./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_append_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_append_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6d236a55b5c67d19e4c45c0ae95f681ece2bebf ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_append_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6d236a55b5c67d19e4c45c0ae95f681ece2bebf .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:14:30,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:14:30,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:14:30,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:14:30,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:14:30,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:14:30,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:14:30,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:14:30,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:14:30,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:14:30,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:14:30,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:14:30,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:14:30,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:14:30,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:14:30,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:14:30,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:14:30,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:14:30,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:14:30,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:14:30,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:14:30,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:14:30,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:14:30,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:14:30,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:14:30,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:14:30,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:14:30,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:14:30,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:14:30,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:14:30,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:14:30,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:14:30,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:14:30,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:14:30,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:14:30,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:14:30,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:14:30,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:14:30,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:14:30,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:14:30,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:14:30,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 03:14:30,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:14:30,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:14:30,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:14:30,810 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:14:30,810 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:14:30,811 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:14:30,811 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:14:30,811 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:14:30,812 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:14:30,812 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:14:30,813 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:14:30,814 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:14:30,814 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:14:30,815 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:14:30,815 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:14:30,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 03:14:30,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 03:14:30,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:14:30,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:14:30,817 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 03:14:30,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:14:30,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:14:30,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:14:30,818 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 03:14:30,819 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 03:14:30,819 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 03:14:30,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:14:30,821 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:14:30,822 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:14:30,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:14:30,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:14:30,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:14:30,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:14:30,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:14:30,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:14:30,824 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:14:30,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:14:30,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:14:30,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:14:30,825 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_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6d236a55b5c67d19e4c45c0ae95f681ece2bebf [2021-10-16 03:14:31,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:14:31,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:14:31,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:14:31,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:14:31,160 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:14:31,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/sll2n_append_equal.i [2021-10-16 03:14:31,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/data/ed00cbb19/8d5bf77985c14c1d96cc9625a3c0afed/FLAG52662343b [2021-10-16 03:14:31,931 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:14:31,932 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/sv-benchmarks/c/list-simple/sll2n_append_equal.i [2021-10-16 03:14:31,950 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/data/ed00cbb19/8d5bf77985c14c1d96cc9625a3c0afed/FLAG52662343b [2021-10-16 03:14:32,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/data/ed00cbb19/8d5bf77985c14c1d96cc9625a3c0afed [2021-10-16 03:14:32,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:14:32,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:14:32,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:14:32,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:14:32,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:14:32,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:32,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd57f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32, skipping insertion in model container [2021-10-16 03:14:32,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:32,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:14:32,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:14:32,791 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_dd1320d6-9612-4c65-969b-444043cf41e0/sv-benchmarks/c/list-simple/sll2n_append_equal.i[24197,24210] [2021-10-16 03:14:32,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:14:32,815 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:14:32,903 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_dd1320d6-9612-4c65-969b-444043cf41e0/sv-benchmarks/c/list-simple/sll2n_append_equal.i[24197,24210] [2021-10-16 03:14:32,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:14:32,953 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:14:32,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32 WrapperNode [2021-10-16 03:14:32,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:14:32,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:14:32,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:14:32,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:14:32,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:33,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:33,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:14:33,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:14:33,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:14:33,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:14:33,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:33,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:33,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:33,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:33,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:33,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:33,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:33,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:14:33,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:14:33,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:14:33,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:14:33,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (1/1) ... [2021-10-16 03:14:33,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:14:33,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:14:33,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:14:33,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:14:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:14:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:14:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:14:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:14:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:14:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:14:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:14:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-16 03:14:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:14:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:14:33,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:14:34,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:14:34,081 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-16 03:14:34,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:34 BoogieIcfgContainer [2021-10-16 03:14:34,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:14:34,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:14:34,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:14:34,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:14:34,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:14:32" (1/3) ... [2021-10-16 03:14:34,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0338e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:14:34, skipping insertion in model container [2021-10-16 03:14:34,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:32" (2/3) ... [2021-10-16 03:14:34,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0338e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:14:34, skipping insertion in model container [2021-10-16 03:14:34,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:34" (3/3) ... [2021-10-16 03:14:34,105 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2021-10-16 03:14:34,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:14:34,119 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-10-16 03:14:34,176 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:14:34,184 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:14:34,184 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-10-16 03:14:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 70 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 03:14:34,219 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:34,220 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 03:14:34,220 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:34,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:34,226 INFO L82 PathProgramCache]: Analyzing trace with hash 6073010, now seen corresponding path program 1 times [2021-10-16 03:14:34,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:14:34,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706101378] [2021-10-16 03:14:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:34,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:14:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:34,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:14:34,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706101378] [2021-10-16 03:14:34,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706101378] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:34,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:34,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:14:34,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351715999] [2021-10-16 03:14:34,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:14:34,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:14:34,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:14:34,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:14:34,500 INFO L87 Difference]: Start difference. First operand has 71 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 70 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:34,593 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-10-16 03:14:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:14:34,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-10-16 03:14:34,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:34,608 INFO L225 Difference]: With dead ends: 83 [2021-10-16 03:14:34,609 INFO L226 Difference]: Without dead ends: 79 [2021-10-16 03:14:34,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:14:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-16 03:14:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2021-10-16 