./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:23:11,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:23:11,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:23:11,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:23:11,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:23:11,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:23:11,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:23:11,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:23:11,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:23:11,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:23:11,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:23:11,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:23:11,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:23:11,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:23:11,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:23:11,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:23:11,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:23:11,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:23:11,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:23:11,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:23:11,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:23:11,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:23:11,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:23:11,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:23:11,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:23:11,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:23:11,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:23:11,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:23:11,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:23:11,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:23:11,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:23:11,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:23:11,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:23:11,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:23:11,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:23:11,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:23:11,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:23:11,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:23:11,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:23:11,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:23:11,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:23:11,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:23:11,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:23:11,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:23:11,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:23:11,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:23:11,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:23:11,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:23:11,882 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:23:11,882 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:23:11,883 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:23:11,883 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:23:11,883 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:23:11,883 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:23:11,884 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:23:11,884 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:23:11,884 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:23:11,884 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:23:11,885 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:23:11,885 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:23:11,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:23:11,886 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:23:11,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:23:11,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:23:11,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:23:11,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:23:11,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:23:11,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:23:11,888 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:23:11,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:23:11,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:23:11,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:23:11,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:23:11,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:23:11,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:11,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:23:11,890 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:23:11,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:23:11,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:23:11,891 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:23:11,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:23:11,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:23:11,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:23:11,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb [2022-10-17 17:23:12,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:23:12,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:23:12,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:23:12,239 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:23:12,240 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:23:12,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2022-10-17 17:23:12,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/data/c0878fe84/5f4ef2bf53e54cb0b7134c988313ee6a/FLAG53df85523 [2022-10-17 17:23:12,837 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:23:12,838 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2022-10-17 17:23:12,851 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/data/c0878fe84/5f4ef2bf53e54cb0b7134c988313ee6a/FLAG53df85523 [2022-10-17 17:23:13,141 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/data/c0878fe84/5f4ef2bf53e54cb0b7134c988313ee6a [2022-10-17 17:23:13,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:23:13,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:23:13,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:13,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:23:13,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:23:13,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b19471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13, skipping insertion in model container [2022-10-17 17:23:13,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:23:13,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:13,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2022-10-17 17:23:13,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2022-10-17 17:23:13,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2022-10-17 17:23:13,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2022-10-17 17:23:13,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:13,660 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:23:13,718 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2022-10-17 17:23:13,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2022-10-17 17:23:13,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2022-10-17 17:23:13,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2022-10-17 17:23:13,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:13,763 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:23:13,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13 WrapperNode [2022-10-17 17:23:13,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:13,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:13,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:23:13,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:23:13,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,834 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 122 [2022-10-17 17:23:13,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:13,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:23:13,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:23:13,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:23:13,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:23:13,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:23:13,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:23:13,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:23:13,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (1/1) ... [2022-10-17 17:23:13,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:13,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:13,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:23:13,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:23:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:23:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:23:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:23:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:23:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:23:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:23:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:23:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:23:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:23:14,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:14,155 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:14,157 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:14,451 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:14,544 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:14,544 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-10-17 17:23:14,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:14 BoogieIcfgContainer [2022-10-17 17:23:14,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:14,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:14,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:14,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:14,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:23:13" (1/3) ... [2022-10-17 17:23:14,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271d1912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:14, skipping insertion in model container [2022-10-17 17:23:14,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:13" (2/3) ... [2022-10-17 17:23:14,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271d1912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:14, skipping insertion in model container [2022-10-17 17:23:14,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:14" (3/3) ... [2022-10-17 17:23:14,557 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2022-10-17 17:23:14,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:14,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-10-17 17:23:14,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:14,658 