./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI --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 a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 --- 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-5e519f3 [2022-11-03 02:14:15,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:14:15,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:14:15,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:14:15,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:14:15,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:14:15,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:14:15,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:14:15,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:14:15,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:14:15,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:14:15,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:14:15,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:14:15,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:14:15,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:14:15,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:14:15,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:14:15,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:14:15,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:14:15,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:14:15,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:14:15,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:14:15,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:14:15,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:14:16,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:14:16,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:14:16,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:14:16,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:14:16,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:14:16,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:14:16,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:14:16,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:14:16,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:14:16,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:14:16,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:14:16,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:14:16,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:14:16,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:14:16,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:14:16,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:14:16,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:14:16,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:14:16,071 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:14:16,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:14:16,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:14:16,072 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:14:16,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:14:16,073 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:14:16,073 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:14:16,074 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:14:16,074 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:14:16,074 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:14:16,074 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:14:16,075 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:14:16,075 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:14:16,075 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:14:16,075 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:14:16,076 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:14:16,076 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:14:16,076 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:14:16,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:14:16,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:14:16,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:14:16,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:14:16,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:14:16,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:14:16,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:14:16,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:14:16,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:14:16,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:14:16,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:14:16,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:14:16,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:14:16,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:14:16,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:16,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:14:16,081 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:14:16,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:14:16,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:14:16,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:14:16,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:14:16,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:14:16,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:14:16,082 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_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 [2022-11-03 02:14:16,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:14:16,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:14:16,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:14:16,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:14:16,459 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:14:16,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2022-11-03 02:14:16,550 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/data/a1c176955/7cc11601b1c44fa899af7818f91b4c40/FLAGa4e718347 [2022-11-03 02:14:17,136 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:14:17,136 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2022-11-03 02:14:17,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/data/a1c176955/7cc11601b1c44fa899af7818f91b4c40/FLAGa4e718347 [2022-11-03 02:14:17,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/data/a1c176955/7cc11601b1c44fa899af7818f91b4c40 [2022-11-03 02:14:17,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:14:17,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:14:17,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:17,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:14:17,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:14:17,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:17,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1107912d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17, skipping insertion in model container [2022-11-03 02:14:17,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:17,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:14:17,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:14:17,883 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_d1773de8-c1ea-4fef-97e6-3b819b42fda7/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i[24177,24190] [2022-11-03 02:14:17,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:17,901 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:14:17,961 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_d1773de8-c1ea-4fef-97e6-3b819b42fda7/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i[24177,24190] [2022-11-03 02:14:17,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:17,990 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:14:17,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17 WrapperNode [2022-11-03 02:14:17,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:17,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:17,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:14:17,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:14:17,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,065 INFO L138 Inliner]: procedures = 126, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 105 [2022-11-03 02:14:18,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:18,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:14:18,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:14:18,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:14:18,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,105 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:14:18,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:14:18,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:14:18,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:14:18,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (1/1) ... [2022-11-03 02:14:18,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:18,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:18,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:14:18,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:14:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:14:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-11-03 02:14:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-11-03 02:14:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:14:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:14:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:14:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:14:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:14:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:14:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:14:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:14:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:14:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:14:18,358 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:14:18,360 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:14:18,679 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:14:18,793 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:14:18,794 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:14:18,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:14:18 BoogieIcfgContainer [2022-11-03 02:14:18,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:14:18,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:14:18,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:14:18,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:14:18,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:14:17" (1/3) ... [2022-11-03 02:14:18,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e009c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:14:18, skipping insertion in model container [2022-11-03 02:14:18,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:17" (2/3) ... [2022-11-03 02:14:18,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e009c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:14:18, skipping insertion in model container [2022-11-03 