03:14:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 32 states have (on average 2.3125) internal successors, (74), 68 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) [2021-10-16 03:14:34,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2021-10-16 03:14:34,684 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 4 [2021-10-16 03:14:34,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:34,684 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2021-10-16 03:14:34,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2021-10-16 03:14:34,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 03:14:34,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:34,686 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 03:14:34,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:14:34,686 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:34,693 INFO L82 PathProgramCache]: Analyzing trace with hash 5908743, now seen corresponding path program 1 times [2021-10-16 03:14:34,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:14:34,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544882245] [2021-10-16 03:14:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:34,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:14:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:34,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:14:34,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544882245] [2021-10-16 03:14:34,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544882245] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:34,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:34,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:14:34,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514710021] [2021-10-16 03:14:34,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:14:34,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:14:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:14:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:14:34,812 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:34,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:34,966 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2021-10-16 03:14:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:14:34,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-16 03:14:34,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:34,974 INFO L225 Difference]: With dead ends: 75 [2021-10-16 03:14:34,974 INFO L226 Difference]: Without dead ends: 75 [2021-10-16 03:14:34,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:14:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-16 03:14:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2021-10-16 03:14:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 32 states have (on average 2.1875) internal successors, (70), 64 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2021-10-16 03:14:35,003 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 4 [2021-10-16 03:14:35,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:35,004 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2021-10-16 03:14:35,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2021-10-16 03:14:35,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 03:14:35,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:35,010 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 03:14:35,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:14:35,011 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:35,012 INFO L82 PathProgramCache]: Analyzing trace with hash 5908744, now seen corresponding path program 1 times [2021-10-16 03:14:35,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:14:35,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547248789] [2021-10-16 03:14:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:35,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:14:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:35,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:14:35,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547248789] [2021-10-16 03:14:35,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547248789] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:35,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:35,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:14:35,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149170948] [2021-10-16 03:14:35,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:14:35,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:14:35,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:14:35,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:14:35,144 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:35,242 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2021-10-16 03:14:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:14:35,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-16 03:14:35,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:35,247 INFO L225 Difference]: With dead ends: 61 [2021-10-16 03:14:35,247 INFO L226 Difference]: Without dead ends: 61 [2021-10-16 03:14:35,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:14:35,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-16 03:14:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-16 03:14:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 32 states have (on average 2.0625) internal successors, (66), 60 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-10-16 03:14:35,268 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 4 [2021-10-16 03:14:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:35,269 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-10-16 03:14:35,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-10-16 03:14:35,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:14:35,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:35,270 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:14:35,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:14:35,271 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:35,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:35,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1383339157, now seen corresponding path program 1 times [2021-10-16 03:14:35,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:14:35,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273198819] [2021-10-16 03:14:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:35,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:14:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:35,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:14:35,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273198819] [2021-10-16 03:14:35,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273198819] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:35,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:35,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:14:35,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471444829] [2021-10-16 03:14:35,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:14:35,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:14:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:14:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:14:35,386 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:35,496 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2021-10-16 03:14:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:14:35,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 03:14:35,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:35,498 INFO L225 Difference]: With dead ends: 73 [2021-10-16 03:14:35,498 INFO L226 Difference]: Without dead ends: 73 [2021-10-16 03:14:35,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:14:35,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-16 03:14:35,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2021-10-16 03:14:35,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 2.03125) internal successors, (65), 59 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-10-16 03:14:35,505 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 6 [2021-10-16 03:14:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:35,505 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-10-16 03:14:35,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-10-16 03:14:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:14:35,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:35,506 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:14:35,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 03:14:35,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:35,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1383339158, now seen corresponding path program 1 times [2021-10-16 03:14:35,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:14:35,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758923044] [2021-10-16 03:14:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:35,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:14:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:35,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:14:35,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758923044] [2021-10-16 03:14:35,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758923044] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:35,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:35,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:14:35,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127012976] [2021-10-16 03:14:35,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:14:35,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:14:35,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:14:35,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:14:35,593 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:35,689 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2021-10-16 03:14:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:14:35,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 03:14:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:35,691 INFO L225 Difference]: With dead ends: 62 [2021-10-16 03:14:35,691 INFO L226 Difference]: Without dead ends: 62 [2021-10-16 03:14:35,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:14:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-16 03:14:35,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2021-10-16 03:14:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 32 states have (on average 2.0) internal successors, (64), 58 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2021-10-16 03:14:35,697 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 6 [2021-10-16 03:14:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:35,698 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2021-10-16 03:14:35,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2021-10-16 03:14:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:14:35,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:35,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:35,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 03:14:35,700 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:35,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:35,701 INFO L82 PathProgramCache]: Analyzing trace with hash 830992643, now seen corresponding path program 1 times [2021-10-16 03:14:35,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:14:35,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832890061] [2021-10-16 03:14:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:35,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:14:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:35,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:14:35,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832890061] [2021-10-16 03:14:35,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832890061] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:14:35,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252266052] [2021-10-16 03:14:35,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:35,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:14:35,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:14:35,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:14:35,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:14:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:35,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:14:35,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:35,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:36,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252266052] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:14:36,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [257163690] [2021-10-16 03:14:36,060 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-16 03:14:36,061 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:14:36,066 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:14:36,088 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:14:36,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:14:36,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:14:36,237 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:14:36,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:14:36,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 03:14:36,244 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:14:36,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:14:36,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 03:14:36,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-10-16 03:14:36,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:14:36,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:14:36,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:14:36,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 03:14:36,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:14:36,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:14:36,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:14:36,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:14:36,347 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:14:36,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:14:36,396 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:14:36,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:14:36,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-10-16 03:14:36,408 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:14:36,412 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:134, output treesize:137 [2021-10-16 03:14:36,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:36,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-16 03:14:36,637 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_96| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:14:36,642 INFO L168 Benchmark]: Toolchain (without parser) took 4444.72 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 69.7 MB in the beginning and 87.2 MB in the end (delta: -17.