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55173985, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:14,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 17:23:14,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:23:14,684 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:14,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:23:14,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:14,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash 153922345, now seen corresponding path program 1 times [2022-10-17 17:23:14,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:14,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578914212] [2022-10-17 17:23:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:14,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:14,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:14,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578914212] [2022-10-17 17:23:14,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578914212] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:14,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:14,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:23:14,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569168710] [2022-10-17 17:23:14,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:14,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:23:15,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:15,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:23:15,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:23:15,047 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) 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) [2022-10-17 17:23:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:15,125 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2022-10-17 17:23:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:23:15,127 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) 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 [2022-10-17 17:23:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:15,135 INFO L225 Difference]: With dead ends: 51 [2022-10-17 17:23:15,136 INFO L226 Difference]: Without dead ends: 25 [2022-10-17 17:23:15,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:23:15,145 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:15,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:23:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-17 17:23:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-10-17 17:23:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 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) [2022-10-17 17:23:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-10-17 17:23:15,182 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2022-10-17 17:23:15,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:15,183 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-10-17 17:23:15,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) 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) [2022-10-17 17:23:15,183 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-10-17 17:23:15,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:23:15,184 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:15,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:23:15,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:23:15,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:15,188 INFO L85 PathProgramCache]: Analyzing trace with hash 464256366, now seen corresponding path program 1 times [2022-10-17 17:23:15,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:15,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283443248] [2022-10-17 17:23:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:15,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:15,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:15,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283443248] [2022-10-17 17:23:15,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283443248] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:15,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:15,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418017240] [2022-10-17 17:23:15,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:15,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:15,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:15,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:15,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:15,480 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 4 states, 4 states have (on average 1.5) 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) [2022-10-17 17:23:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:15,576 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-10-17 17:23:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:23:15,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) 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 [2022-10-17 17:23:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:15,577 INFO L225 Difference]: With dead ends: 31 [2022-10-17 17:23:15,577 INFO L226 Difference]: Without dead ends: 29 [2022-10-17 17:23:15,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:15,580 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 35 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:15,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 24 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:23:15,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-17 17:23:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2022-10-17 17:23:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 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) [2022-10-17 17:23:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-10-17 17:23:15,586 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 6 [2022-10-17 17:23:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:15,587 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-10-17 17:23:15,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) 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) [2022-10-17 17:23:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-10-17 17:23:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:23:15,588 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:15,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:15,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:23:15,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash 870651803, now seen corresponding path program 1 times [2022-10-17 17:23:15,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:15,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886506884] [2022-10-17 17:23:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:15,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:15,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:15,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886506884] [2022-10-17 17:23:15,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886506884] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:15,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:15,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:23:15,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757015491] [2022-10-17 17:23:15,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:15,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:23:15,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:15,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:23:15,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:15,815 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:16,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:16,062 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-10-17 17:23:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:23:16,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-17 17:23:16,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:16,064 INFO L225 Difference]: With dead ends: 48 [2022-10-17 17:23:16,064 INFO L226 Difference]: Without dead ends: 46 [2022-10-17 17:23:16,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:23:16,067 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:16,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 61 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:23:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-10-17 17:23:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2022-10-17 17:23:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-10-17 17:23:16,076 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 9 [2022-10-17 17:23:16,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:16,077 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-10-17 17:23:16,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:16,077 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-10-17 17:23:16,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:23:16,078 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:16,078 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:16,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:23:16,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:16,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash 917959806, now seen corresponding path program 1 times [2022-10-17 17:23:16,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:16,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846307278] [2022-10-17 17:23:16,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:16,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:17,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:17,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846307278] [2022-10-17 17:23:17,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846307278] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:23:17,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242006339] [2022-10-17 17:23:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:17,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:17,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:17,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:17,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:23:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:17,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-17 17:23:17,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:17,570 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:23:17,571 INFO L390 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-10-17 17:23:17,590 INFO L390 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 [2022-10-17 17:23:17,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:17,865 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 174 [2022-10-17 17:23:17,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:17,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 186 [2022-10-17 17:23:18,035 INFO L356 