02:14:18,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:14:18" (3/3) ... [2022-11-03 02:14:18,823 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2022-11-03 02:14:18,844 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:14:18,844 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:14:18,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:14:18,930 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;@7ed1a36a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:14:18,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:14:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:14:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:14:18,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:18,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:18,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:18,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:18,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1325907828, now seen corresponding path program 1 times [2022-11-03 02:14:18,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:18,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523236266] [2022-11-03 02:14:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:18,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:19,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:19,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523236266] [2022-11-03 02:14:19,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523236266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:19,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:19,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199490209] [2022-11-03 02:14:19,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:19,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:19,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:19,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:19,440 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:14:19,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:19,516 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2022-11-03 02:14:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:19,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-03 02:14:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:19,526 INFO L225 Difference]: With dead ends: 25 [2022-11-03 02:14:19,527 INFO L226 Difference]: Without dead ends: 16 [2022-11-03 02:14:19,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:19,536 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:19,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:14:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-03 02:14:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2022-11-03 02:14:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:14:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-03 02:14:19,583 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-11-03 02:14:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:19,584 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-03 02:14:19,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:14:19,585 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-03 02:14:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:14:19,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:19,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:19,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:14:19,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:19,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:19,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1696736134, now seen corresponding path program 1 times [2022-11-03 02:14:19,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:19,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967027692] [2022-11-03 02:14:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:19,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:14:19,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967027692] [2022-11-03 02:14:19,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967027692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:19,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:19,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:14:19,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867106364] [2022-11-03 02:14:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:19,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:14:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:14:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:14:19,862 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:14:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:19,912 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-11-03 02:14:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:14:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-03 02:14:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:19,913 INFO L225 Difference]: With dead ends: 18 [2022-11-03 02:14:19,913 INFO L226 Difference]: Without dead ends: 15 [2022-11-03 02:14:19,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:14:19,915 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:19,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:14:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-03 02:14:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-03 02:14:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:14:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-03 02:14:19,921 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 16 [2022-11-03 02:14:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:19,921 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-03 02:14:19,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:14:19,921 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-03 02:14:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:14:19,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:19,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:19,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:14:19,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:19,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:19,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1059394163, now seen corresponding path program 1 times [2022-11-03 02:14:19,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:19,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335673176] [2022-11-03 02:14:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:19,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:14:20,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:20,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335673176] [2022-11-03 02:14:20,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335673176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:14:20,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885381403] [2022-11-03 02:14:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:20,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:20,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:20,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:14:20,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:14:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:20,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:14:20,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:14:20,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:14:20,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885381403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:20,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [459265942] [2022-11-03 02:14:20,579 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-03 02:14:20,579 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:14:20,583 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:14:20,590 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:14:20,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:14:20,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:20,717 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:14:20,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-03 02:14:20,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:20,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 02:14:20,821 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 12 treesize of output 9 [2022-11-03 02:14:20,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:14:20,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:20,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:20,871 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 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 02:14:20,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:20,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:20,889 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 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 02:14:20,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:20,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:20,903 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 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 02:14:20,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:20,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 02:14:20,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:20,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-03 02:14:21,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:21,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 02:14:21,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:21,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-03 02:14:21,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:14:21,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 02:14:21,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 02:14:21,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:14:21,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:14:21,717 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:14:21,719 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:14:21,733 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:14:22,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:14:22,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-03 02:14:22,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:14:22,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-03 02:14:22,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 02:14:22,092 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:14:22,094 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:14:22,096 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:14:22,098 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:14:22,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:22,178 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 02:14:22,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 30 [2022-11-03 02:14:22,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:22,213 