./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-sorted-1.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/forester-heap/sll-sorted-1.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 e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:59:52,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:59:52,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:59:52,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:59:52,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:59:52,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:59:52,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:59:52,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:59:52,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:59:52,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:59:52,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:59:52,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:59:52,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:59:52,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:59:52,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:59:52,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:59:52,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:59:52,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:59:52,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:59:52,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:59:52,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:59:52,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:59:52,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:59:52,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:59:52,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:59:52,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:59:52,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:59:52,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:59:52,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:59:52,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:59:52,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:59:52,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:59:52,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:59:52,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:59:52,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:59:52,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:59:52,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:59:52,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:59:52,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:59:52,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:59:52,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:59:52,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:59:52,432 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:59:52,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:59:52,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:59:52,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:59:52,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:59:52,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:59:52,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:59:52,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:59:52,434 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:59:52,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:59:52,435 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:59:52,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:59:52,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:59:52,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:59:52,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:59:52,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:59:52,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:59:52,436 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:59:52,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:59:52,436 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:59:52,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:59:52,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:59:52,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:59:52,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:59:52,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:59:52,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:59:52,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:59:52,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:59:52,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:59:52,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:59:52,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:59:52,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:59:52,439 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:59:52,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:59:52,439 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:59:52,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 [2023-02-16 00:59:52,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:59:52,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:59:52,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:59:52,637 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:59:52,637 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:59:52,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-sorted-1.i [2023-02-16 00:59:53,609 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:59:53,799 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:59:53,800 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-1.i [2023-02-16 00:59:53,811 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83456b5ba/d9f7648975d24875b647c105dab16955/FLAG2a6f1645b [2023-02-16 00:59:53,822 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83456b5ba/d9f7648975d24875b647c105dab16955 [2023-02-16 00:59:53,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:59:53,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:59:53,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:59:53,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:59:53,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:59:53,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:59:53" (1/1) ... [2023-02-16 00:59:53,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295106b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:53, skipping insertion in model container [2023-02-16 00:59:53,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:59:53" (1/1) ... [2023-02-16 00:59:53,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:59:53,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:59:54,042 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/forester-heap/sll-sorted-1.i[22317,22330] [2023-02-16 00:59:54,050 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/forester-heap/sll-sorted-1.i[22547,22560] [2023-02-16 00:59:54,056 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/forester-heap/sll-sorted-1.i[22877,22890] [2023-02-16 00:59:54,057 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/forester-heap/sll-sorted-1.i[22941,22954] [2023-02-16 00:59:54,058 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/forester-heap/sll-sorted-1.i[23072,23085] [2023-02-16 00:59:54,059 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/forester-heap/sll-sorted-1.i[23136,23149] [2023-02-16 00:59:54,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:59:54,072 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:59:54,100 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/forester-heap/sll-sorted-1.i[22317,22330] [2023-02-16 00:59:54,102 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/forester-heap/sll-sorted-1.i[22547,22560] [2023-02-16 00:59:54,106 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/forester-heap/sll-sorted-1.i[22877,22890] [2023-02-16 00:59:54,110 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/forester-heap/sll-sorted-1.i[22941,22954] [2023-02-16 00:59:54,111 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/forester-heap/sll-sorted-1.i[23072,23085] [2023-02-16 00:59:54,111 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/forester-heap/sll-sorted-1.i[23136,23149] [2023-02-16 00:59:54,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:59:54,129 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:59:54,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54 WrapperNode [2023-02-16 00:59:54,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:59:54,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:59:54,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:59:54,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:59:54,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,168 INFO L138 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 186 [2023-02-16 00:59:54,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:59:54,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:59:54,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:59:54,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:59:54,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:59:54,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:59:54,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:59:54,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:59:54,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (1/1) ... [2023-02-16 00:59:54,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:59:54,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:59:54,228 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 00:59:54,234 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 00:59:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 00:59:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 00:59:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 00:59:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:59:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 00:59:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 00:59:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:59:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:59:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:59:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:59:54,342 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:59:54,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:59:54,529 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:59:54,533 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:59:54,533 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2023-02-16 00:59:54,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:59:54 BoogieIcfgContainer [2023-02-16 00:59:54,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:59:54,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:59:54,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:59:54,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:59:54,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:59:53" (1/3) ... [2023-02-16 00:59:54,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6c9891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:59:54, skipping insertion in model container [2023-02-16 00:59:54,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:59:54" (2/3) ... [2023-02-16 