Elim1Store]: treesize reduction 86, result has 26.5 percent of original size [2022-10-17 17:23:18,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 154 treesize of output 192 [2022-10-17 17:23:18,103 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:23:18,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 153 [2022-10-17 17:23:18,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 152 [2022-10-17 17:23:18,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 138 [2022-10-17 17:23:18,372 INFO L356 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2022-10-17 17:23:18,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 38 [2022-10-17 17:23:18,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 63 [2022-10-17 17:23:18,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2022-10-17 17:23:18,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:18,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:18,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:18,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:18,822 INFO L356 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2022-10-17 17:23:18,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 192 treesize of output 239 [2022-10-17 17:23:18,884 INFO L356 Elim1Store]: treesize reduction 10, result has 70.6 percent of original size [2022-10-17 17:23:18,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 180 treesize of output 214 [2022-10-17 17:23:18,973 INFO L356 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2022-10-17 17:23:18,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 171 treesize of output 218 [2022-10-17 17:23:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:19,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242006339] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:19,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [709157499] [2022-10-17 17:23:19,305 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-10-17 17:23:19,305 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:23:19,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:23:19,315 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:23:19,315 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:23:19,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:19,392 INFO L356 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2022-10-17 17:23:19,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 32 [2022-10-17 17:23:19,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:19,431 INFO L356 Elim1Store]: treesize reduction 36, result has 36.8 percent of original size [2022-10-17 17:23:19,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 28 [2022-10-17 17:23:19,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:19,508 INFO L356 Elim1Store]: treesize reduction 57, result has 38.0 percent of original size [2022-10-17 17:23:19,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 64 [2022-10-17 17:23:19,593 INFO L356 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-10-17 17:23:19,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 39 treesize of output 61 [2022-10-17 17:23:19,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-10-17 17:23:19,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 377 [2022-10-17 17:23:19,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:19,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 431 [2022-10-17 17:23:20,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:20,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:20,948 INFO L356 Elim1Store]: treesize reduction 284, result has 15.5 percent of original size [2022-10-17 17:23:20,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 371 treesize of output 437 [2022-10-17 17:23:21,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 347 treesize of output 415 [2022-10-17 17:23:21,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,326 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-10-17 17:23:21,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 17 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 254 treesize of output 326 [2022-10-17 17:23:21,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 17:23:21,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 17:23:21,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2022-10-17 17:23:21,659 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 453 treesize of output 414 [2022-10-17 17:23:21,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 17:23:21,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:21,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:21,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2022-10-17 17:23:22,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,189 INFO L356 Elim1Store]: treesize reduction 20, result has 56.5 percent of original size [2022-10-17 17:23:22,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 54 [2022-10-17 17:23:22,211 INFO L390 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 0 case distinctions, treesize of input 19 treesize of output 15 [2022-10-17 17:23:22,231 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:22,244 INFO L390 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 5 treesize of output 3 [2022-10-17 17:23:22,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,602 INFO L356 Elim1Store]: treesize reduction 121, result has 28.4 percent of original size [2022-10-17 17:23:22,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 1171 treesize of output 1233 [2022-10-17 17:23:22,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,652 INFO L390 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 0 case distinctions, treesize of input 1031 treesize of output 1025 [2022-10-17 17:23:22,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:22,682 INFO L390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 1025 treesize of output 1007 [2022-10-17 17:23:22,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:22,806 INFO L390 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 19 treesize of output 20 [2022-10-17 17:23:22,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:23:22,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 88 [2022-10-17 17:23:22,884 INFO L390 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 7 treesize of output 3 [2022-10-17 17:23:22,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:22,898 INFO L390 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 0 case distinctions, treesize of input 17 treesize of output 11 [2022-10-17 17:23:23,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:23,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:23,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:23,232 INFO L356 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2022-10-17 17:23:23,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 55 [2022-10-17 17:23:23,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:23,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:23,329 INFO L356 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-10-17 17:23:23,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 17 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 112 treesize of output 73 [2022-10-17 17:23:23,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:23,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:23,649 INFO L356 Elim1Store]: treesize reduction 136, result has 18.6 percent of original size [2022-10-17 17:23:23,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:23,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:23,851 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_21 input size 290 context size 290 output size 290 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) 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.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-10-17 17:23:23,854 INFO L158 Benchmark]: Toolchain (without parser) took 10703.84ms. Allocated memory was 119.5MB in the beginning and 209.7MB in the end (delta: 90.2MB). Free memory was 83.0MB in the beginning and 102.1MB in the end (delta: -19.1MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. [2022-10-17 17:23:23,854 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:23,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.90ms. Allocated memory is still 119.5MB. Free memory was 82.8MB in the beginning and 87.1MB in the end (delta: -4.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:23:23,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.03ms. Allocated memory is still 119.5MB. Free memory was 86.6MB in the beginning and 85.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:23,855 INFO L158 Benchmark]: Boogie Preprocessor took 58.41ms. Allocated memory is still 119.5MB. Free memory was 85.0MB in the beginning and 83.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:23:23,855 INFO L158 Benchmark]: RCFGBuilder took 650.81ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 60.4MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-10-17 17:23:23,855 INFO L158 Benchmark]: TraceAbstraction took 9303.27ms. Allocated memory was 119.5MB in the beginning and 209.7MB in the end (delta: 90.2MB). Free memory was 59.9MB in the beginning and 102.1MB in the end (delta: -42.2MB). Peak memory consumption was 68.9MB. Max. memory is 16.1GB. [2022-10-17 17:23:23,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 610.90ms. Allocated memory is still 119.5MB. Free memory was 82.8MB in the beginning and 87.1MB in the end (delta: -4.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.03ms. Allocated memory is still 119.5MB. Free memory was 86.6MB in the beginning and 85.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.41ms. Allocated memory is still 119.5MB. Free memory was 85.0MB in the beginning and 83.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 650.81ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 60.4MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 9303.27ms. Allocated memory was 119.5MB in the beginning and 209.7MB in the end (delta: 90.2MB). Free memory was 59.9MB in the beginning and 102.1MB in the end (delta: -42.2MB). Peak memory consumption was 68.