./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cdf63a831807312c569006a76efbe1414243703d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cdf63a831807312c569006a76efbe1414243703d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:54:02,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:54:02,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:54:02,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:54:02,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:54:02,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:54:02,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:54:02,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:54:02,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:54:02,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:54:02,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:54:02,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:54:02,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:54:02,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:54:02,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:54:02,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:54:02,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:54:02,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:54:02,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:54:02,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:54:02,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:54:02,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:54:02,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:54:02,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:54:02,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:54:02,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:54:02,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:54:02,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:54:02,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:54:02,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:54:02,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:54:02,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:54:02,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:54:02,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:54:02,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:54:02,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:54:02,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:54:02,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:54:02,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:54:02,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:54:02,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:54:02,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-10-13 07:54:02,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:54:02,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:54:02,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:54:02,928 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:54:02,929 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:54:02,929 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:54:02,929 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:54:02,929 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:54:02,929 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:54:02,930 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:54:02,931 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:54:02,931 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:54:02,931 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:54:02,931 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:54:02,932 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:54:02,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:54:02,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:54:02,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:54:02,934 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:54:02,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:54:02,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:54:02,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:54:02,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:54:02,935 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:54:02,935 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:54:02,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:54:02,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:54:02,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:54:02,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:54:02,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:54:02,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:54:02,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:54:02,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:54:02,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:54:02,937 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:54:02,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:54:02,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:54:02,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:54:02,939 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_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdf63a831807312c569006a76efbe1414243703d [2021-10-13 07:54:03,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:54:03,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:54:03,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:54:03,217 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:54:03,217 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:54:03,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/forester-heap/dll-01-1.i [2021-10-13 07:54:03,293 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/data/d770bd6d5/6ee428faa7524e1d83de45cb237741a1/FLAGa3f0977d2 [2021-10-13 07:54:03,902 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:54:03,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i [2021-10-13 07:54:03,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/data/d770bd6d5/6ee428faa7524e1d83de45cb237741a1/FLAGa3f0977d2 [2021-10-13 07:54:04,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/data/d770bd6d5/6ee428faa7524e1d83de45cb237741a1 [2021-10-13 07:54:04,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:54:04,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:54:04,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:54:04,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:54:04,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:54:04,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a68dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04, skipping insertion in model container [2021-10-13 07:54:04,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:54:04,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:54:04,594 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22080,22093] [2021-10-13 07:54:04,613 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22353,22366] [2021-10-13 07:54:04,617 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22587,22600] [2021-10-13 07:54:04,618 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22657,22670] [2021-10-13 07:54:04,621 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22924,22937] [2021-10-13 07:54:04,622 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23032,23045] [2021-10-13 07:54:04,624 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23263,23276] [2021-10-13 07:54:04,624 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23343,23356] [2021-10-13 07:54:04,625 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23422,23435] [2021-10-13 07:54:04,626 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23512,23525] [2021-10-13 07:54:04,627 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23690,23703] [2021-10-13 07:54:04,628 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23768,23781] [2021-10-13 07:54:04,629 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23845,23858] [2021-10-13 07:54:04,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:54:04,641 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:54:04,675 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22080,22093] [2021-10-13 07:54:04,678 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22353,22366] [2021-10-13 07:54:04,681 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22587,22600] [2021-10-13 07:54:04,682 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22657,22670] [2021-10-13 07:54:04,685 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22924,22937] [2021-10-13 07:54:04,686 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23032,23045] [2021-10-13 07:54:04,688 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23263,23276] [2021-10-13 07:54:04,689 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23343,23356] [2021-10-13 07:54:04,690 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23422,23435] [2021-10-13 07:54:04,707 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23512,23525] [2021-10-13 07:54:04,710 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23690,23703] [2021-10-13 07:54:04,721 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23768,23781] [2021-10-13 07:54:04,722 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23845,23858] [2021-10-13 07:54:04,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:54:04,758 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:54:04,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04 WrapperNode [2021-10-13 07:54:04,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:54:04,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:54:04,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:54:04,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:54:04,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:54:04,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:54:04,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:54:04,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:54:04,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:54:04,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:54:04,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:54:04,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:54:04,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (1/1) ... [2021-10-13 07:54:04,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:54:04,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:54:04,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:54:04,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:54:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:54:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:54:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:54:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:54:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:54:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:54:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:54:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:54:05,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:54:05,928 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-13 07:54:05,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:05 BoogieIcfgContainer [2021-10-13 07:54:05,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:54:05,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:54:05,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:54:05,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:54:05,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:54:04" (1/3) ... [2021-10-13 07:54:05,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25755dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:05, skipping insertion in model container [2021-10-13 07:54:05,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:04" (2/3) ... [2021-10-13 07:54:05,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25755dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:05, skipping insertion in model container [2021-10-13 07:54:05,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:05" (3/3) ... [2021-10-13 07:54:05,943 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2021-10-13 07:54:05,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:54:05,952 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2021-10-13 07:54:05,997 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:54:06,003 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 [2021-10-13 07:54:06,004 INFO L340 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2021-10-13 07:54:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 93 states have (on average 2.4301075268817205) internal successors, (226), 177 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 07:54:06,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:06,030 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 07:54:06,030 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:06,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:06,036 INFO L82 PathProgramCache]: Analyzing trace with hash 14915, now seen corresponding path program 1 times [2021-10-13 07:54:06,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:06,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119891910] [2021-10-13 07:54:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:06,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:06,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:06,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119891910] [2021-10-13 07:54:06,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119891910] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:06,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:06,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:54:06,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784655519] [2021-10-13 07:54:06,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:54:06,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:54:06,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:06,220 INFO L87 Difference]: Start difference. First operand has 178 states, 93 states have (on average 2.4301075268817205) internal successors, (226), 177 states have internal predecessors, (226), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:06,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:06,380 INFO L93 Difference]: Finished difference Result 177 states and 185 transitions. [2021-10-13 07:54:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:54:06,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-13 07:54:06,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:06,391 INFO L225 Difference]: With dead ends: 177 [2021-10-13 07:54:06,391 INFO L226 Difference]: Without dead ends: 175 [2021-10-13 07:54:06,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-13 07:54:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-10-13 07:54:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 96 states have (on average 1.8958333333333333) internal successors, (182), 170 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2021-10-13 07:54:06,433 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 2 [2021-10-13 07:54:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:06,433 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 182 transitions. [2021-10-13 07:54:06,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 182 transitions. [2021-10-13 07:54:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 07:54:06,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:06,435 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 07:54:06,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:54:06,435 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:06,436 INFO L82 PathProgramCache]: Analyzing trace with hash 14916, now seen corresponding path program 1 times [2021-10-13 07:54:06,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:06,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488824245] [2021-10-13 07:54:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:06,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:06,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:06,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488824245] [2021-10-13 07:54:06,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488824245] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:06,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:06,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:54:06,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477793840] [2021-10-13 07:54:06,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:54:06,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:06,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:54:06,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:06,487 INFO L87 Difference]: Start difference. First operand 171 states and 182 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:06,622 INFO L93 Difference]: Finished difference Result 197 states and 207 transitions. [2021-10-13 07:54:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:54:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-13 07:54:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:06,625 INFO L225 Difference]: With dead ends: 197 [2021-10-13 07:54:06,625 INFO L226 Difference]: Without dead ends: 197 [2021-10-13 07:54:06,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-13 07:54:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 178. [2021-10-13 07:54:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 111 states have (on average 1.8018018018018018) internal successors, (200), 177 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 200 transitions. [2021-10-13 07:54:06,638 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 200 transitions. Word has length 2 [2021-10-13 07:54:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:06,639 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 200 transitions. [2021-10-13 07:54:06,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 200 transitions. [2021-10-13 07:54:06,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:54:06,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:06,640 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:54:06,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:54:06,641 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:06,641 INFO L82 PathProgramCache]: Analyzing trace with hash 444309189, now seen corresponding path program 1 times [2021-10-13 07:54:06,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:06,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432626822] [2021-10-13 07:54:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:06,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:06,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:06,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:06,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432626822] [2021-10-13 07:54:06,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432626822] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:06,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:06,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:54:06,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042996805] [2021-10-13 07:54:06,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:54:06,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:06,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:54:06,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:06,749 INFO L87 Difference]: Start difference. First operand 178 states and 200 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2021-10-13 07:54:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:06,796 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2021-10-13 07:54:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:54:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 [2021-10-13 07:54:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:06,801 INFO L225 Difference]: With dead ends: 193 [2021-10-13 07:54:06,801 INFO L226 Difference]: Without dead ends: 193 [2021-10-13 07:54:06,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-13 07:54:06,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 176. [2021-10-13 07:54:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 110 states have (on average 1.790909090909091) internal successors, (197), 175 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 197 transitions. [2021-10-13 07:54:06,827 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 197 transitions. Word has length 5 [2021-10-13 07:54:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:06,827 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 197 transitions. [2021-10-13 07:54:06,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2021-10-13 07:54:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 197 transitions. [2021-10-13 07:54:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:54:06,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:06,828 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:06,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:54:06,829 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:06,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:06,829 INFO L82 PathProgramCache]: Analyzing trace with hash 157267736, now seen corresponding path program 1 times [2021-10-13 07:54:06,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:06,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497523470] [2021-10-13 07:54:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:06,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:06,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:06,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497523470] [2021-10-13 07:54:06,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497523470] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:06,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:06,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:54:06,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324893075] [2021-10-13 07:54:06,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:06,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:06,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:06,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:06,967 INFO L87 Difference]: Start difference. First operand 176 states and 197 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:07,164 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2021-10-13 07:54:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:54:07,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 07:54:07,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:07,166 INFO L225 Difference]: With dead ends: 175 [2021-10-13 07:54:07,166 INFO L226 Difference]: Without dead ends: 175 [2021-10-13 07:54:07,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-13 07:54:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-10-13 07:54:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 110 states have (on average 1.7818181818181817) internal successors, (196), 174 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 196 transitions. [2021-10-13 07:54:07,187 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 196 transitions. Word has length 10 [2021-10-13 07:54:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:07,188 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 196 transitions. [2021-10-13 07:54:07,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:07,189 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 196 transitions. [2021-10-13 07:54:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:54:07,189 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:07,189 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:07,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:54:07,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:07,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:07,190 INFO L82 PathProgramCache]: Analyzing trace with hash 157267737, now seen corresponding path program 1 times [2021-10-13 07:54:07,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:07,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534444420] [2021-10-13 07:54:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:07,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:07,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:07,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534444420] [2021-10-13 07:54:07,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534444420] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:07,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:07,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:54:07,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778564193] [2021-10-13 07:54:07,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:07,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:07,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:07,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:07,317 INFO L87 Difference]: Start difference. First operand 175 states and 196 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:07,520 INFO L93 Difference]: Finished difference Result 174 states and 195 transitions. [2021-10-13 07:54:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:54:07,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 07:54:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:07,526 INFO L225 Difference]: With dead ends: 174 [2021-10-13 07:54:07,526 INFO L226 Difference]: Without dead ends: 174 [2021-10-13 07:54:07,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:07,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-13 07:54:07,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-10-13 07:54:07,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 110 states have (on average 1.7727272727272727) internal successors, (195), 173 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 195 transitions. [2021-10-13 07:54:07,543 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 195 transitions. Word has length 10 [2021-10-13 07:54:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:07,543 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 195 transitions. [2021-10-13 07:54:07,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:07,544 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 195 transitions. [2021-10-13 07:54:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:54:07,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:07,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:07,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:54:07,545 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:07,546 INFO L82 PathProgramCache]: Analyzing trace with hash 810842142, now seen corresponding path program 1 times [2021-10-13 07:54:07,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:07,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002774225] [2021-10-13 07:54:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:07,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:07,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:07,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002774225] [2021-10-13 07:54:07,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002774225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:07,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:07,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:54:07,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818549034] [2021-10-13 07:54:07,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:54:07,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:54:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:54:07,719 INFO L87 Difference]: Start difference. First operand 174 states and 195 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:08,059 INFO L93 Difference]: Finished difference Result 174 states and 194 transitions. [2021-10-13 07:54:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:54:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 07:54:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:08,061 INFO L225 Difference]: With dead ends: 174 [2021-10-13 07:54:08,061 INFO L226 Difference]: Without dead ends: 174 [2021-10-13 07:54:08,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 85.9ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:54:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-13 07:54:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2021-10-13 07:54:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.7636363636363637) internal successors, (194), 172 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 194 transitions. [2021-10-13 07:54:08,066 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 194 transitions. Word has length 12 [2021-10-13 07:54:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:08,066 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 194 transitions. [2021-10-13 07:54:08,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 194 transitions. [2021-10-13 07:54:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:54:08,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:08,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:08,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:54:08,068 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:08,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:08,068 INFO L82 PathProgramCache]: Analyzing trace with hash 810842143, now seen corresponding path program 1 times [2021-10-13 07:54:08,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:08,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024040086] [2021-10-13 07:54:08,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:08,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:08,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:08,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024040086] [2021-10-13 07:54:08,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024040086] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:08,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:08,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:54:08,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314991487] [2021-10-13 07:54:08,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:54:08,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:54:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:54:08,205 INFO L87 Difference]: Start difference. First operand 173 states and 194 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:08,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:08,568 INFO L93 Difference]: Finished difference Result 173 states and 193 transitions. [2021-10-13 07:54:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:54:08,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 07:54:08,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:08,570 INFO L225 Difference]: With dead ends: 173 [2021-10-13 07:54:08,570 INFO L226 Difference]: Without dead ends: 173 [2021-10-13 07:54:08,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:54:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-13 07:54:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-10-13 07:54:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 110 states have (on average 1.7545454545454546) internal successors, (193), 171 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 193 transitions. [2021-10-13 07:54:08,575 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 193 transitions. Word has length 12 [2021-10-13 07:54:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:08,575 