./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_insert_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V --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 93d1510274ba16ddd1276e8e93ff0a644bf6fb4a262c4c9dde32fe8591d5ce8c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:07:40,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:07:40,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:07:40,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:07:40,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:07:40,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:07:40,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:07:40,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:07:40,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:07:40,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:07:40,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:07:40,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:07:40,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:07:40,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:07:40,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:07:40,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:07:40,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:07:40,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:07:40,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:07:40,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:07:40,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:07:40,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:07:40,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:07:40,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:07:40,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:07:40,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:07:40,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:07:40,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:07:40,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:07:40,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:07:40,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:07:40,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:07:40,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:07:40,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:07:40,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:07:40,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:07:40,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:07:40,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:07:40,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:07:40,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:07:40,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:07:40,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:07:41,024 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:07:41,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:07:41,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:07:41,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:07:41,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:07:41,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:07:41,026 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:07:41,027 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:07:41,027 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:07:41,027 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:07:41,028 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:07:41,029 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:07:41,029 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:07:41,029 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:07:41,029 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:07:41,030 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:07:41,030 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:07:41,030 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:07:41,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:07:41,032 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:07:41,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:07:41,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:07:41,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:07:41,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:07:41,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:07:41,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:07:41,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:07:41,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:07:41,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:07:41,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:07:41,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:07:41,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:07:41,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:07:41,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:07:41,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:07:41,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:07:41,038 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:07:41,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:07:41,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:07:41,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:07:41,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:07:41,039 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93d1510274ba16ddd1276e8e93ff0a644bf6fb4a262c4c9dde32fe8591d5ce8c [2021-11-23 03:07:41,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:07:41,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:07:41,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:07:41,373 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:07:41,374 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:07:41,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/list-simple/dll2n_insert_equal.i [2021-11-23 03:07:41,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/data/b04f1d311/1a7ef9e7148345d785020944acb67624/FLAG68db77eac [2021-11-23 03:07:42,088 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:07:42,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/sv-benchmarks/c/list-simple/dll2n_insert_equal.i [2021-11-23 03:07:42,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/data/b04f1d311/1a7ef9e7148345d785020944acb67624/FLAG68db77eac [2021-11-23 03:07:42,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/data/b04f1d311/1a7ef9e7148345d785020944acb67624 [2021-11-23 03:07:42,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:07:42,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:07:42,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:07:42,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:07:42,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:07:42,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426ae78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42, skipping insertion in model container [2021-11-23 03:07:42,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:07:42,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:07:42,782 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_6549054a-de1d-4f3a-906d-a426b1012780/sv-benchmarks/c/list-simple/dll2n_insert_equal.i[24706,24719] [2021-11-23 03:07:42,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:07:42,805 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:07:42,874 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_6549054a-de1d-4f3a-906d-a426b1012780/sv-benchmarks/c/list-simple/dll2n_insert_equal.i[24706,24719] [2021-11-23 03:07:42,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:07:42,903 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:07:42,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42 WrapperNode [2021-11-23 03:07:42,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:07:42,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:07:42,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:07:42,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:07:42,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,968 INFO L137 Inliner]: procedures = 127, calls = 44, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 136 [2021-11-23 03:07:42,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:07:42,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:07:42,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:07:42,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:07:42,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:42,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:07:43,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:07:43,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:07:43,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:07:43,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (1/1) ... [2021-11-23 03:07:43,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:07:43,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:07:43,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:07:43,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:07:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-23 03:07:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-23 03:07:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:07:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:07:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:07:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:07:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:07:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:07:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:07:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:07:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:07:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:07:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:07:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:07:43,203 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:07:43,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:07:43,244 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-23 03:07:43,536 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:07:43,710 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:07:43,711 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 03:07:43,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:07:43 BoogieIcfgContainer [2021-11-23 03:07:43,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:07:43,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:07:43,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:07:43,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:07:43,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:07:42" (1/3) ... [2021-11-23 