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_21 input size 290 context size 290 output size 290 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_21 input size 290 context size 290 output size 290: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-10-17 17:23:23,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:23:26,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:23:26,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:23:26,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:23:26,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:23:26,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:23:26,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:23:26,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:23:26,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:23:26,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:23:26,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:23:26,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:23:26,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:23:26,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:23:26,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:23:26,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:23:26,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:23:26,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:23:26,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:23:26,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:23:26,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:23:26,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:23:26,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:23:26,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:23:26,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:23:26,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:23:26,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:23:26,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:23:26,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:23:26,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:23:26,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:23:26,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:23:26,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:23:26,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:23:26,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:23:26,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:23:26,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:23:26,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:23:26,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:23:26,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:23:26,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:23:26,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-10-17 17:23:26,490 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:23:26,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:23:26,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:23:26,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:23:26,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:23:26,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:23:26,495 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:23:26,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:23:26,496 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:23:26,496 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:23:26,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:23:26,497 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:23:26,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:23:26,499 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:23:26,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:23:26,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:23:26,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:23:26,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:23:26,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:23:26,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:23:26,501 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:23:26,501 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:23:26,501 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:23:26,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:23:26,502 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:23:26,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:23:26,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:23:26,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:23:26,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:23:26,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:26,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:23:26,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:23:26,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:23:26,504 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:23:26,504 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:23:26,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:23:26,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:23:26,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:23:26,506 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_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb [2022-10-17 17:23:26,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:23:27,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:23:27,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:23:27,016 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:23:27,017 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:23:27,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2022-10-17 17:23:27,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/data/dea1fd928/78d0603fcbe641909fc1ad230c8cf9d3/FLAG1c5d69378 [2022-10-17 17:23:27,777 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:23:27,784 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2022-10-17 17:23:27,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/data/dea1fd928/78d0603fcbe641909fc1ad230c8cf9d3/FLAG1c5d69378 [2022-10-17 17:23:28,080 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/data/dea1fd928/78d0603fcbe641909fc1ad230c8cf9d3 [2022-10-17 17:23:28,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:23:28,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:23:28,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:28,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:23:28,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:23:28,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40184255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28, skipping insertion in model container [2022-10-17 17:23:28,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:23:28,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:28,474 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2022-10-17 17:23:28,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2022-10-17 17:23:28,479 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2022-10-17 17:23:28,480 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2022-10-17 17:23:28,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:28,503 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:23:28,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2022-10-17 17:23:28,554 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2022-10-17 17:23:28,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2022-10-17 17:23:28,560 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2022-10-17 17:23:28,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:28,604 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:23:28,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28 WrapperNode [2022-10-17 17:23:28,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:28,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:28,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:23:28,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:23:28,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,690 INFO L138 Inliner]: procedures = 122, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2022-10-17 17:23:28,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:28,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:23:28,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:23:28,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:23:28,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,754 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:23:28,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:23:28,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:23:28,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:23:28,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (1/1) ... [2022-10-17 17:23:28,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:28,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:28,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:23:28,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:23:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:23:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:23:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:23:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:23:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:23:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:23:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 17:23:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:23:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:23:28,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:28,965 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:28,967 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:29,446 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:29,452 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:29,452 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-10-17 17:23:29,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:29 BoogieIcfgContainer [2022-10-17 17:23:29,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:29,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:29,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:29,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:29,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:23:28" (1/3) ... [2022-10-17 17:23:29,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbddfb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:29, skipping insertion in model container [2022-10-17 17:23:29,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:28" (2/3) ... [2022-10-17 17:23:29,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbddfb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:29, skipping insertion in model container [2022-10-17 17:23:29,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:29" (3/3) ... [2022-10-17 17:23:29,464 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2022-10-17 17:23:29,483 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:29,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-10-17 17:23:29,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:29,559 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@ec6c718, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:29,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 17:23:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:29,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:23:29,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:29,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:23:29,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:29,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:29,579 