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:14:22,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 34 [2022-11-03 02:14:22,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 18 [2022-11-03 02:14:22,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:22,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:22,436 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 02:14:22,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 143 [2022-11-03 02:14:22,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:22,513 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:14:22,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 133 [2022-11-03 02:14:22,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,543 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 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-03 02:14:22,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,579 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 0 case distinctions, treesize of input 47 treesize of output 11 [2022-11-03 02:14:22,630 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-03 02:14:22,630 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 105 treesize of output 70 [2022-11-03 02:14:22,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,642 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 70 treesize of output 56 [2022-11-03 02:14:22,732 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-03 02:14:22,733 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 2 case distinctions, treesize of input 106 treesize of output 87 [2022-11-03 02:14:22,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,748 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 73 treesize of output 61 [2022-11-03 02:14:22,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,808 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 02:14:22,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,827 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-03 02:14:22,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,844 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 02:14:22,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:22,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:22,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:24,099 INFO L356 Elim1Store]: treesize reduction 328, result has 17.6 percent of original size [2022-11-03 02:14:24,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:24,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:24,302 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_75| input size 167 context size 167 output size 167 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) [2022-11-03 02:14:24,306 INFO L158 Benchmark]: Toolchain (without parser) took 6872.98ms. Allocated memory was 109.1MB in the beginning and 192.9MB in the end (delta: 83.9MB). Free memory was 74.9MB in the beginning and 140.6MB in the end (delta: -65.6MB). Peak memory consumption was 79.4MB. Max. memory is 16.1GB. [2022-11-03 02:14:24,306 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:14:24,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 555.10ms. Allocated memory is still 109.1MB. Free memory was 74.7MB in the beginning and 76.0MB in the end (delta: -1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:14:24,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.18ms. Allocated memory is still 109.1MB. Free memory was 76.0MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:14:24,315 INFO L158 Benchmark]: Boogie Preprocessor took 42.30ms. Allocated memory is still 109.1MB. Free memory was 73.9MB in the beginning and 72.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:14:24,315 INFO L158 Benchmark]: RCFGBuilder took 687.14ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 72.1MB in the beginning and 104.7MB in the end (delta: -32.6MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2022-11-03 02:14:24,315 INFO L158 Benchmark]: TraceAbstraction took 5506.33ms. Allocated memory was 132.1MB in the beginning and 192.9MB in the end (delta: 60.8MB). Free memory was 103.8MB in the beginning and 140.6MB in the end (delta: -36.7MB). Peak memory consumption was 85.5MB. Max. memory is 16.1GB. [2022-11-03 02:14:24,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 555.10ms. Allocated memory is still 109.1MB. Free memory was 74.7MB in the beginning and 76.0MB in the end (delta: -1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.18ms. Allocated memory is still 109.1MB. Free memory was 76.0MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.30ms. Allocated memory is still 109.1MB. Free memory was 73.9MB in the beginning and 72.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 687.14ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 72.1MB in the beginning and 104.7MB in the end (delta: -32.6MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5506.33ms. Allocated memory was 132.1MB in the beginning and 192.9MB in the end (delta: 60.8MB). Free memory was 103.8MB in the beginning and 140.6MB in the end (delta: -36.7MB). Peak memory consumption was 85.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_75| input size 167 context size 167 output size 167 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_75| input size 167 context size 167 output size 167: 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. [2022-11-03 02:14:24,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI --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 a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 --- 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-5e519f3 [2022-11-03 02:14:26,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:14:26,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:14:26,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:14:26,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:14:26,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:14:26,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:14:26,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:14:26,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:14:26,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:14:26,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:14:26,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:14:26,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:14:26,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:14:26,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:14:26,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:14:26,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:14:26,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:14:26,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:14:26,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:14:26,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:14:26,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:14:26,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:14:26,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:14:26,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:14:26,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:14:26,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:14:26,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:14:26,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:14:26,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:14:26,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:14:26,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:14:26,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:14:26,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:14:26,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:14:26,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:14:26,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:14:26,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:14:26,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:14:26,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:14:26,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:14:26,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 02:14:26,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:14:26,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:14:26,818 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:14:26,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:14:26,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:14:26,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:14:26,819 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:14:26,819 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:14:26,819 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:14:26,819 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:14:26,820 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:14:26,820 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:14:26,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:14:26,821 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:14:26,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:14:26,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:14:26,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:14:26,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:14:26,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:14:26,822 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:14:26,822 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:14:26,822 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:14:26,822 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:14:26,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:14:26,823 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:14:26,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:14:26,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:14:26,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:14:26,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:14:26,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:26,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:14:26,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:14:26,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:14:26,829 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:14:26,829 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:14:26,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:14:26,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:14:26,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:14:26,830 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_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 [2022-11-03 02:14:27,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:14:27,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:14:27,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:14:27,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:14:27,280 