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 193 transitions. [2021-10-13 07:54:08,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 193 transitions. [2021-10-13 07:54:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:54:08,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:08,576 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:08,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:54:08,576 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:08,577 INFO L82 PathProgramCache]: Analyzing trace with hash 290934283, now seen corresponding path program 1 times [2021-10-13 07:54:08,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:08,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131540147] [2021-10-13 07:54:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:08,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:08,599 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:08,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131540147] [2021-10-13 07:54:08,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131540147] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:08,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:08,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:54:08,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092601586] [2021-10-13 07:54:08,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:54:08,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:08,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:54:08,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:08,602 INFO L87 Difference]: Start difference. First operand 172 states and 193 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:08,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:08,613 INFO L93 Difference]: Finished difference Result 173 states and 194 transitions. [2021-10-13 07:54:08,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:54:08,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 07:54:08,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:08,615 INFO L225 Difference]: With dead ends: 173 [2021-10-13 07:54:08,615 INFO L226 Difference]: Without dead ends: 173 [2021-10-13 07:54:08,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-13 07:54:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-10-13 07:54:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 111 states have (on average 1.7477477477477477) internal successors, (194), 172 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 194 transitions. [2021-10-13 07:54:08,622 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 194 transitions. Word has length 12 [2021-10-13 07:54:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:08,622 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 194 transitions. [2021-10-13 07:54:08,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 194 transitions. [2021-10-13 07:54:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:54:08,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:08,625 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:08,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:54:08,625 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:08,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:08,626 INFO L82 PathProgramCache]: Analyzing trace with hash 429463557, now seen corresponding path program 1 times [2021-10-13 07:54:08,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:08,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536052595] [2021-10-13 07:54:08,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:08,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:08,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:08,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536052595] [2021-10-13 07:54:08,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536052595] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:08,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:08,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:54:08,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376563077] [2021-10-13 07:54:08,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:08,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:08,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:08,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:08,715 INFO L87 Difference]: Start difference. First operand 173 states and 194 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-10-13 07:54:08,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:08,867 INFO L93 Difference]: Finished difference Result 253 states and 279 transitions. [2021-10-13 07:54:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:54:08,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 13 [2021-10-13 07:54:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:08,870 INFO L225 Difference]: With dead ends: 253 [2021-10-13 07:54:08,870 INFO L226 Difference]: Without dead ends: 253 [2021-10-13 07:54:08,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-13 07:54:08,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 170. [2021-10-13 07:54:08,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 109 states have (on average 1.7522935779816513) internal successors, (191), 169 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 191 transitions. [2021-10-13 07:54:08,875 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 191 transitions. Word has length 13 [2021-10-13 07:54:08,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:08,875 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 191 transitions. [2021-10-13 07:54:08,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-10-13 07:54:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 191 transitions. [2021-10-13 07:54:08,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:54:08,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:08,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:08,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:54:08,877 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:08,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:08,877 INFO L82 PathProgramCache]: Analyzing trace with hash -520498923, now seen corresponding path program 1 times [2021-10-13 07:54:08,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:08,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546294110] [2021-10-13 07:54:08,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:08,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:08,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:08,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546294110] [2021-10-13 07:54:08,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546294110] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:08,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:08,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:54:08,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014630934] [2021-10-13 07:54:08,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:54:08,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:08,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:54:08,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:54:08,912 INFO L87 Difference]: Start difference. First operand 170 states and 191 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:09,028 INFO L93 Difference]: Finished difference Result 253 states and 278 transitions. [2021-10-13 07:54:09,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:54:09,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 07:54:09,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:09,030 INFO L225 Difference]: With dead ends: 253 [2021-10-13 07:54:09,030 INFO L226 Difference]: Without dead ends: 253 [2021-10-13 07:54:09,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:09,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-13 07:54:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 172. [2021-10-13 07:54:09,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 111 states have (on average 1.7387387387387387) internal successors, (193), 171 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 193 transitions. [2021-10-13 07:54:09,035 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 193 transitions. Word has length 16 [2021-10-13 07:54:09,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:09,035 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 193 transitions. [2021-10-13 07:54:09,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,036 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 193 transitions. [2021-10-13 07:54:09,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:54:09,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:09,036 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:09,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:54:09,037 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:09,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:09,037 INFO L82 PathProgramCache]: Analyzing trace with hash -17691121, now seen corresponding path program 1 times [2021-10-13 07:54:09,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:09,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250125740] [2021-10-13 07:54:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:09,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:09,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:09,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250125740] [2021-10-13 07:54:09,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250125740] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:09,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:09,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:54:09,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629293825] [2021-10-13 07:54:09,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:54:09,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:09,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:54:09,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:54:09,073 INFO L87 Difference]: Start difference. First operand 172 states and 193 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:09,224 INFO L93 Difference]: Finished difference Result 166 states and 185 transitions. [2021-10-13 07:54:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:54:09,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 07:54:09,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:09,226 INFO L225 Difference]: With dead ends: 166 [2021-10-13 07:54:09,227 INFO L226 Difference]: Without dead ends: 166 [2021-10-13 07:54:09,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:09,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-13 07:54:09,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2021-10-13 07:54:09,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 113 states have (on average 1.6194690265486726) internal successors, (183), 161 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 183 transitions. [2021-10-13 07:54:09,231 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 183 transitions. Word has length 17 [2021-10-13 07:54:09,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:09,232 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 183 transitions. [2021-10-13 07:54:09,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,232 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 183 transitions. [2021-10-13 07:54:09,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:54:09,233 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:09,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:09,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:54:09,233 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:09,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:09,234 INFO L82 PathProgramCache]: Analyzing trace with hash -17691120, now seen corresponding path program 1 times [2021-10-13 07:54:09,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:09,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053145810] [2021-10-13 07:54:09,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:09,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:09,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:09,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053145810] [2021-10-13 07:54:09,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053145810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:09,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:09,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:54:09,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041960974] [2021-10-13 07:54:09,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:54:09,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:09,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:54:09,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:09,364 INFO L87 Difference]: Start difference. First operand 162 states and 183 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:09,597 INFO L93 Difference]: Finished difference Result 215 states and 228 transitions. [2021-10-13 07:54:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:54:09,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 07:54:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:09,599 INFO L225 Difference]: With dead ends: 215 [2021-10-13 07:54:09,599 INFO L226 Difference]: Without dead ends: 215 [2021-10-13 07:54:09,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:54:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-13 07:54:09,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 181. [2021-10-13 07:54:09,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 132 states have (on average 1.628787878787879) internal successors, (215), 180 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 215 transitions. [2021-10-13 07:54:09,605 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 215 transitions. Word has length 17 [2021-10-13 07:54:09,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:09,605 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 215 transitions. [2021-10-13 07:54:09,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,605 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 215 transitions. [2021-10-13 07:54:09,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:54:09,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:09,606 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:09,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 07:54:09,607 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:09,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:09,607 INFO L82 PathProgramCache]: Analyzing trace with hash 179039567, now seen corresponding path program 1 times [2021-10-13 07:54:09,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:09,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576740604] [2021-10-13 07:54:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:09,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:09,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:09,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576740604] [2021-10-13 07:54:09,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576740604] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:09,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:09,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:54:09,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160274819] [2021-10-13 07:54:09,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:09,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:09,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:09,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:09,643 INFO L87 Difference]: Start difference. First operand 181 states and 215 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:09,795 INFO L93 Difference]: Finished difference Result 180 states and 213 transitions. [2021-10-13 07:54:09,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:54:09,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2021-10-13 07:54:09,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:09,797 INFO L225 Difference]: With dead ends: 180 [2021-10-13 07:54:09,797 INFO L226 Difference]: Without dead ends: 180 [2021-10-13 07:54:09,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:09,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-13 07:54:09,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-13 07:54:09,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 179 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 213 transitions. [2021-10-13 07:54:09,809 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 213 transitions. Word has length 19 [2021-10-13 07:54:09,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:09,809 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 213 transitions. [2021-10-13 07:54:09,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,810 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 213 transitions. [2021-10-13 07:54:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:54:09,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:09,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:09,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 07:54:09,812 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:09,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:09,813 INFO L82 PathProgramCache]: Analyzing trace with hash 179039568, now seen corresponding path program 1 times [2021-10-13 07:54:09,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:09,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657201452] [2021-10-13 07:54:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:09,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:09,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:09,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657201452] [2021-10-13 07:54:09,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657201452] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:09,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:09,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:54:09,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341608197] [2021-10-13 07:54:09,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:09,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:09,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:09,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:09,892 INFO L87 Difference]: Start difference. First operand 180 states and 213 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:10,047 INFO L93 Difference]: Finished difference Result 179 states and 211 transitions. [2021-10-13 07:54:10,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:54:10,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2021-10-13 07:54:10,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:10,048 INFO L225 Difference]: With dead ends: 179 [2021-10-13 07:54:10,048 INFO L226 Difference]: Without dead ends: 179 [2021-10-13 07:54:10,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-13 07:54:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-10-13 07:54:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 132 states have (on average 1.5984848484848484) internal successors, (211), 178 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 211 transitions. [2021-10-13 07:54:10,053 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 211 transitions. Word has length 19 [2021-10-13 07:54:10,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:10,053 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 211 transitions. [2021-10-13 07:54:10,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:10,054 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 211 transitions. [2021-10-13 07:54:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:54:10,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:10,054 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:10,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 07:54:10,055 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:10,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:10,055 INFO L82 PathProgramCache]: Analyzing trace with hash 178758852, now seen corresponding path program 1 times [2021-10-13 07:54:10,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:10,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895846740] [2021-10-13 07:54:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:10,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:10,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:10,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895846740] [2021-10-13 07:54:10,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895846740] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:10,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:10,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:54:10,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279626006] [2021-10-13 07:54:10,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:54:10,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:10,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:54:10,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:54:10,087 INFO L87 Difference]: Start difference. First operand 179 states and 211 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:10,203 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2021-10-13 07:54:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:54:10,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2021-10-13 07:54:10,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:10,205 INFO L225 Difference]: With dead ends: 207 [2021-10-13 07:54:10,205 INFO L226 Difference]: Without dead ends: 207 [2021-10-13 07:54:10,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:10,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-13 07:54:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 177. [2021-10-13 07:54:10,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 131 states have (on average 1.5877862595419847) internal successors, (208), 176 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:10,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 208 transitions. [2021-10-13 07:54:10,212 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 208 transitions. Word has length 19 [2021-10-13 07:54:10,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:10,212 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 208 transitions. [2021-10-13 07:54:10,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:10,213 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 208 transitions. [2021-10-13 07:54:10,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:54:10,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:10,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:10,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 07:54:10,214 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:10,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:10,215 INFO L82 PathProgramCache]: Analyzing trace with hash 258678709, now seen corresponding path program 1 times [2021-10-13 07:54:10,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:10,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248616060] [2021-10-13 07:54:10,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:10,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:10,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:10,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248616060] [2021-10-13 07:54:10,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248616060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:10,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:10,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:54:10,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466161055] [2021-10-13 07:54:10,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:54:10,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:10,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:54:10,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:54:10,337 INFO L87 Difference]: Start difference. First operand 177 states and 208 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:10,638 INFO L93 Difference]: Finished difference Result 177 states and 207 transitions. [2021-10-13 07:54:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:54:10,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 07:54:10,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:10,640 INFO L225 Difference]: With dead ends: 177 [2021-10-13 07:54:10,640 INFO L226 Difference]: Without dead ends: 177 [2021-10-13 07:54:10,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:54:10,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-13 07:54:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2021-10-13 07:54:10,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 131 states have (on average 1.5801526717557253) internal successors, (207), 175 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 207 transitions. [2021-10-13 07:54:10,644 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 207 transitions. Word has length 21 [2021-10-13 07:54:10,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:10,645 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 207 transitions. [2021-10-13 07:54:10,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 207 transitions. [2021-10-13 07:54:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:54:10,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:10,646 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:10,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 07:54:10,646 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:10,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:10,646 INFO L82 PathProgramCache]: Analyzing trace with hash 258678710, now seen corresponding path program 1 times [2021-10-13 07:54:10,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:10,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899484710] [2021-10-13 07:54:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:10,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:10,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:10,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899484710] [2021-10-13 07:54:10,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899484710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:10,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:10,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 07:54:10,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218761455] [2021-10-13 07:54:10,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:54:10,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:54:10,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:54:10,804 INFO L87 Difference]: Start difference. First operand 176 states and 207 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:11,321 INFO L93 Difference]: Finished difference Result 168 states and 198 transitions. [2021-10-13 07:54:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:54:11,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 07:54:11,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:11,323 INFO L225 Difference]: With dead ends: 168 [2021-10-13 07:54:11,323 INFO L226 Difference]: Without dead ends: 168 [2021-10-13 07:54:11,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 240.6ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:54:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-13 07:54:11,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 160. [2021-10-13 07:54:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 125 states have (on average 1.52) internal successors, (190), 159 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2021-10-13 07:54:11,330 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21 [2021-10-13 07:54:11,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:11,331 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2021-10-13 07:54:11,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,331 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2021-10-13 07:54:11,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 07:54:11,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:11,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:11,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 07:54:11,335 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:11,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:11,335 INFO L82 PathProgramCache]: Analyzing trace with hash -517860939, now seen corresponding path program 1 times [2021-10-13 07:54:11,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:11,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831575599] [2021-10-13 07:54:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:11,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:11,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:11,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831575599] [2021-10-13 07:54:11,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831575599] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:11,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:11,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 07:54:11,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617453345] [2021-10-13 07:54:11,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:54:11,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:11,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:54:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:54:11,454 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:11,812 INFO L93 Difference]: Finished difference Result 164 states and 194 transitions. [2021-10-13 07:54:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:54:11,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 23 [2021-10-13 07:54:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:11,813 INFO L225 Difference]: With dead ends: 164 [2021-10-13 07:54:11,814 INFO L226 Difference]: Without dead ends: 164 [2021-10-13 07:54:11,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 154.7ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:54:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-13 07:54:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2021-10-13 07:54:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 123 states have (on average 1.5121951219512195) internal successors, (186), 155 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions. [2021-10-13 07:54:11,818 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 23 [2021-10-13 07:54:11,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:11,818 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 186 transitions. [2021-10-13 07:54:11,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions. [2021-10-13 07:54:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:54:11,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:11,819 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:11,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 07:54:11,819 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1670610503, now seen corresponding path program 1 times [2021-10-13 07:54:11,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:11,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795762904] [2021-10-13 07:54:11,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:11,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:11,840 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:11,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795762904] [2021-10-13 