INFO L85 PathProgramCache]: Analyzing trace with hash 889937798, now seen corresponding path program 1 times [2022-10-17 17:23:29,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:29,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11910759] [2022-10-17 17:23:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:29,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:29,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:29,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:29,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:23:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:29,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:23:29,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:29,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:29,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:29,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11910759] [2022-10-17 17:23:29,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11910759] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:29,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:29,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:23:29,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973361298] [2022-10-17 17:23:29,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:29,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:23:29,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:29,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:23:29,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:23:29,829 INFO L87 Difference]: Start difference. First operand has 32 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-10-17 17:23:29,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:29,857 INFO L93 Difference]: Finished difference Result 60 states and 97 transitions. [2022-10-17 17:23:29,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:23:29,859 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2022-10-17 17:23:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:29,868 INFO L225 Difference]: With dead ends: 60 [2022-10-17 17:23:29,868 INFO L226 Difference]: Without dead ends: 26 [2022-10-17 17:23:29,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:23:29,875 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:29,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:23:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-17 17:23:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-10-17 17:23:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-10-17 17:23:29,912 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 6 [2022-10-17 17:23:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:29,913 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-10-17 17:23:29,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-10-17 17:23:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-10-17 17:23:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:23:29,914 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:29,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:23:29,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:30,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:23:30,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:30,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash 889639888, now seen corresponding path program 1 times [2022-10-17 17:23:30,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:30,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875511779] [2022-10-17 17:23:30,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:30,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:30,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:30,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:30,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:23:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:30,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:23:30,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:30,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-17 17:23:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:30,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:30,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:30,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875511779] [2022-10-17 17:23:30,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875511779] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:30,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:30,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:23:30,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975596465] [2022-10-17 17:23:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:30,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:30,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:30,382 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:30,651 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-10-17 17:23:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:23:30,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:23:30,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:30,654 INFO L225 Difference]: With dead ends: 31 [2022-10-17 17:23:30,654 INFO L226 Difference]: Without dead ends: 29 [2022-10-17 17:23:30,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:30,656 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:30,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 27 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:23:30,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-17 17:23:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-10-17 17:23:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 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) [2022-10-17 17:23:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-10-17 17:23:30,664 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 6 [2022-10-17 17:23:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:30,665 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-10-17 17:23:30,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-10-17 17:23:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:23:30,666 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:30,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:30,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:30,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:23:30,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:30,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash -977335784, now seen corresponding path program 1 times [2022-10-17 17:23:30,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:30,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791042694] [2022-10-17 17:23:30,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:30,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:30,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:30,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:30,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 17:23:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:31,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 17:23:31,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:31,073 INFO L390 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 [2022-10-17 17:23:31,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:31,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:31,178 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:31,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791042694] [2022-10-17 17:23:31,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791042694] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:31,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:31,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:23:31,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507535322] [2022-10-17 17:23:31,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:31,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:23:31,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:31,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:23:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:31,182 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:31,852 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2022-10-17 17:23:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:23:31,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-17 17:23:31,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:31,854 INFO L225 Difference]: With dead ends: 53 [2022-10-17 17:23:31,854 INFO L226 Difference]: Without dead ends: 51 [2022-10-17 17:23:31,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:23:31,856 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 26 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:31,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 62 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 17:23:31,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-17 17:23:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2022-10-17 17:23:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-10-17 17:23:31,869 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 9 [2022-10-17 17:23:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:31,870 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-10-17 17:23:31,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-10-17 17:23:31,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:23:31,871 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:31,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:31,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:32,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:23:32,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:32,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash -822388269, now seen corresponding path program 1 times [2022-10-17 17:23:32,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:32,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331421131] [2022-10-17 17:23:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:32,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:32,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:32,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:32,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 17:23:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:32,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-17 17:23:32,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:32,383 INFO L390 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 [2022-10-17 17:23:32,418 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:23:32,419 INFO L390 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-10-17 17:23:32,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:32,497 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-10-17 17:23:32,528 