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:14:27,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2022-11-03 02:14:27,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/data/23d93d148/0100d7684cee40afab6019af63dbf5a2/FLAG91d6d7f6e [2022-11-03 02:14:28,081 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:14:28,082 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2022-11-03 02:14:28,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/data/23d93d148/0100d7684cee40afab6019af63dbf5a2/FLAG91d6d7f6e [2022-11-03 02:14:28,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/data/23d93d148/0100d7684cee40afab6019af63dbf5a2 [2022-11-03 02:14:28,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:14:28,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:14:28,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:28,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:14:28,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:14:28,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dfcf3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28, skipping insertion in model container [2022-11-03 02:14:28,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:14:28,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:14:28,731 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_d1773de8-c1ea-4fef-97e6-3b819b42fda7/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i[24177,24190] [2022-11-03 02:14:28,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:28,762 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:14:28,843 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_d1773de8-c1ea-4fef-97e6-3b819b42fda7/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i[24177,24190] [2022-11-03 02:14:28,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:28,883 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:14:28,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28 WrapperNode [2022-11-03 02:14:28,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:28,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:28,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:14:28,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:14:28,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,941 INFO L138 Inliner]: procedures = 129, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 106 [2022-11-03 02:14:28,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:28,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:14:28,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:14:28,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:14:28,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,975 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:14:28,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:14:28,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:14:28,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:14:28,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (1/1) ... [2022-11-03 02:14:28,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:29,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:29,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:14:29,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:14:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-11-03 02:14:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-11-03 02:14:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:14:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:14:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:14:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:14:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:14:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:14:29,270 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:14:29,273 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:14:29,761 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:14:29,767 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:14:29,768 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:14:29,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:14:29 BoogieIcfgContainer [2022-11-03 02:14:29,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:14:29,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:14:29,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:14:29,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:14:29,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:14:28" (1/3) ... [2022-11-03 02:14:29,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102c7a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:14:29, skipping insertion in model container [2022-11-03 02:14:29,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:28" (2/3) ... [2022-11-03 02:14:29,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102c7a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:14:29, skipping insertion in model container [2022-11-03 02:14:29,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:14:29" (3/3) ... [2022-11-03 02:14:29,786 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2022-11-03 02:14:29,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:14:29,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:14:29,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:14:29,907 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;@22f4ae73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:14:29,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:14:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:14:29,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:14:29,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:29,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:29,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1539835526, now seen corresponding path program 1 times [2022-11-03 02:14:29,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:29,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99924667] [2022-11-03 02:14:29,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:29,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:29,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:29,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:30,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:14:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:30,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:14:30,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:30,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:14:30,246 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:14:30,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99924667] [2022-11-03 02:14:30,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99924667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:30,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:30,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:14:30,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005687218] [2022-11-03 02:14:30,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:30,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:14:30,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:14:30,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:14:30,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:14:30,306 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:14:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:30,332 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-11-03 02:14:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:14:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-03 02:14:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:30,353 INFO L225 Difference]: With dead ends: 41 [2022-11-03 02:14:30,356 INFO L226 Difference]: Without dead ends: 24 [2022-11-03 02:14:30,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:14:30,365 INFO L413 NwaCegarLoop]: 33 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, 33 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 [2022-11-03 02:14:30,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:14:30,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-03 02:14:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-03 02:14:30,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:14:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-03 02:14:30,409 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2022-11-03 02:14:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:30,411 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-03 02:14:30,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:14:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-03 02:14:30,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:14:30,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:30,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:30,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:30,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:14:30,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:30,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:30,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1407777735, now seen corresponding path program 1 times [2022-11-03 02:14:30,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:30,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509813131] [2022-11-03 02:14:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:30,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:30,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:30,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:30,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:14:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:30,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:14:30,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:30,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:14:30,839 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:14:30,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509813131] [2022-11-03 02:14:30,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509813131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:30,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:30,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:30,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063034523] [2022-11-03 02:14:30,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:30,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:14:30,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:30,843 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:14:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:30,859 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2022-11-03 02:14:30,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:30,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-03 02:14:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:30,861 INFO L225 Difference]: With dead ends: 39 [2022-11-03 02:14:30,861 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:14:30,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:30,863 