07:54:11,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795762904] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:11,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:11,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:54:11,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107321907] [2021-10-13 07:54:11,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:54:11,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:11,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:54:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:11,842 INFO L87 Difference]: Start difference. First operand 156 states and 186 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:11,850 INFO L93 Difference]: Finished difference Result 221 states and 266 transitions. [2021-10-13 07:54:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:54:11,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 07:54:11,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:11,852 INFO L225 Difference]: With dead ends: 221 [2021-10-13 07:54:11,852 INFO L226 Difference]: Without dead ends: 221 [2021-10-13 07:54:11,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:11,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-10-13 07:54:11,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 160. [2021-10-13 07:54:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 159 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 192 transitions. [2021-10-13 07:54:11,857 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 192 transitions. Word has length 24 [2021-10-13 07:54:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:11,857 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 192 transitions. [2021-10-13 07:54:11,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 192 transitions. [2021-10-13 07:54:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:54:11,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:11,858 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:11,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 07:54:11,858 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:11,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:11,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1670607746, now seen corresponding path program 1 times [2021-10-13 07:54:11,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:11,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405173199] [2021-10-13 07:54:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:11,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:11,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:11,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405173199] [2021-10-13 07:54:11,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405173199] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:11,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:11,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:54:11,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814569293] [2021-10-13 07:54:11,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:54:11,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:11,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:54:11,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:11,891 INFO L87 Difference]: Start difference. First operand 160 states and 192 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:11,906 INFO L93 Difference]: Finished difference Result 158 states and 189 transitions. [2021-10-13 07:54:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:54:11,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 07:54:11,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:11,908 INFO L225 Difference]: With dead ends: 158 [2021-10-13 07:54:11,908 INFO L226 Difference]: Without dead ends: 158 [2021-10-13 07:54:11,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-13 07:54:11,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-10-13 07:54:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 126 states have (on average 1.5) internal successors, (189), 157 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 189 transitions. [2021-10-13 07:54:11,912 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 189 transitions. Word has length 24 [2021-10-13 07:54:11,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:11,913 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 189 transitions. [2021-10-13 07:54:11,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:11,913 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 189 transitions. [2021-10-13 07:54:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:54:11,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:11,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:11,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-13 07:54:11,914 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:11,914 INFO L82 PathProgramCache]: Analyzing trace with hash -249228235, now seen corresponding path program 1 times [2021-10-13 07:54:11,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:11,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110137233] [2021-10-13 07:54:11,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:11,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:11,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:11,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110137233] [2021-10-13 07:54:11,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110137233] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:11,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:11,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:54:11,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147262219] [2021-10-13 07:54:11,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:54:11,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:54:11,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:11,995 INFO L87 Difference]: Start difference. First operand 158 states and 189 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:12,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:12,228 INFO L93 Difference]: Finished difference Result 250 states and 288 transitions. [2021-10-13 07:54:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:54:12,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:54:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:12,232 INFO L225 Difference]: With dead ends: 250 [2021-10-13 07:54:12,232 INFO L226 Difference]: Without dead ends: 250 [2021-10-13 07:54:12,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:54:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-13 07:54:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 169. [2021-10-13 07:54:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 137 states have (on average 1.467153284671533) internal successors, (201), 168 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 201 transitions. [2021-10-13 07:54:12,236 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 201 transitions. Word has length 25 [2021-10-13 07:54:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:12,237 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 201 transitions. [2021-10-13 07:54:12,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 201 transitions. [2021-10-13 07:54:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 07:54:12,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:12,237 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:12,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-13 07:54:12,238 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:12,238 INFO L82 PathProgramCache]: Analyzing trace with hash 927884435, now seen corresponding path program 1 times [2021-10-13 07:54:12,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:12,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614293291] [2021-10-13 07:54:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:12,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:12,354 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:12,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614293291] [2021-10-13 07:54:12,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614293291] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:54:12,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459772562] [2021-10-13 07:54:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:12,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:54:12,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:54:12,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:54:12,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:54:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:12,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 07:54:12,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:12,561 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 [2021-10-13 07:54:12,566 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 11 treesize of output 7 [2021-10-13 07:54:12,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:12,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 07:54:12,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:12,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 07:54:12,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:12,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:12,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:12,817 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:12,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-13 07:54:12,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:12,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:12,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:12,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-10-13 07:54:13,329 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-13 07:54:13,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 50 [2021-10-13 07:54:13,366 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-13 07:54:13,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 25 [2021-10-13 07:54:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:13,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:18,500 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 48 treesize of output 46 [2021-10-13 07:54:18,512 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 46 treesize of output 44 [2021-10-13 07:54:18,518 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 66 treesize of output 64 [2021-10-13 07:54:18,522 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 65 treesize of output 63 [2021-10-13 07:54:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:18,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459772562] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:54:18,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [401732484] [2021-10-13 07:54:18,592 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-10-13 07:54:18,593 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:54:18,597 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:54:18,608 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:54:18,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:54:18,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:18,667 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:54:18,668 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:18,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 07:54:18,669 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:54:18,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:18,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:54:18,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-13 07:54:18,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:18,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:18,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:18,701 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 [2021-10-13 07:54:18,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:18,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:54:18,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:18,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:54:18,703 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:54:18,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:54:18,719 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:18,722 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:18,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-13 07:54:18,725 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:54:18,725 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:128, output treesize:131 [2021-10-13 07:54:18,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 07:54:18,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:54:18,948 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_129| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:54:18,951 INFO L168 Benchmark]: Toolchain (without parser) took 14774.36 ms. Allocated memory was 132.1 MB in the beginning and 197.1 MB in the end (delta: 65.0 MB). Free memory was 97.3 MB in the beginning and 72.8 MB in the end (delta: 24.5 MB). Peak memory consumption was 89.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:18,951 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory was 44.5 MB in the beginning and 44.5 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:18,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.47 ms. Allocated memory is still 132.1 MB. Free memory was 97.1 MB in the beginning and 97.2 MB in the end (delta: -155.4 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:18,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.18 ms. Allocated memory is still 132.1 MB. Free memory was 97.2 MB in the beginning and 94.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:18,952 INFO L168 Benchmark]: Boogie Preprocessor took 38.17 ms. Allocated memory is still 132.1 MB. Free memory was 94.8 MB in the beginning and 92.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:18,952 INFO L168 Benchmark]: RCFGBuilder took 1044.05 ms. Allocated memory is still 132.1 MB. Free memory was 92.7 MB in the beginning and 98.8 MB in the end (delta: -6.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:18,953 INFO L168 Benchmark]: TraceAbstraction took 13016.06 ms. Allocated memory was 132.1 MB in the beginning and 197.1 MB in the end (delta: 65.0 MB). Free memory was 98.2 MB in the beginning and 72.8 MB in the end (delta: 25.4 MB). Peak memory consumption was 90.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:18,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory was 44.5 MB in the beginning and 44.5 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 569.47 ms. Allocated memory is still 132.1 MB. Free memory was 97.1 MB in the beginning and 97.2 MB in the end (delta: -155.4 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.18 ms. Allocated memory is still 132.1 MB. Free memory was 97.2 MB in the beginning and 94.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.17 ms. Allocated memory is still 132.1 MB. Free memory was 94.8 MB in the beginning and 92.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1044.05 ms. Allocated memory is still 132.1 MB. Free memory was 92.7 MB in the beginning and 98.8 MB in the end (delta: -6.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13016.06 ms. Allocated memory was 132.1 MB in the beginning and 197.1 MB in the end (delta: 65.0 MB). Free memory was 98.2 MB in the beginning and 72.8 MB in the end (delta: 25.4 MB). Peak memory consumption was 90.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_129| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_129|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:54:18,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:54:21,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:54:21,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:54:21,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:54:21,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:54:21,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:54:21,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:54:21,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:54:21,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:54:21,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:54:21,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:54:21,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:54:21,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:54:21,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:54:21,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:54:21,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:54:21,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:54:21,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:54:21,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:54:21,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:54:21,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:54:21,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:54:21,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:54:21,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:54:21,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:54:21,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:54:21,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:54:21,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:54:21,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:54:21,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:54:21,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:54:21,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:54:21,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:54:21,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:54:21,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:54:21,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:54:21,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:54:21,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:54:21,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:54:21,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:54:21,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:54:21,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2021-10-13 07:54:21,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:54:21,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:54:21,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:54:21,509 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:54:21,509 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:54:21,509 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:54:21,510 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:54:21,510 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:54:21,510 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:54:21,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:54:21,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:54:21,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:54:21,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:54:21,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:54:21,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:54:21,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:54:21,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:54:21,513 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:54:21,513 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:54:21,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:54:21,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:54:21,513 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:54:21,514 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:54:21,514 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:54:21,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:54:21,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:54:21,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:54:21,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:54:21,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:54:21,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:54:21,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:54:21,516 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:54:21,516 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:54:21,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:54:21,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:54:21,517 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_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdf63a831807312c569006a76efbe1414243703d [2021-10-13 07:54:21,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:54:21,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:54:21,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:54:21,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:54:21,893 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:54:21,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/forester-heap/dll-01-1.i [2021-10-13 07:54:21,958 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/data/6e2b6fbc2/1a83f0d4d6b9457bb02e91a57c696f31/FLAG218d608ed [2021-10-13 07:54:22,441 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:54:22,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i [2021-10-13 07:54:22,462 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/data/6e2b6fbc2/1a83f0d4d6b9457bb02e91a57c696f31/FLAG218d608ed [2021-10-13 07:54:22,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/data/6e2b6fbc2/1a83f0d4d6b9457bb02e91a57c696f31 [2021-10-13 07:54:22,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:54:22,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:54:22,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:54:22,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:54:22,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:54:22,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:22" (1/1) ... [2021-10-13 07:54:22,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbe01ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:22, skipping insertion in model container [2021-10-13 07:54:22,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:22" (1/1) ... [2021-10-13 07:54:22,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:54:22,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:54:23,158 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22080,22093] [2021-10-13 07:54:23,164 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22353,22366] [2021-10-13 07:54:23,181 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22587,22600] [2021-10-13 07:54:23,182 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22657,22670] [2021-10-13 07:54:23,185 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22924,22937] [2021-10-13 07:54:23,186 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23032,23045] [2021-10-13 07:54:23,188 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23263,23276] [2021-10-13 07:54:23,190 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23343,23356] [2021-10-13 07:54:23,199 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23422,23435] [2021-10-13 07:54:23,211 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23512,23525] [2021-10-13 07:54:23,213 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23690,23703] [2021-10-13 07:54:23,214 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23768,23781] [2021-10-13 07:54:23,215 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23845,23858] [2021-10-13 07:54:23,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:54:23,232 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:54:23,265 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22080,22093] [2021-10-13 07:54:23,268 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22353,22366] [2021-10-13 07:54:23,271 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22587,22600] [2021-10-13 07:54:23,271 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22657,22670] [2021-10-13 07:54:23,274 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[22924,22937] [2021-10-13 07:54:23,275 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23032,23045] [2021-10-13 07:54:23,277 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23263,23276] [2021-10-13 07:54:23,278 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23343,23356] [2021-10-13 07:54:23,279 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23422,23435] [2021-10-13 07:54:23,280 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23512,23525] [2021-10-13 07:54:23,282 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23690,23703] [2021-10-13 07:54:23,283 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23768,23781] [2021-10-13 07:54:23,284 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_6975f054-2687-4ca6-b692-4a888d2242fa/sv-benchmarks/c/forester-heap/dll-01-1.i[23845,23858] [2021-10-13 07:54:23,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:54:23,320 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:54:23,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23 WrapperNode [2021-10-13 07:54:23,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:54:23,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:54:23,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:54:23,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:54:23,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:54:23,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:54:23,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:54:23,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:54:23,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:54:23,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:54:23,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:54:23,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:54:23,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:54:23,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:54:23,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:54:23,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:54:23,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:54:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:54:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:54:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:54:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:54:23,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:54:23,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:54:23,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:54:24,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:54:24,409 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-13 07:54:24,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:24 BoogieIcfgContainer [2021-10-13 07:54:24,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:54:24,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:54:24,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:54:24,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:54:24,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:54:22" (1/3) ... [2021-10-13 07:54:24,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75712ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:24, skipping insertion in model container [2021-10-13 07:54:24,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (2/3) ... [2021-10-13 07:54:24,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75712ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:24, skipping insertion in model container [2021-10-13 07:54:24,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:24" (3/3) ... [2021-10-13 07:54:24,429 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2021-10-13 07:54:24,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:54:24,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2021-10-13 07:54:24,501 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:54:24,508 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 [2021-10-13 07:54:24,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2021-10-13 07:54:24,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 112 states have (on average 2.2232142857142856) internal successors, (249), 196 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:54:24,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:24,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:54:24,559 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:24,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:24,565 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-13 07:54:24,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:24,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084723784] [2021-10-13 07:54:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:24,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:24,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:24,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:24,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:54:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:24,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:54:24,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:24,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:54:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:24,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:24,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:24,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084723784] [2021-10-13 07:54:24,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084723784] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:24,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:24,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:54:24,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388277235] [2021-10-13 07:54:24,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:54:24,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:24,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:54:24,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:24,835 INFO L87 Difference]: Start difference. First operand has 197 states, 112 states have (on average 2.2232142857142856) internal successors, (249), 196 states have internal predecessors, (249), 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 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:25,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:25,231 INFO L93 Difference]: Finished difference Result 198 states and 207 transitions. [2021-10-13 07:54:25,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:54:25,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-10-13 07:54:25,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:25,246 INFO L225 Difference]: With dead ends: 198 [2021-10-13 07:54:25,246 INFO L226 Difference]: Without dead ends: 194 [2021-10-13 07:54:25,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:25,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-13 07:54:25,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2021-10-13 07:54:25,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 114 states have (on average 1.763157894736842) internal successors, (201), 188 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 201 transitions. [2021-10-13 07:54:25,315 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 201 transitions. Word has length 3 [2021-10-13 07:54:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:25,317 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 201 transitions. [2021-10-13 07:54:25,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 201 transitions. [2021-10-13 07:54:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:54:25,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:25,319 