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:23:32,528 INFO L390 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 16 treesize of output 22 [2022-10-17 17:23:32,553 INFO L390 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 7 treesize of output 3 [2022-10-17 17:23:32,580 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 17:23:32,581 INFO L390 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 13 treesize of output 13 [2022-10-17 17:23:32,718 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-10-17 17:23:32,718 INFO L390 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 2 case distinctions, treesize of input 22 treesize of output 34 [2022-10-17 17:23:32,737 INFO L390 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 8 treesize of output 7 [2022-10-17 17:23:32,763 INFO L390 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 7 treesize of output 3 [2022-10-17 17:23:32,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:32,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:32,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:33,020 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:23:33,020 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2022-10-17 17:23:33,039 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_177 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_27| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_2 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_177) |v_ULTIMATE.start_main_~end~0#1.base_27| v_arrayElimArr_2) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-10-17 17:23:33,085 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_28| (_ BitVec 32)) (v_ArrVal_177 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_27| (_ BitVec 32)) (v_ArrVal_175 (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_2 (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_28|))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_175)) |v_ULTIMATE.start_main_~end~0#1.base_28| v_ArrVal_177) |v_ULTIMATE.start_main_~end~0#1.base_27| v_arrayElimArr_2) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-10-17 17:23:33,122 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:23:33,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2022-10-17 17:23:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-10-17 17:23:33,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331421131] [2022-10-17 17:23:33,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331421131] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1664476167] [2022-10-17 17:23:33,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:33,125 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-10-17 17:23:33,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/cvc4 [2022-10-17 17:23:33,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-10-17 17:23:33,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-10-17 17:23:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:33,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-17 17:23:33,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:33,442 INFO L390 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 [2022-10-17 17:23:33,471 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:23:33,477 INFO L390 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-10-17 17:23:33,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:33,531 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-10-17 17:23:33,554 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:23:33,554 INFO L390 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 16 treesize of output 22 [2022-10-17 17:23:33,569 INFO L390 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 7 treesize of output 3 [2022-10-17 17:23:33,610 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 17:23:33,610 INFO L390 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 13 treesize of output 13 [2022-10-17 17:23:33,690 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-10-17 17:23:33,691 INFO L390 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 2 case distinctions, treesize of input 22 treesize of output 34 [2022-10-17 17:23:33,702 INFO L390 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 8 treesize of output 7 [2022-10-17 17:23:33,725 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:33,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:33,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:33,832 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:23:33,833 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2022-10-17 17:23:33,851 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_263 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_33| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_5 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_263) |v_ULTIMATE.start_main_~end~0#1.base_33| v_arrayElimArr_5) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-10-17 17:23:33,906 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (_ BitVec 32)) (v_ArrVal_263 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_33| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_34| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_5 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_261)) |v_ULTIMATE.start_main_~end~0#1.base_34| v_ArrVal_263) |v_ULTIMATE.start_main_~end~0#1.base_33| v_arrayElimArr_5) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_34|))))) is different from false [2022-10-17 17:23:33,950 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:23:33,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2022-10-17 17:23:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-10-17 17:23:33,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1664476167] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:33,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538979618] [2022-10-17 17:23:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:33,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:33,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:33,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:33,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 17:23:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:34,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-17 17:23:34,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:34,123 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:23:34,123 INFO L390 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-10-17 17:23:34,140 INFO L390 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 [2022-10-17 17:23:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:34,165 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-10-17 17:23:34,192 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:23:34,193 INFO L390 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 16 treesize of output 22 [2022-10-17 17:23:34,209 INFO L390 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 7 treesize of output 3 [2022-10-17 17:23:34,244 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-10-17 17:23:34,244 INFO L390 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 19 treesize of output 27 [2022-10-17 17:23:34,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:34,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:34,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-10-17 17:23:34,361 INFO L356 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-10-17 17:23:34,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-10-17 17:23:34,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:34,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:34,472 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_39| (_ BitVec 32)) (v_ArrVal_351 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_352 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_39|) (_ bv0 1))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_352) |v_ULTIMATE.start_main_~end~0#1.base_39| v_ArrVal_351) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-10-17 17:23:34,583 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:23:34,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2022-10-17 17:23:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:34,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538979618] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:34,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-10-17 17:23:34,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 16 [2022-10-17 17:23:34,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146315560] [2022-10-17 17:23:34,586 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-10-17 17:23:34,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 17:23:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:34,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 17:23:34,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=83, Unknown=5, NotChecked=110, Total=240 [2022-10-17 17:23:34,588 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 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) [2022-10-17 17:23:34,907 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (forall ((v_ArrVal_177 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_27| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_2 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_177) |v_ULTIMATE.start_main_~end~0#1.base_27| v_arrayElimArr_2) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)))) (forall ((v_ArrVal_263 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_33| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_5 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_263) |v_ULTIMATE.start_main_~end~0#1.base_33| v_arrayElimArr_5) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)))) (not (= |c_ULTIMATE.start_main_~end~0#1.base| |c_ULTIMATE.start_main_~list~0#1.base|)) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~end~0#1.base_39| (_ BitVec 32)) (v_ArrVal_351 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_352 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_39|) (_ bv0 1))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_352) |v_ULTIMATE.start_main_~end~0#1.base_39| v_ArrVal_351) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)))) (= (_ bv0 1) (bvadd (select |c_#valid| |c_ULTIMATE.start_main_~end~0#1.base|) (_ bv1 1))) (= (_ bv0 1) (bvadd (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|) (_ bv1 1))))) is different from false [2022-10-17 17:23:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:35,126 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2022-10-17 17:23:35,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:23:35,127 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 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 11 [2022-10-17 17:23:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:35,128 INFO L225 