./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 791161d1 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-?-791161d [2022-07-22 14:46:08,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:46:08,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:46:08,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:46:08,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:46:08,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:46:08,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:46:08,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:46:08,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:46:08,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:46:08,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:46:08,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:46:08,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:46:08,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:46:08,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:46:08,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:46:08,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:46:08,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:46:08,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:46:08,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:46:08,344 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:46:08,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:46:08,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:46:08,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:46:08,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:46:08,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:46:08,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:46:08,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:46:08,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:46:08,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:46:08,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:46:08,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:46:08,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:46:08,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:46:08,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:46:08,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:46:08,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:46:08,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:46:08,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:46:08,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:46:08,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:46:08,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:46:08,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 14:46:08,409 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:46:08,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:46:08,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:46:08,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:46:08,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:46:08,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:46:08,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:46:08,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:46:08,411 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:46:08,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:46:08,412 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:46:08,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 14:46:08,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:46:08,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:46:08,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:46:08,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:46:08,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:46:08,414 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:46:08,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:46:08,414 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:46:08,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:46:08,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:46:08,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:46:08,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:46:08,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:46:08,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:46:08,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:46:08,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:46:08,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 14:46:08,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 14:46:08,430 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:46:08,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:46:08,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:46:08,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 [2022-07-22 14:46:08,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:46:08,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:46:08,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:46:08,663 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:46:08,663 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:46:08,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-sorted-1.i [2022-07-22 14:46:08,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53507c064/315ad561343f4528b656136438dc2bbe/FLAG006a3588a [2022-07-22 14:46:09,188 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:46:09,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-1.i [2022-07-22 14:46:09,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53507c064/315ad561343f4528b656136438dc2bbe/FLAG006a3588a [2022-07-22 14:46:09,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53507c064/315ad561343f4528b656136438dc2bbe [2022-07-22 14:46:09,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:46:09,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:46:09,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:46:09,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:46:09,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:46:09,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:46:09" (1/1) ... [2022-07-22 14:46:09,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483ce83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:09, skipping insertion in model container [2022-07-22 14:46:09,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:46:09" (1/1) ... [2022-07-22 14:46:09,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:46:09,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:46:09,958 WARN L230 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] [2022-07-22 14:46:09,962 WARN L230 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] [2022-07-22 14:46:09,965 WARN L230 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] [2022-07-22 14:46:09,966 WARN L230 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] [2022-07-22 14:46:09,970 WARN L230 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] [2022-07-22 14:46:09,971 WARN L230 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] [2022-07-22 14:46:09,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:46:09,980 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:46:10,013 WARN L230 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] [2022-07-22 14:46:10,016 WARN L230 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] [2022-07-22 14:46:10,024 WARN L230 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] [2022-07-22 14:46:10,025 WARN L230 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] [2022-07-22 14:46:10,026 WARN L230 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] [2022-07-22 14:46:10,026 WARN L230 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] [2022-07-22 14:46:10,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:46:10,057 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:46:10,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10 WrapperNode [2022-07-22 14:46:10,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:46:10,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:46:10,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:46:10,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:46:10,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (1/1) ... [2022-07-22 14:46:10,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (1/1) ... [2022-07-22 14:46:10,113 INFO L137 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 186 [2022-07-22 14:46:10,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:46:10,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:46:10,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:46:10,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:46:10,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (1/1) ... [2022-07-22 14:46:10,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (1/1) ... [2022-07-22 14:46:10,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (1/1) ... [2022-07-22 14:46:10,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (1/1) ... [2022-07-22 14:46:10,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (1/1) ... [2022-07-22 14:46:10,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (1/1) ... [2022-07-22 14:46:10,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (1/1) ... [2022-07-22 14:46:10,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:46:10,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:46:10,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:46:10,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:46:10,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (1/1) ... [2022-07-22 14:46:10,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:46:10,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:46:10,175 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) [2022-07-22 14:46:10,176 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 [2022-07-22 14:46:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 14:46:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 14:46:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 14:46:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:46:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 14:46:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 14:46:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 14:46:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 14:46:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:46:10,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:46:10,302 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:46:10,303 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:46:10,570 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:46:10,576 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:46:10,576 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-07-22 14:46:10,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:46:10 BoogieIcfgContainer [2022-07-22 14:46:10,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:46:10,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:46:10,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:46:10,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:46:10,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:46:09" (1/3) ... [2022-07-22 14:46:10,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53937b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:46:10, skipping insertion in model container [2022-07-22 14:46:10,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:46:10" (2/3) ... [2022-07-22 14:46:10,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53937b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:46:10, skipping