,703 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 17 [2021-10-13 08:05:21,920 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 [2021-10-13 08:05:22,054 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:05:22,054 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-10-13 08:05:22,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-13 08:05:22,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:05:22,577 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:05:22,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 25 [2021-10-13 08:05:22,963 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 08:05:22,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 14 [2021-10-13 08:05:23,137 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-13 08:05:23,138 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 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 08:05:23,522 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 22 treesize of output 10 [2021-10-13 08:05:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:23,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:31,573 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 132 treesize of output 126 [2021-10-13 08:05:31,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:31,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-10-13 08:05:31,882 INFO L354 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2021-10-13 08:05:31,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 37 treesize of output 40 [2021-10-13 08:05:31,893 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:31,894 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 40 treesize of output 42 [2021-10-13 08:05:31,947 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 6 treesize of output 4 [2021-10-13 08:05:31,972 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:31,972 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 51 treesize of output 53 [2021-10-13 08:05:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-10-13 08:05:32,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [762908834] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:32,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199152074] [2021-10-13 08:05:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:32,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:32,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:05:32,075 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:05:32,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 08:05:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:32,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 08:05:32,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:32,364 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 [2021-10-13 08:05:32,708 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:05:32,708 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 19 treesize of output 19 [2021-10-13 08:05:32,774 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 [2021-10-13 08:05:32,826 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:05:32,827 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-10-13 08:05:32,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-13 08:05:32,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:05:32,972 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:05:32,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 25 [2021-10-13 08:05:33,075 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 08:05:33,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 14 [2021-10-13 08:05:33,128 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-13 08:05:33,129 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 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 08:05:33,212 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 22 treesize of output 10 [2021-10-13 08:05:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:33,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:39,457 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 132 treesize of output 126 [2021-10-13 08:05:39,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:39,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-10-13 08:05:39,753 INFO L354 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2021-10-13 08:05:39,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 37 treesize of output 40 [2021-10-13 08:05:39,768 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:39,769 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 40 treesize of output 42 [2021-10-13 08:05:39,813 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 6 treesize of output 4 [2021-10-13 08:05:39,839 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:39,840 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 51 treesize of output 53 [2021-10-13 08:05:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-10-13 08:05:40,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199152074] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:40,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:05:40,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19, 19, 19, 19] total 55 [2021-10-13 08:05:40,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077735129] [2021-10-13 08:05:40,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-13 08:05:40,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:40,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-13 08:05:40,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2561, Unknown=15, NotChecked=206, Total=2970 [2021-10-13 08:05:40,157 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 55 states, 55 states have (on average 1.6) internal successors, (88), 55 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:05:43,034 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_sll_circular_create_~head~0.base)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_node_create_#res.base|))) (_ bv1 1))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| c_ULTIMATE.start_node_create_~temp~0.base)))) (= c_ULTIMATE.start_main_~len~0 (_ bv2 32)) (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset c_ULTIMATE.start_sll_circular_create_~head~0.base)) c_ULTIMATE.start_sll_circular_create_~head~0.base) (bvadd c_ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)) v_DerPreprocessor_1) c_ULTIMATE.start_sll_circular_create_~head~0.offset) c_ULTIMATE.start_sll_circular_create_~head~0.base))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_sll_circular_create_~last~0.base))))))) is different from false [2021-10-13 08:06:21,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:06:21,571 INFO L93 Difference]: Finished difference Result 184 states and 221 transitions. [2021-10-13 08:06:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 08:06:21,572 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.6) internal successors, (88), 55 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-13 08:06:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:06:21,574 INFO L225 Difference]: With dead ends: 184 [2021-10-13 08:06:21,574 INFO L226 Difference]: Without dead ends: 182 [2021-10-13 08:06:21,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 90 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 63534.8ms TimeCoverageRelationStatistics Valid=843, Invalid=6985, Unknown=16, NotChecked=528, Total=8372 [2021-10-13 08:06:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-13 08:06:21,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 61. [2021-10-13 08:06:21,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2021-10-13 08:06:21,613 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 29 [2021-10-13 08:06:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:06:21,613 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2021-10-13 08:06:21,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.6) internal successors, (88), 55 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2021-10-13 08:06:21,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:06:21,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:06:21,615 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:06:21,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:21,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:22,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-13 08:06:22,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:06:22,240 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:06:22,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:06:22,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1698317453, now seen corresponding path program 1 times [2021-10-13 08:06:22,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:06:22,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243461790] [2021-10-13 08:06:22,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:22,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:06:22,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:06:22,242 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:06:22,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 08:06:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:22,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:06:22,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:06:22,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:06:22,712 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:06:22,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243461790] [2021-10-13 08:06:22,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243461790] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:06:22,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:06:22,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 