./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/dll2c_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/list-simple/dll2c_append_unequal.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9aabbeff87ba819b44dc608a3105d0ba81b71cd88693ecf2e6bf3860a7863e64 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:03:48,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:03:48,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:03:48,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:03:48,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:03:48,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:03:48,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:03:48,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:03:48,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:03:48,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:03:48,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:03:48,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:03:48,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:03:48,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:03:48,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:03:48,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:03:48,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:03:48,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:03:48,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:03:48,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:03:48,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:03:48,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:03:48,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:03:48,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:03:48,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:03:48,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:03:48,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:03:48,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:03:48,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:03:48,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:03:48,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:03:48,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:03:48,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:03:48,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:03:48,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:03:48,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:03:48,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:03:48,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:03:48,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:03:48,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:03:48,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:03:48,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:03:48,943 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:03:48,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:03:48,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:03:48,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:03:48,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:03:48,945 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:03:48,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:03:48,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:03:48,945 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:03:48,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:03:48,946 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:03:48,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:03:48,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:03:48,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:03:48,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:03:48,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:03:48,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:03:48,947 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:03:48,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:03:48,947 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:03:48,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:03:48,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:03:48,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:03:48,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:03:48,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:03:48,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:03:48,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:03:48,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:03:48,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:03:48,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:03:48,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:03:48,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:03:48,949 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:03:48,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:03:48,949 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:03:48,949 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9aabbeff87ba819b44dc608a3105d0ba81b71cd88693ecf2e6bf3860a7863e64 [2023-02-16 01:03:49,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:03:49,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:03:49,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:03:49,115 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:03:49,116 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:03:49,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_append_unequal.i [2023-02-16 01:03:50,297 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:03:50,523 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:03:50,524 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_append_unequal.i [2023-02-16 01:03:50,539 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9656f0dae/bad3339f77f84fc59e87ca5c6b98a12d/FLAGbe90ad2a2 [2023-02-16 01:03:50,555 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9656f0dae/bad3339f77f84fc59e87ca5c6b98a12d [2023-02-16 01:03:50,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:03:50,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:03:50,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:03:50,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:03:50,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:03:50,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:03:50" (1/1) ... [2023-02-16 01:03:50,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f07127a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:50, skipping insertion in model container [2023-02-16 01:03:50,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:03:50" (1/1) ... [2023-02-16 01:03:50,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:03:50,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:03:50,869 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_append_unequal.i[24672,24685] [2023-02-16 01:03:50,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:03:50,890 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:03:50,973 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_append_unequal.i[24672,24685] [2023-02-16 01:03:50,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:03:51,025 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:03:51,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51 WrapperNode [2023-02-16 01:03:51,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:03:51,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:03:51,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:03:51,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:03:51,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,077 INFO L138 Inliner]: procedures = 127, calls = 49, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 146 [2023-02-16 01:03:51,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:03:51,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:03:51,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:03:51,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:03:51,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,097 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:03:51,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:03:51,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:03:51,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:03:51,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (1/1) ... [2023-02-16 01:03:51,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:03:51,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:51,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 01:03:51,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 01:03:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 01:03:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 01:03:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-02-16 01:03:51,182 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-02-16 01:03:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 01:03:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:03:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 01:03:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 01:03:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 01:03:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 01:03:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 01:03:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:03:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:03:51,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:03:51,305 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:03:51,307 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:03:51,500 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:03:51,504 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:03:51,504 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-16 01:03:51,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:03:51 BoogieIcfgContainer [2023-02-16 01:03:51,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:03:51,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:03:51,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:03:51,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:03:51,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:03:50" (1/3) ... [2023-02-16 01:03:51,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679f58b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:03:51, skipping insertion in model container [2023-02-16 01:03:51,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:51" (2/3) ... [2023-02-16 01:03:51,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679f58b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:03:51, skipping insertion in model container [2023-02-16 01:03:51,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:03:51" (3/3) ... [2023-02-16 01:03:51,528 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_append_unequal.i [2023-02-16 01:03:51,541 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:03:51,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:03:51,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:03:51,638 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78e546e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:03:51,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:03:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:03:51,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 01:03:51,657 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:51,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:51,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash -140887327, now seen corresponding path program 1 times [2023-02-16 01:03:51,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:51,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065300011] [2023-02-16 01:03:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:52,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 01:03:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 01:03:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:52,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:52,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065300011] [2023-02-16 01:03:52,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065300011] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:52,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:52,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:03:52,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050121453] [2023-02-16 01:03:52,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:52,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:03:52,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:52,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:03:52,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:03:52,175 INFO L87 Difference]: Start difference. First operand has 37 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:03:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:52,276 INFO L93 Difference]: Finished difference Result 65 states and 88 transitions. [2023-02-16 01:03:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:03:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-02-16 01:03:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:52,297 INFO L225 Difference]: With dead ends: 65 [2023-02-16 01:03:52,297 INFO L226 Difference]: Without dead ends: 29 [2023-02-16 01:03:52,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:03:52,301 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:52,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:03:52,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-16 01:03:52,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-16 