./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-data/packet_filter.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/heap-data/packet_filter.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 d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 14:52:55,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 14:52:55,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 14:52:55,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 14:52:55,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 14:52:55,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 14:52:55,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 14:52:55,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 14:52:55,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 14:52:55,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 14:52:55,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 14:52:55,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 14:52:55,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 14:52:55,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 14:52:55,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 14:52:55,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 14:52:55,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 14:52:55,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 14:52:55,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 14:52:55,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 14:52:55,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 14:52:55,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 14:52:55,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 14:52:55,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 14:52:55,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 14:52:55,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 14:52:55,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 14:52:55,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 14:52:55,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 14:52:55,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 14:52:55,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 14:52:55,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 14:52:55,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 14:52:55,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 14:52:55,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 14:52:55,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 14:52:55,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 14:52:55,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 14:52:55,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 14:52:55,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 14:52:55,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 14:52:55,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 14:52:55,399 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 14:52:55,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 14:52:55,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 14:52:55,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 14:52:55,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 14:52:55,401 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 14:52:55,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 14:52:55,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 14:52:55,402 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 14:52:55,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 14:52:55,403 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 14:52:55,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 14:52:55,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 14:52:55,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 14:52:55,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 14:52:55,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 14:52:55,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 14:52:55,404 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 14:52:55,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 14:52:55,404 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 14:52:55,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 14:52:55,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 14:52:55,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 14:52:55,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 14:52:55,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 14:52:55,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 14:52:55,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 14:52:55,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 14:52:55,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 14:52:55,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 14:52:55,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 14:52:55,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 14:52:55,412 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 14:52:55,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 14:52:55,412 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 14:52:55,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f [2023-02-18 14:52:55,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 14:52:55,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 14:52:55,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 14:52:55,622 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 14:52:55,622 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 14:52:55,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/packet_filter.i [2023-02-18 14:52:56,542 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 14:52:56,848 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 14:52:56,850 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/packet_filter.i [2023-02-18 14:52:56,864 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec407eadc/1e41e10a90bd4a3da0d4f29b79d3a850/FLAG6b0353f3d [2023-02-18 14:52:56,887 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec407eadc/1e41e10a90bd4a3da0d4f29b79d3a850 [2023-02-18 14:52:56,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 14:52:56,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 14:52:56,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 14:52:56,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 14:52:56,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 14:52:56,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:52:56" (1/1) ... [2023-02-18 14:52:56,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af02795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:56, skipping insertion in model container [2023-02-18 14:52:56,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:52:56" (1/1) ... [2023-02-18 14:52:56,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 14:52:56,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 14:52:57,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_charp [2023-02-18 14:52:57,089 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/heap-data/packet_filter.i[23925,23938] [2023-02-18 14:52:57,101 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/heap-data/packet_filter.i[24159,24172] [2023-02-18 14:52:57,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 14:52:57,117 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 14:52:57,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_charp [2023-02-18 14:52:57,167 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/heap-data/packet_filter.i[23925,23938] [2023-02-18 14:52:57,169 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/heap-data/packet_filter.i[24159,24172] [2023-02-18 14:52:57,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 14:52:57,199 INFO L208 MainTranslator]: Completed translation [2023-02-18 14:52:57,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57 WrapperNode [2023-02-18 14:52:57,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 14:52:57,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 14:52:57,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 14:52:57,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 14:52:57,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,264 INFO L138 Inliner]: procedures = 130, calls = 86, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2023-02-18 14:52:57,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 14:52:57,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 14:52:57,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 14:52:57,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 14:52:57,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,295 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 14:52:57,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 14:52:57,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 14:52:57,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 14:52:57,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (1/1) ... [2023-02-18 14:52:57,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 14:52:57,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:52:57,362 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) [2023-02-18 14:52:57,433 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 [2023-02-18 14:52:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 14:52:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 14:52:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 14:52:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 14:52:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2023-02-18 14:52:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2023-02-18 14:52:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 