03:07:43,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f406307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:07:43, skipping insertion in model container [2021-11-23 03:07:43,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:42" (2/3) ... [2021-11-23 03:07:43,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f406307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:07:43, skipping insertion in model container [2021-11-23 03:07:43,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:07:43" (3/3) ... [2021-11-23 03:07:43,725 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_insert_equal.i [2021-11-23 03:07:43,731 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:07:43,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:07:43,797 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:07:43,807 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:07:43,807 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:07:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 15 states have (on average 1.6) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:07:43,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:43,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:43,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:43,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:43,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2126926048, now seen corresponding path program 1 times [2021-11-23 03:07:43,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:43,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005623640] [2021-11-23 03:07:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:43,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:44,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:44,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005623640] [2021-11-23 03:07:44,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005623640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:44,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:44,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:07:44,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890649939] [2021-11-23 03:07:44,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:44,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:07:44,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:44,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:07:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:44,133 INFO L87 Difference]: Start difference. First operand has 19 states, 15 states have (on average 1.6) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:44,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:44,292 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2021-11-23 03:07:44,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:07:44,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 03:07:44,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:44,301 INFO L225 Difference]: With dead ends: 37 [2021-11-23 03:07:44,301 INFO L226 Difference]: Without dead ends: 15 [2021-11-23 03:07:44,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:44,309 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:44,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:07:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-23 03:07:44,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-11-23 03:07:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-11-23 03:07:44,345 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2021-11-23 03:07:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:44,346 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-11-23 03:07:44,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:44,347 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-11-23 03:07:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:07:44,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:44,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:44,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:07:44,349 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash -177876721, now seen corresponding path program 1 times [2021-11-23 03:07:44,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:44,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111278550] [2021-11-23 03:07:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:44,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:44,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:44,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111278550] [2021-11-23 03:07:44,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111278550] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:07:44,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922968914] [2021-11-23 03:07:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:44,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:07:44,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:07:44,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:07:44,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:07:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:44,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:07:44,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:07:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:44,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:07:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:44,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922968914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:07:44,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [749628044] [2021-11-23 03:07:44,718 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 03:07:44,718 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:07:44,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:07:44,728 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:07:44,728 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:07:44,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:44,831 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 03:07:44,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 26 [2021-11-23 03:07:44,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:44,868 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 03:07:44,869 INFO L388 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 [2021-11-23 03:07:44,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:44,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:44,976 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 03:07:44,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 03:07:45,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-23 03:07:45,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 47 [2021-11-23 03:07:45,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-23 03:07:45,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2021-11-23 03:07:45,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:45,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2021-11-23 03:07:45,493 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-11-23 03:07:45,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 286 treesize of output 295 [2021-11-23 03:07:45,610 INFO L354 Elim1Store]: treesize reduction 132, result has 20.0 percent of original size [2021-11-23 03:07:45,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 292 treesize of output 308 [2021-11-23 03:07:46,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,235 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-23 03:07:46,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 500 treesize of output 486 [2021-11-23 03:07:46,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,281 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 03:07:46,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 485 treesize of output 470 [2021-11-23 03:07:46,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,316 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:07:46,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 466 treesize of output 457 [2021-11-23 03:07:46,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:46,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:46,490 INFO L354 Elim1Store]: treesize reduction 187, result has 17.6 percent of original size [2021-11-23 03:07:46,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 451 treesize of output 454 [2021-11-23 03:07:46,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,538 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:07:46,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 587 treesize of output 578 [2021-11-23 03:07:46,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:46,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:46,653 INFO L354 Elim1Store]: treesize reduction 301, result has 16.2 percent of original size [2021-11-23 03:07:46,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 572 treesize of output 575 [2021-11-23 03:07:46,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 356 [2021-11-23 03:07:46,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:46,985 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-23 03:07:46,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 394 treesize of output 349 [2021-11-23 03:07:47,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 29 [2021-11-23 03:07:47,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:47,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:47,276 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 03:07:47,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 29 [2021-11-23 03:07:47,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:47,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:47,421 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-23 03:07:47,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 466 treesize of output 382 [2021-11-23 03:07:47,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:07:47,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:07:47,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,753 INFO L354 Elim1Store]: treesize reduction 92, result has 24.6 percent of original size [2021-11-23 03:07:47,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 233 [2021-11-23 03:07:47,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,833 INFO L354 Elim1Store]: treesize reduction 132, result has 16.5 