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:36,642 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 59.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:36,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.38 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 69.4 MB in the beginning and 92.2 MB in the end (delta: -22.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:36,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.35 ms. Allocated memory is still 125.8 MB. Free memory was 92.2 MB in the beginning and 90.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:36,645 INFO L168 Benchmark]: Boogie Preprocessor took 80.75 ms. Allocated memory is still 125.8 MB. Free memory was 90.1 MB in the beginning and 88.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:36,645 INFO L168 Benchmark]: RCFGBuilder took 939.23 ms. Allocated memory is still 125.8 MB. Free memory was 88.0 MB in the beginning and 64.4 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:36,646 INFO L168 Benchmark]: TraceAbstraction took 2553.79 ms. Allocated memory is still 125.8 MB. Free memory was 63.7 MB in the beginning and 87.2 MB in the end (delta: -23.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:36,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 59.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 752.38 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 69.4 MB in the beginning and 92.2 MB in the end (delta: -22.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 107.35 ms. Allocated memory is still 125.8 MB. Free memory was 92.2 MB in the beginning and 90.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.75 ms. Allocated memory is still 125.8 MB. Free memory was 90.1 MB in the beginning and 88.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 939.23 ms. Allocated memory is still 125.8 MB. Free memory was 88.0 MB in the beginning and 64.4 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2553.79 ms. Allocated memory is still 125.8 MB. Free memory was 63.7 MB in the beginning and 87.2 MB in the end (delta: -23.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_96| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_96|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:14:36,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 03:14:39,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:14:39,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:14:39,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:14:39,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:14:39,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:14:39,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:14:39,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:14:39,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:14:39,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:14:39,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:14:39,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:14:39,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:14:39,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:14:39,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:14:39,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:14:39,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:14:39,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:14:39,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:14:39,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:14:39,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:14:39,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:14:39,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:14:39,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:14:39,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:14:39,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:14:39,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:14:39,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:14:39,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:14:39,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:14:39,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:14:39,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:14:39,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:14:39,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:14:39,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:14:39,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:14:39,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:14:39,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:14:39,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:14:39,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:14:39,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:14:39,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-16 03:14:39,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:14:39,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:14:39,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:14:39,804 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:14:39,804 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:14:39,805 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:14:39,805 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:14:39,805 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:14:39,805 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:14:39,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 03:14:39,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 03:14:39,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:14:39,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:14:39,809 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 03:14:39,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:14:39,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:14:39,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:14:39,810 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 03:14:39,810 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 03:14:39,811 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 03:14:39,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:14:39,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:14:39,811 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:14:39,812 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:14:39,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:14:39,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:14:39,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:14:39,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:14:39,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:14:39,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:14:39,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:14:39,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:14:39,815 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:14:39,815 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:14:39,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:14:39,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:14:39,815 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_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6d236a55b5c67d19e4c45c0ae95f681ece2bebf [2021-10-16 03:14:40,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:14:40,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:14:40,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:14:40,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:14:40,368 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:14:40,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/sll2n_append_equal.i [2021-10-16 03:14:40,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/data/be93913cb/b7204843096846a0938ab5c7f9f5062c/FLAG2a37bebd1 [2021-10-16 03:14:41,206 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:14:41,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/sv-benchmarks/c/list-simple/sll2n_append_equal.i [2021-10-16 03:14:41,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/data/be93913cb/b7204843096846a0938ab5c7f9f5062c/FLAG2a37bebd1 [2021-10-16 03:14:41,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/data/be93913cb/b7204843096846a0938ab5c7f9f5062c [2021-10-16 03:14:41,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:14:41,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:14:41,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:14:41,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:14:41,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:14:41,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:14:41" (1/1) ... [2021-10-16 03:14:41,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eec087c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:41, skipping insertion in model container [2021-10-16 03:14:41,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:14:41" (1/1) ... [2021-10-16 03:14:41,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:14:41,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:14:42,071 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_dd1320d6-9612-4c65-969b-444043cf41e0/sv-benchmarks/c/list-simple/sll2n_append_equal.i[24197,24210] [2021-10-16 03:14:42,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:14:42,106 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:14:42,186 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_dd1320d6-9612-4c65-969b-444043cf41e0/sv-benchmarks/c/list-simple/sll2n_append_equal.i[24197,24210] [2021-10-16 03:14:42,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:14:42,255 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:14:42,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42 WrapperNode [2021-10-16 03:14:42,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:14:42,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:14:42,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:14:42,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:14:42,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (1/1) ... [2021-10-16 03:14:42,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (1/1) ... [2021-10-16 03:14:42,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:14:42,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:14:42,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:14:42,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:14:42,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (1/1) ... [2021-10-16 03:14:42,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (1/1) ... [2021-10-16 03:14:42,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (1/1) ... [2021-10-16 03:14:42,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (1/1) ... [2021-10-16 03:14:42,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (1/1) ... [2021-10-16 03:14:42,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (1/1) ... [2021-10-16 03:14:42,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (1/1) ... [2021-10-16 03:14:42,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:14:42,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:14:42,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:14:42,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:14:42,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (1/1) ... [2021-10-16 03:14:42,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:14:42,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:14:42,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:14:42,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:14:42,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:14:42,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:14:42,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:14:42,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:14:42,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:14:42,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:14:42,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 03:14:42,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-16 03:14:42,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:14:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:14:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:14:43,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:14:43,426 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-16 03:14:43,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:43 BoogieIcfgContainer [2021-10-16 03:14:43,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:14:43,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:14:43,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:14:43,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:14:43,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:14:41" (1/3) ... [2021-10-16 