Difference]: With dead ends: 61 [2022-10-17 17:23:35,128 INFO L226 Difference]: Without dead ends: 59 [2022-10-17 17:23:35,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=115, Unknown=6, NotChecked=162, Total=342 [2022-10-17 17:23:35,130 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:35,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 163 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 187 Unchecked, 0.4s Time] [2022-10-17 17:23:35,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-17 17:23:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32. [2022-10-17 17:23:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-10-17 17:23:35,141 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2022-10-17 17:23:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:35,141 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-10-17 17:23:35,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 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) [2022-10-17 17:23:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-10-17 17:23:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:23:35,142 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:35,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:35,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:35,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:35,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-17 17:23:35,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:35,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:35,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:35,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1674631615, now seen corresponding path program 1 times [2022-10-17 17:23:35,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:35,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67457154] [2022-10-17 17:23:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:35,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:35,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:35,756 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:35,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 17:23:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:35,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:23:35,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:35,863 INFO L390 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 [2022-10-17 17:23:35,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-10-17 17:23:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:35,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:35,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:35,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67457154] [2022-10-17 17:23:35,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67457154] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:35,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:35,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:23:35,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582466601] [2022-10-17 17:23:35,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:35,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:23:35,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:23:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:35,936 INFO L87 Difference]: Start difference. First operand 32 states and 38 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) [2022-10-17 17:23:36,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:36,359 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2022-10-17 17:23:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:23:36,363 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 [2022-10-17 17:23:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:36,364 INFO L225 Difference]: With dead ends: 65 [2022-10-17 17:23:36,364 INFO L226 Difference]: Without dead ends: 53 [2022-10-17 17:23:36,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:23:36,366 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:36,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 92 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:23:36,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-10-17 17:23:36,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2022-10-17 17:23:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-10-17 17:23:36,378 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2022-10-17 17:23:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:36,379 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-10-17 17:23:36,379 INFO L496 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) [2022-10-17 17:23:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-10-17 17:23:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:23:36,380 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:36,380 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:36,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:36,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:23:36,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:36,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2053285582, now seen corresponding path program 2 times [2022-10-17 17:23:36,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:36,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848402411] [2022-10-17 17:23:36,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 17:23:36,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:36,599 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:36,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 17:23:36,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 17:23:36,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:23:36,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-17 17:23:36,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:36,961 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:23:36,961 INFO L390 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-10-17 17:23:36,977 INFO L390 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 [2022-10-17 17:23:37,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:37,017 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-10-17 17:23:37,042 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:23:37,043 INFO L390 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 16 treesize of output 22 [2022-10-17 17:23:37,055 INFO L390 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 7 treesize of output 3 [2022-10-17 17:23:37,086 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-10-17 17:23:37,087 INFO L390 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 19 treesize of output 27 [2022-10-17 17:23:37,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:37,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:37,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-10-17 17:23:37,216 INFO L356 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-10-17 17:23:37,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-10-17 17:23:37,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:37,343 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:23:37,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-10-17 17:23:37,387 INFO L356 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-10-17 17:23:37,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-10-17 17:23:37,486 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-10-17 17:23:37,487 INFO L390 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 2 case distinctions, treesize of input 22 treesize of output 34 [2022-10-17 17:23:37,496 INFO L390 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 8 treesize of output 7 [2022-10-17 17:23:37,514 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:23:37,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:37,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:37,723 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:23:37,724 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2022-10-17 17:23:37,738 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_520 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32)) (v_arrayElimArr_10 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_520) |v_ULTIMATE.start_main_~end~0#1.base_47| v_arrayElimArr_10) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_10 (_ bv4 32)))))) is different from false [2022-10-17 17:23:37,769 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_520 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32)) (v_ArrVal_518 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_48| (_ BitVec 32)) (v_arrayElimArr_10 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_10 (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_48|))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_518) |v_ULTIMATE.start_main_~end~0#1.base_48| v_ArrVal_520) |v_ULTIMATE.start_main_~end~0#1.base_47| v_arrayElimArr_10) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-10-17 17:23:37,816 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_520 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_516 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32)) (v_ArrVal_518 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_49| (_ BitVec 32)) (v_arrayElimArr_10 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_514 (_ BitVec 1))) (or (not (= (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_49| v_ArrVal_514) |v_ULTIMATE.start_main_~end~0#1.base_48|) (_ bv0 1))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_10 (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_49|))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_516) |v_ULTIMATE.start_main_~end~0#1.base_49| v_ArrVal_518) |v_ULTIMATE.start_main_~end~0#1.base_48| v_ArrVal_520) |v_ULTIMATE.start_main_~end~0#1.base_47| v_arrayElimArr_10) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-10-17 17:23:37,899 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_50| (_ BitVec 32)) (v_ArrVal_520 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_511 (_ BitVec 32)) (v_ArrVal_516 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32)) (v_ArrVal_518 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_49| (_ BitVec 32)) (v_arrayElimArr_10 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_514 (_ BitVec 1))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_50| (_ bv1 1)))) (or (not (= (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_49| v_ArrVal_514) |v_ULTIMATE.start_main_~end~0#1.base_48|) (_ bv0 1))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_10 (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_50|))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_511)) |v_ULTIMATE.start_main_~end~0#1.base_50| v_ArrVal_516) |v_ULTIMATE.start_main_~end~0#1.base_49| v_ArrVal_518) |v_ULTIMATE.start_main_~end~0#1.base_48| v_ArrVal_520) |v_ULTIMATE.start_main_~end~0#1.base_47| v_arrayElimArr_10) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_49|)))))) is