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:54:25,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:25,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:25,532 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:25,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:25,533 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-13 07:54:25,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:25,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879018755] [2021-10-13 07:54:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:25,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:25,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:25,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:25,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:54:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:25,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:54:25,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:25,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:54:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:25,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:25,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:25,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879018755] [2021-10-13 07:54:25,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879018755] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:25,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:25,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:54:25,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948002655] [2021-10-13 07:54:25,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:54:25,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:25,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:54:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:54:25,730 INFO L87 Difference]: Start difference. First operand 189 states and 201 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-10-13 07:54:26,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:26,150 INFO L93 Difference]: Finished difference Result 218 states and 229 transitions. [2021-10-13 07:54:26,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:54:26,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 3 [2021-10-13 07:54:26,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:26,153 INFO L225 Difference]: With dead ends: 218 [2021-10-13 07:54:26,153 INFO L226 Difference]: Without dead ends: 218 [2021-10-13 07:54:26,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:54:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-13 07:54:26,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 198. [2021-10-13 07:54:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 131 states have (on average 1.6870229007633588) internal successors, (221), 197 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-10-13 07:54:26,165 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 3 [2021-10-13 07:54:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:26,166 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-10-13 07:54:26,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-10-13 07:54:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-10-13 07:54:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:54:26,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:26,167 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:54:26,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:26,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:26,376 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:26,377 INFO L82 PathProgramCache]: Analyzing trace with hash 889446311, now seen corresponding path program 1 times [2021-10-13 07:54:26,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:26,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552333610] [2021-10-13 07:54:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:26,378 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:26,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:26,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:26,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:54:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:26,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:54:26,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:26,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:26,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:26,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552333610] [2021-10-13 07:54:26,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552333610] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:26,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:26,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:54:26,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978243512] [2021-10-13 07:54:26,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:54:26,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:26,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:54:26,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:26,531 INFO L87 Difference]: Start difference. First operand 198 states and 221 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-10-13 07:54:26,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:26,620 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2021-10-13 07:54:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:54:26,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2021-10-13 07:54:26,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:26,623 INFO L225 Difference]: With dead ends: 213 [2021-10-13 07:54:26,623 INFO L226 Difference]: Without dead ends: 213 [2021-10-13 07:54:26,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:54:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-13 07:54:26,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2021-10-13 07:54:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 130 states have (on average 1.676923076923077) internal successors, (218), 195 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 218 transitions. [2021-10-13 07:54:26,634 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 218 transitions. Word has length 6 [2021-10-13 07:54:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:26,635 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 218 transitions. [2021-10-13 07:54:26,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-10-13 07:54:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 218 transitions. [2021-10-13 07:54:26,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:54:26,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:26,636 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:26,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:26,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:26,847 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:26,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash -66894401, now seen corresponding path program 1 times [2021-10-13 07:54:26,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:26,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701894491] [2021-10-13 07:54:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:26,849 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:26,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:26,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:26,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:54:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:26,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:54:26,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:26,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:54:26,961 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 [2021-10-13 07:54:26,995 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 24 treesize of output 12 [2021-10-13 07:54:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:27,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:27,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:27,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701894491] [2021-10-13 07:54:27,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701894491] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:27,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:27,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:54:27,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112550478] [2021-10-13 07:54:27,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:27,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:27,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:27,056 INFO L87 Difference]: Start difference. First operand 196 states and 218 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:27,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:27,583 INFO L93 Difference]: Finished difference Result 195 states and 217 transitions. [2021-10-13 07:54:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:54:27,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 07:54:27,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:27,585 INFO L225 Difference]: With dead ends: 195 [2021-10-13 07:54:27,585 INFO L226 Difference]: Without dead ends: 195 [2021-10-13 07:54:27,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:54:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-13 07:54:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-10-13 07:54:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 130 states have (on average 1.6692307692307693) internal successors, (217), 194 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 217 transitions. [2021-10-13 07:54:27,594 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 217 transitions. Word has length 11 [2021-10-13 07:54:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:27,594 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 217 transitions. [2021-10-13 07:54:27,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 217 transitions. [2021-10-13 07:54:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:54:27,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:27,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:27,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:27,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:27,796 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:27,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:27,796 INFO L82 PathProgramCache]: Analyzing trace with hash -66894400, now seen corresponding path program 1 times [2021-10-13 07:54:27,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:27,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633087392] [2021-10-13 07:54:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:27,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:27,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:27,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:27,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:54:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:27,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:54:27,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:27,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:54:27,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:54:27,927 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 19 treesize of output 15 [2021-10-13 07:54:27,974 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 39 treesize of output 27 [2021-10-13 07:54:27,979 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 24 treesize of output 12 [2021-10-13 07:54:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:27,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:28,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:28,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633087392] [2021-10-13 07:54:28,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633087392] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:28,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:28,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:54:28,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662970171] [2021-10-13 07:54:28,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:54:28,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:54:28,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:54:28,215 INFO L87 Difference]: Start difference. First operand 195 states and 217 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) [2021-10-13 07:54:29,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:29,426 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2021-10-13 07:54:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:54:29,427 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 11 [2021-10-13 07:54:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:29,428 INFO L225 Difference]: With dead ends: 194 [2021-10-13 07:54:29,428 INFO L226 Difference]: Without dead ends: 194 [2021-10-13 07:54:29,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 208.4ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:54:29,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-13 07:54:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-10-13 07:54:29,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 130 states have (on average 1.6615384615384616) internal successors, (216), 193 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:29,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2021-10-13 07:54:29,436 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 11 [2021-10-13 07:54:29,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:29,436 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2021-10-13 07:54:29,436 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) [2021-10-13 07:54:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2021-10-13 07:54:29,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:54:29,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:29,438 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:29,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:29,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:29,665 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:29,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:29,665 INFO L82 PathProgramCache]: Analyzing trace with hash -129467023, now seen corresponding path program 1 times [2021-10-13 07:54:29,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:29,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903841418] [2021-10-13 07:54:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:29,667 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:29,668 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:29,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:54:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:29,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:54:29,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:29,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:54:29,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:54:29,856 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 37 treesize of output 25 [2021-10-13 07:54:29,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-13 07:54:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:29,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:29,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:29,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903841418] [2021-10-13 07:54:29,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903841418] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:29,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:29,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:54:29,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910433175] [2021-10-13 07:54:29,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:29,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:29,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:29,939 INFO L87 Difference]: Start difference. First operand 194 states and 216 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-10-13 07:54:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:30,298 INFO L93 Difference]: Finished difference Result 286 states and 313 transitions. [2021-10-13 07:54:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:54:30,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 13 [2021-10-13 07:54:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:30,300 INFO L225 Difference]: With dead ends: 286 [2021-10-13 07:54:30,300 INFO L226 Difference]: Without dead ends: 286 [2021-10-13 07:54:30,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:54:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-10-13 07:54:30,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 197. [2021-10-13 07:54:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 133 states have (on average 1.6466165413533835) internal successors, (219), 196 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 219 transitions. [2021-10-13 07:54:30,307 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 219 transitions. Word has length 13 [2021-10-13 07:54:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:30,307 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 219 transitions. [2021-10-13 07:54:30,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-10-13 07:54:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 219 transitions. [2021-10-13 07:54:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:54:30,308 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:30,308 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:30,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:30,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:30,509 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:30,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:30,509 INFO L82 PathProgramCache]: Analyzing trace with hash 13740083, now seen corresponding path program 1 times [2021-10-13 07:54:30,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:30,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645847063] [2021-10-13 07:54:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:30,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:30,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:30,511 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:30,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:54:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:30,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:54:30,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:30,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:54:30,693 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 07:54:30,693 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 22 treesize of output 29 [2021-10-13 07:54:30,755 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 26 treesize of output 22 [2021-10-13 07:54:30,938 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 07:54:30,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 32 [2021-10-13 07:54:31,060 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 07:54:31,061 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 38 [2021-10-13 07:54:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:31,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:32,568 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset)))))) (_ bv1 1)))) is different from false [2021-10-13 07:54:34,013 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse1)))))) (_ bv1 1)))) is different from false [2021-10-13 07:54:34,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:34,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:34,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645847063] [2021-10-13 07:54:34,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645847063] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:34,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:34,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 07:54:34,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195757727] [2021-10-13 07:54:34,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:54:34,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:34,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:54:34,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2021-10-13 07:54:34,154 INFO L87 Difference]: Start difference. First operand 197 states and 219 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:39,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:39,430 INFO L93 Difference]: Finished difference Result 197 states and 218 transitions. [2021-10-13 07:54:39,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:54:39,431 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 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 14 [2021-10-13 07:54:39,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:39,432 INFO L225 Difference]: With dead ends: 197 [2021-10-13 07:54:39,432 INFO L226 Difference]: Without dead ends: 197 [2021-10-13 07:54:39,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3368.6ms TimeCoverageRelationStatistics Valid=95, Invalid=217, Unknown=2, NotChecked=66, Total=380 [2021-10-13 07:54:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-13 07:54:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-10-13 07:54:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 133 states have (on average 1.6390977443609023) internal successors, (218), 195 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 218 transitions. [2021-10-13 07:54:39,438 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 218 transitions. Word has length 14 [2021-10-13 07:54:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:39,438 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 218 transitions. [2021-10-13 07:54:39,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 218 transitions. [2021-10-13 07:54:39,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:54:39,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:39,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:39,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 07:54:39,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:39,653 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:39,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:39,653 INFO L82 PathProgramCache]: Analyzing trace with hash 13740084, now seen corresponding path program 1 times [2021-10-13 07:54:39,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:39,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703578542] [2021-10-13 07:54:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:39,655 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:39,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:39,656 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:39,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:54:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:39,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:54:39,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:39,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:54:39,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:54:39,838 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:54:39,839 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 16 treesize of output 16 [2021-10-13 07:54:39,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:54:39,879 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 23 treesize of output 19 [2021-10-13 07:54:40,017 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 07:54:40,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-10-13 07:54:40,039 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-10-13 07:54:40,039 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 67 treesize of output 60 [2021-10-13 07:54:40,182 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 07:54:40,182 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 44 [2021-10-13 07:54:40,190 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 07:54:40,197 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 35 treesize of output 19 [2021-10-13 07:54:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:40,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:43,396 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 14 treesize of output 12 [2021-10-13 07:54:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:43,470 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:43,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703578542] [2021-10-13 07:54:43,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703578542] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:43,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:43,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 07:54:43,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477539234] [2021-10-13 07:54:43,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:54:43,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:43,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:54:43,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:54:43,472 INFO L87 Difference]: Start difference. First operand 196 states and 218 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:45,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:45,734 INFO L93 Difference]: Finished difference Result 196 states and 217 transitions. [2021-10-13 07:54:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:54:45,735 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 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 14 [2021-10-13 07:54:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:45,737 INFO L225 Difference]: With dead ends: 196 [2021-10-13 07:54:45,737 INFO L226 Difference]: Without dead ends: 196 [2021-10-13 07:54:45,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3357.3ms TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:54:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-13 07:54:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-10-13 07:54:45,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 133 states have (on average 1.631578947368421) internal successors, (217), 194 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 217 transitions. [2021-10-13 07:54:45,744 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 217 transitions. Word has length 14 [2021-10-13 07:54:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:45,745 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 217 transitions. [2021-10-13 07:54:45,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 217 transitions. [2021-10-13 07:54:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:54:45,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:45,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:45,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:45,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:45,959 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:45,960 INFO L82 PathProgramCache]: Analyzing trace with hash 137878486, now seen corresponding path program 1 times [2021-10-13 07:54:45,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:45,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641964649] [2021-10-13 07:54:45,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:45,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:45,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:45,962 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:45,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:54:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:46,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:54:46,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:46,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:54:46,114 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 13 treesize of output 9 [2021-10-13 07:54:46,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-10-13 07:54:46,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-13 07:54:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:46,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:46,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:46,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641964649] [2021-10-13 07:54:46,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641964649] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:46,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:46,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:54:46,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14262345] [2021-10-13 07:54:46,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:46,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:46,282 INFO L87 Difference]: Start difference. First operand 195 states and 217 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:46,670 INFO L93 Difference]: Finished difference Result 283 states and 310 transitions. [2021-10-13 07:54:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:54:46,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 07:54:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:46,672 INFO L225 Difference]: With dead ends: 283 [2021-10-13 07:54:46,672 INFO L226 Difference]: Without dead ends: 283 [2021-10-13 07:54:46,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:54:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-13 07:54:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 198. [2021-10-13 07:54:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 136 states have (on average 1.6176470588235294) internal successors, (220), 197 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 220 transitions. [2021-10-13 07:54:46,678 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 220 transitions. Word has length 15 [2021-10-13 07:54:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:46,678 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 220 transitions. [2021-10-13 07:54:46,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:46,679 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 220 transitions. [2021-10-13 07:54:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:54:46,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:46,679 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:46,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:46,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:46,880 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:46,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1553228766, now seen corresponding path program 1 times [2021-10-13 07:54:46,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:46,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128648401] [2021-10-13 07:54:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:46,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:46,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:46,887 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:46,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:54:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:47,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:54:47,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:47,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:54:47,146 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 07:54:47,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-10-13 07:54:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:47,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:47,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:47,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128648401] [2021-10-13 