insertion in model container [2022-07-22 14:46:10,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:46:10" (3/3) ... [2022-07-22 14:46:10,589 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2022-07-22 14:46:10,602 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:46:10,605 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-22 14:46:10,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:46:10,682 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24c118ea, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@aec2203 [2022-07-22 14:46:10,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-22 14:46:10,696 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) [2022-07-22 14:46:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 14:46:10,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:46:10,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 14:46:10,705 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)] === [2022-07-22 14:46:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:46:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash 890153286, now seen corresponding path program 1 times [2022-07-22 14:46:10,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:46:10,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906133421] [2022-07-22 14:46:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:46:10,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:46:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:46:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:46:10,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:46:10,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906133421] [2022-07-22 14:46:10,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906133421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:46:10,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:46:10,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 14:46:10,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990235392] [2022-07-22 14:46:10,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:46:10,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 14:46:10,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:46:10,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 14:46:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:46:10,946 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) [2022-07-22 14:46:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:46:10,971 INFO L93 Difference]: Finished difference Result 106 states and 172 transitions. [2022-07-22 14:46:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 14:46:10,973 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 [2022-07-22 14:46:10,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:46:10,981 INFO L225 Difference]: With dead ends: 106 [2022-07-22 14:46:10,982 INFO L226 Difference]: Without dead ends: 50 [2022-07-22 14:46:10,984 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 [2022-07-22 14:46:10,988 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 [2022-07-22 14:46:10,989 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] [2022-07-22 14:46:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-22 14:46:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-07-22 14:46:11,018 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) [2022-07-22 14:46:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2022-07-22 14:46:11,021 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 6 [2022-07-22 14:46:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:46:11,021 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2022-07-22 14:46:11,022 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) [2022-07-22 14:46:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2022-07-22 14:46:11,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 14:46:11,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:46:11,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:46:11,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 14:46:11,023 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)] === [2022-07-22 14:46:11,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:46:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1806859191, now seen corresponding path program 1 times [2022-07-22 14:46:11,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:46:11,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453399655] [2022-07-22 14:46:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:46:11,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:46:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:46:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:46:11,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:46:11,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453399655] [2022-07-22 14:46:11,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453399655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:46:11,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:46:11,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 14:46:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902298613] [2022-07-22 14:46:11,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:46:11,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 14:46:11,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:46:11,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 14:46:11,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:46:11,111 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) [2022-07-22 14:46:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:46:11,164 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2022-07-22 14:46:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 14:46:11,165 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 [2022-07-22 14:46:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:46:11,168 INFO L225 Difference]: With dead ends: 103 [2022-07-22 14:46:11,170 INFO L226 Difference]: Without dead ends: 55 [2022-07-22 14:46:11,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:46:11,172 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 [2022-07-22 14:46:11,172 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] [2022-07-22 14:46:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-22 14:46:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2022-07-22 14:46:11,183 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) [2022-07-22 14:46:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2022-07-22 14:46:11,185 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 7 [2022-07-22 14:46:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:46:11,188 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-07-22 14:46:11,188 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) [2022-07-22 14:46:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2022-07-22 14:46:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 14:46:11,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:46:11,189 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:46:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 14:46:11,190 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)] === [2022-07-22 14:46:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:46:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash 443319948, now seen corresponding path program 1 times [2022-07-22 14:46:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:46:11,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304938986] [2022-07-22 14:46:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:46:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:46:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:46:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 14:46:11,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:46:11,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304938986] [2022-07-22 14:46:11,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304938986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:46:11,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:46:11,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 14:46:11,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627531497] [2022-07-22 14:46:11,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:46:11,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 14:46:11,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:46:11,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 14:46:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 14:46:11,330 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) [2022-07-22 14:46:11,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:46:11,429 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2022-07-22 14:46:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 14:46:11,429 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 [2022-07-22 14:46:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:46:11,430 INFO L225 Difference]: With dead ends: 87 [2022-07-22 14:46:11,430 INFO L226 Difference]: Without dead ends: 85 [2022-07-22 14:46:11,431 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 [2022-07-22 14:46:11,432 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 129 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 14:46:11,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 65 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 14:46:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-22 14:46:11,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2022-07-22 14:46:11,437 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) [2022-07-22 14:46:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2022-07-22 14:46:11,438 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 11 [2022-07-22 14:46:11,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:46:11,438 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2022-07-22 14:46:11,439 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) [2022-07-22 14:46:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2022-07-22 14:46:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-22 14:46:11,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:46:11,440 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] [2022-07-22 14:46:11,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 14:46:11,440 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)] === [2022-07-22 14:46:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:46:11,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1236050174, now seen corresponding path program 1 times [2022-07-22 14:46:11,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:46:11,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141001846] [2022-07-22 14:46:11,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:46:11,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:46:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:46:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:46:11,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:46:11,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141001846] [2022-07-22 14:46:11,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141001846] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:46:11,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995654755] [2022-07-22 14:46:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:46:11,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:46:11,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:46:11,727 