percent of original size [2021-11-23 03:07:47,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 275 treesize of output 264 [2021-11-23 03:07:47,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 306 treesize of output 291 [2021-11-23 03:07:47,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,893 INFO L388 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 291 treesize of output 275 [2021-11-23 03:07:47,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,955 INFO L388 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 57 treesize of output 11 [2021-11-23 03:07:47,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:47,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 20 [2021-11-23 03:07:48,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 23 [2021-11-23 03:07:48,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:48,072 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:07:48,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 33 [2021-11-23 03:07:48,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 117 treesize of output 71 [2021-11-23 03:07:48,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:07:48,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:07:48,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:48,301 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 03:07:48,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 03:07:48,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:48,353 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 03:07:48,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 03:07:48,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:48,402 INFO L388 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 [2021-11-23 03:07:48,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:48,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:48,492 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:48,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:07:48,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:07:48,545 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:07:49,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [749628044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:49,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:07:49,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 8 [2021-11-23 03:07:49,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809737563] [2021-11-23 03:07:49,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:49,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:07:49,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:49,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:07:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:07:49,390 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:49,892 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2021-11-23 03:07:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:07:49,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 03:07:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:49,893 INFO L225 Difference]: With dead ends: 19 [2021-11-23 03:07:49,893 INFO L226 Difference]: Without dead ends: 14 [2021-11-23 03:07:49,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:07:49,895 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:49,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:07:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-23 03:07:49,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-23 03:07:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-11-23 03:07:49,900 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 11 [2021-11-23 03:07:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:49,900 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-23 03:07:49,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:49,901 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-11-23 03:07:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:07:49,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:49,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:49,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:07:50,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:07:50,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:50,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1298275819, now seen corresponding path program 1 times [2021-11-23 03:07:50,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:50,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98929567] [2021-11-23 03:07:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:50,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:07:50,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:50,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98929567] [2021-11-23 03:07:50,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98929567] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:07:50,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760159571] [2021-11-23 03:07:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:50,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:07:50,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:07:50,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:07:50,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:07:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:50,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:07:50,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:07:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:07:50,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:07:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:07:50,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760159571] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:07:50,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [129142024] [2021-11-23 03:07:50,352 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 03:07:50,352 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:07:50,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:07:50,353 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:07:50,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:07:50,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,385 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 03:07:50,386 INFO L388 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 [2021-11-23 03:07:50,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,396 INFO L388 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 [2021-11-23 03:07:50,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,450 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 03:07:50,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 03:07:50,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-23 03:07:50,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2021-11-23 03:07:50,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2021-11-23 03:07:50,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 47 [2021-11-23 03:07:50,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:50,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-23 03:07:50,717 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-11-23 03:07:50,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 286 treesize of output 295 [2021-11-23 03:07:50,801 INFO L354 Elim1Store]: treesize reduction 132, result has 20.0 percent of original size [2021-11-23 03:07:50,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 292 treesize of output 308 [2021-11-23 03:07:51,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,256 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-23 03:07:51,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 500 treesize of output 486 [2021-11-23 03:07:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,293 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 03:07:51,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 485 treesize of output 470 [2021-11-23 03:07:51,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,321 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:07:51,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 466 treesize of output 457 [2021-11-23 03:07:51,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:51,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:51,445 INFO L354 Elim1Store]: treesize reduction 187, result has 17.6 percent of original size [2021-11-23 03:07:51,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 451 treesize of output 454 [2021-11-23 03:07:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,477 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:07:51,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 509 treesize of output 500 [2021-11-23 03:07:51,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:51,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:51,577 INFO L354 Elim1Store]: treesize reduction 247, result has 13.9 percent of original size [2021-11-23 03:07:51,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 494 treesize of output 497 [2021-11-23 03:07:51,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 47 [2021-11-23 03:07:51,715 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:51,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 29 [2021-11-23 03:07:51,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 29 [2021-11-23 03:07:51,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:51,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:51,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:52,000 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 03:07:52,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 249 treesize of output 124 [2021-11-23 03:07:52,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 62 [2021-11-23 03:07:52,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:07:52,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:07:52,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,317 INFO L354 Elim1Store]: treesize reduction 92, result has 24.6 percent of original size [2021-11-23 03:07:52,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 233 [2021-11-23 03:07:52,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,386 INFO L354 Elim1Store]: treesize reduction 132, result has 16.5 percent of original size [2021-11-23 03:07:52,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 275 treesize of output 264 [2021-11-23 03:07:52,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 306 treesize of output 291 [2021-11-23 