07:54:47,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128648401] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:47,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:47,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:54:47,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468044050] [2021-10-13 07:54:47,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:54:47,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:47,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:54:47,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:54:47,250 INFO L87 Difference]: Start difference. First operand 198 states and 220 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:47,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:47,603 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2021-10-13 07:54:47,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:54:47,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-10-13 07:54:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:47,606 INFO L225 Difference]: With dead ends: 193 [2021-10-13 07:54:47,606 INFO L226 Difference]: Without dead ends: 193 [2021-10-13 07:54:47,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:47,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-13 07:54:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2021-10-13 07:54:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 138 states have (on average 1.5217391304347827) internal successors, (210), 187 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 210 transitions. [2021-10-13 07:54:47,612 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 210 transitions. Word has length 18 [2021-10-13 07:54:47,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:47,613 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 210 transitions. [2021-10-13 07:54:47,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:47,613 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 210 transitions. [2021-10-13 07:54:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:54:47,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:47,614 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:47,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-13 07:54:47,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:47,826 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:54:47,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:47,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1553228767, now seen corresponding path program 1 times [2021-10-13 07:54:47,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:47,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091596922] [2021-10-13 07:54:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:47,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:47,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:47,828 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:47,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:54:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:47,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:54:47,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:48,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:54:48,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:54:48,276 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 07:54:48,277 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 [2021-10-13 07:54:48,295 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:54:48,295 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 25 [2021-10-13 07:54:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:48,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:51,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:51,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091596922] [2021-10-13 07:54:51,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091596922] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:51,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:51,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:54:51,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140550421] [2021-10-13 07:54:51,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:54:51,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:51,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:54:51,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-13 07:54:51,434 INFO L87 Difference]: Start difference. First operand 188 states and 210 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:03,816 INFO L93 Difference]: Finished difference Result 247 states and 262 transitions. [2021-10-13 07:55:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:55:03,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 07:55:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:03,818 INFO L225 Difference]: With dead ends: 247 [2021-10-13 07:55:03,819 INFO L226 Difference]: Without dead ends: 247 [2021-10-13 07:55:03,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12625.1ms TimeCoverageRelationStatistics Valid=51, Invalid=79, Unknown=2, NotChecked=0, Total=132 [2021-10-13 07:55:03,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-10-13 07:55:03,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 201. [2021-10-13 07:55:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 200 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 234 transitions. [2021-10-13 07:55:03,827 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 234 transitions. Word has length 18 [2021-10-13 07:55:03,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:03,827 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 234 transitions. [2021-10-13 07:55:03,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 234 transitions. [2021-10-13 07:55:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 07:55:03,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:03,828 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:03,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-13 07:55:04,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:55:04,034 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:55:04,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:04,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1995718990, now seen corresponding path program 1 times [2021-10-13 07:55:04,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:55:04,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464701540] [2021-10-13 07:55:04,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:04,035 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:55:04,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:55:04,036 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:55:04,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:55:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:04,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:55:04,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:04,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:04,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:55:04,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464701540] [2021-10-13 07:55:04,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464701540] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:04,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:04,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:55:04,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785992165] [2021-10-13 07:55:04,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:55:04,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:55:04,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:55:04,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:55:04,342 INFO L87 Difference]: Start difference. First operand 201 states and 234 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:04,695 INFO L93 Difference]: Finished difference Result 240 states and 254 transitions. [2021-10-13 07:55:04,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:55:04,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 07:55:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:04,697 INFO L225 Difference]: With dead ends: 240 [2021-10-13 07:55:04,697 INFO L226 Difference]: Without dead ends: 240 [2021-10-13 07:55:04,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:55:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-13 07:55:04,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 199. [2021-10-13 07:55:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 153 states have (on average 1.5098039215686274) internal successors, (231), 198 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 231 transitions. [2021-10-13 07:55:04,704 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 231 transitions. Word has length 20 [2021-10-13 07:55:04,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:04,704 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 231 transitions. [2021-10-13 07:55:04,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 231 transitions. [2021-10-13 07:55:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:55:04,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:04,706 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:04,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:55:04,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:55:04,917 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:55:04,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:04,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1739411639, now seen corresponding path program 1 times [2021-10-13 07:55:04,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:55:04,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610667783] [2021-10-13 07:55:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:04,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:55:04,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:55:04,919 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:55:04,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:55:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:05,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:55:05,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:05,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:55:05,210 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 20 treesize of output 16 [2021-10-13 07:55:05,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-10-13 07:55:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:05,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:05,323 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:55:05,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610667783] [2021-10-13 07:55:05,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610667783] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:05,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:05,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:55:05,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101370803] [2021-10-13 07:55:05,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:55:05,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:55:05,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:55:05,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:55:05,325 INFO L87 Difference]: Start difference. First operand 199 states and 231 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:05,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:05,850 INFO L93 Difference]: Finished difference Result 198 states and 230 transitions. [2021-10-13 07:55:05,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:55:05,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 07:55:05,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:05,852 INFO L225 Difference]: With dead ends: 198 [2021-10-13 07:55:05,852 INFO L226 Difference]: Without dead ends: 198 [2021-10-13 07:55:05,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:55:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-13 07:55:05,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-10-13 07:55:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 153 states have (on average 1.5032679738562091) internal successors, (230), 197 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 230 transitions. [2021-10-13 07:55:05,858 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 230 transitions. Word has length 21 [2021-10-13 07:55:05,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:05,858 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 230 transitions. [2021-10-13 07:55:05,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:05,859 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 230 transitions. [2021-10-13 07:55:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:55:05,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:05,860 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:05,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:55:06,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:55:06,071 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:55:06,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:06,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1739411638, now seen corresponding path program 1 times [2021-10-13 07:55:06,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:55:06,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103544765] [2021-10-13 07:55:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:06,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:55:06,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:55:06,073 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:55:06,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:55:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:06,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:55:06,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:06,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:55:06,325 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 [2021-10-13 07:55:06,332 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 [2021-10-13 07:55:06,386 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 [2021-10-13 07:55:06,391 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 [2021-10-13 07:55:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:06,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:06,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:55:06,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103544765] [2021-10-13 07:55:06,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103544765] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:06,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:06,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:55:06,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187532590] [2021-10-13 07:55:06,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:55:06,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:55:06,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:55:06,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:55:06,691 INFO L87 Difference]: Start difference. First operand 198 states and 230 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:08,169 INFO L93 Difference]: Finished difference Result 197 states and 229 transitions. [2021-10-13 07:55:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:55:08,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 07:55:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:08,170 INFO L225 Difference]: With dead ends: 197 [2021-10-13 07:55:08,170 INFO L226 Difference]: Without dead ends: 197 [2021-10-13 07:55:08,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 305.7ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:55:08,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-13 07:55:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-10-13 07:55:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 196 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 229 transitions. [2021-10-13 07:55:08,176 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 229 transitions. Word has length 21 [2021-10-13 07:55:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:08,176 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 229 transitions. [2021-10-13 07:55:08,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 229 transitions. [2021-10-13 07:55:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:55:08,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:08,178 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:08,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:55:08,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:55:08,382 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:55:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:08,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1837905153, now seen corresponding path program 1 times [2021-10-13 07:55:08,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:55:08,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055526747] [2021-10-13 07:55:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:08,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:55:08,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:55:08,386 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:55:08,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:55:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:08,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:55:08,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:08,850 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 37 treesize of output 25 [2021-10-13 07:55:08,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-13 07:55:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:08,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:09,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:55:09,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055526747] [2021-10-13 07:55:09,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055526747] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:09,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:09,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-13 07:55:09,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656607007] [2021-10-13 07:55:09,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:55:09,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:55:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:55:09,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:55:09,085 INFO L87 Difference]: Start difference. First operand 197 states and 229 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:10,040 INFO L93 Difference]: Finished difference Result 291 states and 340 transitions. [2021-10-13 07:55:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:55:10,040 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 07:55:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:10,042 INFO L225 Difference]: With dead ends: 291 [2021-10-13 07:55:10,042 INFO L226 Difference]: Without dead ends: 291 [2021-10-13 07:55:10,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 504.3ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:55:10,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-13 07:55:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 192. [2021-10-13 07:55:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 149 states have (on average 1.5033557046979866) internal successors, (224), 191 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 224 transitions. [2021-10-13 07:55:10,048 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 224 transitions. Word has length 22 [2021-10-13 07:55:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:10,048 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 224 transitions. [2021-10-13 07:55:10,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 224 transitions. [2021-10-13 07:55:10,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:55:10,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:10,050 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:10,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:55:10,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:55:10,258 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:55:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash -980737588, now seen corresponding path program 1 times [2021-10-13 07:55:10,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:55:10,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119621553] [2021-10-13 07:55:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:10,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:55:10,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:55:10,261 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:55:10,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:55:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:10,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:55:10,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:10,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:55:10,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:55:10,609 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:55:10,610 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 15 treesize of output 15 [2021-10-13 07:55:10,653 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 21 treesize of output 17 [2021-10-13 07:55:10,667 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 [2021-10-13 07:55:10,832 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-13 07:55:10,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-10-13 07:55:10,858 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-13 07:55:10,858 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 59 treesize of output 54 [2021-10-13 07:55:11,014 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 07:55:11,014 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-10-13 07:55:11,026 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 07:55:11,026 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-10-13 07:55:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:11,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:13,371 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem13.offset| (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem13.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13.base|) .cse0 c_ULTIMATE.start_main_~end~0.offset)) c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13.base|) .cse0 c_ULTIMATE.start_main_~end~0.base)) c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))))) (forall ((|ULTIMATE.start_main_#t~mem13.offset| (_ BitVec 32))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem13.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem13.offset|) c_ULTIMATE.start_main_~end~0.offset)) c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (bvule .cse1 (bvadd (_ bv4 32) .cse1))))) is different from false [2021-10-13 07:55:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:20,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:55:20,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119621553] [2021-10-13 07:55:20,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119621553] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:20,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:20,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-13 07:55:20,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057830744] [2021-10-13 07:55:20,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 07:55:20,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:55:20,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 07:55:20,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=171, Unknown=2, NotChecked=26, Total=240 [2021-10-13 07:55:20,867 INFO L87 Difference]: Start difference. First operand 192 states and 224 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:24,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:24,600 INFO L93 Difference]: Finished difference Result 195 states and 227 transitions. [2021-10-13 07:55:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 07:55:24,601 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 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 25 [2021-10-13 07:55:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:24,602 INFO L225 Difference]: With dead ends: 195 [2021-10-13 07:55:24,602 INFO L226 Difference]: Without dead ends: 195 [2021-10-13 07:55:24,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 10536.0ms TimeCoverageRelationStatistics Valid=274, Invalid=784, Unknown=2, NotChecked=62, Total=1122 [2021-10-13 07:55:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-13 07:55:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 185. [2021-10-13 07:55:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 149 states have (on average 1.4563758389261745) internal successors, (217), 184 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2021-10-13 07:55:24,608 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 25 [2021-10-13 07:55:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:24,608 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2021-10-13 07:55:24,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2021-10-13 07:55:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:55:24,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:24,610 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:24,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:55:24,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:55:24,822 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:55:24,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:24,822 INFO L82 PathProgramCache]: Analyzing trace with hash -980737589, now seen corresponding path program 1 times [2021-10-13 07:55:24,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:55:24,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790782624] [2021-10-13 07:55:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:24,823 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:55:24,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:55:24,824 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:55:24,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:55:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:25,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:55:25,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:25,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:55:25,207 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 07:55:25,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-13 07:55:25,275 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 24 treesize of output 20 [2021-10-13 07:55:25,472 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-13 07:55:25,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 34 [2021-10-13 07:55:25,614 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 07:55:25,615 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 46 [2021-10-13 07:55:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:25,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:32,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:55:32,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790782624] [2021-10-13 07:55:32,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790782624] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:32,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:32,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-13 07:55:32,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057435995] [2021-10-13 07:55:32,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:55:32,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:55:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:55:32,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2021-10-13 07:55:32,005 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:35,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:35,663 INFO L93 Difference]: Finished difference Result 222 states and 256 transitions. [2021-10-13 07:55:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:55:35,663 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:55:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:35,665 INFO L225 Difference]: With dead ends: 222 [2021-10-13 07:55:35,665 INFO L226 Difference]: Without dead ends: 222 [2021-10-13 07:55:35,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 6776.9ms TimeCoverageRelationStatistics Valid=142, Invalid=363, Unknown=1, NotChecked=0, Total=506 [2021-10-13 07:55:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-13 07:55:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 184. [2021-10-13 07:55:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 149 states have (on average 1.4496644295302012) internal successors, (216), 183 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 216 transitions. [2021-10-13 07:55:35,670 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 216 transitions. Word has length 25 [2021-10-13 07:55:35,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:35,670 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 216 transitions. [2021-10-13 07:55:35,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:35,670 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 216 transitions. [2021-10-13 07:55:35,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 07:55:35,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:35,672 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:35,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:55:35,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:55:35,883 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:55:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:35,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1390694178, now seen corresponding path program 1 times [2021-10-13 07:55:35,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:55:35,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647309044] [2021-10-13 07:55:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:35,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:55:35,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:55:35,885 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:55:35,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:55:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:36,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:55:36,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:36,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:36,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:55:36,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647309044] [2021-10-13 07:55:36,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647309044] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:36,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:36,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:55:36,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670569544] [2021-10-13 07:55:36,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:55:36,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:55:36,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:55:36,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:55:36,237 INFO L87 Difference]: Start difference. First operand 184 states and 216 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:36,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:36,268 INFO L93 Difference]: Finished difference Result 295 states and 355 transitions. [2021-10-13 07:55:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:55:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 26 [2021-10-13 