03:14:43,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ed484c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:14:43, skipping insertion in model container [2021-10-16 03:14:43,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:42" (2/3) ... [2021-10-16 03:14:43,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ed484c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:14:43, skipping insertion in model container [2021-10-16 03:14:43,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:43" (3/3) ... [2021-10-16 03:14:43,441 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2021-10-16 03:14:43,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:14:43,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-10-16 03:14:43,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:14:43,521 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:14:43,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-10-16 03:14:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 50 states have (on average 2.0) internal successors, (100), 87 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 03:14:43,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:43,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 03:14:43,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:43,555 INFO L82 PathProgramCache]: Analyzing trace with hash 28698858, now seen corresponding path program 1 times [2021-10-16 03:14:43,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:43,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723888915] [2021-10-16 03:14:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:43,572 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:43,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:43,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:43,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:14:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:43,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:14:43,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:43,808 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 [2021-10-16 03:14:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:43,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:43,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:43,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723888915] [2021-10-16 03:14:43,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723888915] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:43,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:43,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:14:43,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433215959] [2021-10-16 03:14:43,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:14:43,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:14:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:14:43,914 INFO L87 Difference]: Start difference. First operand has 88 states, 50 states have (on average 2.0) internal successors, (100), 87 states have internal predecessors, (100), 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, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:44,211 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2021-10-16 03:14:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:14:44,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 03:14:44,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:44,224 INFO L225 Difference]: With dead ends: 99 [2021-10-16 03:14:44,224 INFO L226 Difference]: Without dead ends: 95 [2021-10-16 03:14:44,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:14:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-16 03:14:44,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 80. [2021-10-16 03:14:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 47 states have (on average 1.8085106382978724) internal successors, (85), 79 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) [2021-10-16 03:14:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2021-10-16 03:14:44,290 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 5 [2021-10-16 03:14:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:44,290 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2021-10-16 03:14:44,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2021-10-16 03:14:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 03:14:44,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:44,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 03:14:44,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:44,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:44,493 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:44,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:44,494 INFO L82 PathProgramCache]: Analyzing trace with hash 28698859, now seen corresponding path program 1 times [2021-10-16 03:14:44,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:44,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077489090] [2021-10-16 03:14:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:44,496 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:44,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:44,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:44,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:14:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:44,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:14:44,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:44,642 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 [2021-10-16 03:14:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:44,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:44,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:44,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077489090] [2021-10-16 03:14:44,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077489090] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:44,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:44,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 03:14:44,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520422385] [2021-10-16 03:14:44,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:14:44,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:44,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:14:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:14:44,853 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:45,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:45,101 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2021-10-16 03:14:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:14:45,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 03:14:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:45,104 INFO L225 Difference]: With dead ends: 79 [2021-10-16 03:14:45,104 INFO L226 Difference]: Without dead ends: 79 [2021-10-16 03:14:45,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:14:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-16 03:14:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2021-10-16 03:14:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2021-10-16 03:14:45,115 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 5 [2021-10-16 03:14:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:45,115 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2021-10-16 03:14:45,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2021-10-16 03:14:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:14:45,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:45,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:45,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:45,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:45,329 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:45,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:45,330 INFO L82 PathProgramCache]: Analyzing trace with hash -245418610, now seen corresponding path program 1 times [2021-10-16 03:14:45,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:45,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622156819] [2021-10-16 03:14:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:45,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:45,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:45,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:45,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:14:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:45,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:14:45,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:45,472 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 [2021-10-16 03:14:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:45,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:45,617 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:45,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622156819] [2021-10-16 03:14:45,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622156819] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:45,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:45,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 03:14:45,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536032042] [2021-10-16 03:14:45,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:14:45,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:45,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:14:45,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:14:45,620 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:46,204 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2021-10-16 03:14:46,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:14:46,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 03:14:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:46,208 INFO L225 Difference]: With dead ends: 154 [2021-10-16 03:14:46,208 INFO L226 Difference]: Without dead ends: 154 [2021-10-16 03:14:46,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 73.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:14:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-16 03:14:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 75. [2021-10-16 03:14:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 47 states have (on average 1.702127659574468) internal successors, (80), 74 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-10-16 03:14:46,220 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 9 [2021-10-16 03:14:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:46,221 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-10-16 03:14:46,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-10-16 03:14:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:14:46,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:46,222 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:46,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:46,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:46,423 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:46,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:46,424 INFO L82 PathProgramCache]: Analyzing trace with hash -245418609, now seen corresponding path program 1 times [2021-10-16 03:14:46,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:46,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037267404] [2021-10-16 03:14:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:46,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:46,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:46,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:46,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:14:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:46,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:14:46,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:46,554 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 [2021-10-16 03:14:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:46,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:47,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:47,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037267404] [2021-10-16 03:14:47,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037267404] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:47,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:47,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 03:14:47,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409351937] [2021-10-16 03:14:47,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:14:47,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:47,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:14:47,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:14:47,012 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:47,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:47,743 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2021-10-16 03:14:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:14:47,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 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 9 [2021-10-16 03:14:47,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:47,747 INFO L225 Difference]: With dead ends: 143 [2021-10-16 03:14:47,747 INFO L226 Difference]: Without dead ends: 143 [2021-10-16 03:14:47,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 248.5ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-16 03:14:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-16 03:14:47,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 74. [2021-10-16 03:14:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.6808510638297873) internal successors, (79), 73 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-10-16 03:14:47,766 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 9 [2021-10-16 03:14:47,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:47,767 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-10-16 