03:07:52,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,450 INFO L388 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 291 treesize of output 275 [2021-11-23 03:07:52,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,511 INFO L388 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 57 treesize of output 11 [2021-11-23 03:07:52,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 20 [2021-11-23 03:07:52,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 23 [2021-11-23 03:07:52,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:52,636 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:07:52,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 29 [2021-11-23 03:07:52,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,681 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:07:52,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 29 [2021-11-23 03:07:52,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 117 treesize of output 71 [2021-11-23 03:07:52,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 117 treesize of output 71 [2021-11-23 03:07:52,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:07:52,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:07:52,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:52,907 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 03:07:52,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 03:07:52,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,945 INFO L388 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 [2021-11-23 03:07:52,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:52,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:52,988 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 03:07:52,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 03:07:53,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:53,558 INFO L354 Elim1Store]: treesize reduction 255, result has 19.3 percent of original size [2021-11-23 03:07:53,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 340 treesize of output 312 [2021-11-23 03:07:53,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:53,792 INFO L354 Elim1Store]: treesize reduction 227, result has 28.2 percent of original size [2021-11-23 03:07:53,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 312 treesize of output 312 [2021-11-23 03:07:53,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:53,945 INFO L354 Elim1Store]: treesize reduction 68, result has 27.7 percent of original size [2021-11-23 03:07:53,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 299 treesize of output 290 [2021-11-23 03:07:54,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 03:07:54,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,091 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-23 03:07:54,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 40 [2021-11-23 03:07:54,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,204 INFO L354 Elim1Store]: treesize reduction 26, result has 46.9 percent of original size [2021-11-23 03:07:54,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 62 [2021-11-23 03:07:54,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 03:07:54,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 03:07:54,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,472 INFO L354 Elim1Store]: treesize reduction 22, result has 33.3 percent of original size [2021-11-23 03:07:54,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 21 [2021-11-23 03:07:54,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,537 INFO L354 Elim1Store]: treesize reduction 5, result has 68.8 percent of original size [2021-11-23 03:07:54,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 21 [2021-11-23 03:07:54,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 03:07:54,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 03:07:54,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:54,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-23 03:07:54,890 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:54,927 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:54,954 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:55,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:55,048 INFO L354 Elim1Store]: treesize reduction 49, result has 14.0 percent of original size [2021-11-23 03:07:55,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 03:07:55,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:55,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:55,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:55,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 10 [2021-11-23 03:07:55,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:55,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:55,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:55,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-11-23 03:07:55,191 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,215 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:55,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:55,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:55,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-11-23 03:07:55,542 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,612 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:55,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:55,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-23 03:07:55,733 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,835 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,883 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,904 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:55,933 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:56,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:56,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 03:07:56,232 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:56,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:56,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 03:07:56,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:56,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 03:07:56,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,382 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:07:56,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 03:07:56,412 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:56,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:07:56,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 03:07:56,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 03:07:56,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-23 03:07:56,597 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:56,624 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:56,643 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 03:07:56,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:56,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,020 INFO L354 Elim1Store]: treesize reduction 106, result has 29.8 percent of original size [2021-11-23 03:07:57,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 363 treesize of output 347 [2021-11-23 03:07:57,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,185 INFO L354 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2021-11-23 03:07:57,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 309 treesize of output 297 [2021-11-23 03:07:57,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 361 treesize of output 342 [2021-11-23 03:07:57,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 1 [2021-11-23 03:07:57,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:07:57,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,470 INFO L354 Elim1Store]: treesize reduction 94, result has 33.8 percent of original size [2021-11-23 03:07:57,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 250 treesize of output 277 [2021-11-23 03:07:57,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,577 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:07:57,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 40 [2021-11-23 03:07:57,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,643 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:07:57,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 44 [2021-11-23 03:07:57,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,677 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:07:57,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 114 [2021-11-23 03:07:57,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,728 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:07:57,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 203 treesize of output 159 [2021-11-23 03:07:57,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,771 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:07:57,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 105 [2021-11-23 03:07:57,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:07:57,851 INFO L354 Elim1Store]: treesize reduction 96, result has 27.3 percent of original size [2021-11-23 03:07:57,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 229 treesize of output 179 [2021-11-23 03:07:58,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:07:58,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:07:58,383 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:08:01,406 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '292#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 1 |ULTIMATE.start_node_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) (<= 1 |ULTIMATE.start_node_create_#in~data#1|) (<= 1 |ULTIMATE.start_dll_insert_~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_dll_insert_#in~data#1|) (or (and (or (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| 0) (or (and (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|))) (= |ULTIMATE.start_dll_insert_~last~0#1.base| 0)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (or (and (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 4)) (= |ULTIMATE.start_dll_insert_~last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))))) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| 0) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.base| 0)) (and (not (= |ULTIMATE.start_dll_insert_~last~0#1.base| 0)) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_insert_~last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (or (and (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (and (= (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)))) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)))) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (or (and (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (and (= (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)))) (= |ULTIMATE.start_dll_insert_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (or (and (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 4)) (= |ULTIMATE.start_dll_insert_~last~0#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (= |ULTIMATE.start_dll_insert_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)))))) (or (not (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| 0)) (not (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| 0)))) (and (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| 0) (or (and (or (and (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) 8))) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (and (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) 0))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| 0))) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= |ULTIMATE.start_node_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_insert_~data#1| 1) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_node_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 1))' at error location [2021-11-23 03:08:01,406 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:08:01,406 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:08:01,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2021-11-23 03:08:01,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150427921] [2021-11-23 03:08:01,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:08:01,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:08:01,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:01,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:08:01,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:08:01,409 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:01,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:01,645 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2021-11-23 03:08:01,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:08:01,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 03:08:01,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:01,646 INFO L225 Difference]: With dead ends: 26 [2021-11-23 03:08:01,646 INFO L226 Difference]: Without dead ends: 17 [2021-11-23 03:08:01,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:08:01,648 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:01,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:08:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-23 03:08:01,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-23 03:08:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-23 03:08:01,654 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2021-11-23 03:08:01,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:01,655 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-23 03:08:01,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-23 03:08:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:08:01,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:01,655 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:01,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:08:01,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:08:01,856 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:01,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash 251229316, now seen corresponding path program 2 times [2021-11-23 03:08:01,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:01,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525228540] [2021-11-23 03:08:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:01,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:08:02,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:02,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525228540] [2021-11-23 03:08:02,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525228540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:08:02,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436334202] [2021-11-23 03:08:02,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:08:02,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:08:02,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:08:02,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:08:02,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:08:02,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 03:08:02,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:08:02,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-23 03:08:02,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:08:03,085 INFO L388 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 15 [2021-11-23 03:08:11,493 WARN L227 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 114 DAG size of output: 67 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:08:11,494 INFO L354 Elim1Store]: treesize reduction 456, result has 26.5 percent of original size [2021-11-23 03:08:11,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 923 treesize of output 798 [2021-11-23 03:08:14,111 INFO L354 Elim1Store]: treesize reduction 450, result has 36.5 percent of original size [2021-11-23 03:08:14,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 1079 treesize of output 1025 [2021-11-23 03:08:14,175 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-23 03:08:14,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1946350864] [2021-11-23 03:08:14,177 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 03:08:14,178 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:08:14,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:08:14,178 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:08:14,179 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:08:14,193 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@734d8 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:388) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) 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:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.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.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) 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.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 03:08:14,196 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:08:14,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-23 03:08:14,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543366819] [2021-11-23 03:08:14,197 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 03:08:14,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:08:14,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:14,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:08:14,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:08:14,199 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:08:14,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:08:14,200 INFO L933 BasicCegarLoop]: 0 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, 0 SdHoareTripleChecker+Invalid, 1 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 [2021-11-23 03:08:14,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:08:14,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:08:14,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:08:14,418 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@734d8 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 03:08:14,420 INFO L158 Benchmark]: Toolchain (without parser) took 32065.17ms. Allocated memory was 100.7MB in the beginning and 272.6MB in the end (delta: 172.0MB). Free memory was 64.7MB in the beginning and 196.3MB in the end (delta: -131.6MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2021-11-23 03:08:14,420 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:08:14,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.08ms. Allocated memory is still 100.7MB. Free memory was 64.5MB in the beginning and 67.1MB in the end (delta: -2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:08:14,421 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.44ms. Allocated memory is still 100.7MB. Free memory was 66.7MB in the beginning and 64.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:08:14,421 INFO L158 Benchmark]: Boogie Preprocessor took 30.20ms. Allocated memory is still 100.7MB. Free memory was 64.6MB in the beginning and 62.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:08:14,422 INFO L158 Benchmark]: RCFGBuilder took 714.34ms. Allocated memory is still 100.7MB. Free memory was 62.9MB in the beginning and 73.6MB in the end (delta: -10.7MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2021-11-23 03:08:14,422 INFO L158 Benchmark]: TraceAbstraction took 30704.01ms. Allocated memory was 100.7MB in the beginning and 272.6MB in the end (delta: 172.0MB). Free memory was 73.3MB in the beginning and 196.3MB in the end (delta: -123.0MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. [2021-11-23 03:08:14,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 546.08ms. Allocated memory is still 100.7MB. Free memory was 64.5MB in the beginning and 67.1MB in the end (delta: -2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.44ms. Allocated memory is still 100.7MB. Free memory was 66.7MB in the beginning and 64.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.20ms. Allocated memory is still 100.7MB. Free memory was 64.6MB in the beginning and 62.