01:03:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:03:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2023-02-16 01:03:52,353 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 24 [2023-02-16 01:03:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:52,354 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2023-02-16 01:03:52,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:03:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2023-02-16 01:03:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 01:03:52,355 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:52,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:52,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:03:52,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:52,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:52,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1735775636, now seen corresponding path program 1 times [2023-02-16 01:03:52,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:52,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265192331] [2023-02-16 01:03:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:52,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 01:03:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:52,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 01:03:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:52,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:52,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265192331] [2023-02-16 01:03:52,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265192331] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:52,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:52,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 01:03:52,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378957267] [2023-02-16 01:03:52,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:52,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:03:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:03:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:03:52,549 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:03:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:52,596 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2023-02-16 01:03:52,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:03:52,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-02-16 01:03:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:52,597 INFO L225 Difference]: With dead ends: 54 [2023-02-16 01:03:52,597 INFO L226 Difference]: Without dead ends: 34 [2023-02-16 01:03:52,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:03:52,598 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:52,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 79 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:03:52,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-16 01:03:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2023-02-16 01:03:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:03:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2023-02-16 01:03:52,604 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 24 [2023-02-16 01:03:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:52,604 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2023-02-16 01:03:52,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:03:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2023-02-16 01:03:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-16 01:03:52,605 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:52,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:52,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 01:03:52,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1055008088, now seen corresponding path program 1 times [2023-02-16 01:03:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:52,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735495489] [2023-02-16 01:03:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:52,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 01:03:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:52,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:53,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-16 01:03:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:03:53,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:53,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735495489] [2023-02-16 01:03:53,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735495489] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:53,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978170666] [2023-02-16 01:03:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:53,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:53,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:03:53,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:03:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:53,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-16 01:03:53,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:53,541 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 4 [2023-02-16 01:03:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:53,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2023-02-16 01:03:53,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-02-16 01:03:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:03:53,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:03:53,747 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_8| Int) (v_ArrVal_460 (Array Int Int))) (or (not (< |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_8| |c_#StackHeapBarrier|)) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_8| v_ArrVal_460) |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))))) is different from false [2023-02-16 01:03:53,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978170666] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:53,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:03:53,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2023-02-16 01:03:53,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039467173] [2023-02-16 01:03:53,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:03:53,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-16 01:03:53,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:53,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-16 01:03:53,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=572, Unknown=1, NotChecked=48, Total=702 [2023-02-16 01:03:53,755 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 25 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 19 states have internal predecessors, (44), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 01:03:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:54,230 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2023-02-16 01:03:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 01:03:54,231 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 19 states have internal predecessors, (44), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 34 [2023-02-16 01:03:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:54,232 INFO L225 Difference]: With dead ends: 59 [2023-02-16 01:03:54,232 INFO L226 Difference]: Without dead ends: 34 [2023-02-16 01:03:54,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=949, Unknown=1, NotChecked=64, Total=1190 [2023-02-16 01:03:54,233 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 110 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:54,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 217 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 01:03:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-16 01:03:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2023-02-16 01:03:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 01:03:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-02-16 01:03:54,238 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 34 [2023-02-16 01:03:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:54,238 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-02-16 01:03:54,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 19 states have internal predecessors, (44), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 01:03:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-02-16 01:03:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-16 01:03:54,239 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:54,239 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:03:54,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 01:03:54,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:54,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:54,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1053161046, now seen corresponding path program 1 times [2023-02-16 01:03:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:54,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332107745] [2023-02-16 01:03:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:54,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 01:04:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:04:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-16 01:04:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:04:01,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:04:01,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332107745] [2023-02-16 01:04:01,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332107745] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:04:01,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133850140] [2023-02-16 01:04:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:04:01,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:04:01,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:04:01,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:04:01,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:04:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:02,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 277 conjunts are in the unsatisfiable core [2023-02-16 01:04:02,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:04:02,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 01:04:02,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-16 01:04:02,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 01:04:02,473 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:04:02,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 01:04:02,559 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2023-02-16 01:04:02,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 01:04:02,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:04:02,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-16 01:04:02,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:04:02,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2023-02-16 01:04:02,811 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 18 [2023-02-16 01:04:02,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-16 01:04:02,981 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:04:02,981 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 33 [2023-02-16 01:04:02,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:04:02,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 01:04:03,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 01:04:03,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:04:03,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-16 01:04:03,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:04:03,256 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-16 01:04:03,256 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 78 treesize of output 66 [2023-02-16 01:04:03,272 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-16 01:04:03,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2023-02-16 01:04:03,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-16 01:04:03,298 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-02-16 01:04:03,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2023-02-16 01:04:03,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:04:03,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:04:03,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:04:03,782 INFO L321 Elim1Store]: treesize reduction 523, result has 6.8 percent of original size [2023-02-16 01:04:03,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 769 treesize of output 310 [2023-02-16 01:04:03,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:04:03,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:54,313 WARN L233 SmtUtils]: Spent 1.84m on a formula simplification. DAG size of input: 921 DAG size of output: 128 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-16 01:05:54,314 INFO L321 Elim1Store]: treesize reduction 5775, result has 5.8 percent of original size [2023-02-16 01:05:54,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 17 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 25 new quantified variables, introduced 149 case distinctions, treesize of input 266656 treesize of output 195274 [2023-02-16 01:05:54,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:56,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:58,091 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:05:58,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:58,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:58,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:59,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:59,036 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:05:59,409 INFO L217 Elim1Store]: Index analysis took 1323 ms