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:30,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 49 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:14:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:14:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2022-11-03 02:14:30,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:14:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-03 02:14:30,871 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2022-11-03 02:14:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:30,871 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-03 02:14:30,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:14:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-03 02:14:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:14:30,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:30,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:30,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:31,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:14:31,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:31,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:31,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1822611693, now seen corresponding path program 1 times [2022-11-03 02:14:31,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:31,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695678175] [2022-11-03 02:14:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:31,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:31,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:31,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:31,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:14:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:31,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:14:31,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:14:31,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:14:31,342 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:14:31,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695678175] [2022-11-03 02:14:31,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695678175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:31,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:31,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:14:31,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447044869] [2022-11-03 02:14:31,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:31,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:14:31,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:14:31,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:14:31,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:14:31,349 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:14:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:31,397 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-11-03 02:14:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:14:31,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-03 02:14:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:31,399 INFO L225 Difference]: With dead ends: 33 [2022-11-03 02:14:31,399 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:14:31,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:14:31,401 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:31,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:14:31,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:14:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-11-03 02:14:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:14:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-11-03 02:14:31,408 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 26 [2022-11-03 02:14:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:31,409 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-11-03 02:14:31,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:14:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-11-03 02:14:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:14:31,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:31,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:31,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:31,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:14:31,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:31,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:31,630 INFO L85 PathProgramCache]: Analyzing trace with hash -346016110, now seen corresponding path program 1 times [2022-11-03 02:14:31,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:31,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988652950] [2022-11-03 02:14:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:31,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:31,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:31,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:31,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:14:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:31,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 02:14:31,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:31,871 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 6 treesize of output 7 [2022-11-03 02:14:32,041 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 02:14:32,042 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 [2022-11-03 02:14:32,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:32,188 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 14 treesize of output 14 [2022-11-03 02:14:32,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 02:14:32,316 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:32,352 INFO L356 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2022-11-03 02:14:32,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 26 [2022-11-03 02:14:32,365 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 7 treesize of output 3 [2022-11-03 02:14:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:32,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:32,477 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 31 treesize of output 23 [2022-11-03 02:14:33,298 INFO L356 Elim1Store]: treesize reduction 49, result has 70.5 percent of original size [2022-11-03 02:14:33,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 1352 treesize of output 1303 [2022-11-03 02:14:33,507 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:33,508 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 1198 treesize of output 1114 [2022-11-03 02:14:33,576 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 1542 treesize of output 1470 [2022-11-03 02:14:35,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:36,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:36,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:36,040 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 47 treesize of output 43 [2022-11-03 02:14:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:36,447 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:14:36,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988652950] [2022-11-03 02:14:36,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988652950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:36,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1708755107] [2022-11-03 02:14:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:36,448 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:14:36,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:14:36,454 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:14:36,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-03 02:14:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:36,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:14:36,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:14:36,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:14:37,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1708755107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:37,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489804871] [2022-11-03 02:14:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:37,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:37,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:37,101 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:14:37,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:14:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:37,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:14:37,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:37,325 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 11 treesize of output 7 [2022-11-03 02:14:37,331 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 11 treesize of output 7 [2022-11-03 02:14:37,427 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 [2022-11-03 02:14:37,431 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 [2022-11-03 02:14:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:14:37,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:14:37,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489804871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:37,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-03 02:14:37,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 5, 5] total 32 [2022-11-03 02:14:37,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662598227] [2022-11-03 02:14:37,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:37,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:14:37,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:14:37,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:14:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=915, Unknown=0, NotChecked=0, Total=992 [2022-11-03 02:14:37,492 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:14:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:37,973 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-11-03 02:14:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:14:37,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-11-03 02:14:37,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:37,975 INFO L225 Difference]: With dead ends: 34 [2022-11-03 02:14:37,975 INFO L226 Difference]: Without dead ends: 30 [2022-11-03 02:14:37,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:14:37,977 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:37,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 83 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:14:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-03 02:14:37,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-11-03 02:14:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:14:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-03 02:14:37,988 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 30 [2022-11-03 02:14:37,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:37,988 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-03 