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 714.34ms. Allocated memory is still 100.7MB. Free memory was 62.9MB in the beginning and 73.6MB in the end (delta: -10.7MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * TraceAbstraction took 30704.01ms. Allocated memory was 100.7MB in the beginning and 272.6MB in the end (delta: 172.0MB). Free memory was 73.3MB in the beginning and 196.3MB in the end (delta: -123.0MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@734d8 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@734d8: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 03:08:14,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V --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 93d1510274ba16ddd1276e8e93ff0a644bf6fb4a262c4c9dde32fe8591d5ce8c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:08:16,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:08:16,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:08:16,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:08:16,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:08:16,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:08:16,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:08:16,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:08:16,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:08:16,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:08:16,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:08:16,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:08:16,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:08:16,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:08:16,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:08:16,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:08:16,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:08:16,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:08:16,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:08:16,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:08:16,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:08:16,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:08:16,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:08:16,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:08:16,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:08:16,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:08:16,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:08:16,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:08:16,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:08:16,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:08:16,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:08:16,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:08:16,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:08:16,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:08:16,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:08:16,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:08:16,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:08:16,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:08:16,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:08:16,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:08:16,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:08:16,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 03:08:17,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:08:17,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:08:17,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:08:17,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:08:17,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:08:17,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:08:17,041 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:08:17,041 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:08:17,042 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:08:17,042 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:08:17,043 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:08:17,043 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:08:17,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:08:17,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:08:17,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:08:17,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:08:17,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:08:17,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:08:17,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:08:17,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:08:17,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:08:17,047 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:08:17,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:08:17,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:08:17,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:08:17,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:08:17,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:08:17,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:08:17,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:08:17,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:08:17,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:08:17,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:08:17,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:08:17,051 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:08:17,051 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:08:17,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:08:17,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:08:17,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:08:17,052 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_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93d1510274ba16ddd1276e8e93ff0a644bf6fb4a262c4c9dde32fe8591d5ce8c [2021-11-23 03:08:17,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:08:17,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:08:17,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:08:17,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:08:17,544 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:08:17,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/list-simple/dll2n_insert_equal.i [2021-11-23 03:08:17,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/data/e818fe676/9b589f60d3544a07a7a5a8a58239c211/FLAGe4e4cef2e [2021-11-23 03:08:18,271 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:08:18,272 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/sv-benchmarks/c/list-simple/dll2n_insert_equal.i [2021-11-23 03:08:18,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/data/e818fe676/9b589f60d3544a07a7a5a8a58239c211/FLAGe4e4cef2e [2021-11-23 03:08:18,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/data/e818fe676/9b589f60d3544a07a7a5a8a58239c211 [2021-11-23 03:08:18,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:08:18,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:08:18,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:08:18,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:08:18,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:08:18,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:18" (1/1) ... [2021-11-23 03:08:18,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e27d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18, skipping insertion in model container [2021-11-23 03:08:18,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:18" (1/1) ... [2021-11-23 03:08:18,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:08:18,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:08:18,942 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_6549054a-de1d-4f3a-906d-a426b1012780/sv-benchmarks/c/list-simple/dll2n_insert_equal.i[24706,24719] [2021-11-23 03:08:18,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:08:18,956 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:08:18,998 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_6549054a-de1d-4f3a-906d-a426b1012780/sv-benchmarks/c/list-simple/dll2n_insert_equal.i[24706,24719] [2021-11-23 03:08:18,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:08:19,040 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:08:19,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19 WrapperNode [2021-11-23 03:08:19,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:08:19,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:08:19,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:08:19,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:08:19,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2021-11-23 03:08:19,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2021-11-23 03:08:19,128 INFO L137 Inliner]: procedures = 130, calls = 44, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2021-11-23 03:08:19,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:08:19,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:08:19,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:08:19,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:08:19,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2021-11-23 03:08:19,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2021-11-23 03:08:19,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2021-11-23 03:08:19,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2021-11-23 03:08:19,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2021-11-23 03:08:19,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2021-11-23 03:08:19,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2021-11-23 03:08:19,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:08:19,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:08:19,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:08:19,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:08:19,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (1/1) ... [2021-11-23 03:08:19,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:08:19,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:08:19,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:08:19,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:08:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-23 03:08:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-23 03:08:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 03:08:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:08:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:08:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:08:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:08:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:08:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:08:19,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 03:08:19,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:08:19,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:08:19,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:08:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:08:19,495 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:08:19,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:08:19,570 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-23 03:08:19,977 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:08:19,984 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:08:19,984 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 03:08:19,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:19 