07:55:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:36,270 INFO L225 Difference]: With dead ends: 295 [2021-10-13 07:55:36,270 INFO L226 Difference]: Without dead ends: 295 [2021-10-13 07:55:36,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:55:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-13 07:55:36,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 212. [2021-10-13 07:55:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 177 states have (on average 1.502824858757062) internal successors, (266), 211 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 266 transitions. [2021-10-13 07:55:36,276 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 266 transitions. Word has length 26 [2021-10-13 07:55:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:36,276 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 266 transitions. [2021-10-13 07:55:36,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 266 transitions. [2021-10-13 07:55:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 07:55:36,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:36,278 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:36,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:55:36,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:55:36,489 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:55:36,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:36,489 INFO L82 PathProgramCache]: Analyzing trace with hash -161857923, now seen corresponding path program 1 times [2021-10-13 07:55:36,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:55:36,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463785291] [2021-10-13 07:55:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:36,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:55:36,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:55:36,490 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:55:36,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:55:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:36,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:55:36,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:36,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:55:36,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:55:36,962 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 37 treesize of output 25 [2021-10-13 07:55:36,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-13 07:55:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:37,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:37,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:55:37,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463785291] [2021-10-13 07:55:37,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463785291] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:37,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:37,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:55:37,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697483037] [2021-10-13 07:55:37,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:55:37,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:55:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:55:37,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:55:37,229 INFO L87 Difference]: Start difference. First operand 212 states and 266 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:37,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:37,949 INFO L93 Difference]: Finished difference Result 329 states and 401 transitions. [2021-10-13 07:55:37,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:55:37,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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 27 [2021-10-13 07:55:37,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:37,952 INFO L225 Difference]: With dead ends: 329 [2021-10-13 07:55:37,952 INFO L226 Difference]: Without dead ends: 329 [2021-10-13 07:55:37,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 179.9ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:55:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-10-13 07:55:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 225. [2021-10-13 07:55:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 190 states have (on average 1.4736842105263157) internal successors, (280), 224 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 280 transitions. [2021-10-13 07:55:37,960 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 280 transitions. Word has length 27 [2021-10-13 07:55:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:37,960 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 280 transitions. [2021-10-13 07:55:37,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 280 transitions. [2021-10-13 07:55:37,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 07:55:37,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:37,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:37,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-13 07:55:38,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:55:38,174 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:55:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:38,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1890982389, now seen corresponding path program 1 times [2021-10-13 07:55:38,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:55:38,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189797671] [2021-10-13 07:55:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:38,175 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:55:38,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:55:38,176 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:55:38,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:55:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:38,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:55:38,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:38,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:55:38,626 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:55:38,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-10-13 07:55:38,657 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 20 treesize of output 16 [2021-10-13 07:55:38,760 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-13 07:55:38,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2021-10-13 07:55:38,840 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 07:55:38,840 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 18 [2021-10-13 07:55:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:38,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:50,736 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem13.offset| (_ BitVec 32))) (not (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem13.offset|) c_ULTIMATE.start_main_~end~0.base))) c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset) (_ bv0 32)))) is different from false [2021-10-13 07:55:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:50,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:55:50,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189797671] [2021-10-13 07:55:50,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189797671] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:50,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:50,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 14 [2021-10-13 07:55:50,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954584060] [2021-10-13 07:55:50,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:55:50,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:55:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:55:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=122, Unknown=5, NotChecked=22, Total=182 [2021-10-13 07:55:50,837 INFO L87 Difference]: Start difference. First operand 225 states and 280 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:11,735 WARN L207 SmtUtils]: Spent 6.45 s on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2021-10-13 07:56:18,117 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (and (not (= .cse0 (_ bv0 32))) (not (= c_ULTIMATE.start_main_~end~0.base (_ bv0 32))) (forall ((|ULTIMATE.start_main_#t~mem13.offset| (_ BitVec 32))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem13.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem13.offset|) c_ULTIMATE.start_main_~end~0.base)) c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset) (_ bv0 32)))) (not (= .cse0 c_ULTIMATE.start_main_~end~0.base)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~end~0.base))) (_ bv1 1))) (exists ((|ULTIMATE.start_main_#t~mem13.offset| (_ BitVec 32))) (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset)) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem13.offset|)) c_ULTIMATE.start_main_~end~0.base)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (_ bv1 1))))) is different from false [2021-10-13 07:56:28,570 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2021-10-13 07:56:51,584 WARN L207 SmtUtils]: Spent 20.88 s on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-10-13 07:56:53,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:56:53,620 INFO L93 Difference]: Finished difference Result 353 states and 448 transitions. [2021-10-13 07:56:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 07:56:53,622 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 07:56:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:56:53,625 INFO L225 Difference]: With dead ends: 353 [2021-10-13 07:56:53,625 INFO L226 Difference]: Without dead ends: 353 [2021-10-13 07:56:53,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 66414.5ms TimeCoverageRelationStatistics Valid=274, Invalid=917, Unknown=7, NotChecked=134, Total=1332 [2021-10-13 07:56:53,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-10-13 07:56:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 221. [2021-10-13 07:56:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 188 states have (on average 1.4680851063829787) internal successors, (276), 220 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 276 transitions. [2021-10-13 07:56:53,635 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 276 transitions. Word has length 27 [2021-10-13 07:56:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:56:53,635 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 276 transitions. [2021-10-13 07:56:53,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 276 transitions. [2021-10-13 07:56:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 07:56:53,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:56:53,637 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:56:53,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-13 07:56:53,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:56:53,866 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:56:53,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:56:53,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1808788358, now seen corresponding path program 1 times [2021-10-13 07:56:53,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:56:53,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056758459] [2021-10-13 07:56:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:53,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:56:53,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:56:53,869 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:56:53,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 07:56:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:54,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:56:54,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:54,347 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 [2021-10-13 07:56:54,356 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 [2021-10-13 07:56:54,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:54,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 07:56:54,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:54,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 07:56:54,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:54,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:54,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:54,589 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:56:54,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-13 07:56:54,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:54,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:54,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:54,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-10-13 07:56:55,433 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:56:55,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 41 [2021-10-13 07:56:55,449 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:56:55,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 16 [2021-10-13 07:56:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:55,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:55,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:56:55,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056758459] [2021-10-13 07:56:55,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056758459] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:56:55,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1945198700] [2021-10-13 07:56:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:55,891 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:56:55,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:56:55,896 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:56:55,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-13 07:56:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:56,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:56:56,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:56,419 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 [2021-10-13 07:56:56,427 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 [2021-10-13 07:56:56,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:56,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 07:56:56,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:56,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 07:56:56,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:56,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:56,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:56,599 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:56:56,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-13 07:56:56,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:56,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:56,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:56,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-10-13 07:56:57,488 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:56:57,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 41 [2021-10-13 07:56:57,493 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:56:57,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 16 [2021-10-13 07:56:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:57,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:57,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1945198700] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:56:57,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062301317] [2021-10-13 07:56:57,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:57,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:56:57,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:56:57,836 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:56:57,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 07:56:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:58,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 07:56:58,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:58,329 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 [2021-10-13 07:56:58,337 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 [2021-10-13 07:56:58,367 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-13 07:56:58,367 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 [2021-10-13 07:56:58,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:58,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 07:56:58,559 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-10-13 07:56:58,560 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 30 treesize of output 32 [2021-10-13 07:56:58,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:58,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:58,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:56:58,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-10-13 07:56:59,454 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-13 07:56:59,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 45 [2021-10-13 07:56:59,464 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-13 07:56:59,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 16 [2021-10-13 07:56:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:59,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:59,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062301317] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:56:59,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:56:59,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 9, 6, 8, 6] total 14 [2021-10-13 07:56:59,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377794875] [2021-10-13 07:56:59,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:56:59,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:56:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:56:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:56:59,893 INFO L87 Difference]: Start difference. First operand 221 states and 276 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 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) [2021-10-13 07:57:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:57:01,948 INFO L93 Difference]: Finished difference Result 360 states and 422 transitions. [2021-10-13 07:57:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:57:01,949 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 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) Word has length 30 [2021-10-13 07:57:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:57:01,952 INFO L225 Difference]: With dead ends: 360 [2021-10-13 07:57:01,952 INFO L226 Difference]: Without dead ends: 360 [2021-10-13 07:57:01,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 156 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 895.4ms TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:57:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-13 07:57:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 259. [2021-10-13 07:57:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 226 states have (on average 1.4955752212389382) internal successors, (338), 258 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:57:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 338 transitions. [2021-10-13 07:57:01,961 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 338 transitions. Word has length 30 [2021-10-13 07:57:01,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:57:01,962 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 338 transitions. [2021-10-13 07:57:01,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 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) [2021-10-13 07:57:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 338 transitions. [2021-10-13 07:57:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:57:01,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:57:01,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:57:01,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:57:02,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 07:57:02,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-13 07:57:02,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:57:02,567 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:57:02,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:57:02,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1227612287, now seen corresponding path program 1 times [2021-10-13 07:57:02,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:57:02,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721257821] [2021-10-13 07:57:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:57:02,568 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:57:02,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:57:02,570 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:57:02,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:57:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:57:03,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:57:03,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:57:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:57:03,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:57:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:57:03,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:57:03,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721257821] [2021-10-13 07:57:03,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721257821] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:57:03,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:57:03,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:57:03,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531203262] [2021-10-13 07:57:03,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:57:03,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:57:03,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:57:03,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:57:03,254 INFO L87 Difference]: Start difference. First operand 259 states and 338 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:57:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:57:03,299 INFO L93 Difference]: Finished difference Result 257 states and 331 transitions. [2021-10-13 07:57:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:57:03,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 07:57:03,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:57:03,301 INFO L225 Difference]: With dead ends: 257 [2021-10-13 07:57:03,301 INFO L226 Difference]: Without dead ends: 257 [2021-10-13 07:57:03,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:57:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-10-13 07:57:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-10-13 07:57:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 225 states have (on average 1.471111111111111) internal successors, (331), 256 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:57:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 331 transitions. [2021-10-13 07:57:03,309 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 331 transitions. Word has length 32 [2021-10-13 07:57:03,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:57:03,310 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 331 transitions. [2021-10-13 07:57:03,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:57:03,310 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 331 transitions. [2021-10-13 07:57:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:57:03,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:57:03,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:57:03,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-13 07:57:03,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:57:03,528 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:57:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:57:03,528 INFO L82 PathProgramCache]: Analyzing trace with hash 598729103, now seen corresponding path program 1 times [2021-10-13 07:57:03,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:57:03,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506034714] [2021-10-13 07:57:03,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:57:03,529 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:57:03,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:57:03,530 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:57:03,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 07:57:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:57:04,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 07:57:04,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:57:04,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:57:04,143 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 07:57:04,143 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 [2021-10-13 07:57:04,229 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 26 treesize of output 22 [2021-10-13 07:57:04,459 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 07:57:04,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 32 [2021-10-13 07:57:04,725 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-13 07:57:04,726 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 64 treesize of output 45 [2021-10-13 07:57:09,446 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-10-13 07:57:09,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 47 [2021-10-13 07:57:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:57:09,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:57:15,669 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv8 32) |ULTIMATE.start_main_#t~mem7.offset|) (_ bv0 32))))) c_ULTIMATE.start_main_~list~0.base) .cse2)))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:57:17,695 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv8 32) |ULTIMATE.start_main_#t~mem7.offset|) (_ bv0 32))))) c_ULTIMATE.start_main_~list~0.base) .cse2))))))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:57:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:57:18,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:57:18,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506034714] [2021-10-13 07:57:18,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506034714] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:57:18,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:57:18,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 21 [2021-10-13 07:57:18,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035420654] [2021-10-13 07:57:18,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 07:57:18,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:57:18,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 07:57:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=307, Unknown=4, NotChecked=74, Total=462 [2021-10-13 07:57:18,480 INFO L87 Difference]: Start difference. First operand 257 states and 331 transitions. Second operand has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 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) [2021-10-13 07:57:48,154 WARN L207 SmtUtils]: Spent 10.48 s on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2021-10-13 07:58:13,453 WARN L207 SmtUtils]: Spent 14.37 s on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-10-13 07:58:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:18,994 INFO L93 Difference]: Finished difference Result 316 states and 373 transitions. [2021-10-13 07:58:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 07:58:18,995 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 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) Word has length 33 [2021-10-13 07:58:18,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:18,996 INFO L225 Difference]: With dead ends: 316 [2021-10-13 07:58:18,996 INFO L226 Difference]: Without dead ends: 316 [2021-10-13 07:58:18,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 48681.9ms TimeCoverageRelationStatistics Valid=233, Invalid=824, Unknown=7, NotChecked=126, Total=1190 [2021-10-13 07:58:18,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-13 07:58:19,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 258. [2021-10-13 07:58:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 228 states have (on average 1.4166666666666667) internal successors, (323), 257 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:19,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2021-10-13 07:58:19,004 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 33 [2021-10-13 07:58:19,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:19,005 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2021-10-13 07:58:19,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 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) [2021-10-13 07:58:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2021-10-13 07:58:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:58:19,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:19,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:19,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:19,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:58:19,221 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:58:19,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:19,221 INFO L82 PathProgramCache]: Analyzing trace with hash 598729104, now seen corresponding path program 1 times [2021-10-13 07:58:19,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:58:19,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581345391] [2021-10-13 07:58:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:19,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:58:19,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:58:19,222 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:58:19,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 07:58:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:19,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 07:58:19,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:19,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:58:19,921 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:58:19,921 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 16 treesize of output 16 [2021-10-13 07:58:19,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:58:19,962 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 23 treesize of output 19 [2021-10-13 07:58:19,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:58:20,122 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 07:58:20,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-10-13 07:58:20,147 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-10-13 07:58:20,147 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 67 treesize of output 60 [2021-10-13 07:58:20,424 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-13 07:58:20,424 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 107 treesize of output 70 [2021-10-13 07:58:20,490 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-10-13 07:58:20,491 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 97 treesize of output 93 [2021-10-13 07:58:25,228 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-10-13 07:58:25,228 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 46 [2021-10-13 07:58:25,237 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-10-13 07:58:25,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 19 [2021-10-13 07:58:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:25,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:36,245 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse2 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse2)) (.cse1 (bvadd (_ bv8 32) |ULTIMATE.start_main_#t~mem7.