08:06:22,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514479559] [2021-10-13 08:06:22,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:06:22,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:06:22,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:06:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:06:22,714 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:06:22,776 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2021-10-13 08:06:22,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:06:22,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 08:06:22,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:06:22,778 INFO L225 Difference]: With dead ends: 78 [2021-10-13 08:06:22,778 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 08:06:22,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:06:22,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 08:06:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2021-10-13 08:06:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 62 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2021-10-13 08:06:22,794 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 30 [2021-10-13 08:06:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:06:22,794 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2021-10-13 08:06:22,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:22,795 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2021-10-13 08:06:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:06:22,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:06:22,796 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:06:22,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:23,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:06:23,012 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:06:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:06:23,012 INFO L82 PathProgramCache]: Analyzing trace with hash 416873879, now seen corresponding path program 2 times [2021-10-13 08:06:23,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:06:23,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644446330] [2021-10-13 08:06:23,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:06:23,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:06:23,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:06:23,014 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:06:23,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 08:06:23,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:06:23,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:06:23,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:06:23,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:06:23,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:06:23,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:06:23,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644446330] [2021-10-13 08:06:23,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644446330] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:23,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2140638543] [2021-10-13 08:06:23,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:06:23,544 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:06:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:06:23,545 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:06:23,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-13 08:06:24,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:06:24,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:06:24,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:06:24,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:06:24,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:06:24,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2140638543] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:24,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845286306] [2021-10-13 08:06:24,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:06:24,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:06:24,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:06:24,179 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:06:24,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 08:06:24,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:06:24,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:06:24,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:06:24,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:06:24,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:06:24,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845286306] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:24,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:06:24,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 15 [2021-10-13 08:06:24,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271457411] [2021-10-13 08:06:24,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 08:06:24,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:06:24,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 08:06:24,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-13 08:06:24,903 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:06:25,596 INFO L93 Difference]: Finished difference Result 172 states and 202 transitions. [2021-10-13 08:06:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 08:06:25,597 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 08:06:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:06:25,598 INFO L225 Difference]: With dead ends: 172 [2021-10-13 08:06:25,598 INFO L226 Difference]: Without dead ends: 152 [2021-10-13 08:06:25,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 630.7ms TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2021-10-13 08:06:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-13 08:06:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 76. [2021-10-13 08:06:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 75 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2021-10-13 08:06:25,623 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 30 [2021-10-13 08:06:25,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:06:25,623 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2021-10-13 08:06:25,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:25,624 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2021-10-13 08:06:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 08:06:25,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:06:25,625 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:06:25,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:25,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:26,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:26,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:06:26,239 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:06:26,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:06:26,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2096269638, now seen corresponding path program 1 times [2021-10-13 08:06:26,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:06:26,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216622217] [2021-10-13 08:06:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:26,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:06:26,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:06:26,242 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:06:26,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 08:06:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:26,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:06:26,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:06:26,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:06:26,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:06:26,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216622217] [2021-10-13 08:06:26,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216622217] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:26,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1029985445] [2021-10-13 08:06:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:26,751 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:06:26,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:06:26,755 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:06:26,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-13 08:06:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:27,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:06:27,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:06:27,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:06:27,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1029985445] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:27,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61086949] [2021-10-13 08:06:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:27,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:06:27,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:06:27,388 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:06:27,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 08:06:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:27,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:06:27,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:06:27,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:06:27,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61086949] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:27,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:06:27,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-13 