BoogieIcfgContainer [2021-11-23 03:08:19,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:08:19,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:08:19,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:08:19,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:08:19,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:08:18" (1/3) ... [2021-11-23 03:08:19,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73812184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:19, skipping insertion in model container [2021-11-23 03:08:19,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:19" (2/3) ... [2021-11-23 03:08:19,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73812184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:19, skipping insertion in model container [2021-11-23 03:08:19,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:19" (3/3) ... [2021-11-23 03:08:19,996 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_insert_equal.i [2021-11-23 03:08:20,001 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:08:20,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:08:20,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:08:20,062 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:08:20,062 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:08:20,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 30 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:20,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:08:20,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:20,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:20,085 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:20,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash -504257564, now seen corresponding path program 1 times [2021-11-23 03:08:20,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:08:20,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912424043] [2021-11-23 03:08:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:20,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:08:20,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:08:20,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:08:20,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:08:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:20,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 03:08:20,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:08:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:08:20,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:08:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:08:20,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:08:20,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912424043] [2021-11-23 03:08:20,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912424043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:20,365 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:20,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:08:20,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64600221] [2021-11-23 03:08:20,368 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:20,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:08:20,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:08:20,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:08:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:08:20,401 INFO L87 Difference]: Start difference. First operand has 32 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 30 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:20,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:20,420 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2021-11-23 03:08:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:08:20,422 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 03:08:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:20,429 INFO L225 Difference]: With dead ends: 56 [2021-11-23 03:08:20,429 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 03:08:20,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:08:20,435 INFO L933 BasicCegarLoop]: 42 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, 42 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 [2021-11-23 03:08:20,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:08:20,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 03:08:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-23 03:08:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-11-23 03:08:20,476 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 15 [2021-11-23 03:08:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:20,477 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-11-23 03:08:20,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-11-23 03:08:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:08:20,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:20,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:20,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:08:20,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:08:20,692 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:20,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash 775432273, now seen corresponding path program 1 times [2021-11-23 03:08:20,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:08:20,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773291732] [2021-11-23 03:08:20,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:20,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:08:20,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:08:20,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:08:20,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:08:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:20,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:08:20,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:08:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:08:20,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:08:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:08:21,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:08:21,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773291732] [2021-11-23 03:08:21,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773291732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:21,001 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:21,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:08:21,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437710755] [2021-11-23 03:08:21,002 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:21,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:08:21,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:08:21,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:08:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:08:21,005 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:21,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:21,034 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2021-11-23 03:08:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:08:21,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 03:08:21,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:21,036 INFO L225 Difference]: With dead ends: 45 [2021-11-23 03:08:21,036 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 03:08:21,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:08:21,038 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:21,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 76 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:08:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 03:08:21,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 03:08:21,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-11-23 03:08:21,046 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2021-11-23 03:08:21,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:21,047 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-11-23 03:08:21,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:21,047 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-11-23 03:08:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:08:21,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:21,048 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:21,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:08:21,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:08:21,262 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:21,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:21,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1054333359, now seen corresponding path program 1 times [2021-11-23 03:08:21,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:08:21,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697157395] [2021-11-23 03:08:21,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:21,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:08:21,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:08:21,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:08:21,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:08:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:21,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:08:21,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:08:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:08:21,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:08:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:08:21,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:08:21,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697157395] [2021-11-23 03:08:21,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697157395] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:21,587 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:21,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:08:21,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409556961] [2021-11-23 03:08:21,588 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:21,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:08:21,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:08:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:08:21,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:08:21,591 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:21,722 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2021-11-23 03:08:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:08:21,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 03:08:21,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:21,724 INFO L225 