14:52:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 14:52:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 14:52:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2023-02-18 14:52:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure send [2023-02-18 14:52:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2023-02-18 14:52:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 14:52:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-18 14:52:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 14:52:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 14:52:57,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 14:52:57,631 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 14:52:57,638 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 14:52:57,923 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 14:52:57,927 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 14:52:57,927 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 14:52:57,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:52:57 BoogieIcfgContainer [2023-02-18 14:52:57,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 14:52:57,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 14:52:57,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 14:52:57,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 14:52:57,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 02:52:56" (1/3) ... [2023-02-18 14:52:57,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18736dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:52:57, skipping insertion in model container [2023-02-18 14:52:57,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:52:57" (2/3) ... [2023-02-18 14:52:57,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18736dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:52:57, skipping insertion in model container [2023-02-18 14:52:57,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:52:57" (3/3) ... [2023-02-18 14:52:57,934 INFO L112 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2023-02-18 14:52:57,944 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 14:52:57,944 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-02-18 14:52:57,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 14:52:57,976 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;@38d2d612, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 14:52:57,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-02-18 14:52:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 37 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 14:52:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 14:52:57,983 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:52:57,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:52:57,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 14:52:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:52:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2117090455, now seen corresponding path program 1 times [2023-02-18 14:52:57,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:52:57,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535849337] [2023-02-18 14:52:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:52:57,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:52:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:52:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:52:58,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:52:58,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535849337] [2023-02-18 14:52:58,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535849337] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:52:58,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:52:58,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 14:52:58,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690148401] [2023-02-18 14:52:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:52:58,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 14:52:58,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:52:58,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 14:52:58,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 14:52:58,103 INFO L87 Difference]: Start difference. First operand has 45 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 37 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 4.0) 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) [2023-02-18 14:52:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:52:58,118 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2023-02-18 14:52:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 14:52:58,119 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) 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 [2023-02-18 14:52:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:52:58,123 INFO L225 Difference]: With dead ends: 72 [2023-02-18 14:52:58,123 INFO L226 Difference]: Without dead ends: 41 [2023-02-18 14:52:58,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 14:52:58,129 INFO L413 NwaCegarLoop]: 55 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, 55 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 [2023-02-18 14:52:58,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:52:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-18 14:52:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-02-18 14:52:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 14:52:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2023-02-18 14:52:58,152 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 8 [2023-02-18 14:52:58,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:52:58,152 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2023-02-18 14:52:58,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) 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) [2023-02-18 14:52:58,152 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2023-02-18 14:52:58,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 14:52:58,153 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:52:58,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:52:58,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 14:52:58,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 14:52:58,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:52:58,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1351761174, now seen corresponding path program 1 times [2023-02-18 14:52:58,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:52:58,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429756585] [2023-02-18 14:52:58,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:52:58,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:52:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:52:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:52:58,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:52:58,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429756585] [2023-02-18 14:52:58,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429756585] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:52:58,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:52:58,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 14:52:58,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67183795] [2023-02-18 14:52:58,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:52:58,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 14:52:58,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:52:58,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 14:52:58,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 14:52:58,273 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:52:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:52:58,358 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2023-02-18 14:52:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 14:52:58,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 14:52:58,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:52:58,360 INFO L225 Difference]: With dead ends: 75 [2023-02-18 14:52:58,360 INFO L226 Difference]: Without dead ends: 53 [2023-02-18 14:52:58,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 14:52:58,361 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 29 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 14:52:58,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 114 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 14:52:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-18 14:52:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2023-02-18 14:52:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 14:52:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2023-02-18 14:52:58,369 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 9 [2023-02-18 14:52:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:52:58,370 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2023-02-18 14:52:58,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:52:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2023-02-18 14:52:58,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 14:52:58,370 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:52:58,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:52:58,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 14:52:58,371 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 14:52:58,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:52:58,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2000471293, now seen corresponding path program 1 times [2023-02-18 14:52:58,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:52:58,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859898345] [2023-02-18 