08:06:27,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088446100] [2021-10-13 08:06:27,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:06:27,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:06:27,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:06:27,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:06:27,945 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:06:28,101 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2021-10-13 08:06:28,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:06:28,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 08:06:28,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:06:28,103 INFO L225 Difference]: With dead ends: 102 [2021-10-13 08:06:28,103 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 08:06:28,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.6ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-13 08:06:28,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 08:06:28,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2021-10-13 08:06:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 76 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2021-10-13 08:06:28,125 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 35 [2021-10-13 08:06:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:06:28,126 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2021-10-13 08:06:28,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2021-10-13 08:06:28,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 08:06:28,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:06:28,128 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 08:06:28,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:28,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:28,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:28,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:06:28,744 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:06:28,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:06:28,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1302607909, now seen corresponding path program 3 times [2021-10-13 08:06:28,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:06:28,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480831390] [2021-10-13 08:06:28,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 08:06:28,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:06:28,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:06:28,751 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:06:28,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 08:06:29,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 08:06:29,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:06:29,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:06:29,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:06:29,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:06:29,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:06:29,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480831390] [2021-10-13 08:06:29,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480831390] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:29,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [295686287] [2021-10-13 08:06:29,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 08:06:29,836 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:06:29,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:06:29,838 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:06:29,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-13 08:06:30,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:06:30,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008963857] [2021-10-13 08:06:30,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 08:06:30,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 1 [2021-10-13 08:06:30,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:06:30,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:06:30,382 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:06:30,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 08:06:31,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 08:06:31,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:06:31,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:06:31,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 08:06:31,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:06:32,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008963857] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:32,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-13 08:06:32,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6, 7] total 17 [2021-10-13 08:06:32,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591410626] [2021-10-13 08:06:32,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 08:06:32,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:06:32,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 08:06:32,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-13 08:06:32,071 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:06:32,226 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2021-10-13 08:06:32,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:06:32,227 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 08:06:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:06:32,227 INFO L225 Difference]: With dead ends: 96 [2021-10-13 08:06:32,227 INFO L226 Difference]: Without dead ends: 69 [2021-10-13 08:06:32,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 317.4ms TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-10-13 08:06:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-13 08:06:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-10-13 08:06:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2021-10-13 08:06:32,242 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 35 [2021-10-13 08:06:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:06:32,242 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2021-10-13 08:06:32,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:06:32,243 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2021-10-13 08:06:32,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 08:06:32,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:06:32,244 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:06:32,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:32,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:32,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:06:32,659 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:06:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:06:32,660 INFO L82 PathProgramCache]: Analyzing trace with hash 611503240, now seen corresponding path program 1 times [2021-10-13 08:06:32,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:06:32,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811250056] [2021-10-13 08:06:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:32,660 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:06:32,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:06:32,661 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:06:32,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 08:06:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:33,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-13 08:06:33,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:33,162 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 [2021-10-13 08:06:33,207 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:06:33,207 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 17 [2021-10-13 08:06:33,286 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 [2021-10-13 08:06:33,351 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:06:33,352 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-10-13 08:06:33,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:06:33,586 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:06:33,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 25 [2021-10-13 08:06:33,961 INFO L354 Elim1Store]: treesize reduction 159, result has 15.0 percent of original size [2021-10-13 08:06:33,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 110 [2021-10-13 08:06:33,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 96 treesize of output 88 [2021-10-13 08:06:33,986 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-13 08:06:33,986 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 74 [2021-10-13 08:06:34,490 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 40 treesize of output 28 [2021-10-13 08:06:34,494 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 25 treesize of output 17 [2021-10-13 08:06:34,583 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 7 [2021-10-13 08:06:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:34,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:35,193 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 106 treesize of output 92 [2021-10-13 08:06:35,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:06:35,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-13 08:06:35,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:06:35,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-13 08:06:35,447 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:06:35,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 47 [2021-10-13 08:06:35,497 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 33 treesize of output 29 [2021-10-13 08:06:35,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:06:35,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 