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse2)))))) (forall ((|ULTIMATE.start_main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse3 (let ((.cse5 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse5))) (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) (bvadd (_ bv8 32) |ULTIMATE.start_main_#t~mem7.offset|) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse5)))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32)))))) is different from false [2021-10-13 07:58:38,352 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse3))) (store .cse1 .cse2 (store (select .cse1 .cse2) (bvadd (_ bv8 32) |ULTIMATE.start_main_#t~mem7.offset|) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse3)))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse7 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse5 (select (select .cse8 c_ULTIMATE.start_main_~list~0.base) .cse7)) (.cse6 (bvadd (_ bv8 32) |ULTIMATE.start_main_#t~mem7.offset|))) (bvule (bvadd (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))))) (store .cse4 .cse5 (store (select .cse4 .cse5) .cse6 (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse7) (_ bv12 32)) (select |c_#length| (select (select (store .cse8 .cse5 (store (select .cse8 .cse5) .cse6 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse7))))))) is different from false [2021-10-13 07:58:40,466 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse0 (let ((.cse4 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse4))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse2 (select (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse4))) (store .cse1 .cse2 (store (select .cse1 .cse2) (bvadd (_ bv8 32) |ULTIMATE.start_main_#t~mem7.offset|) (_ bv0 32))))) c_ULTIMATE.start_main_~list~0.base) .cse4)))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse9 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse8 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse9))) (let ((.cse10 (store |c_#memory_$Pointer$.base| .cse8 (store (select |c_#memory_$Pointer$.base| .cse8) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))))) (let ((.cse6 (select (select .cse10 c_ULTIMATE.start_main_~list~0.base) .cse9)) (.cse7 (bvadd (_ bv8 32) |ULTIMATE.start_main_#t~mem7.offset|))) (bvule (bvadd (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| .cse8 (store (select |c_#memory_$Pointer$.offset| .cse8) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))))) (store .cse5 .cse6 (store (select .cse5 .cse6) .cse7 (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse9) (_ bv12 32)) (select |c_#length| (select (select (store .cse10 .cse6 (store (select .cse10 .cse6) .cse7 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse9))))))))) is different from false [2021-10-13 07:58:45,467 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 14 treesize of output 12 [2021-10-13 07:58:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:45,591 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:58:45,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581345391] [2021-10-13 07:58:45,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581345391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:45,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:45,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 21 [2021-10-13 07:58:45,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048221258] [2021-10-13 07:58:45,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 07:58:45,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:58:45,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 07:58:45,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=289, Unknown=6, NotChecked=108, Total=462 [2021-10-13 07:58:45,594 INFO L87 Difference]: Start difference. First operand 258 states and 323 transitions. Second operand has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 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) [2021-10-13 07:59:50,248 WARN L207 SmtUtils]: Spent 22.90 s on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2021-10-13 07:59:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:59:57,298 INFO L93 Difference]: Finished difference Result 405 states and 460 transitions. [2021-10-13 07:59:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 07:59:57,299 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 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) Word has length 33 [2021-10-13 07:59:57,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:59:57,301 INFO L225 Difference]: With dead ends: 405 [2021-10-13 07:59:57,301 INFO L226 Difference]: Without dead ends: 405 [2021-10-13 07:59:57,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 76047.2ms TimeCoverageRelationStatistics Valid=299, Invalid=1260, Unknown=13, NotChecked=234, Total=1806 [2021-10-13 07:59:57,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-10-13 07:59:57,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 260. [2021-10-13 07:59:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 231 states have (on average 1.3852813852813852) internal successors, (320), 259 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:59:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 320 transitions. [2021-10-13 07:59:57,310 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 320 transitions. Word has length 33 [2021-10-13 07:59:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:59:57,310 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 320 transitions. [2021-10-13 07:59:57,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 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) [2021-10-13 07:59:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 320 transitions. [2021-10-13 07:59:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 07:59:57,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:59:57,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:59:57,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:59:57,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:59:57,522 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:59:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:59:57,523 INFO L82 PathProgramCache]: Analyzing trace with hash -5834576, now seen corresponding path program 1 times [2021-10-13 07:59:57,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:59:57,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710744471] [2021-10-13 07:59:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:59:57,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:59:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:59:57,524 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:59:57,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 07:59:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:59:58,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:59:58,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:59:58,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:59:58,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-13 07:59:58,202 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 24 treesize of output 12 [2021-10-13 07:59:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:59:58,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:59:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:59:58,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:59:58,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710744471] [2021-10-13 07:59:58,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710744471] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:59:58,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:59:58,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:59:58,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44124463] [2021-10-13 07:59:58,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:59:58,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:59:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:59:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:59:58,303 INFO L87 Difference]: Start difference. First operand 260 states and 320 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:59:59,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:59:59,009 INFO L93 Difference]: Finished difference Result 259 states and 319 transitions. [2021-10-13 07:59:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:59:59,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2021-10-13 07:59:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:59:59,011 INFO L225 Difference]: With dead ends: 259 [2021-10-13 07:59:59,012 INFO L226 Difference]: Without dead ends: 259 [2021-10-13 07:59:59,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 80.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:59:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-10-13 07:59:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2021-10-13 07:59:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 231 states have (on average 1.380952380952381) internal successors, (319), 258 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:59:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 319 transitions. [2021-10-13 07:59:59,019 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 319 transitions. Word has length 34 [2021-10-13 07:59:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:59:59,020 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 319 transitions. [2021-10-13 07:59:59,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:59:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 319 transitions. [2021-10-13 07:59:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 07:59:59,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:59:59,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:59:59,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:59:59,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:59:59,226 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 07:59:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:59:59,227 INFO L82 PathProgramCache]: Analyzing trace with hash -5834575, now seen corresponding path program 1 times [2021-10-13 07:59:59,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:59:59,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321710691] [2021-10-13 07:59:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:59:59,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:59:59,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:59:59,230 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:59:59,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 07:59:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:59:59,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:59:59,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:59:59,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:59:59,911 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 19 treesize of output 15 [2021-10-13 07:59:59,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:59:59,977 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 39 treesize of output 27 [2021-10-13 07:59:59,985 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 24 treesize of output 12 [2021-10-13 08:00:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:00,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:00,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:00,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321710691] [2021-10-13 08:00:00,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321710691] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:00,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:00,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 08:00:00,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215926645] [2021-10-13 08:00:00,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:00:00,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:00,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:00:00,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:00:00,337 INFO L87 Difference]: Start difference. First operand 259 states and 319 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:01,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:01,906 INFO L93 Difference]: Finished difference Result 258 states and 318 transitions. [2021-10-13 08:00:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:00:01,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 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 34 [2021-10-13 08:00:01,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:01,910 INFO L225 Difference]: With dead ends: 258 [2021-10-13 08:00:01,910 INFO L226 Difference]: Without dead ends: 258 [2021-10-13 08:00:01,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 313.4ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:00:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-13 08:00:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-10-13 08:00:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 231 states have (on average 1.3766233766233766) internal successors, (318), 257 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 318 transitions. [2021-10-13 08:00:01,917 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 318 transitions. Word has length 34 [2021-10-13 08:00:01,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:01,917 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 318 transitions. [2021-10-13 08:00:01,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:01,918 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 318 transitions. [2021-10-13 08:00:01,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 08:00:01,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:01,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:00:01,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:02,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:02,135 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 08:00:02,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:02,135 INFO L82 PathProgramCache]: Analyzing trace with hash -146941713, now seen corresponding path program 1 times [2021-10-13 08:00:02,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:02,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290714562] [2021-10-13 08:00:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:02,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:02,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:02,137 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:02,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 08:00:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:02,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 08:00:02,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:02,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 08:00:02,949 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:00:02,949 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 16 treesize of output 16 [2021-10-13 08:00:03,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 08:00:03,020 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 18 treesize of output 14 [2021-10-13 08:00:03,206 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 08:00:03,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 44 [2021-10-13 08:00:03,241 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-10-13 08:00:03,241 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 56 treesize of output 49 [2021-10-13 08:00:03,589 INFO L354 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2021-10-13 08:00:03,590 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 108 treesize of output 77 [2021-10-13 08:00:03,645 INFO L354 Elim1Store]: treesize reduction 84, result has 21.5 percent of original size [2021-10-13 08:00:03,645 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 98 treesize of output 85 [2021-10-13 08:00:04,755 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-10-13 08:00:04,756 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 72 treesize of output 44 [2021-10-13 08:00:04,780 INFO L354 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2021-10-13 08:00:04,781 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 35 treesize of output 25 [2021-10-13 08:00:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:04,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:39,386 INFO L354 Elim1Store]: treesize reduction 594, result has 49.4 percent of original size [2021-10-13 08:00:39,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 8689 treesize of output 8121 [2021-10-13 08:00:42,194 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-10-13 08:00:42,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33261 treesize of output 1 [2021-10-13 08:00:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:42,794 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:42,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290714562] [2021-10-13 08:00:42,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290714562] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:42,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:42,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-10-13 08:00:42,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845923406] [2021-10-13 08:00:42,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 08:00:42,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:42,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 08:00:42,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=423, Unknown=10, NotChecked=0, Total=506 [2021-10-13 08:00:42,796 INFO L87 Difference]: Start difference. First operand 258 states and 318 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:49,546 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse1 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse3 (select (select .cse2 c_ULTIMATE.start_main_~list~0.base) .cse1)) (.cse4 (bvadd (_ bv8 32) (select (select .cse5 c_ULTIMATE.start_main_~list~0.base) .cse1)))) (select (let ((.cse0 (store .cse2 .cse3 (store (select .cse2 .cse3) .cse4 (_ bv0 32))))) (select .cse0 (select (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse1))) (bvadd (_ bv8 32) (select (select (store .cse5 .cse3 (store (select .cse5 .cse3) .cse4 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse1))))) (_ bv0 32))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (let ((.cse7 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse12 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse7))) (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse12 (store (select |c_#memory_$Pointer$.offset| .cse12) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse8 (store |c_#memory_$Pointer$.base| .cse12 (store (select |c_#memory_$Pointer$.base| .cse12) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))))) (let ((.cse9 (select (select .cse8 c_ULTIMATE.start_main_~list~0.base) .cse7)) (.cse10 (bvadd (_ bv8 32) (select (select .cse11 c_ULTIMATE.start_main_~list~0.base) .cse7)))) (select (let ((.cse6 (store .cse8 .cse9 (store (select .cse8 .cse9) .cse10 (_ bv0 32))))) (select .cse6 (select (select .cse6 c_ULTIMATE.start_main_~list~0.base) .cse7))) (bvadd (_ bv8 32) (select (select (store .cse11 .cse9 (store (select .cse11 .cse9) .cse10 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse7))))))) (_ bv0 32))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (let ((.cse18 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse14 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse17 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse15 (select (select .cse14 c_ULTIMATE.start_main_~list~0.base) .cse17)) (.cse16 (bvadd (_ bv8 32) (select (select .cse18 c_ULTIMATE.start_main_~list~0.base) .cse17)))) (let ((.cse13 (store .cse18 .cse15 (store (select .cse18 .cse15) .cse16 (_ bv0 32))))) (select (select .cse13 (select (select (store .cse14 .cse15 (store (select .cse14 .cse15) .cse16 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse17)) (bvadd (_ bv8 32) (select (select .cse13 c_ULTIMATE.start_main_~list~0.base) .cse17)))))) (_ bv0 32))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (_ bv0 32) (let ((.cse23 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse25 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse23))) (let ((.cse24 (store |c_#memory_$Pointer$.offset| .cse25 (store (select |c_#memory_$Pointer$.offset| .cse25) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse20 (store |c_#memory_$Pointer$.base| .cse25 (store (select |c_#memory_$Pointer$.base| .cse25) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))))) (let ((.cse21 (select (select .cse20 c_ULTIMATE.start_main_~list~0.base) .cse23)) (.cse22 (bvadd (_ bv8 32) (select (select .cse24 c_ULTIMATE.start_main_~list~0.base) .cse23)))) (let ((.cse19 (store .cse24 .cse21 (store (select .cse24 .cse21) .cse22 (_ bv0 32))))) (select (select .cse19 (select (select (store .cse20 .cse21 (store (select .cse20 .cse21) .cse22 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse23)) (bvadd (_ bv8 32) (select (select .cse19 c_ULTIMATE.start_main_~list~0.base) .cse23)))))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (_ bv1 1)))) is different from true [2021-10-13 08:01:25,426 WARN L207 SmtUtils]: Spent 10.16 s on a formula simplification that was a NOOP. DAG size: 90 [2021-10-13 08:01:36,840 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse15 (= c_ULTIMATE.start_main_~list~0.base (_ bv0 32)))) (and (exists ((ULTIMATE.start_main_~end~0.base (_ BitVec 32))) (let ((.cse1 (select (select |c_#memory_$Pointer$.offset| ULTIMATE.start_main_~end~0.base) (_ bv8 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~end~0.base) (_ bv8 32)))) (and (= (select (select |c_#memory_$Pointer$.base| .cse0) (_ bv8 32)) (_ bv0 32)) (= .cse1 c_ULTIMATE.start_main_~inner~0.offset) (= .cse0 c_ULTIMATE.start_main_~inner~0.base) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| .cse0) (_ bv8 32))) (= .cse1 (_ bv0 32)) (not (= .cse0 ULTIMATE.start_main_~end~0.base))))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse3 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse5 (select (select .cse4 c_ULTIMATE.start_main_~list~0.base) .cse3)) (.cse6 (bvadd (_ bv8 32) (select (select .cse7 c_ULTIMATE.start_main_~list~0.base) .cse3)))) (select (let ((.cse2 (store .cse4 .cse5 (store (select .cse4 .cse5) .cse6 (_ bv0 32))))) (select .cse2 (select (select .cse2 c_ULTIMATE.start_main_~list~0.base) .cse3))) (bvadd (_ bv8 32) (select (select (store .cse7 .cse5 (store (select .cse7 .cse5) .cse6 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse3))))) (_ bv0 32))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (let ((.cse9 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse14 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse9))) (let ((.cse13 (store |c_#memory_$Pointer$.offset| .cse14 (store (select |c_#memory_$Pointer$.offset| .cse14) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse10 (store |c_#memory_$Pointer$.base| .cse14 (store (select |c_#memory_$Pointer$.base| .cse14) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))))) (let ((.cse11 (select (select .cse10 c_ULTIMATE.start_main_~list~0.base) .cse9)) (.cse12 (bvadd (_ bv8 32) (select (select .cse13 c_ULTIMATE.start_main_~list~0.base) .cse9)))) (select (let ((.cse8 (store .cse10 .cse11 (store (select .cse10 .cse11) .cse12 (_ bv0 32))))) (select .cse8 (select (select .cse8 c_ULTIMATE.start_main_~list~0.base) .cse9))) (bvadd (_ bv8 32) (select (select (store .cse13 .cse11 (store (select .cse13 .cse11) .cse12 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse9))))))) (_ bv0 32))) (or .cse15 (not (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32))) (not (= (_ bv0 1) (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (let ((.cse21 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse17 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse20 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse18 (select (select .cse17 c_ULTIMATE.start_main_~list~0.base) .cse20)) (.cse19 (bvadd (_ bv8 32) (select (select .cse21 c_ULTIMATE.start_main_~list~0.base) .cse20)))) (let ((.cse16 (store .cse21 .cse18 (store (select .cse21 .cse18) .cse19 (_ bv0 32))))) (select (select .cse16 (select (select (store .cse17 .cse18 (store (select .cse17 .cse18) .cse19 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse20)) (bvadd (_ bv8 32) (select (select .cse16 c_ULTIMATE.start_main_~list~0.base) .cse20)))))) (_ bv0 32))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (_ bv0 32) (let ((.cse26 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse28 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse26))) (let ((.cse27 (store |c_#memory_$Pointer$.offset| .cse28 (store (select |c_#memory_$Pointer$.offset| .cse28) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32)))) (.cse23 (store |c_#memory_$Pointer$.base| .cse28 (store (select |c_#memory_$Pointer$.base| .cse28) |ULTIMATE.start_main_#t~mem6.offset| (_ bv0 32))))) (let ((.cse24 (select (select .cse23 c_ULTIMATE.start_main_~list~0.base) .cse26)) (.cse25 (bvadd (_ bv8 32) (select (select .cse27 c_ULTIMATE.start_main_~list~0.base) .cse26)))) (let ((.cse22 (store .cse27 .cse24 (store (select .cse27 .cse24) .cse25 (_ bv0 32))))) (select (select .cse22 (select (select (store .cse23 .cse24 (store (select .cse23 .cse24) .cse25 (_ bv0 32))) c_ULTIMATE.start_main_~list~0.base) .cse26)) (bvadd (_ bv8 32) (select (select .cse22 c_ULTIMATE.start_main_~list~0.base) .cse26)))))))))) (or (not (= |c_ULTIMATE.start_main_#t~malloc5.offset| c_ULTIMATE.start_main_~list~0.offset)) (not (= c_ULTIMATE.start_main_~list~0.base |c_ULTIMATE.start_main_#t~malloc5.base|)) (and (= |c_ULTIMATE.start_main_#t~malloc5.offset| (_ bv0 32)) .cse15)))) is different from false [2021-10-13 08:01:50,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:01:50,115 INFO L93 Difference]: Finished difference Result 549 states and 633 transitions. [2021-10-13 08:01:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 08:01:50,117 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 08:01:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:01:50,121 INFO L225 Difference]: With dead ends: 549 [2021-10-13 08:01:50,121 INFO L226 Difference]: Without dead ends: 549 [2021-10-13 08:01:50,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 57646.8ms TimeCoverageRelationStatistics Valid=347, Invalid=1368, Unknown=15, NotChecked=162, Total=1892 [2021-10-13 08:01:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-10-13 08:01:50,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 258. [2021-10-13 08:01:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 231 states have (on average 1.3722943722943723) internal successors, (317), 257 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:50,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 317 transitions. [2021-10-13 08:01:50,131 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 317 transitions. Word has length 35 [2021-10-13 08:01:50,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:01:50,132 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 317 transitions. [2021-10-13 08:01:50,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:50,132 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 317 transitions. [2021-10-13 08:01:50,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 08:01:50,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:01:50,133 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:01:50,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-13 08:01:50,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:01:50,346 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 08:01:50,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:01:50,347 INFO L82 PathProgramCache]: Analyzing trace with hash -267120982, now seen corresponding path program 1 times [2021-10-13 08:01:50,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:01:50,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203555066] [2021-10-13 08:01:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:01:50,347 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:01:50,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:01:50,348 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:01:50,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 08:01:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:01:50,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:01:50,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:01:51,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 08:01:51,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 08:01:51,397 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 37 treesize of output 25 [2021-10-13 08:01:51,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-13 08:01:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:01:51,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:01:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:01:51,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:01:51,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203555066] [2021-10-13 08:01:51,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203555066] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:01:51,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:01:51,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 08:01:51,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952991138] [2021-10-13 08:01:51,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:01:51,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:01:51,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:01:51,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:01:51,847 INFO L87 Difference]: Start difference. First operand 258 states and 317 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:01:52,424 INFO L93 Difference]: Finished difference Result 274 states and 333 transitions. [2021-10-13 08:01:52,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:01:52,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 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 [2021-10-13 08:01:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:01:52,426 INFO L225 Difference]: With dead ends: 274 [2021-10-13 08:01:52,427 INFO L226 Difference]: Without dead ends: 274 [2021-10-13 08:01:52,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 131.