14:52:58,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:52:58,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:52:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:52:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:52:58,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:52:58,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859898345] [2023-02-18 14:52:58,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859898345] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:52:58,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:52:58,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 14:52:58,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919440160] [2023-02-18 14:52:58,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:52:58,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 14:52:58,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:52:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 14:52:58,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 14:52:58,454 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2023-02-18 14:52:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:52:58,505 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2023-02-18 14:52:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 14:52:58,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2023-02-18 14:52:58,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:52:58,506 INFO L225 Difference]: With dead ends: 59 [2023-02-18 14:52:58,506 INFO L226 Difference]: Without dead ends: 43 [2023-02-18 14:52:58,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 14:52:58,507 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:52:58,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 128 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:52:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-18 14:52:58,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-02-18 14:52:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 14:52:58,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2023-02-18 14:52:58,513 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 11 [2023-02-18 14:52:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:52:58,513 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2023-02-18 14:52:58,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2023-02-18 14:52:58,513 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2023-02-18 14:52:58,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 14:52:58,514 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:52:58,514 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:52:58,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 14:52:58,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 14:52:58,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:52:58,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1234633309, now seen corresponding path program 1 times [2023-02-18 14:52:58,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:52:58,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847512040] [2023-02-18 14:52:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:52:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:52:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:52:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 14:52:58,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:52:58,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847512040] [2023-02-18 14:52:58,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847512040] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:52:58,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:52:58,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 14:52:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571263328] [2023-02-18 14:52:58,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:52:58,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 14:52:58,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:52:58,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 14:52:58,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 14:52:58,551 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:52:58,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:52:58,559 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2023-02-18 14:52:58,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 14:52:58,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 14:52:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:52:58,561 INFO L225 Difference]: With dead ends: 46 [2023-02-18 14:52:58,561 INFO L226 Difference]: Without dead ends: 44 [2023-02-18 14:52:58,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 14:52:58,562 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:52:58,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:52:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-18 14:52:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-02-18 14:52:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 36 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 14:52:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2023-02-18 14:52:58,567 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 14 [2023-02-18 14:52:58,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:52:58,567 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2023-02-18 14:52:58,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:52:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2023-02-18 14:52:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 14:52:58,568 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:52:58,568 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:52:58,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 14:52:58,568 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 14:52:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:52:58,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1234631387, now seen corresponding path program 1 times [2023-02-18 14:52:58,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:52:58,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954700164] [2023-02-18 14:52:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:52:58,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:52:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:52:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:52:58,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:52:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954700164] [2023-02-18 14:52:58,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954700164] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:52:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861463599] [2023-02-18 14:52:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:52:58,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:52:58,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:52:58,873 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) [2023-02-18 14:52:58,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 14:52:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:52:58,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-18 14:52:58,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:52:59,034 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:52:59,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 32 [2023-02-18 14:52:59,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:52:59,083 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 [2023-02-18 14:52:59,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:52:59,087 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 [2023-02-18 14:52:59,090 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:52:59,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2023-02-18 14:52:59,103 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 15 treesize of output 7 [2023-02-18 14:52:59,105 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 15 treesize of output 7 [2023-02-18 14:52:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:52:59,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 14:52:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:52:59,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861463599] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 14:52:59,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 14:52:59,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-02-18 14:52:59,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205848269] [2023-02-18 14:52:59,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 14:52:59,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 14:52:59,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:52:59,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 14:52:59,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 14:52:59,159 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2023-02-18 14:52:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:52:59,319 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2023-02-18 14:52:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 14:52:59,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 14 [2023-02-18 14:52:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:52:59,321 INFO L225 Difference]: With dead ends: 87 [2023-02-18 14:52:59,321 INFO L226 Difference]: Without dead ends: 64 [2023-02-18 14:52:59,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 14:52:59,321 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 48 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 14:52:59,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 137 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 