08:06:37,097 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (not (= (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset c_ULTIMATE.start_sll_circular_create_~head~0.base)) c_ULTIMATE.start_sll_circular_create_~head~0.base) c_ULTIMATE.start_sll_circular_create_~head~0.offset) c_ULTIMATE.start_sll_circular_create_~head~0.base))) is different from false [2021-10-13 08:06:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 08:06:37,358 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:06:37,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811250056] [2021-10-13 08:06:37,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811250056] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:37,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [218473544] [2021-10-13 08:06:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:37,358 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:06:37,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:06:37,371 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:06:37,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-13 08:06:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:38,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-13 08:06:38,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:38,228 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 [2021-10-13 08:06:38,524 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:06:38,524 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 18 treesize of output 18 [2021-10-13 08:06:38,765 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 [2021-10-13 08:06:38,771 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 [2021-10-13 08:06:38,932 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:06:38,932 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 40 [2021-10-13 08:06:38,949 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-13 08:06:38,949 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 1 case distinctions, treesize of input 46 treesize of output 41 [2021-10-13 08:06:39,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:06:39,600 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:06:39,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 58 [2021-10-13 08:06:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:06:39,620 INFO L354 Elim1Store]: treesize reduction 63, result has 14.9 percent of original size [2021-10-13 08:06:39,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 44 [2021-10-13 08:06:40,305 INFO L354 Elim1Store]: treesize reduction 155, result has 17.1 percent of original size [2021-10-13 08:06:40,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 128 [2021-10-13 08:06:40,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 114 treesize of output 106 [2021-10-13 08:06:40,368 INFO L354 Elim1Store]: treesize reduction 169, result has 15.1 percent of original size [2021-10-13 08:06:40,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 102 [2021-10-13 08:06:41,132 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 47 treesize of output 35 [2021-10-13 08:06:41,137 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 32 treesize of output 20 [2021-10-13 08:06:41,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 08:06:41,427 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:41,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:41,520 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 106 treesize of output 92 [2021-10-13 08:06:41,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:06:41,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-13 08:06:41,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:06:41,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-13 08:06:42,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:06:42,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-13 08:06:42,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:06:42,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-13 08:07:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:06,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [218473544] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:06,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689802057] [2021-10-13 08:07:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:06,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:07:06,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:06,998 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:07:06,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 08:07:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:07,717 WARN L261 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-13 08:07:07,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:07,730 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 [2021-10-13 08:07:08,269 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:07:08,269 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 17 [2021-10-13 08:07:08,598 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 [2021-10-13 08:07:08,795 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:07:08,795 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 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 08:07:09,601 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-10-13 08:07:09,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 31 [2021-10-13 08:07:10,702 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:07:10,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 109 [2021-10-13 08:07:10,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 96 treesize of output 88 [2021-10-13 08:07:10,795 INFO L354 Elim1Store]: treesize reduction 150, result has 16.7 percent of original size [2021-10-13 08:07:10,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 87 [2021-10-13 08:07:13,638 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 75 treesize of output 59 [2021-10-13 08:07:13,642 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 56 treesize of output 48 [2021-10-13 08:07:14,105 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:07:14,105 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 37 treesize of output 21 [2021-10-13 08:07:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:14,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:17,230 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:17,230 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 146 treesize of output 149 [2021-10-13 08:07:17,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:17,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-13 08:07:17,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:17,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-10-13 08:07:18,180 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:18,181 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 115 treesize of output 94 [2021-10-13 08:07:18,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_DerPreprocessor_12 [2021-10-13 08:07:18,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-13 08:07:18,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21, 21] total 65 [2021-10-13 08:07:18,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674625089] [2021-10-13 08:07:18,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-13 08:07:18,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:18,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-13 08:07:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=8235, Unknown=10, NotChecked=184, Total=8930 [2021-10-13 08:07:18,624 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 65 states, 65 states have (on average 1.7538461538461538) internal successors, (114), 65 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:52,720 WARN L207 SmtUtils]: Spent 27.07 s on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-10-13 08:10:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:10:08,091 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2021-10-13 08:10:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 08:10:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7538461538461538) internal successors, (114), 65 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 08:10:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:10:08,093 INFO L225 Difference]: With dead ends: 106 [2021-10-13 08:10:08,093 INFO L226 Difference]: Without dead ends: 98 [2021-10-13 08:10:08,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 94 SyntacticMatches, 6 SemanticMatches, 132 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5262 ImplicationChecksByTransitivity, 184594.3ms TimeCoverageRelationStatistics Valid=1604, Invalid=15903, Unknown=53, NotChecked=262, Total=17822 [2021-10-13 08:10:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-13 08:10:08,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 68. [2021-10-13 08:10:08,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-10-13 08:10:08,119 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 36 [2021-10-13 08:10:08,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:10:08,120 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-10-13 08:10:08,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7538461538461538) internal successors, (114), 65 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-10-13 08:10:08,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 08:10:08,121 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:08,121 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:10:08,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:08,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:08,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:08,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:10:08,740 