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:01:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-10-13 08:01:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 267. [2021-10-13 08:01:52,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 240 states have (on average 1.3583333333333334) internal successors, (326), 266 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:52,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 326 transitions. [2021-10-13 08:01:52,434 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 326 transitions. Word has length 35 [2021-10-13 08:01:52,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:01:52,434 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 326 transitions. [2021-10-13 08:01:52,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:52,434 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 326 transitions. [2021-10-13 08:01:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 08:01:52,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:01:52,435 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:01:52,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-13 08:01:52,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:01:52,651 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 08:01:52,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:01:52,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1580513470, now seen corresponding path program 1 times [2021-10-13 08:01:52,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:01:52,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553840613] [2021-10-13 08:01:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:01:52,653 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:01:52,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:01:52,654 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:01:52,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 08:01:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:01:53,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:01:53,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:01:53,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 08:01:53,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 08:01:53,473 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 37 treesize of output 25 [2021-10-13 08:01:53,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-13 08:01:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:01:53,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:01:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:01:53,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:01:53,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553840613] [2021-10-13 08:01:53,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553840613] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:01:53,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:01:53,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 08:01:53,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175759978] [2021-10-13 08:01:53,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:01:53,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:01:53,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:01:53,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:01:53,675 INFO L87 Difference]: Start difference. First operand 267 states and 326 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:01:54,339 INFO L93 Difference]: Finished difference Result 282 states and 342 transitions. [2021-10-13 08:01:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:01:54,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 08:01:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:01:54,343 INFO L225 Difference]: With dead ends: 282 [2021-10-13 08:01:54,343 INFO L226 Difference]: Without dead ends: 282 [2021-10-13 08:01:54,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 157.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:01:54,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-13 08:01:54,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 270. [2021-10-13 08:01:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 243 states have (on average 1.353909465020576) internal successors, (329), 269 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 329 transitions. [2021-10-13 08:01:54,350 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 329 transitions. Word has length 36 [2021-10-13 08:01:54,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:01:54,351 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 329 transitions. [2021-10-13 08:01:54,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 329 transitions. [2021-10-13 08:01:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 08:01:54,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:01:54,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:01:54,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-13 08:01:54,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:01:54,569 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr81ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 08:01:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:01:54,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1057648751, now seen corresponding path program 1 times [2021-10-13 08:01:54,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:01:54,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966046324] [2021-10-13 08:01:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:01:54,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:01:54,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:01:54,571 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:01:54,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 08:01:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:01:55,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:01:55,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:01:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:01:55,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:01:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:01:55,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:01:55,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966046324] [2021-10-13 08:01:55,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966046324] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:01:55,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:01:55,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:01:55,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492520606] [2021-10-13 08:01:55,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:01:55,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:01:55,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:01:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:01:55,684 INFO L87 Difference]: Start difference. First operand 270 states and 329 transitions. Second operand has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:01:55,834 INFO L93 Difference]: Finished difference Result 283 states and 333 transitions. [2021-10-13 08:01:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:01:55,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 08:01:55,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:01:55,836 INFO L225 Difference]: With dead ends: 283 [2021-10-13 08:01:55,836 INFO L226 Difference]: Without dead ends: 283 [2021-10-13 08:01:55,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:01:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-13 08:01:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 271. [2021-10-13 08:01:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 244 states have (on average 1.3524590163934427) internal successors, (330), 270 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 330 transitions. [2021-10-13 08:01:55,843 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 330 transitions. Word has length 37 [2021-10-13 08:01:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:01:55,843 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 330 transitions. [2021-10-13 08:01:55,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 330 transitions. [2021-10-13 08:01:55,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 08:01:55,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:01:55,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:01:55,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-13 08:01:56,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:01:56,059 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 08:01:56,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:01:56,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2019026693, now seen corresponding path program 1 times [2021-10-13 08:01:56,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:01:56,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587984109] [2021-10-13 08:01:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:01:56,060 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:01:56,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:01:56,060 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:01:56,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 08:01:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:01:56,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 08:01:56,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:01:56,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 08:01:56,987 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 08:01:56,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-13 08:01:57,063 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 24 treesize of output 20 [2021-10-13 08:01:57,301 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-13 08:01:57,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 33 [2021-10-13 08:01:57,433 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:01:57,433 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 38 [2021-10-13 08:01:57,931 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-10-13 08:01:57,931 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 45 treesize of output 62 [2021-10-13 08:01:58,137 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 61 treesize of output 57 [2021-10-13 08:01:58,913 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 08:01:58,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 70 [2021-10-13 08:01:59,488 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:01:59,489 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 85 [2021-10-13 08:01:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:01:59,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:24,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:24,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587984109] [2021-10-13 08:02:24,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587984109] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:24,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:24,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 11] imperfect sequences [] total 24 [2021-10-13 08:02:24,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572998582] [2021-10-13 08:02:24,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 08:02:24,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:24,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 08:02:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=498, Unknown=4, NotChecked=0, Total=600 [2021-10-13 08:02:24,777 INFO L87 Difference]: Start difference. First operand 271 states and 330 transitions. Second operand has 25 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:36,281 INFO L93 Difference]: Finished difference Result 282 states and 334 transitions. [2021-10-13 08:02:36,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 08:02:36,282 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 08:02:36,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:36,283 INFO L225 Difference]: With dead ends: 282 [2021-10-13 08:02:36,283 INFO L226 Difference]: Without dead ends: 282 [2021-10-13 08:02:36,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 28202.2ms TimeCoverageRelationStatistics Valid=389, Invalid=1587, Unknown=4, NotChecked=0, Total=1980 [2021-10-13 08:02:36,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-13 08:02:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 270. [2021-10-13 08:02:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 244 states have (on average 1.348360655737705) internal successors, (329), 269 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 329 transitions. [2021-10-13 08:02:36,291 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 329 transitions. Word has length 37 [2021-10-13 08:02:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:36,292 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 329 transitions. [2021-10-13 08:02:36,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 329 transitions. [2021-10-13 08:02:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 08:02:36,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:36,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:36,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:36,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:36,498 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 08:02:36,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash -2019026692, now seen corresponding path program 1 times [2021-10-13 08:02:36,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:36,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209039125] [2021-10-13 08:02:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:36,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:36,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:36,500 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:36,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-13 08:02:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:37,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 08:02:37,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:37,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 08:02:37,631 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 08:02:37,631 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 [2021-10-13 08:02:37,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 08:02:37,716 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 29 treesize of output 25 [2021-10-13 08:02:37,983 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-13 08:02:37,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 39 [2021-10-13 08:02:38,150 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:02:38,151 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 44 [2021-10-13 08:02:38,702 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-13 08:02:38,702 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 44 treesize of output 46 [2021-10-13 08:02:38,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-13 08:02:38,805 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 23 treesize of output 19 [2021-10-13 08:02:38,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 08:02:39,101 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 08:02:39,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-10-13 08:02:39,137 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-10-13 08:02:39,137 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 67 treesize of output 60 [2021-10-13 08:02:39,343 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:02:39,343 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 49 [2021-10-13 08:02:39,351 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:02:39,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2021-10-13 08:02:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:39,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:41,780 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem17.offset| (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~end~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem17.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem17.base|) |ULTIMATE.start_main_#t~mem17.offset| (_ bv0 32))) c_ULTIMATE.start_main_~end~0.base) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem17.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem17.base|) |ULTIMATE.start_main_#t~mem17.offset| (_ bv0 32))) c_ULTIMATE.start_main_~end~0.base) .cse0))))) (forall ((|ULTIMATE.start_main_#t~mem17.offset| (_ BitVec 32))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem17.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem17.base|) |ULTIMATE.start_main_#t~mem17.offset| (_ bv0 32))) c_ULTIMATE.start_main_~end~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~end~0.offset)))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32)))))) is different from false [2021-10-13 08:02:55,685 WARN L207 SmtUtils]: Spent 7.04 s on a formula simplification that was a NOOP. DAG size: 30 [2021-10-13 08:02:58,730 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem13.offset| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem13.offset|) c_ULTIMATE.start_main_~end~0.base))) c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| .cse0)))))))))) (bvule (_ bv12 32) (select (store |c_#length| .cse0 (_ bv12 32)) (_ bv0 32)))))) is different from false [2021-10-13 08:02:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:58,976 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:58,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209039125] [2021-10-13 08:02:58,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209039125] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:58,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:58,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 12] imperfect sequences [] total 25 [2021-10-13 08:02:58,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069200500] [2021-10-13 08:02:58,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 08:02:58,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:58,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 08:02:58,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=473, Unknown=5, NotChecked=90, Total=650 [2021-10-13 08:02:58,978 INFO L87 Difference]: Start difference. First operand 270 states and 329 transitions. Second operand has 26 states, 25 states have (on average 2.92) internal successors, (73), 26 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:19,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:03:19,148 INFO L93 Difference]: Finished difference Result 277 states and 335 transitions. [2021-10-13 08:03:19,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 08:03:19,149 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.92) internal successors, (73), 26 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 08:03:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:03:19,151 INFO L225 Difference]: With dead ends: 277 [2021-10-13 08:03:19,151 INFO L226 Difference]: Without dead ends: 277 [2021-10-13 08:03:19,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 31686.0ms TimeCoverageRelationStatistics Valid=461, Invalid=1989, Unknown=8, NotChecked=194, Total=2652 [2021-10-13 08:03:19,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-10-13 08:03:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 269. [2021-10-13 08:03:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 244 states have (on average 1.3442622950819672) internal successors, (328), 268 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 328 transitions. [2021-10-13 08:03:19,158 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 328 transitions. Word has length 37 [2021-10-13 08:03:19,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:03:19,158 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 328 transitions. [2021-10-13 08:03:19,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.92) internal successors, (73), 26 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:03:19,159 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 328 transitions. [2021-10-13 08:03:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 08:03:19,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:03:19,160 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:03:19,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:19,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:19,377 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 80 more)] === [2021-10-13 08:03:19,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:03:19,377 INFO L82 PathProgramCache]: Analyzing trace with hash -964702635, now seen corresponding path program 1 times [2021-10-13 08:03:19,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:03:19,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532574319] [2021-10-13 08:03:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:19,378 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:03:19,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:03:19,378 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:03:19,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 08:03:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:03:20,288 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:03:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:03:20,515 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 08:03:20,515 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:03:20,516 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 08:03:20,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 08:03:20,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 08:03:20,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 08:03:20,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 08:03:20,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 08:03:20,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 08:03:20,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 08:03:20,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 08:03:20,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 08:03:20,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 08:03:20,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 08:03:20,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 08:03:20,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 08:03:20,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 08:03:20,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 08:03:20,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 08:03:20,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 08:03:20,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 08:03:20,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-13 08:03:20,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-13 08:03:20,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-13 08:03:20,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-13 08:03:20,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-13 08:03:20,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-13 08:03:20,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-13 08:03:20,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-13 08:03:20,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-13 08:03:20,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-13 08:03:20,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-13 08:03:20,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-13 08:03:20,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-13 08:03:20,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-13 08:03:20,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-13 08:03:20,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-13 08:03:20,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-13 08:03:20,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-13 08:03:20,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-13 08:03:20,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-13 08:03:20,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION [2021-10-13 08:03:20,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION [2021-10-13 08:03:20,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-13 08:03:20,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION [2021-10-13 08:03:20,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION [2021-10-13 08:03:20,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION [2021-10-13 08:03:20,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-13 08:03:20,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION [2021-10-13 08:03:20,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION [2021-10-13 08:03:20,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION [2021-10-13 08:03:20,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION [2021-10-13 08:03:20,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION [2021-10-13 08:03:20,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION [2021-10-13 08:03:20,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATION [2021-10-13 08:03:20,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATION [2021-10-13 08:03:20,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATION [2021-10-13 08:03:20,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATION [2021-10-13 08:03:20,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATION [2021-10-13 08:03:20,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67REQUIRES_VIOLATION [2021-10-13 08:03:20,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69REQUIRES_VIOLATION [2021-10-13 08:03:20,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70REQUIRES_VIOLATION [2021-10-13 08:03:20,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72REQUIRES_VIOLATION [2021-10-13 08:03:20,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73REQUIRES_VIOLATION [2021-10-13 08:03:20,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:03:20,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:03:20,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:03:20,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78REQUIRES_VIOLATION [2021-10-13 08:03:20,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79REQUIRES_VIOLATION [2021-10-13 08:03:20,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:03:20,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:03:20,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:03:20,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:03:20,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-13 08:03:20,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:03:20,761 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:03:20,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:03:20 BoogieIcfgContainer [2021-10-13 08:03:20,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:03:20,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:03:20,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:03:20,810 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:03:20,811 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:24" (3/4) ... [2021-10-13 08:03:20,813 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 08:03:20,907 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:03:20,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:03:20,908 INFO L168 Benchmark]: Toolchain (without parser) took 538147.62 ms. Allocated memory was 69.2 MB in the beginning and 255.9 MB in the end (delta: 186.6 MB). Free memory was 49.5 MB in the beginning and 126.0 MB in the end (delta: -76.5 MB). Peak memory consumption was 109.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:20,909 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 69.2 MB. Free memory was 49.1 MB in the beginning and 49.1 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:03:20,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 559.90 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 43.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:20,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.52 ms. Allocated memory is still 69.2 MB. Free memory was 43.2 MB in the beginning and 40.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:20,915 INFO L168 Benchmark]: Boogie Preprocessor took 45.64 ms. Allocated memory is still 69.2 MB. Free memory was 40.7 MB in the beginning and 38.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:20,915 INFO L168 Benchmark]: RCFGBuilder took 986.34 ms. Allocated memory is still 69.2 MB. Free memory was 38.3 MB in the beginning and 31.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:20,916 INFO L168 Benchmark]: TraceAbstraction took 536396.09 ms. Allocated memory was 69.2 MB in the beginning and 255.9 MB in the end (delta: 186.6 MB). Free memory was 30.7 MB in the beginning and 128.1 MB in the end (delta: -97.4 MB). Peak memory consumption was 88.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:20,918 INFO L168 Benchmark]: Witness Printer took 97.40 ms. Allocated memory is still 255.9 MB. Free memory was 128.1 MB in the beginning and 126.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:03:20,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 69.2 MB. Free memory was 49.1 MB in the beginning and 49.1 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 559.90 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 43.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.52 ms. Allocated memory is still 69.2 MB. Free memory was 43.2 MB in the beginning and 40.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.64 ms. Allocated memory is still 69.2 MB. Free memory was 40.7 MB in the beginning and 38.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 986.34 ms. Allocated memory is still 69.2 MB. Free memory was 38.3 MB in the beginning and 31.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 536396.09 ms. Allocated memory was 69.2 MB in the beginning and 255.9 MB in the end (delta: 186.6 MB). Free memory was 30.7 MB in the beginning and 128.1 MB in the end (delta: -97.4 MB). Peak memory consumption was 88.8 MB. Max. memory is 16.1 GB. * Witness Printer took 97.40 ms. Allocated memory is still 255.9 MB. Free memory was 128.1 MB in the beginning and 126.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1040]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1003] SLL* list = malloc(sizeof(SLL)); [L1004] list->next = ((void*)0) [L1005] list->prev = ((void*)0) [L1006] COND FALSE !(!(list != ((void*)0))) [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1006] list->inner = malloc(sizeof(SLL)) [L1006] EXPR list->inner [L1006] list->inner->next = ((void*)0) [L1006] EXPR list->inner [L1006] list->inner->inner = ((void*)0) [L1006] EXPR list->inner [L1006] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L1006] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1008] SLL* end = list; [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1022] end = ((void*)0) [L1023] end = list [L1026] COND FALSE !(!(((void*)0) != end)) [L1028] COND TRUE ((void*)0) != end [L1030] int len = 0; [L1031] EXPR end->inner [L1031] SLL* inner = end->inner; [L1032] COND TRUE ((void*)0) != inner [L1034] COND TRUE len == 0 [L1035] len = 1 [L1038] COND FALSE !(!(((void*)0) != inner)) [L1039] EXPR inner->inner [L1039] COND FALSE !(!(((void*)0) == inner->inner)) [L1040] EXPR inner->next [L1040] COND TRUE !(((void*)0) != inner->next) [L1040] reach_error() - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: 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, 197 locations, 84 error locations. Started 1 CEGAR loops. OverallTime: 536260.7ms, OverallIterations: 33, TraceHistogramMax: 2, EmptinessCheckTime: 49.5ms, AutomataDifference: 335047.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4169 SDtfs, 7744 SDslu, 15175 SDs, 0 SdLazy, 11889 SolverSat, 586 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 127791.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1772 GetRequests, 1294 SyntacticMatches, 18 SemanticMatches, 460 ConstructedPredicates, 14 IntricatePredicates, 4 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 348486.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=30, InterpolantAutomatonStates: 351, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 260.7ms AutomataMinimizationTime, 32 MinimizatonAttempts, 1422 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 328.1ms SsaConstructionTime, 2333.8ms SatisfiabilityAnalysisTime, 180384.7ms InterpolantComputationTime, 851 NumberOfCodeBlocks, 851 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1558 ConstructedInterpolants, 162 QuantifiedInterpolants, 26689 SizeOfPredicates, 235 NumberOfNonLiveVariables, 3220 ConjunctsInSsa, 291 ConjunctsInUnsatCore, 68 InterpolantComputations, 62 PerfectInterpolantSequences, 10/16 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 proved your program to be incorrect! [2021-10-13 08:03:21,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6975f054-2687-4ca6-b692-4a888d2242fa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...