03:14:47,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-10-16 03:14:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:14:47,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:47,769 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:47,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:47,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:47,982 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:47,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:47,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1442029390, now seen corresponding path program 1 times [2021-10-16 03:14:47,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:47,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902066290] [2021-10-16 03:14:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:47,984 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:47,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:47,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:48,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:14:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:48,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:14:48,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:48,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:48,224 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:48,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902066290] [2021-10-16 03:14:48,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902066290] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:48,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:48,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:14:48,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027635170] [2021-10-16 03:14:48,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:14:48,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:48,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:14:48,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:14:48,228 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:48,246 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2021-10-16 03:14:48,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:14:48,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 03:14:48,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:48,248 INFO L225 Difference]: With dead ends: 84 [2021-10-16 03:14:48,248 INFO L226 Difference]: Without dead ends: 84 [2021-10-16 03:14:48,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:14:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-16 03:14:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-16 03:14:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.5614035087719298) internal successors, (89), 83 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) [2021-10-16 03:14:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2021-10-16 03:14:48,257 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 11 [2021-10-16 03:14:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:48,258 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2021-10-16 03:14:48,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2021-10-16 03:14:48,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 03:14:48,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:48,260 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] [2021-10-16 03:14:48,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:48,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:48,478 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:48,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:48,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1941472818, now seen corresponding path program 1 times [2021-10-16 03:14:48,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:48,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142127134] [2021-10-16 03:14:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:48,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:48,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:48,481 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:48,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:14:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:48,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:14:48,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:48,730 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 [2021-10-16 03:14:48,809 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 03:14:48,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-16 03:14:49,422 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-16 03:14:49,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 56 [2021-10-16 03:14:50,559 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-16 03:14:50,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 58 [2021-10-16 03:14:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:51,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:53,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:53,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142127134] [2021-10-16 03:14:53,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142127134] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:14:53,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:14:53,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-16 03:14:53,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319494190] [2021-10-16 03:14:53,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:14:53,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:53,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:14:53,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=58, Unknown=1, NotChecked=0, Total=90 [2021-10-16 03:14:53,770 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 6 states, 5 states have (on average 5.8) 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) [2021-10-16 03:14:54,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:54,283 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2021-10-16 03:14:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:14:54,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) 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 29 [2021-10-16 03:14:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:54,284 INFO L225 Difference]: With dead ends: 91 [2021-10-16 03:14:54,284 INFO L226 Difference]: Without dead ends: 91 [2021-10-16 03:14:54,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2362.0ms TimeCoverageRelationStatistics Valid=37, Invalid=72, Unknown=1, NotChecked=0, Total=110 [2021-10-16 03:14:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-16 03:14:54,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2021-10-16 03:14:54,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 78 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2021-10-16 03:14:54,291 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 29 [2021-10-16 03:14:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:54,292 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2021-10-16 03:14:54,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) 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) [2021-10-16 03:14:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2021-10-16 03:14:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 03:14:54,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:54,294 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] [2021-10-16 03:14:54,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:54,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:54,495 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:14:54,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:54,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1941472817, now seen corresponding path program 1 times [2021-10-16 03:14:54,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:54,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492212085] [2021-10-16 03:14:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:54,497 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:54,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:54,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:54,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 03:14:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:54,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 03:14:54,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:54,890 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 [2021-10-16 03:14:54,902 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 [2021-10-16 03:14:54,985 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-16 03:14:54,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-10-16 03:14:55,000 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-16 03:14:55,001 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 25 treesize of output 21 [2021-10-16 03:14:55,323 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-16 03:14:55,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-10-16 03:14:56,058 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-16 03:14:56,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 32 [2021-10-16 03:14:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:56,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:15:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:15:00,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:15:00,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492212085] [2021-10-16 03:15:00,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492212085] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:15:00,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:15:00,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-16 03:15:00,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630385287] [2021-10-16 03:15:00,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:15:00,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:15:00,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:15:00,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=59, Unknown=1, NotChecked=0, Total=90 [2021-10-16 03:15:00,205 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 6 states, 5 states have (on average 5.8) 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) [2021-10-16 03:15:01,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:15:01,173 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2021-10-16 03:15:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:15:01,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) 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 29 [2021-10-16 03:15:01,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:15:01,176 INFO L225 Difference]: With dead ends: 74 [2021-10-16 03:15:01,176 INFO L226 Difference]: Without dead ends: 74 [2021-10-16 03:15:01,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2678.7ms TimeCoverageRelationStatistics Valid=36, Invalid=73, Unknown=1, NotChecked=0, Total=110 [2021-10-16 03:15:01,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-16 03:15:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-16 03:15:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 73 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:15:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-10-16 03:15:01,182 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 29 [2021-10-16 03:15:01,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:15:01,183 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-10-16 03:15:01,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) 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) [2021-10-16 03:15:01,183 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-10-16 03:15:01,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 03:15:01,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:15:01,184 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] [2021-10-16 03:15:01,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:15:01,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:15:01,393 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:15:01,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:15:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash -984983596, now seen corresponding path program 1 times [2021-10-16 03:15:01,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:15:01,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697482961] [2021-10-16 03:15:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:15:01,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:15:01,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:15:01,395 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:15:01,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 03:15:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:15:01,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-16 03:15:01,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:15:01,926 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 [2021-10-16 03:15:02,215 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-10-16 03:15:02,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 38 [2021-10-16 03:15:02,398 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-10-16 03:15:02,398 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 41 treesize of output 46 [2021-10-16 03:15:02,680 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-16 03:15:02,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 66 [2021-10-16 03:15:03,497 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 03:15:03,498 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 59 treesize of output 41 [2021-10-16 03:15:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:15:03,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:15:03,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:15:03,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-16 