02:14:37,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:14:37,989 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-03 02:14:37,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:14:37,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:37,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:38,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-11-03 02:14:38,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:38,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:38,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:14:38,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:38,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:38,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1428991252, now seen corresponding path program 1 times [2022-11-03 02:14:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:38,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312461898] [2022-11-03 02:14:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:38,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:38,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:38,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:38,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:14:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:38,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:14:38,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:14:38,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:14:38,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:14:38,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312461898] [2022-11-03 02:14:38,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312461898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:38,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [884136773] [2022-11-03 02:14:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:38,995 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:14:38,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:14:38,999 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:14:39,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-03 02:14:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:39,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:14:39,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:14:39,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:14:39,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [884136773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:39,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583014932] [2022-11-03 02:14:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:39,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:39,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:39,412 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:14:39,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:14:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:39,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:14:39,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 02:14:39,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 02:14:39,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583014932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:39,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:14:39,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-03 02:14:39,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072188968] [2022-11-03 02:14:39,732 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:14:39,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:14:39,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:14:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:14:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:14:39,734 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-03 02:14:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:39,854 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2022-11-03 02:14:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:14:39,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 30 [2022-11-03 02:14:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:39,855 INFO L225 Difference]: With dead ends: 49 [2022-11-03 02:14:39,855 INFO L226 Difference]: Without dead ends: 45 [2022-11-03 02:14:39,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:14:39,857 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 42 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:39,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 119 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:14:39,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-03 02:14:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2022-11-03 02:14:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:14:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-11-03 02:14:39,868 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 30 [2022-11-03 02:14:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:39,869 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-11-03 02:14:39,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-03 02:14:39,869 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-11-03 02:14:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 02:14:39,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:39,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:39,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:40,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-03 02:14:40,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:40,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:40,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:40,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1426632761, now seen corresponding path program 1 times [2022-11-03 02:14:40,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:40,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710279984] [2022-11-03 02:14:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:40,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:40,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:40,479 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:40,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:14:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:40,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 02:14:40,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:40,732 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 6 treesize of output 7 [2022-11-03 02:14:40,862 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 02:14:40,863 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 [2022-11-03 02:14:40,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:40,987 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 14 treesize of output 14 [2022-11-03 02:14:40,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 02:14:41,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:41,133 INFO L356 Elim1Store]: treesize reduction 15, result has 55.9 percent of original size [2022-11-03 02:14:41,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 32 [2022-11-03 02:14:41,140 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 23 treesize of output 15 [2022-11-03 02:14:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:14:41,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:41,240 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 31 treesize of output 23 [2022-11-03 02:14:41,953 INFO L356 Elim1Store]: treesize reduction 49, result has 70.5 percent of original size [2022-11-03 02:14:41,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 2695 treesize of output 2492 [2022-11-03 02:14:42,189 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:42,190 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 2359 treesize of output 2169 [2022-11-03 02:14:42,228 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 2961 treesize of output 2825 [2022-11-03 02:14:43,988 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-11-03 02:14:43,996 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 6 treesize of output 4 [2022-11-03 02:14:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:14:44,367 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:14:44,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710279984] [2022-11-03 02:14:44,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710279984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:44,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [443467892] [2022-11-03 02:14:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:14:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:14:44,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:14:44,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-03 02:14:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:44,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 02:14:44,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:44,742 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 6 treesize of output 7 [2022-11-03 02:14:44,896 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 02:14:44,897 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 [2022-11-03 02:14:45,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:45,114 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 14 treesize of output 14 [2022-11-03 02:14:45,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 02:14:45,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:45,279 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:45,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 17 [2022-11-03 02:14:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:14:45,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:45,306 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 31 treesize of output 23 [2022-11-03 02:14:45,937 INFO L356 Elim1Store]: treesize reduction 49, result has 70.5 percent of original size [2022-11-03 02:14:45,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 1519 treesize of output 1444 [2022-11-03 02:14:46,023 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 1771 treesize of output 1699 [2022-11-03 02:14:46,176 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:46,176 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 1545 treesize of output 1411 [2022-11-03 02:14:47,714 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 219 treesize of output 211 [2022-11-03 02:14:47,730 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 148 treesize of output 146 [2022-11-03 02:14:47,775 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 174 treesize of output 168 [2022-11-03 02:14:47,785 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 154 treesize of output 150 [2022-11-03 02:14:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:14:48,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [443467892] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:48,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65214236] [2022-11-03 