14:52:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-18 14:52:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2023-02-18 14:52:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 43 states have internal predecessors, (53), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 14:52:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2023-02-18 14:52:59,327 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 14 [2023-02-18 14:52:59,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:52:59,327 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2023-02-18 14:52:59,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2023-02-18 14:52:59,327 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2023-02-18 14:52:59,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 14:52:59,328 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:52:59,328 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:52:59,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 14:52:59,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:52:59,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 14:52:59,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:52:59,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1109742724, now seen corresponding path program 1 times [2023-02-18 14:52:59,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:52:59,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592471562] [2023-02-18 14:52:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:52:59,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:52:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:52:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:52:59,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:52:59,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592471562] [2023-02-18 14:52:59,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592471562] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:52:59,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132689245] [2023-02-18 14:52:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:52:59,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:52:59,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:52:59,718 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) [2023-02-18 14:52:59,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 14:52:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:52:59,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-18 14:52:59,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:52:59,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:52:59,821 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 1 case distinctions, treesize of input 9 treesize of output 25 [2023-02-18 14:52:59,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:52:59,840 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 [2023-02-18 14:52:59,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:52:59,846 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 [2023-02-18 14:52:59,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:52:59,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2023-02-18 14:52:59,861 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 15 treesize of output 7 [2023-02-18 14:52:59,864 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 15 treesize of output 7 [2023-02-18 14:52:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:52:59,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 14:52:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:52:59,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132689245] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 14:52:59,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 14:52:59,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-02-18 14:52:59,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593138658] [2023-02-18 14:52:59,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 14:52:59,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 14:52:59,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:52:59,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 14:52:59,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 14:52:59,924 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:53:00,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:53:00,070 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2023-02-18 14:53:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 14:53:00,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 14:53:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:53:00,071 INFO L225 Difference]: With dead ends: 70 [2023-02-18 14:53:00,071 INFO L226 Difference]: Without dead ends: 54 [2023-02-18 14:53:00,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 14:53:00,072 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 13 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 14:53:00,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 156 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 14:53:00,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-18 14:53:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2023-02-18 14:53:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 14:53:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2023-02-18 14:53:00,076 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 16 [2023-02-18 14:53:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:53:00,076 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2023-02-18 14:53:00,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:53:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2023-02-18 14:53:00,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 14:53:00,081 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:53:00,081 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:53:00,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 14:53:00,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-18 14:53:00,286 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 14:53:00,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:53:00,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1773797748, now seen corresponding path program 1 times [2023-02-18 14:53:00,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:53:00,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567460758] [2023-02-18 14:53:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:53:00,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:53:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:53:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 14:53:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:53:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:53:01,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:53:01,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567460758] [2023-02-18 14:53:01,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567460758] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:53:01,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293621986] [2023-02-18 14:53:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:53:01,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:53:01,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:53:01,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 14:53:01,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 14:53:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:53:01,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 63 conjunts are in the unsatisfiable core [2023-02-18 14:53:01,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:53:01,446 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 21 treesize of output 9 [2023-02-18 14:53:01,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:53:01,485 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 118 [2023-02-18 14:53:01,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:53:01,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 100 [2023-02-18 14:53:01,502 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:53:01,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 100 [2023-02-18 14:53:01,515 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 22 treesize of output 20 [2023-02-18 14:53:01,524 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 22 treesize of output 20 [2023-02-18 14:53:01,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:53:01,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 139 treesize of output 174 [2023-02-18 14:53:01,548 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 30 treesize of output 28 [2023-02-18 14:53:01,559 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 38 treesize of output 32 [2023-02-18 14:53:01,594 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 39 [2023-02-18 14:53:01,601 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 9 treesize of output 7 [2023-02-18 14:53:01,614 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:53:01,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 23 [2023-02-18 14:53:01,621 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 [2023-02-18 14:53:01,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-02-18 14:53:01,633 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 32 treesize of output 24 [2023-02-18 14:53:01,642 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:53:46,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:53:46,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 291 select indices, 291 select index equivalence classes, 0 disjoint index pairs (out of 42195 index pairs), introduced 292 new quantified variables, introduced 42195 case distinctions, treesize of input 43969 treesize of output 545306