Difference]: With dead ends: 53 [2021-11-23 03:08:21,724 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 03:08:21,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:08:21,726 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:21,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:08:21,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 03:08:21,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-23 03:08:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-11-23 03:08:21,732 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 25 [2021-11-23 03:08:21,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:21,733 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-11-23 03:08:21,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-11-23 03:08:21,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:08:21,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:21,735 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:21,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:08:21,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:08:21,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:21,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:21,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1871981809, now seen corresponding path program 1 times [2021-11-23 03:08:21,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:08:21,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273666437] [2021-11-23 03:08:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:21,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:08:21,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:08:21,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:08:21,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 03:08:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:22,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:08:22,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:08:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 03:08:22,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:08:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 03:08:22,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:08:22,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273666437] [2021-11-23 03:08:22,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273666437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:22,863 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:22,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:08:22,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006914552] [2021-11-23 03:08:22,864 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:22,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:08:22,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:08:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:08:22,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:08:22,865 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:22,933 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2021-11-23 03:08:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:08:22,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 03:08:22,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:22,935 INFO L225 Difference]: With dead ends: 40 [2021-11-23 03:08:22,935 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 03:08:22,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:08:22,937 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 40 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:22,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 51 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:08:22,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 03:08:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-23 03:08:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-11-23 03:08:22,943 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 25 [2021-11-23 03:08:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:22,944 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-11-23 03:08:22,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:08:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-11-23 03:08:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:08:22,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:22,945 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:22,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:08:23,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:08:23,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:23,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1615340901, now seen corresponding path program 1 times [2021-11-23 03:08:23,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:08:23,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029455791] [2021-11-23 03:08:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:23,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:08:23,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:08:23,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:08:23,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6549054a-de1d-4f3a-906d-a426b1012780/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 03:08:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:23,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 03:08:23,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:08:23,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:08:27,043 INFO L354 Elim1Store]: treesize reduction 304, result has 16.7 percent of original size [2021-11-23 03:08:27,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 77 [2021-11-23 03:08:41,303 WARN L227 SmtUtils]: Spent 13.60s on a formula simplification. DAG size of input: 110 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:08:41,305 INFO L354 Elim1Store]: treesize reduction 421, result has 17.0 percent of original size [2021-11-23 03:08:41,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 98 treesize of output 117 [2021-11-23 03:08:46,388 INFO L354 Elim1Store]: treesize reduction 162, result has 35.5 percent of original size [2021-11-23 03:08:46,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 131 [2021-11-23 03:09:28,674 INFO L354 Elim1Store]: treesize reduction 108, result has 52.4 percent of original size [2021-11-23 03:09:28,675 INFO L388 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 9 new quantified variables, introduced 15 case distinctions, treesize of input 218 treesize of output 193 [2021-11-23 03:09:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:09:31,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:09:33,128 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_insert_~last~0#1.offset| (_ BitVec 32))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~last~0#1.base|) (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~last~0#1.offset|) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 03:09:35,157 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~last~0#1.base| (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~new_node~0#1.offset| (_ BitVec 32))) (not (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|)))) (store .cse1 |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|) (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) |ULTIMATE.start_dll_insert_~last~0#1.base|))))) (store .cse0 |ULTIMATE.start_dll_insert_~last~0#1.base| (store (select .cse0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~last~0#1.offset|) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 03:09:37,221 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_dll_insert_~last~0#1.base_18| (_ BitVec 32))) (not (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~last~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|)))) (store .cse1 |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|) (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) |c_ULTIMATE.start_dll_insert_~last~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) |v_ULTIMATE.start_dll_insert_~last~0#1.base_18|))))) (store .cse0 |v_ULTIMATE.start_dll_insert_~last~0#1.base_18| (store (select .cse0 |v_ULTIMATE.start_dll_insert_~last~0#1.base_18|) (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~last~0#1.offset|) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 03:09:39,259 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_dll_insert_~last~0#1.base_18| (_ BitVec 32))) (not (= (select (select (let ((.cse0 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) |c_ULTIMATE.start_node_create_#res#1.base|)))) (store .cse1 |c_ULTIMATE.start_node_create_#res#1.base| (store (store (select .cse1 |c_ULTIMATE.start_node_create_#res#1.base|) (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) .cse2) (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) |v_ULTIMATE.start_dll_insert_~last~0#1.base_18|)))))) (store .cse0 |v_ULTIMATE.start_dll_insert_~last~0#1.base_18| (store (select .cse0 |v_ULTIMATE.start_dll_insert_~last~0#1.base_18|) (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~last~0#1.offset|) |c_ULTIMATE.start_node_create_#res#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 03:09:41,324 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|ULTIMATE.start_dll_insert_~new_node~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_dll_insert_~last~0#1.base_18| (_ BitVec 32)) (|ULTIMATE.start_node_create_~temp~0#1.offset| (_ BitVec 32))) (not (= (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_node_create_~temp~0#1.offset|) (_ bv0 32)) (bvadd (_ bv8 32) |ULTIMATE.start_node_create_~temp~0#1.offset|) (_ bv0 32)) |ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_1)))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (let ((.cse1 (store .cse3 .cse2 (store (select .cse3 .cse2) (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|) |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse1 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_node_create_~temp~0#1.base|) (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) .cse2) (bvadd (_ bv4 32) |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) |v_ULTIMATE.start_dll_insert_~last~0#1.base_18|))))))) (store .cse0 |v_ULTIMATE.start_dll_insert_~last~0#1.base_18| (store (select .cse0 |v_ULTIMATE.start_dll_insert_~last~0#1.base_18|) (bvadd (_ bv8 32) |ULTIMATE.start_dll_insert_~last~0#1.offset|) |c_ULTIMATE.start_node_create_~temp~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-23 03:09:45,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30559760 treesize of output 30246412