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:10:08,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1828385158, now seen corresponding path program 2 times [2021-10-13 08:10:08,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:08,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354526939] [2021-10-13 08:10:08,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:10:08,741 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:08,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:08,743 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:08,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 08:10:09,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:10:09,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:10:09,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:10:09,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:10:09,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:10:09,614 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:10:09,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354526939] [2021-10-13 08:10:09,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354526939] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:09,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [644992714] [2021-10-13 08:10:09,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:10:09,614 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:09,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:10:09,615 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:10:09,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-13 08:10:10,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:10:10,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:10:10,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:10:10,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:10:10,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:10:10,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [644992714] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:10,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518334674] [2021-10-13 08:10:10,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:10:10,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:10:10,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:10:10,635 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:10:10,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 08:10:11,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:10:11,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:10:11,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:10:11,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:10:11,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 08:10:11,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518334674] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:11,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:10:11,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 15 [2021-10-13 08:10:11,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940674239] [2021-10-13 08:10:11,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 08:10:11,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:10:11,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 08:10:11,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-13 08:10:11,900 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:10:12,044 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2021-10-13 08:10:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:10:12,045 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 08:10:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:10:12,046 INFO L225 Difference]: With dead ends: 70 [2021-10-13 08:10:12,046 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 08:10:12,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 308.8ms TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-13 08:10:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 08:10:12,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-13 08:10:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-13 08:10:12,061 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 37 [2021-10-13 08:10:12,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:10:12,061 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-13 08:10:12,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:12,062 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-13 08:10:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 08:10:12,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:12,063 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:10:12,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:12,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:12,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-10-13 08:10:12,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:12,683 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:10:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:12,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1103709997, now seen corresponding path program 4 times [2021-10-13 08:10:12,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:12,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025083003] [2021-10-13 08:10:12,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 08:10:12,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:12,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:12,685 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:12,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 08:10:13,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 08:10:13,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:10:13,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:10:13,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 08:10:13,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 08:10:13,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:10:13,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025083003] [2021-10-13 08:10:13,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025083003] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:13,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [465623263] [2021-10-13 08:10:13,604 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 08:10:13,604 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:13,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:10:13,605 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:10:13,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-10-13 08:10:14,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 08:10:14,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:10:14,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:10:14,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 08:10:14,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 08:10:14,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [465623263] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:14,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358785481] [2021-10-13 08:10:14,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 08:10:14,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:10:14,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:10:14,731 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:10:14,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 08:10:15,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 08:10:15,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:10:15,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:10:15,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 08:10:15,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 08:10:15,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358785481] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:15,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:10:15,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 08:10:15,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141388050] [2021-10-13 08:10:15,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:10:15,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:10:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:10:15,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:10:15,767 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:10:15,795 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-13 08:10:15,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:10:15,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-13 08:10:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:10:15,797 INFO L225 Difference]: With dead ends: 42 [2021-10-13 08:10:15,797 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:10:15,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:10:15,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:10:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:10:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:10:15,798 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-10-13 08:10:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:10:15,799 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:10:15,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:10:15,799 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:10:15,801 