00:59:54,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6c9891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:59:54, skipping insertion in model container [2023-02-16 00:59:54,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:59:54" (3/3) ... [2023-02-16 00:59:54,550 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2023-02-16 00:59:54,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:59:54,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-16 00:59:54,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:59:54,611 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;@474bd76a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:59:54,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-16 00:59:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 55 states have internal predecessors, (91), 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) [2023-02-16 00:59:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-16 00:59:54,622 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:59:54,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-16 00:59:54,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-16 00:59:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:59:54,630 INFO L85 PathProgramCache]: Analyzing trace with hash 890153286, now seen corresponding path program 1 times [2023-02-16 00:59:54,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:59:54,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563990117] [2023-02-16 00:59:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:59:54,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:59:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:59:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:59:54,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:59:54,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563990117] [2023-02-16 00:59:54,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563990117] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:59:54,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:59:54,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 00:59:54,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753253256] [2023-02-16 00:59:54,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:59:54,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 00:59:54,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:59:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 00:59:54,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:59:54,828 INFO L87 Difference]: Start difference. First operand has 56 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 55 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:59:54,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:59:54,843 INFO L93 Difference]: Finished difference Result 106 states and 172 transitions. [2023-02-16 00:59:54,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 00:59:54,844 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-16 00:59:54,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:59:54,850 INFO L225 Difference]: With dead ends: 106 [2023-02-16 00:59:54,850 INFO L226 Difference]: Without dead ends: 50 [2023-02-16 00:59:54,851 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 [2023-02-16 00:59:54,853 INFO L413 NwaCegarLoop]: 67 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, 67 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 [2023-02-16 00:59:54,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:59:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-16 00:59:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-16 00:59:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 49 states have internal predecessors, (60), 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) [2023-02-16 00:59:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2023-02-16 00:59:54,873 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 6 [2023-02-16 00:59:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:59:54,873 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2023-02-16 00:59:54,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:59:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2023-02-16 00:59:54,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 00:59:54,874 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:59:54,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:59:54,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:59:54,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-16 00:59:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:59:54,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1806859191, now seen corresponding path program 1 times [2023-02-16 00:59:54,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:59:54,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827409089] [2023-02-16 00:59:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:59:54,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:59:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:59:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:59:54,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:59:54,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827409089] [2023-02-16 00:59:54,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827409089] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:59:54,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:59:54,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:59:54,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427345105] [2023-02-16 00:59:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:59:54,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:59:54,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:59:54,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:59:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:59:54,923 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-16 00:59:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:59:54,962 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2023-02-16 00:59:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:59:54,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-02-16 00:59:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:59:54,967 INFO L225 Difference]: With dead ends: 103 [2023-02-16 00:59:54,968 INFO L226 Difference]: Without dead ends: 55 [2023-02-16 00:59:54,968 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 [2023-02-16 00:59:54,969 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 27 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:59:54,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 80 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:59:54,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-16 00:59:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2023-02-16 00:59:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 53 states have internal predecessors, (65), 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) [2023-02-16 00:59:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2023-02-16 00:59:54,974 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 7 [2023-02-16 00:59:54,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:59:54,975 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2023-02-16 00:59:54,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-16 00:59:54,975 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2023-02-16 00:59:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-16 00:59:54,975 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:59:54,975 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:59:54,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 00:59:54,976 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-16 00:59:54,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:59:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash 443319948, now seen corresponding path program 1 times [2023-02-16 00:59:54,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:59:54,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527230880] [2023-02-16 00:59:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:59:54,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:59:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:59:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:59:55,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:59:55,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527230880] [2023-02-16 00:59:55,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527230880] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:59:55,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:59:55,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:59:55,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785516845] [2023-02-16 00:59:55,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:59:55,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:59:55,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:59:55,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:59:55,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:59:55,086 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-02-16 00:59:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:59:55,168 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2023-02-16 00:59:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:59:55,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 [2023-02-16 00:59:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:59:55,170 INFO L225 Difference]: With dead ends: 87 [2023-02-16 00:59:55,171 INFO L226 Difference]: Without dead ends: 85 [2023-02-16 00:59:55,171 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 [2023-02-16 00:59:55,172 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 135 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:59:55,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 65 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:59:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-16 00:59:55,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2023-02-16 00:59:55,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 51 states have internal predecessors, (63), 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) [2023-02-16 00:59:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2023-02-16 00:59:55,181 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 11 [2023-02-16 00:59:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:59:55,181 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2023-02-16 00:59:55,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-02-16 00:59:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2023-02-16 00:59:55,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 00:59:55,182 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:59:55,182 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:59:55,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 00:59:55,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-16 00:59:55,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:59:55,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1236050174, now seen corresponding path program 1 times [2023-02-16 00:59:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:59:55,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076154608] [2023-02-16 00:59:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:59:55,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:59:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:59:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:59:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:59:55,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076154608] [2023-02-16 00:59:55,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076154608] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:59:55,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330732692] [2023-02-16 00:59:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:59:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:59:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:59:55,860 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 00:59:55,872 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 00:59:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:59:55,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-16 00:59:55,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:59:55,995 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 00:59:56,027 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-16 00:59:56,039 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 00:59:56,039 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 14 treesize of output 20 [2023-02-16 00:59:56,048 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 00:59:56,054 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-16 00:59:56,067 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 00:59:56,067 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 14 treesize of output 20 [2023-02-16 00:59:56,076 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 00:59:56,086 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 00:59:56,087 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 11 treesize of output 11 [2023-02-16 00:59:56,134 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 00:59:56,135 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 47 [2023-02-16 00:59:56,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-02-16 00:59:56,147 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 18 treesize of output 20 [2023-02-16 00:59:56,301 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 29 treesize of output 17 [2023-02-16 00:59:56,309 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 15 treesize of output 7 [2023-02-16 00:59:56,342 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:59:56,344 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:59:56,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 10 [2023-02-16 00:59:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:59:56,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:59:56,400 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 69 treesize of output 49 [2023-02-16 00:59:56,409 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_141 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_141) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_ArrVal_142 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_142) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|))) is different from false [2023-02-16 00:59:56,423 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:59:56,423 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2023-02-16 00:59:56,428 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:59:56,428 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 42 [2023-02-16 00:59:56,438 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:59:56,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 64 treesize of output 47 [2023-02-16 00:59:56,461 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:59:56,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 50 treesize of output 53 [2023-02-16 00:59:56,465 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 37 treesize of output 35 [2023-02-16 00:59:56,468 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 35 treesize of output 33 [2023-02-16 00:59:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:59:56,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330732692] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:59:56,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:59:56,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2023-02-16 00:59:56,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409391496] [2023-02-16 00:59:56,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:59:56,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 00:59:56,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:59:56,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 00:59:56,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=175, Unknown=1, NotChecked=26, Total=240 [2023-02-16 00:59:56,533 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 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) [2023-02-16 00:59:56,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:59:56,918 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2023-02-16 00:59:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 00:59:56,920 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 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 21 [2023-02-16 00:59:56,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:59:56,920 INFO L225 Difference]: With dead ends: 102 [2023-02-16 00:59:56,920 INFO L226 Difference]: Without dead ends: 100 [2023-02-16 00:59:56,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=306, Unknown=1, NotChecked=36, Total=420 [2023-02-16 00:59:56,921 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 158 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:59:56,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 405 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 327 Invalid, 0 Unknown, 79 Unchecked, 0.3s Time] [2023-02-16 00:59:56,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-16 00:59:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 70. [2023-02-16 00:59:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.353846153846154) internal successors, (88), 69 states have internal predecessors, (88), 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) [2023-02-16 00:59:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2023-02-16 00:59:56,928 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 21 [2023-02-16 00:59:56,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:59:56,929 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2023-02-16 00:59:56,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 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) [2023-02-16 00:59:56,929 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2023-02-16 00:59:56,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 00:59:56,930 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:59:56,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:59:56,941 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 00:59:57,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:59:57,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-02-16 00:59:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:59:57,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1635781222, now seen corresponding path program 1 times [2023-02-16 00:59:57,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:59:57,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470059811] [2023-02-16 00:59:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:59:57,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:59:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:59:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:59:57,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:59:57,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470059811] [2023-02-16 00:59:57,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470059811] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:59:57,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546315404] [2023-02-16 00:59:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:59:57,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:59:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:59:57,525 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 00:59:57,528 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 00:59:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:59:57,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 59 conjunts are in the unsatisfiable core [2023-02-16 00:59:57,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:59:57,621 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 00:59:57,664 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-16 00:59:57,664 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 1 case distinctions, treesize of input 27 treesize of output 15 [2023-02-16 00:59:57,676 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-02-16 00:59:57,677 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 1 case distinctions, treesize of input 27 treesize of output 19 [2023-02-16 00:59:57,686 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 00:59:57,686 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 11 treesize of output 11 [2023-02-16 00:59:57,736 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 00:59:57,737 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 1 case distinctions, treesize of input 69 treesize of output 50 [2023-02-16 00:59:57,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-02-16 00:59:57,893 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2023-02-16 00:59:57,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 58 [2023-02-16 00:59:57,899 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 00:59:57,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 26 [2023-02-16 00:59:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:59:57,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:59:58,239 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:59:58,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 17832 treesize of output 16645 [2023-02-16 00:59:59,005 INFO L321 Elim1Store]: treesize reduction 359, result has 54.0 percent of original size [2023-02-16 00:59:59,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 56 case distinctions, treesize of input 245510 treesize of output 228878 [2023-02-16 00:59:59,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:59:59,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 225994 treesize of output 225932 [2023-02-16 00:59:59,686 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 6 treesize of output 4 [2023-02-16 01:00:01,238 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 6 treesize of output 4 [2023-02-16 01:00:01,602 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:00:01,603 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 23 treesize of output 27 [2023-02-16 01:00:01,886 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 6 treesize of output 4