02:14:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:48,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:48,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:48,044 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:14:48,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 02:14:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:48,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:14:48,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:48,243 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 6 treesize of output 7 [2022-11-03 02:14:48,305 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 02:14:48,305 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 [2022-11-03 02:14:48,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:48,342 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 14 treesize of output 14 [2022-11-03 02:14:48,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 02:14:48,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:48,398 INFO L356 Elim1Store]: treesize reduction 15, result has 55.9 percent of original size [2022-11-03 02:14:48,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 32 [2022-11-03 02:14:48,406 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 23 treesize of output 15 [2022-11-03 02:14:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:14:48,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:48,424 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 31 treesize of output 23 [2022-11-03 02:14:48,933 INFO L356 Elim1Store]: treesize reduction 49, result has 70.5 percent of original size [2022-11-03 02:14:48,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 1547 treesize of output 1444 [2022-11-03 02:14:49,031 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 1643 treesize of output 1591 [2022-11-03 02:14:49,122 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:49,123 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 1491 treesize of output 1365 [2022-11-03 02:14:50,498 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 6 treesize of output 4 [2022-11-03 02:14:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:14:50,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65214236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:50,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:14:50,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16, 15, 15, 15] total 32 [2022-11-03 02:14:50,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638051117] [2022-11-03 02:14:50,727 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:14:50,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 02:14:50,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:14:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 02:14:50,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2022-11-03 02:14:50,729 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 32 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 02:14:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:52,825 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-11-03 02:14:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:14:52,826 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 34 [2022-11-03 02:14:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:52,828 INFO L225 Difference]: With dead ends: 70 [2022-11-03 02:14:52,828 INFO L226 Difference]: Without dead ends: 59 [2022-11-03 02:14:52,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 163 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:14:52,829 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 96 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:52,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 274 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 315 Invalid, 0 Unknown, 62 Unchecked, 1.7s Time] [2022-11-03 02:14:52,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-03 02:14:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 44. [2022-11-03 02:14:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:14:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2022-11-03 02:14:52,840 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 34 [2022-11-03 02:14:52,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:52,841 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2022-11-03 02:14:52,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 02:14:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2022-11-03 02:14:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 02:14:52,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:52,842 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:52,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:53,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2022-11-03 02:14:53,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:53,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:53,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2127697339, now seen corresponding path program 2 times [2022-11-03 02:14:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:53,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892703512] [2022-11-03 02:14:53,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:14:53,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:53,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:53,461 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:53,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1773de8-c1ea-4fef-97e6-3b819b42fda7/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:14:54,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:14:54,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:14:54,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-03 02:14:54,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:54,517 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 11 treesize of output 7 [2022-11-03 02:14:54,524 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 11 treesize of output 7 [2022-11-03 02:14:55,110 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-03 02:14:55,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 76 [2022-11-03 02:14:55,182 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-03 02:14:55,182 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 2 case distinctions, treesize of input 96 treesize of output 65 [2022-11-03 02:14:55,262 INFO L356 Elim1Store]: treesize reduction 47, result has 27.7 percent of original size [2022-11-03 02:14:55,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 83 [2022-11-03 02:14:55,283 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 14 treesize of output 13 [2022-11-03 02:14:55,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-11-03 02:14:55,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:55,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 84 treesize of output 120 [2022-11-03 02:14:55,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:55,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:55,512 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2022-11-03 02:14:55,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:55,527 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 31 treesize of output 21 [2022-11-03 02:14:55,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:55,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:55,561 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2022-11-03 02:14:55,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2022-11-03 02:14:55,644 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 11 treesize of output 3 [2022-11-03 02:14:57,842 INFO L356 Elim1Store]: treesize reduction 834, result has 5.0 percent of original size [2022-11-03 02:14:57,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 29 case distinctions, treesize of input 667 treesize of output 302 [2022-11-03 02:14:58,546 INFO L356 Elim1Store]: treesize reduction 805, result has 7.6 percent of original size [2022-11-03 02:14:58,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 37 case distinctions, treesize of input 366 treesize of output 190 [2022-11-03 02:14:59,127 INFO L356 Elim1Store]: treesize reduction 124, result has 2.4 percent of original size [2022-11-03 02:14:59,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 91 [2022-11-03 02:14:59,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,169 INFO L356 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2022-11-03 02:14:59,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 27 [2022-11-03 02:14:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:14:59,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:15:54,790 WARN L234 SmtUtils]: Spent 10.56s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:59,261 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse17 (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (let ((.cse10 (let ((.cse62 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)))) (store .cse62 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (store (select .cse62 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse17 |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset|))))) (let ((.cse15 (select .cse10 |c_ULTIMATE.start_main_~#s~0#1.base|)) (.cse16 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)))) (and (forall ((|ULTIMATE.start_main_~#s~0#1.offset| (_ BitVec 32)) (v_ArrVal_995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1019 (_ BitVec 32)) (v_ArrVal_1018 (_ BitVec 32))) (let ((.cse5 (store .cse16 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse17 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) (let ((.cse14 (select .cse15 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse7 (select .cse5 .cse6)) (.cse8 (bvadd (_ bv4 32) .cse14))) (let ((.cse12 (select .cse7 .cse8))) (or (let ((.cse11 (select .cse10 .cse6))) (let ((.cse13 (bvadd (_ bv4 32) (select .cse11 .cse8)))) (let ((.cse3 (select (select .cse5 .cse12) .cse13)) (.cse4 (select (select .cse10 .cse12) .cse13))) (let ((.cse1 (let ((.cse9 (store .cse10 .cse6 (store .cse11 .cse8 .cse4)))) (store .cse9 .cse3 (store (select .cse9 .cse3) .cse4 v_ArrVal_1019))))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse0 (select (select .cse1 (select (select (let ((.cse2 (store .cse5 .cse6 (store .cse7 .cse8 .cse3)))) (store .cse2 .cse3 (store (select .cse2 .cse3) .cse4 v_ArrVal_1018))) |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv4 32) .cse0)))))))) (= .cse12 .cse6) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| .cse14)) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| .cse6)))))))) (forall ((|ULTIMATE.start_main_~#s~0#1.offset| (_ BitVec 32)) (v_ArrVal_995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1019 (_ BitVec 32)) (v_ArrVal_1018 (_ BitVec 32))) (let ((.cse27 (store .cse16 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse17 