different from false [2022-10-17 17:23:37,952 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:23:37,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2022-10-17 17:23:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-10-17 17:23:37,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:37,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848402411] [2022-10-17 17:23:37,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848402411] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:37,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1059509975] [2022-10-17 17:23:37,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 17:23:37,955 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-10-17 17:23:37,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/cvc4 [2022-10-17 17:23:37,960 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-10-17 17:23:37,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-10-17 17:23:38,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:23:38,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631476553] [2022-10-17 17:23:38,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 17:23:38,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:38,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:38,277 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:38,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 1 [2022-10-17 17:23:38,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 17:23:38,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 17:23:38,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:23:38,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-17 17:23:38,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:38,609 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:23:38,612 INFO L390 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-10-17 17:23:38,629 INFO L390 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 [2022-10-17 17:23:38,675 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-10-17 17:23:38,675 INFO L390 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 19 treesize of output 27 [2022-10-17 17:23:38,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:23:38,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-10-17 17:23:38,696 INFO L390 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 16 treesize of output 18 [2022-10-17 17:23:38,798 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-17 17:23:38,799 INFO L390 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 2 case distinctions, treesize of input 19 treesize of output 31 [2022-10-17 17:23:38,816 INFO L390 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 7 treesize of output 3 [2022-10-17 17:23:38,851 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-10-17 17:23:38,852 INFO L390 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 19 treesize of output 27 [2022-10-17 17:23:38,885 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 17:23:38,885 INFO L390 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 13 treesize of output 13 [2022-10-17 17:23:38,926 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:23:38,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-10-17 17:23:39,001 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-10-17 17:23:39,001 INFO L390 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 2 case distinctions, treesize of input 22 treesize of output 34 [2022-10-17 17:23:39,011 INFO L390 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 8 treesize of output 7 [2022-10-17 17:23:39,031 INFO L390 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 7 treesize of output 3 [2022-10-17 17:23:39,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:23:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:39,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:23:39,148 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:23:39,149 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2022-10-17 17:23:39,163 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_57| (_ BitVec 32)) (v_ArrVal_779 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_13 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_13 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_779) |v_ULTIMATE.start_main_~end~0#1.base_57| v_arrayElimArr_13) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-10-17 17:23:39,195 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_775 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_57| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (v_ArrVal_779 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_13 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_13 (_ bv4 32)))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_58|) (_ bv0 1))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_775) |v_ULTIMATE.start_main_~end~0#1.base_58| v_ArrVal_779) |v_ULTIMATE.start_main_~end~0#1.base_57| v_arrayElimArr_13) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-10-17 17:23:39,242 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_772 (_ BitVec 1)) (v_ArrVal_775 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_57| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_59| (_ BitVec 32)) (v_ArrVal_779 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_13 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_13 (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_59|))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_773) |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_775) |v_ULTIMATE.start_main_~end~0#1.base_58| v_ArrVal_779) |v_ULTIMATE.start_main_~end~0#1.base_57| v_arrayElimArr_13) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_772) |v_ULTIMATE.start_main_~end~0#1.base_58|) (_ bv0 1))))) is different from false [2022-10-17 17:23:39,318 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_60| (_ BitVec 32)) (v_ArrVal_773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_772 (_ BitVec 1)) (v_ArrVal_769 (_ BitVec 32)) (v_ArrVal_775 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_57| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_59| (_ BitVec 32)) (v_ArrVal_779 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_13 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_767 (_ BitVec 1))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_60| v_ArrVal_767))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_13 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_769)) |v_ULTIMATE.start_main_~end~0#1.base_60| v_ArrVal_773) |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_775) |v_ULTIMATE.start_main_~end~0#1.base_58| v_ArrVal_779) |v_ULTIMATE.start_main_~end~0#1.base_57| v_arrayElimArr_13) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_60|) (_ bv0 1))) (not (= (_ bv0 1) (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_772) |v_ULTIMATE.start_main_~end~0#1.base_58|))) (not (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_59|)))))) is different from false [2022-10-17 17:23:39,371 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:23:39,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2022-10-17 17:23:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-10-17 17:23:39,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631476553] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:23:39,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2022-10-17 17:23:39,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 9] total 20 [2022-10-17 17:23:39,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824120926] [2022-10-17 17:23:39,373 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2022-10-17 17:23:39,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-17 17:23:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:39,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-17 17:23:39,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=8, NotChecked=216, Total=380 [2022-10-17 17:23:39,375 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 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) [2022-10-17 17:23:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:41,546 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2022-10-17 17:23:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 17:23:41,547 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 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 13 [2022-10-17 17:23:41,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:41,549 INFO L225 Difference]: With dead ends: 83 [2022-10-17 17:23:41,550 INFO L226 Difference]: Without dead ends: 81 [2022-10-17 17:23:41,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=276, Unknown=8, NotChecked=344, Total=756 [2022-10-17 17:23:41,551 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 73 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:41,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 228 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 133 Invalid, 0 Unknown, 310 Unchecked, 1.6s Time] [2022-10-17 17:23:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-10-17 17:23:41,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 44. [2022-10-17 17:23:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2022-10-17 17:23:41,577 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 13 [2022-10-17 17:23:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:41,578 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2022-10-17 17:23:41,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 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) [2022-10-17 17:23:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2022-10-17 17:23:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:23:41,581 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:41,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:41,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:41,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:41,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:41,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-10-17 17:23:41,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:41,999 INFO L85 PathProgramCache]: Analyzing trace with hash -761736198, now seen corresponding path program 1 times [2022-10-17 17:23:41,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:41,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452528449] [2022-10-17 17:23:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:41,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:42,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:42,000 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:42,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26763611-678e-4710-ba2d-ba32cb28d83c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process