03:15:23,063 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 156 treesize of output 148 [2021-10-16 03:15:25,489 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:15:25,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 111 [2021-10-16 03:15:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:15:25,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:15:25,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697482961] [2021-10-16 03:15:25,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697482961] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:15:25,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:15:25,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 23 [2021-10-16 03:15:25,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932855293] [2021-10-16 03:15:25,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-16 03:15:25,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:15:25,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-16 03:15:25,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=472, Unknown=6, NotChecked=0, Total=552 [2021-10-16 03:15:25,875 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:15:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:15:40,251 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2021-10-16 03:15:40,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 03:15:40,252 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 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 33 [2021-10-16 03:15:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:15:40,253 INFO L225 Difference]: With dead ends: 122 [2021-10-16 03:15:40,253 INFO L226 Difference]: Without dead ends: 122 [2021-10-16 03:15:40,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 25141.0ms TimeCoverageRelationStatistics Valid=282, Invalid=902, Unknown=6, NotChecked=0, Total=1190 [2021-10-16 03:15:40,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-16 03:15:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 78. [2021-10-16 03:15:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:15:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-10-16 03:15:40,262 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 33 [2021-10-16 03:15:40,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:15:40,263 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-10-16 03:15:40,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:15:40,264 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-10-16 03:15:40,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 03:15:40,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:15:40,265 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] [2021-10-16 03:15:40,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:15:40,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:15:40,481 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:15:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:15:40,482 INFO L82 PathProgramCache]: Analyzing trace with hash -984983595, now seen corresponding path program 1 times [2021-10-16 03:15:40,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:15:40,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28886964] [2021-10-16 03:15:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:15:40,483 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:15:40,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:15:40,484 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:15:40,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 03:15:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:15:40,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-16 03:15:40,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:15:41,083 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 [2021-10-16 03:15:41,096 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 [2021-10-16 03:15:41,559 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-16 03:15:41,559 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 20 treesize of output 20 [2021-10-16 03:15:41,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-10-16 03:15:41,789 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-10-16 03:15:41,789 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 31 treesize of output 36 [2021-10-16 03:15:41,867 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-16 03:15:41,867 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 21 treesize of output 20 [2021-10-16 03:15:42,093 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-16 03:15:42,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 84 [2021-10-16 03:15:42,153 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-16 03:15:42,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 69 [2021-10-16 03:15:45,077 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 03:15:45,077 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 68 treesize of output 50 [2021-10-16 03:15:45,090 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 03:15:45,090 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 44 treesize of output 30 [2021-10-16 03:15:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:15:45,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:15:45,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:15:45,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-16 03:15:45,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:15:45,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-16 03:15:55,538 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 241 treesize of output 233 [2021-10-16 03:15:55,547 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 1188 treesize of output 1136 [2021-10-16 03:16:01,887 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 16 treesize of output 14 [2021-10-16 03:16:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:16:02,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:16:02,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28886964] [2021-10-16 03:16:02,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28886964] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:16:02,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:16:02,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 23 [2021-10-16 03:16:02,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554941244] [2021-10-16 03:16:02,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-16 03:16:02,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:16:02,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-16 03:16:02,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=476, Unknown=3, NotChecked=0, Total=552 [2021-10-16 03:16:02,056 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:16:20,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:16:20,590 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2021-10-16 03:16:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-16 03:16:20,591 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 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 33 [2021-10-16 03:16:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:16:20,592 INFO L225 Difference]: With dead ends: 133 [2021-10-16 03:16:20,593 INFO L226 Difference]: Without dead ends: 133 [2021-10-16 03:16:20,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 26582.1ms TimeCoverageRelationStatistics Valid=289, Invalid=968, Unknown=3, NotChecked=0, Total=1260 [2021-10-16 03:16:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-16 03:16:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 78. [2021-10-16 03:16:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 77 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:16:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2021-10-16 03:16:20,601 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 33 [2021-10-16 03:16:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:16:20,601 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2021-10-16 03:16:20,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:16:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2021-10-16 03:16:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 03:16:20,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:16:20,604 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] [2021-10-16 03:16:20,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:16:20,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:16:20,809 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:16:20,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:16:20,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1823455469, now seen corresponding path program 1 times [2021-10-16 03:16:20,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:16:20,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273350731] [2021-10-16 03:16:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:16:20,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:16:20,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:16:20,811 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:16:20,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 03:16:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:16:21,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 03:16:21,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:16:21,424 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 [2021-10-16 03:16:21,583 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 22 treesize of output 18 [2021-10-16 03:16:21,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-10-16 03:16:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:16:21,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:16:21,703 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 44 treesize of output 40 [2021-10-16 03:16:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:16:22,111 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:16:22,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273350731] [2021-10-16 03:16:22,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273350731] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:16:22,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:16:22,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-16 03:16:22,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861565384] [2021-10-16 03:16:22,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 03:16:22,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:16:22,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 03:16:22,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-16 03:16:22,113 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 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) [2021-10-16 03:16:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:16:23,113 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2021-10-16 03:16:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 03:16:23,114 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 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 35 [2021-10-16 03:16:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:16:23,116 INFO L225 Difference]: With dead ends: 138 [2021-10-16 03:16:23,116 INFO L226 Difference]: Without dead ends: 138 [2021-10-16 03:16:23,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 470.4ms TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-10-16 03:16:23,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-16 03:16:23,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 81. [2021-10-16 03:16:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 80 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) [2021-10-16 03:16:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2021-10-16 03:16:23,123 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 35 [2021-10-16 03:16:23,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:16:23,124 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2021-10-16 03:16:23,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 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) [2021-10-16 03:16:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2021-10-16 03:16:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 03:16:23,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:16:23,126 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] [2021-10-16 03:16:23,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-16 03:16:23,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:16:23,345 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:16:23,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:16:23,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1823455468, now seen corresponding path program 1 times [2021-10-16 03:16:23,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:16:23,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047156299] [2021-10-16 03:16:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:16:23,346 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:16:23,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:16:23,347 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:16:23,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 03:16:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:16:23,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 03:16:23,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:16:23,888 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 [2021-10-16 03:16:24,114 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 11 treesize of output 7 [2021-10-16 03:16:24,120 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 17 treesize of output 13 [2021-10-16 03:16:24,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-16 03:16:24,170 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 20 treesize of output 12 [2021-10-16 03:16:24,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:16:24,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:16:24,612 