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) (let ((.cse32 (select .cse15 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse23 (select (select .cse27 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse24 (select .cse10 .cse23)) (.cse25 (bvadd (_ bv4 32) .cse32))) (let ((.cse31 (select .cse24 .cse25))) (or (let ((.cse28 (select .cse27 .cse23))) (let ((.cse29 (select .cse28 .cse25)) (.cse30 (bvadd (_ bv4 32) .cse31))) (let ((.cse22 (select (select .cse10 .cse29) .cse30)) (.cse21 (select (select .cse27 .cse29) .cse30))) (let ((.cse19 (let ((.cse26 (store .cse27 .cse23 (store .cse28 .cse25 .cse21)))) (store .cse26 .cse21 (store (select .cse26 .cse21) .cse22 v_ArrVal_1018))))) (let ((.cse18 (select (select .cse19 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse18 (select (select .cse19 .cse18) (bvadd (_ bv4 32) (select (select (let ((.cse20 (store .cse10 .cse23 (store .cse24 .cse25 .cse22)))) (store .cse20 .cse21 (store (select .cse20 .cse21) .cse22 v_ArrVal_1019))) |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))))))))) (= .cse32 .cse31) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| .cse32)) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| .cse23)))))))) (forall ((|ULTIMATE.start_main_~#s~0#1.offset| (_ BitVec 32)) (v_ArrVal_995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1019 (_ BitVec 32)) (v_ArrVal_1018 (_ BitVec 32))) (let ((.cse42 (store .cse16 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse17 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) (let ((.cse46 (select .cse15 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse38 (select (select .cse42 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse43 (select .cse42 .cse38)) (.cse40 (bvadd (_ bv4 32) .cse46))) (let ((.cse44 (select .cse43 .cse40))) (or (let ((.cse39 (select .cse10 .cse38))) (let ((.cse45 (bvadd (_ bv4 32) (select .cse39 .cse40)))) (let ((.cse37 (select (select .cse10 .cse44) .cse45)) (.cse36 (select (select .cse42 .cse44) .cse45))) (let ((.cse34 (let ((.cse41 (store .cse42 .cse38 (store .cse43 .cse40 .cse36)))) (store .cse41 .cse36 (store (select .cse41 .cse36) .cse37 v_ArrVal_1018))))) (let ((.cse33 (select (select .cse34 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse33 (select (select .cse34 .cse33) (bvadd (_ bv4 32) (select (select (let ((.cse35 (store .cse10 .cse38 (store .cse39 .cse40 .cse37)))) (store .cse35 .cse36 (store (select .cse35 .cse36) .cse37 v_ArrVal_1019))) |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))))))))) (= .cse44 .cse38) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| .cse46)) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| .cse38)))))))) (forall ((|ULTIMATE.start_main_~#s~0#1.offset| (_ BitVec 32)) (v_ArrVal_995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1019 (_ BitVec 32)) (v_ArrVal_1018 (_ BitVec 32))) (let ((.cse52 (store .cse16 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse17 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) (let ((.cse61 (select .cse15 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse53 (select (select .cse52 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse57 (select .cse10 .cse53)) (.cse55 (bvadd (_ bv4 32) .cse61))) (let ((.cse60 (select .cse57 .cse55))) (or (let ((.cse54 (select .cse52 .cse53))) (let ((.cse58 (select .cse54 .cse55)) (.cse59 (bvadd (_ bv4 32) .cse60))) (let ((.cse50 (select (select .cse52 .cse58) .cse59)) (.cse51 (select (select .cse10 .cse58) .cse59))) (let ((.cse48 (let ((.cse56 (store .cse10 .cse53 (store .cse57 .cse55 .cse51)))) (store .cse56 .cse50 (store (select .cse56 .cse50) .cse51 v_ArrVal_1019))))) (let ((.cse47 (select (select .cse48 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse47 (select (select .cse48 (select (select (let ((.cse49 (store .cse52 .cse53 (store .cse54 .cse55 .cse50)))) (store .cse49 .cse50 (store (select .cse49 .cse50) .cse51 v_ArrVal_1018))) |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv4 32) .cse47)))))))) (= .cse61 .cse60) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| .cse61)) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| .cse53)))))))))))) is different from true [2022-11-03 02:16:04,845 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse18 (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) (let ((.cse8 (let ((.cse62 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)))) (store .cse62 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select .cse62 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse18 |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset|))))) (let ((.cse16 (select .cse8 |c_ULTIMATE.start_main_~#s~0#1.base|)) (.cse17 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)))) (and (forall ((|ULTIMATE.start_main_~#s~0#1.offset| (_ BitVec 32)) (v_ArrVal_995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1019 (_ BitVec 32)) (v_ArrVal_1018 (_ BitVec 32))) (let ((.cse12 (store .cse17 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse18 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) (let ((.cse1 (select .cse16 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (select (select .cse12 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse9 (select .cse8 .cse2)) (.cse10 (bvadd (_ bv4 32) .cse1))) (let ((.cse0 (select .cse9 .cse10))) (or (= .cse0 .cse1) (not (= .cse2 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| .cse1)) (let ((.cse13 (select .cse12 .cse2))) (let ((.cse14 (select .cse13 .cse10)) (.cse15 (bvadd (_ bv4 32) .cse0))) (let ((.cse7 (select (select .cse8 .cse14) .cse15)) (.cse6 (select (select .cse12 .cse14) .cse15))) (let ((.cse3 (let ((.cse11 (store .cse12 .cse2 (store .cse13 .cse10 .cse6)))) (store .cse11 .cse6 (store (select .cse11 .cse6) .cse7 v_ArrVal_1018))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select .cse3 .cse4) (bvadd (_ bv4 32) (select (select (let ((.cse5 (store .cse8 .cse2 (store .cse9 .cse10 .cse7)))) (store .cse5 .cse6 (store (select .cse5 .cse6) .cse7 v_ArrVal_1019))) |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) .cse4)))))))))))) (forall ((|ULTIMATE.start_main_~#s~0#1.offset| (_ BitVec 32)) (v_ArrVal_995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1019 (_ BitVec 32)) (v_ArrVal_1018 (_ BitVec 32))) (let ((.cse25 (store .cse17 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse18 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) (let ((.cse32 (select .cse16 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse19 (select (select .cse25 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse26 (select .cse25 .cse19)) (.cse27 (bvadd (_ bv4 32) .cse32))) (let ((.cse20 (select .cse26 .cse27))) (or (not (= .cse19 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (= .cse20 .cse19) (let ((.cse30 (select .cse8 .cse19))) (let ((.cse31 (bvadd (_ bv4 32) (select .cse30 .cse27)))) (let ((.cse23 (select (select .cse25 .cse20) .cse31)) (.cse24 (select (select .cse8 .cse20) .cse31))) (let ((.cse21 (let ((.cse29 (store .cse8 .cse19 (store .cse30 .cse27 .cse24)))) (store .cse29 .cse23 (store (select .cse29 .cse23) .cse24 v_ArrVal_1019))))) (let ((.cse28 (select (select .cse21 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select .cse21 (select (select (let ((.cse22 (store .cse25 .cse19 (store .cse26 .cse27 .cse23)))) (store .cse22 .cse23 (store (select .cse22 .cse23) .cse24 v_ArrVal_1018))) |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv4 32) .cse28)) .cse28)))))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| .cse32)))))))) (forall ((|ULTIMATE.start_main_~#s~0#1.offset| (_ BitVec 32)) (v_ArrVal_995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1019 (_ BitVec 32)) (v_ArrVal_1018 (_ BitVec 32))) (let ((.cse44 (store .cse17 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse18 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) (let ((.cse35 (select .cse16 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse33 (select (select .cse44 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse45 (select .cse44 .cse33)) (.cse42 (bvadd (_ bv4 32) .cse35))) (let ((.cse34 (select .cse45 .cse42))) (or (not (= .cse33 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (= .cse34 .cse33) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| .cse35)) (let ((.cse41 (select .cse8 .cse33))) (let ((.cse46 (bvadd (_ bv4 32) (select .cse41 .cse42)))) (let ((.cse40 (select (select .cse8 .cse34) .cse46)) (.cse39 (select (select .cse44 .cse34) .cse46))) (let ((.cse36 (let ((.cse43 (store .cse44 .cse33 (store .cse45 .cse42 .cse39)))) (store .cse43 .cse39 (store (select .cse43 .cse39) .cse40 v_ArrVal_1018))))) (let ((.cse37 (select (select .cse36 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select .cse36 .cse37) (bvadd (_ bv4 32) (select (select (let ((.cse38 (store .cse8 .cse33 (store .cse41 .cse42 .cse40)))) (store .cse38 .cse39 (store (select .cse38 .cse39) .cse40 v_ArrVal_1019))) |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) .cse37)))))))))))) (forall ((|ULTIMATE.start_main_~#s~0#1.offset| (_ BitVec 32)) (v_ArrVal_995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1019 (_ BitVec 32)) (v_ArrVal_1018 (_ BitVec 32))) (let ((.cse54 (store .cse17 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) .cse18 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) (let ((.cse48 (select .cse16 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse49 (select (select .cse54 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse59 (select .cse8 .cse49)) (.cse56 (bvadd (_ bv4 32) .cse48))) (let ((.cse47 (select .cse59 .cse56))) (or (= .cse47 .cse48) (not (= .cse49 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (let ((.cse55 (select .cse54 .cse49))) (let ((.cse60 (select .cse55 .cse56)) (.cse61 (bvadd (_ bv4 32) .cse47))) (let ((.cse52 (select (select .cse54 .cse60) .cse61)) (.cse53 (select (select .cse8 .cse60) .cse61))) (let ((.cse50 (let ((.cse58 (store .cse8 .cse49 (store .cse59 .cse56 .cse53)))) (store .cse58 .cse52 (store (select .cse58 .cse52) .cse53 v_ArrVal_1019))))) (let ((.cse57 (select (select .cse50 |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select .cse50 (select (select (let ((.cse51 (store .cse54 .cse49 (store .cse55 .cse56 .cse52)))) (store .cse51 .cse52 (store (select .cse51 .cse52) .cse53 v_ArrVal_1018))) |c_ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv4 32) .cse57)) .cse57)))))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| .cse48)))))))))))) is different from false [2022-11-03 02:16:06,026 INFO L356 Elim1Store]: treesize reduction 31, result has 48.3 percent of original size [2022-11-03 02:16:06,026 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 3 case distinctions, treesize of input 11769 treesize of output 8320 [2022-11-03 02:16:06,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:08,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:09,105 INFO L244 Elim1Store]: Index analysis took 338 ms