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:10:15,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:16,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:16,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:16,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:16,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:10:16,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:16,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:16,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:16,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:16,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:16,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:16,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:16,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:16,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:16,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:17,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:17,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:17,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:17,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:57,160 WARN L207 SmtUtils]: Spent 1.61 m on a formula simplification. DAG size of input: 237 DAG size of output: 154 [2021-10-13 08:12:03,177 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification. DAG size of input: 226 DAG size of output: 132 [2021-10-13 08:13:01,400 WARN L207 SmtUtils]: Spent 55.80 s on a formula simplification. DAG size of input: 218 DAG size of output: 152 [2021-10-13 08:13:01,436 INFO L860 garLoopResultBuilder]: At program point L638(lines 620 639) the Hoare annotation is: true [2021-10-13 08:13:01,436 INFO L860 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2021-10-13 08:13:01,436 INFO L860 garLoopResultBuilder]: At program point L572-1(line 572) the Hoare annotation is: true [2021-10-13 08:13:01,437 INFO L853 garLoopResultBuilder]: At program point L581(lines 574 582) the Hoare annotation is: (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base)))) (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32)) (= ULTIMATE.start_main_~len~0 ULTIMATE.start_sll_circular_create_~len) (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset) (= (_ bv2 32) ULTIMATE.start_sll_circular_create_~len)) [2021-10-13 08:13:01,437 INFO L853 garLoopResultBuilder]: At program point L581-1(lines 574 582) the Hoare annotation is: (and (= ULTIMATE.start_sll_circular_create_~head~0.base ULTIMATE.start_sll_circular_create_~last~0.base) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1))) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base)))) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)) (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32)) (= ULTIMATE.start_main_~len~0 ULTIMATE.start_sll_circular_create_~len) (= ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))) (_ bv1 1))) (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset) (= (_ bv2 32) ULTIMATE.start_sll_circular_create_~len)) [2021-10-13 08:13:01,437 INFO L853 garLoopResultBuilder]: At program point L614-2(lines 614 617) the Hoare annotation is: (let ((.cse20 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32))) (.cse21 (bvadd ULTIMATE.start_sll_circular_update_at_~index (_ bv1 32)))) (let ((.cse6 (bvslt .cse21 (_ bv2 32))) (.cse8 (bvsgt .cse21 (_ bv0 32))) (.cse0 (or (not (= .cse20 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)))) (.cse14 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_circular_update_at_~head.offset)) (.cse1 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))))) (.cse2 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse3 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse4 (bvsgt ULTIMATE.start_main_~i~0 (_ bv0 32))) (.cse5 (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0)) (.cse7 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse9 (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))) (.cse10 (= ULTIMATE.start_sll_circular_update_at_~data (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32)))) (.cse11 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse12 (or (not (= .cse20 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)))) (.cse18 (= ULTIMATE.start_sll_circular_update_at_~head.base ULTIMATE.start_main_~s~0.base)) (.cse13 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and (forall ((v_DerPreprocessor_5 (_ BitVec 32))) (= (select (select (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_5)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_sll_circular_update_at_~head.offset)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= ULTIMATE.start_sll_circular_update_at_~head.base (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_4)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) .cse9 .cse10 .cse11 (forall ((ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32)) (ULTIMATE.start_sll_circular_update_at_~head.offset (_ BitVec 32))) (= ULTIMATE.start_main_~len~0 (select (select (store |#memory_int| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_int| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) ULTIMATE.start_sll_circular_update_at_~data)) ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset)))) (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~s~0.base)) .cse12 .cse13) (and .cse0 .cse14 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~i~0 (_ bv0 32)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_create_#res.base|) |ULTIMATE.start_sll_circular_create_#res.offset|) |ULTIMATE.start_sll_circular_create_#res.base|)) (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (not (= (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_1)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~s~0.base))) (= ULTIMATE.start_sll_circular_update_at_~data ULTIMATE.start_main_~len~0) .cse6 .cse7 .cse8 .cse9 .cse11 .cse12 (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (let ((.cse15 (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.offset)))) (let ((.cse17 (select (select .cse15 ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (= (select (select (let ((.cse16 (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.base)) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (store .cse15 .cse16 (store (select .cse15 .cse16) (bvadd (_ bv4 32) .cse17) v_DerPreprocessor_5))) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset) .cse17)))) .cse18 .cse13) (and .cse0 .cse14 .cse1 .cse2 .cse3 .cse4 .cse5 (forall ((v_ULTIMATE.start_sll_circular_update_at_~head.offset_14 (_ BitVec 32)) (ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32))) (= ULTIMATE.start_main_~len~0 (select (select (let ((.cse19 (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) ULTIMATE.start_sll_circular_update_at_~head.offset))) (store |#memory_int| .cse19 (store (select |#memory_int| .cse19) (bvadd (_ bv4 32) v_ULTIMATE.start_sll_circular_update_at_~head.offset_14) ULTIMATE.start_sll_circular_update_at_~data))) ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset)))) .cse7 .cse9 .cse10 .cse11 .cse12 (bvslt ULTIMATE.start_sll_circular_update_at_~index (_ bv2 32)) (not (= ULTIMATE.start_main_~s~0.base (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) ULTIMATE.start_sll_circular_update_at_~head.offset))) .cse18 .cse13 (bvsgt ULTIMATE.start_sll_circular_update_at_~index (_ bv0 32)))))) [2021-10-13 08:13:01,437 INFO L857 garLoopResultBuilder]: For program point L614-3(lines 614 617) no Hoare annotation was computed. [2021-10-13 08:13:01,437 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:13:01,437 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 08:13:01,437 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 633) no Hoare annotation was computed. [2021-10-13 08:13:01,437 INFO L860 garLoopResultBuilder]: At program point L598-2(lines 598 602) the Hoare annotation is: true [2021-10-13 08:13:01,438 INFO L857 garLoopResultBuilder]: For program point L598-3(lines 598 602) no Hoare annotation was computed. [2021-10-13 08:13:01,438 INFO L853 garLoopResultBuilder]: At program point L607-2(lines 607 610) the Hoare annotation is: (let ((.cse21 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32))) (.cse19 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)) (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))) (.cse3 (= ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse17 (= ULTIMATE.start_main_~i~0 (_ bv0 32))) (.cse20 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32))) (.cse18 (bvadd ULTIMATE.start_sll_circular_update_at_~index (_ bv1 32)))) (let ((.cse6 (= ULTIMATE.start_sll_circular_get_data_at_~index (_ bv0 32))) (.cse9 (bvsgt .cse18 (_ bv0 32))) (.cse15 (= (select (select |#memory_int| ULTIMATE.start_sll_circular_get_data_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_get_data_at_~head.offset)) ULTIMATE.start_main_~expected~0)) (.cse0 (forall ((v_DerPreprocessor_5 (_ BitVec 32))) (= (select (select (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_5)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_sll_circular_update_at_~head.offset))) (.cse1 (or (not (= .cse20 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)))) (.cse2 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))))) (.cse4 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse5 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse7 (let ((.cse22 (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0)) (.cse23 (= ULTIMATE.start_main_~len~0 (_ bv2 32)))) (or (and .cse3 .cse22 .cse23) (and .cse17 .cse22 .cse23)))) (.cse8 (= .cse21 .cse19)) (.cse10 (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= ULTIMATE.start_sll_circular_update_at_~head.base (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_4)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))) (.cse11 (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))) (.cse12 (= ULTIMATE.start_sll_circular_update_at_~data .cse21)) (.cse13 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse14 (or (not (= .cse20 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)))) (.cse16 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not (bvsgt ULTIMATE.start_sll_circular_update_at_~index (_ bv0 32))) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and .cse0 .cse1 .cse2 .cse4 .cse5 .cse17 .cse6 .cse7 (bvslt .cse18 (_ bv2 32)) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (= ULTIMATE.start_main_~len~0 (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (= (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse19) .cse16) (and .cse0 .cse1 (= ULTIMATE.start_sll_circular_update_at_~index (_ bv0 32)) .cse2 .cse3 .cse4 .cse5 (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_get_data_at_~head.base) ULTIMATE.start_sll_circular_get_data_at_~head.offset)) (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_get_data_at_~head.base) ULTIMATE.start_sll_circular_get_data_at_~head.offset))) ULTIMATE.start_main_~expected~0) .cse7 .cse8 .cse10 .cse11 .cse12 .cse13 .cse14 (= ULTIMATE.start_sll_circular_get_data_at_~index (_ bv1 32)) .cse16)))) [2021-10-13 08:13:01,438 INFO L857 garLoopResultBuilder]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2021-10-13 08:13:01,438 INFO L853 garLoopResultBuilder]: At program point L632(lines 620 639) the Hoare annotation is: false [2021-10-13 08:13:01,438 INFO L853 garLoopResultBuilder]: At program point L625-2(lines 625 628) the Hoare annotation is: (let ((.cse16 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32))) (.cse17 (bvadd ULTIMATE.start_sll_circular_update_at_~index (_ bv1 32)))) (let ((.cse4 (bvslt .cse17 (_ bv2 32))) (.cse6 (bvsgt .cse17 (_ bv0 32))) (.cse0 (or (not (= .cse16 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)))) (.cse1 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))))) (.cse2 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse3 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse5 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse7 (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))) (.cse8 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse10 (or (not (= .cse16 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)))) (.cse11 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_circular_update_at_~head.offset) .cse1 (= ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse2 .cse3 (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (not (= (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_1)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~s~0.base))) (= ULTIMATE.start_sll_circular_update_at_~data ULTIMATE.start_main_~len~0) .cse4 .cse5 .cse6 .cse7 .cse8 (forall ((v_ULTIMATE.start_sll_circular_update_at_~head.offset_14 (_ BitVec 32)) (ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32))) (= (select (select (let ((.cse9 (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) (store |#memory_int| .cse9 (store (select |#memory_int| .cse9) (bvadd (_ bv4 32) v_ULTIMATE.start_sll_circular_update_at_~head.offset_14) ULTIMATE.start_sll_circular_update_at_~data))) ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset)) ULTIMATE.start_main_~len~0)) .cse10 (= ULTIMATE.start_sll_circular_update_at_~head.base ULTIMATE.start_main_~s~0.base) .cse11) (let ((.cse12 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32)))) (and (forall ((v_DerPreprocessor_5 (_ BitVec 32))) (= (select (select (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_5)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_sll_circular_update_at_~head.offset)) .cse0 (= (_ bv2 32) ULTIMATE.start_main_~i~0) .cse1 .cse2 .cse3 .cse4 (= .cse12 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)) (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))) .cse5 .cse6 (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= ULTIMATE.start_sll_circular_update_at_~head.base (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_4)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) .cse7 (= ULTIMATE.start_sll_circular_update_at_~data .cse12) .cse8 .cse10 (= ULTIMATE.start_main_~len~0 (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) .cse11)) (and .cse0 .cse1 .cse2 .cse3 (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (not (= (select (store (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset) v_DerPreprocessor_1) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~s~0.base))) (= ULTIMATE.start_main_~i~0 (_ bv0 32)) .cse5 (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (not (= (select (store (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_create_#res.base|) (bvadd (_ bv4 32) |ULTIMATE.start_sll_circular_create_#res.offset|) v_DerPreprocessor_1) |ULTIMATE.start_sll_circular_create_#res.offset|) |ULTIMATE.start_sll_circular_create_#res.base|))) .cse7 .cse8 .cse10 (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (let ((.cse13 (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.offset)))) (let ((.cse15 (select (select .cse13 ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (= (select (select (let ((.cse14 (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.base)) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (store .cse13 .cse14 (store (select .cse13 .cse14) (bvadd (_ bv4 32) .cse15) v_DerPreprocessor_5))) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset) .cse15)))) .cse11)))) [2021-10-13 08:13:01,438 INFO L857 garLoopResultBuilder]: For program point L625-3(lines 625 628) no Hoare annotation was computed. [2021-10-13 08:13:01,438 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 578) no Hoare annotation was computed. [2021-10-13 08:13:01,441 INFO L857 garLoopResultBuilder]: For program point L576-1(lines 576 578) no Hoare annotation was computed. [2021-10-13 08:13:01,441 INFO L857 garLoopResultBuilder]: For program point L576-2(lines 576 578) no Hoare annotation was computed. [2021-10-13 08:13:01,441 INFO L857 garLoopResultBuilder]: For program point L576-3(lines 576 578) no Hoare annotation was computed. [2021-10-13 08:13:01,442 INFO L853 garLoopResultBuilder]: At program point L593(lines 583 594) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)))) (and (or (not (= .cse0 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base)))) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_create_#res.base|) |ULTIMATE.start_sll_circular_create_#res.offset|) |ULTIMATE.start_sll_circular_create_#res.base|)) (= ULTIMATE.start_main_~len~0 (_ bv2 32)) (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base))) (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32)) (or (not (= .cse0 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base))) (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (let ((.cse1 (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.offset)))) (let ((.cse3 (select (select .cse1 ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (= (select (select (let ((.cse2 (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.base)) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (store .cse1 .cse2 (store (select .cse1 .cse2) (bvadd (_ bv4 32) .cse3) v_DerPreprocessor_5))) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset) .cse3)))) (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) [2021-10-13 08:13:01,442 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 08:13:01,442 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 637) no Hoare annotation was computed. [2021-10-13 08:13:01,443 INFO L853 garLoopResultBuilder]: At program point L586-2(lines 586 591) the Hoare annotation is: (let ((.cse4 (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))) (.cse0 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse1 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse2 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse3 (= ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv0 32))) (.cse5 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and (= ULTIMATE.start_sll_circular_create_~head~0.base ULTIMATE.start_sll_circular_create_~last~0.base) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~len~0 ULTIMATE.start_sll_circular_create_~len) .cse3 (= (_ bv0 1) (bvadd (bvneg .cse4) (_ bv1 1))) .cse5 (= (_ bv2 32) ULTIMATE.start_sll_circular_create_~len)) (and (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset) (_ bv0 32)) (not (= (_ bv0 1) .cse4)) .cse0 .cse1 (= ULTIMATE.start_main_~len~0 (_ bv2 32)) .cse2 (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (not (= (select (store (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.base)) ULTIMATE.start_sll_circular_create_~head~0.base) (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)) v_DerPreprocessor_1) ULTIMATE.start_sll_circular_create_~head~0.offset) ULTIMATE.start_sll_circular_create_~head~0.base))) (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset) ULTIMATE.start_sll_circular_create_~last~0.base) (= ULTIMATE.start_sll_circular_create_~len (_ bv1 32)) .cse3 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))))) .cse5))) [2021-10-13 08:13:01,443 INFO L857 garLoopResultBuilder]: For program point L586-3(lines 586 591) no Hoare annotation was computed. [2021-10-13 08:13:01,443 INFO L853 garLoopResultBuilder]: At program point L611(lines 606 612) the Hoare annotation is: (let ((.cse19 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32))) (.cse21 (bvadd ULTIMATE.start_sll_circular_update_at_~index (_ bv1 32))) (.cse18 (= ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse20 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)))) (let ((.cse0 (forall ((v_DerPreprocessor_5 (_ BitVec 32))) (= (select (select (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_5)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_sll_circular_update_at_~head.offset))) (.cse1 (or (not (= .cse20 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)))) (.cse2 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))))) (.cse3 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse4 (= ULTIMATE.start_main_~expected~0 |ULTIMATE.start_sll_circular_get_data_at_#res|)) (.cse5 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse7 (let ((.cse22 (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0)) (.cse23 (= ULTIMATE.start_main_~len~0 (_ bv2 32)))) (or (and .cse18 .cse22 .cse23) (and (= ULTIMATE.start_main_~i~0 (_ bv0 32)) .cse22 .cse23)))) (.cse8 (bvslt .cse21 (_ bv2 32))) (.cse16 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)) (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))) (.cse9 (bvsgt .cse21 (_ bv0 32))) (.cse10 (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= ULTIMATE.start_sll_circular_update_at_~head.base (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_4)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))) (.cse11 (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))) (.cse12 (= ULTIMATE.start_sll_circular_update_at_~data .cse19)) (.cse13 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse14 (or (not (= .cse20 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)))) (.cse15 (= (select (select |#memory_int| ULTIMATE.start_sll_circular_get_data_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_get_data_at_~head.offset)) ULTIMATE.start_main_~expected~0)) (.cse17 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (let ((.cse6 (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_sll_circular_get_data_at_~index (_ bv0 32)) (= .cse6 (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0)) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (= ULTIMATE.start_main_~len~0 .cse6) (= (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse16) .cse17)) (and .cse0 .cse1 .cse2 .cse18 .cse3 .cse4 .cse5 .cse7 .cse8 (= .cse19 .cse16) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse17 (not (bvsgt ULTIMATE.start_sll_circular_get_data_at_~index (_ bv0 32))))))) [2021-10-13 08:13:01,443 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:13:01,443 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 605) no Hoare annotation was computed. [2021-10-13 08:13:01,443 INFO L857 garLoopResultBuilder]: For program point L596(lines 596 604) no Hoare annotation was computed. [2021-10-13 08:13:01,443 INFO L857 garLoopResultBuilder]: For program point L629-2(lines 629 634) no Hoare annotation was computed. [2021-10-13 08:13:01,443 INFO L853 garLoopResultBuilder]: At program point L629-3(lines 629 634) the Hoare annotation is: (let ((.cse5 (= ULTIMATE.start_main_~i~0 (_ bv0 32))) (.cse17 (bvsgt ULTIMATE.start_main_~i~0 (_ bv0 32))) (.cse6 (bvadd ULTIMATE.start_sll_circular_update_at_~index (_ bv1 32))) (.cse18 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32))) (.cse21 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)))) (let ((.cse0 (forall ((v_DerPreprocessor_5 (_ BitVec 32))) (= (select (select (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_5)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_sll_circular_update_at_~head.offset))) (.cse1 (or (not (= .cse21 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)))) (.cse2 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))))) (.cse3 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse4 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse14 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)) (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))) (.cse8 (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= ULTIMATE.start_sll_circular_update_at_~head.base (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_4)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))) (.cse9 (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))) (.cse10 (= ULTIMATE.start_sll_circular_update_at_~data .cse18)) (.cse11 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse12 (or (not (= .cse21 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)))) (.cse15 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset)) (.cse16 (not (bvsgt ULTIMATE.start_sll_circular_update_at_~index (_ bv0 32)))) (.cse7 (bvsgt .cse6 (_ bv0 32))) (.cse13 (let ((.cse20 (= ULTIMATE.start_main_~len~0 (_ bv2 32)))) (or (and .cse5 .cse20) (and .cse17 .cse20)))) (.cse19 (not (bvsgt ULTIMATE.start_sll_circular_get_data_at_~index (_ bv0 32))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (bvslt .cse6 (_ bv2 32)) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (= ULTIMATE.start_main_~len~0 (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (= (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse14) .cse15) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse3 .cse4 .cse16 .cse17 (= ULTIMATE.start_sll_circular_get_data_at_~index (_ bv0 32)) (= .cse18 .cse14) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse15 .cse19) (and (= (_ bv2 32) ULTIMATE.start_main_~i~0) .cse16 .cse17 .cse7 .cse13 .cse19)))) [2021-10-13 08:13:01,444 INFO L857 garLoopResultBuilder]: For program point L629-4(lines 629 634) no Hoare annotation was computed. [2021-10-13 08:13:01,444 INFO L857 garLoopResultBuilder]: For program point L613(lines 1 639) no Hoare annotation was computed. [2021-10-13 08:13:01,449 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:13:01,456 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:13:01,461 INFO L168 Benchmark]: Toolchain (without parser) took 502721.19 ms. Allocated memory was 52.4 MB in the beginning and 104.9 MB in the end (delta: 52.4 MB). Free memory was 28.2 MB in the beginning and 48.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:01,461 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:13:01,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.48 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.0 MB in the beginning and 52.5 MB in the end (delta: -24.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:01,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.80 ms. Allocated memory is still 71.3 MB. Free memory was 52.5 MB in the beginning and 50.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:01,462 INFO L168 Benchmark]: Boogie Preprocessor took 84.02 ms. Allocated memory is still 71.3 MB. Free memory was 50.3 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:01,462 INFO L168 Benchmark]: RCFGBuilder took 689.96 ms. Allocated memory is still 71.3 MB. Free memory was 48.2 MB in the beginning and 50.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:01,463 INFO L168 Benchmark]: TraceAbstraction took 501260.83 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 49.7 MB in the beginning and 48.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:01,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 606.48 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.0 MB in the beginning and 52.5 MB in the end (delta: -24.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.80 ms. Allocated memory is still 71.3 MB. Free memory was 52.5 MB in the beginning and 50.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.02 ms. Allocated memory is still 71.3 MB. Free memory was 50.3 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 689.96 ms. Allocated memory is still 71.3 MB. Free memory was 48.2 MB in the beginning and 50.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 501260.83 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 49.7 MB in the beginning and 48.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 637]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 501174.8ms, OverallIterations: 12, TraceHistogramMax: 4, EmptinessCheckTime: 25.7ms, AutomataDifference: 212533.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 165032.9ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 293 SDtfs, 1769 SDslu, 1448 SDs, 0 SdLazy, 2237 SolverSat, 656 SolverUnsat, 23 SolverUnknown, 0 SolverNotchecked, 50960.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1755 GetRequests, 1422 SyntacticMatches, 15 SemanticMatches, 318 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 7700 ImplicationChecksByTransitivity, 249640.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=8, InterpolantAutomatonStates: 163, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 187.3ms AutomataMinimizationTime, 12 MinimizatonAttempts, 288 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 35 NumberOfFragments, 2529 HoareAnnotationTreeSize, 14 FomulaSimplifications, 152414 FormulaSimplificationTreeSizeReduction, 716.5ms HoareSimplificationTime, 14 FomulaSimplificationsInter, 149819 FormulaSimplificationTreeSizeReductionInter, 164305.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 415.6ms SsaConstructionTime, 2764.4ms SatisfiabilityAnalysisTime, 93559.8ms InterpolantComputationTime, 824 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1596 ConstructedInterpolants, 109 QuantifiedInterpolants, 8961 SizeOfPredicates, 275 NumberOfNonLiveVariables, 3494 ConjunctsInSsa, 356 ConjunctsInUnsatCore, 52 InterpolantComputations, 8 PerfectInterpolantSequences, 543/780 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 620]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 572]: Loop Invariant Derived loop invariant: 1 - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:13:01,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dc5964-78d0-4967-ada9-36bc8871ba82/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...