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) [2022-07-22 14:46:11,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 14:46:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:46:11,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-22 14:46:11,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:46:11,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 14:46:11,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-22 14:46:11,925 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 14:46:11,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-22 14:46:11,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 14:46:11,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-22 14:46:11,957 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 14:46:11,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-22 14:46:11,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 14:46:11,982 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 14:46:11,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-22 14:46:12,040 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-22 14:46:12,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-22 14:46:12,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-22 14:46:12,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-22 14:46:12,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-07-22 14:46:12,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 14:46:12,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 14:46:12,366 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:46:12,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-22 14:46:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:46:12,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:46:12,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 57 [2022-07-22 14:46:12,454 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_142 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_142) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)) (forall ((v_ArrVal_141 (Array Int Int))) (= (select (select (store |c_#memory_$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|))) is different from false [2022-07-22 14:46:12,492 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:46:12,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2022-07-22 14:46:12,499 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:46:12,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2022-07-22 14:46:12,509 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:46:12,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-22 14:46:12,522 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:46:12,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-22 14:46:12,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2022-07-22 14:46:12,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-07-22 14:46:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:46:12,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995654755] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 14:46:12,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 14:46:12,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-07-22 14:46:12,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256142620] [2022-07-22 14:46:12,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 14:46:12,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 14:46:12,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:46:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 14:46:12,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=175, Unknown=1, NotChecked=26, Total=240 [2022-07-22 14:46:12,647 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) [2022-07-22 14:46:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:46:13,034 INFO L93 Difference]: Finished difference Result 95 states and 123 transitions. [2022-07-22 14:46:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 14:46:13,034 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 [2022-07-22 14:46:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:46:13,036 INFO L225 Difference]: With dead ends: 95 [2022-07-22 14:46:13,036 INFO L226 Difference]: Without dead ends: 93 [2022-07-22 14:46:13,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=307, Unknown=1, NotChecked=36, Total=420 [2022-07-22 14:46:13,038 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 84 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 14:46:13,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 412 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 228 Invalid, 0 Unknown, 147 Unchecked, 0.2s Time] [2022-07-22 14:46:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-22 14:46:13,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 70. [2022-07-22 14:46:13,046 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) [2022-07-22 14:46:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2022-07-22 14:46:13,046 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 21 [2022-07-22 14:46:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:46:13,047 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2022-07-22 14:46:13,047 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) [2022-07-22 14:46:13,047 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2022-07-22 14:46:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 14:46:13,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:46:13,048 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] [2022-07-22 14:46:13,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 14:46:13,263 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 [2022-07-22 14:46:13,264 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)] === [2022-07-22 14:46:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:46:13,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1635781222, now seen corresponding path program 1 times [2022-07-22 14:46:13,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:46:13,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039730311] [2022-07-22 14:46:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:46:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:46:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:46:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:46:13,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:46:13,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039730311] [2022-07-22 14:46:13,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039730311] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:46:13,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583137097] [2022-07-22 14:46:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:46:13,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:46:13,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:46:13,458 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) [2022-07-22 14:46:13,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 14:46:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:46:13,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-22 14:46:13,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:46:13,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 14:46:13,597 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-07-22 14:46:13,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-07-22 14:46:13,618 INFO L356 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2022-07-22 14:46:13,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 67 [2022-07-22 14:46:13,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-22 14:46:13,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-22 14:46:13,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 14:46:13,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 25 treesize of output 41 [2022-07-22 14:46:13,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 43 [2022-07-22 14:46:13,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 14:46:13,758 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-07-22 14:46:13,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-07-22 14:46:13,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-07-22 14:46:13,794 INFO L356 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-07-22 14:46:13,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 68 [2022-07-22 14:46:13,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-22 14:46:13,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 14:46:13,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 51 [2022-07-22 14:46:13,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 14:46:13,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 14:46:13,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 42 [2022-07-22 14:46:13,924 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-22 14:46:13,935 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 14:46:13,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-22 14:46:14,017 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 14:46:14,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 50 [2022-07-22 14:46:14,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-22 14:46:14,183 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-22 14:46:14,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2022-07-22 14:46:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:46:14,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:46:16,664 INFO L356 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2022-07-22 14:46:16,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 321 treesize of output 296 [2022-07-22 14:46:16,828 INFO L356 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2022-07-22 14:46:16,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 534 treesize of output 454 [2022-07-22 14:46:16,911 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:46:16,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 454 treesize of output 466 [2022-07-22 14:46:16,996 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:46:16,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 466 treesize of output 478 [2022-07-22 14:46:17,135 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:46:17,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 890 treesize of output 992 [2022-07-22 14:46:17,308 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:46:17,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1610 treesize of output 1644 [2022-07-22 14:46:17,628 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:46:17,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 4342 treesize of output 4328 [2022-07-22 14:46:18,540 INFO L356 Elim1Store]: treesize reduction 8, result has 96.4 percent of original size [2022-07-22 14:46:18,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 27353 treesize of output 27223 [2022-07-22 14:47:16,137 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-22 14:47:16,785 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-22 14:47:17,189 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-22 14:47:17,278 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-22 14:47:17,506 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-22 14:48:03,375 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-22 14:48:04,005 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-22 14:48:33,600 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-22 14:48:41,394 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:48:41,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 33 [2022-07-22 14:48:41,558 WARN L234 Elim1Store]: Array PQE input equivalent to true