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 32 [2021-10-16 03:16:24,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:16:24,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:16:24,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:16:24,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:16:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:16:25,257 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:16:25,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047156299] [2021-10-16 03:16:25,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047156299] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:16:25,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:16:25,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-16 03:16:25,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707448002] [2021-10-16 03:16:25,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 03:16:25,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:16:25,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 03:16:25,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-16 03:16:25,260 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:16:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:16:27,201 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2021-10-16 03:16:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 03:16:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 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 35 [2021-10-16 03:16:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:16:27,204 INFO L225 Difference]: With dead ends: 132 [2021-10-16 03:16:27,204 INFO L226 Difference]: Without dead ends: 132 [2021-10-16 03:16:27,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1312.3ms TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-10-16 03:16:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-16 03:16:27,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 83. [2021-10-16 03:16:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 67 states have (on average 1.3432835820895523) internal successors, (90), 82 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:16:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2021-10-16 03:16:27,209 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 35 [2021-10-16 03:16:27,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:16:27,209 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2021-10-16 03:16:27,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:16:27,210 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2021-10-16 03:16:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-16 03:16:27,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:16:27,211 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] [2021-10-16 03:16:27,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:16:27,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:16:27,421 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:16:27,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:16:27,422 INFO L82 PathProgramCache]: Analyzing trace with hash -692545963, now seen corresponding path program 1 times [2021-10-16 03:16:27,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:16:27,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850903252] [2021-10-16 03:16:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:16:27,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:16:27,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:16:27,425 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:16:27,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 03:16:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:16:27,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 03:16:27,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:16:28,111 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 16 treesize of output 12 [2021-10-16 03:16:28,133 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 16 treesize of output 8 [2021-10-16 03:16:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:16:28,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:16:28,209 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 30 treesize of output 26 [2021-10-16 03:16:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:16:28,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:16:28,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850903252] [2021-10-16 03:16:28,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850903252] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:16:28,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:16:28,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-10-16 03:16:28,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140388304] [2021-10-16 03:16:28,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:16:28,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:16:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:16:28,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:16:28,381 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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) [2021-10-16 03:16:28,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:16:28,905 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2021-10-16 03:16:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:16:28,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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) Word has length 36 [2021-10-16 03:16:28,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:16:28,907 INFO L225 Difference]: With dead ends: 111 [2021-10-16 03:16:28,907 INFO L226 Difference]: Without dead ends: 111 [2021-10-16 03:16:28,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 215.5ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-16 03:16:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-16 03:16:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2021-10-16 03:16:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 67 states have (on average 1.328358208955224) internal successors, (89), 82 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) [2021-10-16 03:16:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2021-10-16 03:16:28,913 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 36 [2021-10-16 03:16:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:16:28,913 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2021-10-16 03:16:28,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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) [2021-10-16 03:16:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2021-10-16 03:16:28,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-16 03:16:28,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:16:28,915 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] [2021-10-16 03:16:28,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 03:16:29,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:16:29,129 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-16 03:16:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:16:29,129 INFO L82 PathProgramCache]: Analyzing trace with hash -435534134, now seen corresponding path program 1 times [2021-10-16 03:16:29,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:16:29,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238043711] [2021-10-16 03:16:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:16:29,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:16:29,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:16:29,131 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:16:29,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 03:16:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:16:29,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-16 03:16:29,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:16:29,833 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 [2021-10-16 03:16:30,071 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-16 03:16:30,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-10-16 03:16:30,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-16 03:16:30,728 INFO L354 Elim1Store]: treesize reduction 86, result has 36.3 percent of original size [2021-10-16 03:16:30,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 82 [2021-10-16 03:16:30,968 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-16 03:16:30,969 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 21 treesize of output 20 [2021-10-16 03:16:31,066 INFO L354 Elim1Store]: treesize reduction 58, result has 30.1 percent of original size [2021-10-16 03:16:31,067 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 84 treesize of output 83 [2021-10-16 03:16:31,504 INFO L354 Elim1Store]: treesize reduction 122, result has 16.4 percent of original size [2021-10-16 03:16:31,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 142 treesize of output 132 [2021-10-16 03:16:31,598 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-16 03:16:31,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 118 [2021-10-16 03:16:33,425 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 03:16:33,425 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 125 treesize of output 111 [2021-10-16 03:16:34,761 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-10-16 03:16:34,761 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 91 [2021-10-16 03:16:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:16:35,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:16:35,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:16:35,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-16 03:16:35,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:16:35,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-16 03:16:46,151 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 656 treesize of output 644 [2021-10-16 03:20:23,398 INFO L354 Elim1Store]: treesize reduction 537, result has 41.2 percent of original size [2021-10-16 03:20:23,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 14 new quantified variables, introduced 78 case distinctions, treesize of input 24817 treesize of output 24072 [2021-10-16 03:20:23,763 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:20:23,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238043711] [2021-10-16 03:20:23,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 03:20:23,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1271273306] [2021-10-16 03:20:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:23,765 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:20:23,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:20:23,767 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:20:23,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-16 03:20:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:24,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-16 03:20:24,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:24,734 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 [2021-10-16 03:20:25,426 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 03:20:25,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-10-16 03:20:26,128 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 31 treesize of output 27 [2021-10-16 03:20:26,892 INFO L354 Elim1Store]: treesize reduction 66, result has 42.6 percent of original size [2021-10-16 03:20:26,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 54 treesize of output 83 [2021-10-16 03:20:27,329 INFO L354 Elim1Store]: treesize reduction 46, result has 35.2 percent of original size [2021-10-16 03:20:27,329 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 3 case distinctions, treesize of input 99 treesize of output 86 [2021-10-16 03:20:27,656 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-16 03:20:27,657 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 21 treesize of output 20 [2021-10-16 03:20:28,076 INFO L354 Elim1Store]: treesize reduction 110, result has 17.9 percent of original size [2021-10-16 03:20:28,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 140 [2021-10-16 03:20:28,144 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-16 03:20:28,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 139 treesize of output 130 [2021-10-16 03:20:30,311 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 03:20:30,311 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 145 treesize of output 131 [2021-10-16 03:20:34,521 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-10-16 03:20:34,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 79 [2021-10-16 03:20:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:35,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:35,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:35,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 03:20:35,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:35,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-16 03:20:37,930 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_6)))) (select .cse0 (select (select .cse0 c_ULTIMATE.start_sll_append_~head.base) c_ULTIMATE.start_sll_append_~head.offset))) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_7)) c_ULTIMATE.start_sll_append_~head.base) c_ULTIMATE.start_sll_append_~head.offset)))))))))))) is different from false [2021-10-16 03:20:39,952 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (ULTIMATE.start_node_create_~temp~0.offset (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv4 32) ULTIMATE.start_node_create_~temp~0.offset))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) .cse1 (_ bv0 32)) ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_6)))) (select .cse0 (select (select .cse0 c_ULTIMATE.start_sll_append_~head.base) c_ULTIMATE.start_sll_append_~head.offset))) (bvadd (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) .cse1 (_ bv0 32)) ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_7)) c_ULTIMATE.start_sll_append_~head.base) c_ULTIMATE.start_sll_append_~head.offset) (_ bv4 32))))))))))) (_ bv1 1)))) is different from false [2021-10-16 03:20:40,001 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 588 treesize of output 576 [2021-10-16 03:21:21,460 INFO L354 Elim1Store]: treesize reduction 537, result has 41.2 percent of original size [2021-10-16 03:21:21,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 14 new quantified variables, introduced 78 case distinctions, treesize of input 251665 treesize of output 244296 [2021-10-16 03:21:23,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 03:21:23,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585841305] [2021-10-16 03:21:23,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:23,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:21:23,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:21:23,872 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:21:23,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-16 03:21:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:24,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-16 03:21:24,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:24,669 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 03:21:24,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-16 03:21:25,566 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 37 treesize of output 33 [2021-10-16 03:21:26,497 INFO L354 Elim1Store]: treesize reduction 66, result has 42.6 percent of original size [2021-10-16 03:21:26,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 92 [2021-10-16 03:21:27,224 INFO L354 Elim1Store]: treesize reduction 58, result has 30.1 percent of original size [2021-10-16 03:21:27,224 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 122 treesize of output 109 [2021-10-16 03:21:27,635 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-16 03:21:27,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-16 03:21:28,102 INFO L354 Elim1Store]: treesize reduction 122, result has 16.4 percent of original size [2021-10-16 03:21:28,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 172 treesize of output 158 [2021-10-16 03:21:28,164 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-16 03:21:28,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 148 [2021-10-16 03:21:30,940 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 03:21:30,941 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 163 treesize of output 149 [2021-10-16 03:21:34,305 INFO L354 Elim1Store]: treesize reduction 32, result has 22.0 percent of original size [2021-10-16 03:21:34,306 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 106 [2021-10-16 03:21:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:36,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:36,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:21:36,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 03:21:36,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:21:36,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-16 03:22:05,974 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_node_create_~temp~0.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv4 32) ULTIMATE.start_node_create_~temp~0.offset))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) .cse1 (_ bv0 32)) ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_8)))) (select .cse0 (select (select .cse0 c_ULTIMATE.start_sll_append_~head.base) c_ULTIMATE.start_sll_append_~head.offset))) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) .cse1 (_ bv0 32)) ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_9)) c_ULTIMATE.start_sll_append_~head.base) c_ULTIMATE.start_sll_append_~head.offset)))))))))))))) (_ bv1 1)))) is different from false [2021-10-16 03:22:06,009 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 621 treesize of output 609 [2021-10-16 03:24:38,244 INFO L354 Elim1Store]: treesize reduction 537, result has 41.2 percent of original size [2021-10-16 03:24:38,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 14 new quantified variables, introduced 78 case distinctions, treesize of input 45455 treesize of output 44454 [2021-10-16 03:24:38,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 03:24:38,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:24:38,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 03:24:38,821 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 03:24:38,821 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 03:24:38,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-16 03:24:38,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 03:24:38,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 03:24:38,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 03:24:38,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 03:24:38,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 03:24:38,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 03:24:38,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-16 03:24:38,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-16 03:24:38,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-16 03:24:38,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-16 03:24:38,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-16 03:24:38,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-16 03:24:38,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-16 03:24:38,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-16 03:24:38,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-16 03:24:38,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-16 03:24:38,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-16 03:24:38,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-16 03:24:38,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-16 03:24:38,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-16 03:24:38,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-16 03:24:38,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-16 03:24:38,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-16 03:24:38,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-16 03:24:38,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-16 03:24:38,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-16 03:24:38,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-16 03:24:38,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-16 03:24:38,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-16 03:24:38,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-16 03:24:38,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-16 03:24:38,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:24:38,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:24:38,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:24:38,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 03:24:38,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 03:24:38,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:24:39,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-16 03:24:39,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-16 03:24:39,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:24:39,438 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:24:39,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:24:39 BoogieIcfgContainer [2021-10-16 03:24:39,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:24:39,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:24:39,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:24:39,453 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:24:39,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:43" (3/4) ... [2021-10-16 03:24:39,470 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 03:24:39,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:24:39,471 INFO L168 Benchmark]: Toolchain (without parser) took 598038.59 ms. Allocated memory was 67.1 MB in the beginning and 337.6 MB in the end (delta: 270.5 MB). Free memory was 47.8 MB in the beginning and 172.3 MB in the end (delta: -124.4 MB). Peak memory consumption was 145.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:24:39,471 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 67.1 MB. Free memory was 47.6 MB in the beginning and 47.6 MB in the end (delta: 53.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:24:39,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.96 ms. Allocated memory is still 67.1 MB. Free memory was 47.6 MB in the beginning and 42.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:24:39,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.53 ms. Allocated memory is still 67.1 MB. Free memory was 42.7 MB in the beginning and 40.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:24:39,472 INFO L168 Benchmark]: Boogie Preprocessor took 60.96 ms. Allocated memory is still 67.1 MB. Free memory was 40.3 MB in the beginning and 38.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:24:39,472 INFO L168 Benchmark]: RCFGBuilder took 1028.74 ms. Allocated memory is still 67.1 MB. Free memory was 38.2 MB in the beginning and 39.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:24:39,473 INFO L168 Benchmark]: TraceAbstraction took 596019.07 ms. Allocated memory was 67.1 MB in the beginning and 337.6 MB in the end (delta: 270.5 MB). Free memory was 39.6 MB in the beginning and 172.3 MB in the end (delta: -132.7 MB). Peak memory consumption was 212.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:24:39,473 INFO L168 Benchmark]: Witness Printer took 17.96 ms. Allocated memory is still 337.6 MB. Free memory is still 172.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:24:39,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 67.1 MB. Free memory was 47.6 MB in the beginning and 47.6 MB in the end (delta: 53.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 819.96 ms. Allocated memory is still 67.1 MB. Free memory was 47.6 MB in the beginning and 42.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.53 ms. Allocated memory is still 67.1 MB. Free memory was 42.7 MB in the beginning and 40.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.96 ms. Allocated memory is still 67.1 MB. Free memory was 40.3 MB in the beginning and 38.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1028.74 ms. Allocated memory is still 67.1 MB. Free memory was 38.2 MB in the beginning and 39.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 596019.07 ms. Allocated memory was 67.1 MB in the beginning and 337.6 MB in the end (delta: 270.5 MB). Free memory was 39.6 MB in the beginning and 172.3 MB in the end (delta: -132.7 MB). Peak memory consumption was 212.9 MB. Max. memory is 16.1 GB. * Witness Printer took 17.96 ms. Allocated memory is still 337.6 MB. Free memory is still 172.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L612] const int len = 2; [L613] const int data = 1; [L614] SLL s = sll_create(len, data); [L584] SLL head = ((void *)0); [L585] COND TRUE len > 0 [L575] SLL temp = (SLL) malloc(sizeof(struct node)); [L576] COND FALSE !(((void *)0) == temp) [L579] temp->next = ((void *)0) [L580] temp->data = data [L581] return temp; [L586] SLL new_head = node_create(data); [L587] new_head->next = head [L588] head = new_head [L585] len-- [L585] COND TRUE len > 0 [L575] SLL temp = (SLL) malloc(sizeof(struct node)); [L576] COND FALSE !(((void *)0) == temp) [L579] temp->next = ((void *)0) [L580] temp->data = data [L581] return temp; [L586] SLL new_head = node_create(data); [L587] new_head->next = head [L588] head = new_head [L585] len-- [L585] COND FALSE !(len > 0) [L590] return head; [L614] SLL s = sll_create(len, data); [L575] SLL temp = (SLL) malloc(sizeof(struct node)); [L576] COND FALSE !(((void *)0) == temp) [L579] temp->next = ((void *)0) [L580] temp->data = data [L581] return temp; [L600] SLL new_last = node_create(data); [L601] EXPR \read(*head) [L601] COND FALSE !(((void *)0) == *head) [L604] EXPR \read(*head) [L604] SLL last = *head; [L605] last->next [L605] COND TRUE last->next [L606] EXPR last->next [L606] last = last->next [L605] last->next - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 604]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 604]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 629]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 629]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 631]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 37 error locations. Started 1 CEGAR loops. OverallTime: 595924.9ms, OverallIterations: 13, TraceHistogramMax: 2, EmptinessCheckTime: 25.7ms, AutomataDifference: 39826.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 668 SDtfs, 3130 SDslu, 1282 SDs, 0 SdLazy, 1894 SolverSat, 163 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 19549.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 564 GetRequests, 409 SyntacticMatches, 5 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 59151.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=0, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 134.9ms AutomataMinimizationTime, 12 MinimizatonAttempts, 411 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 215.3ms SsaConstructionTime, 1355.7ms SatisfiabilityAnalysisTime, 59444.6ms InterpolantComputationTime, 269 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 514 ConstructedInterpolants, 150 QuantifiedInterpolants, 7779 SizeOfPredicates, 115 NumberOfNonLiveVariables, 1427 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 24 InterpolantComputations, 20 PerfectInterpolantSequences, 113/154 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 03:24:39,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd1320d6-9612-4c65-969b-444043cf41e0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...