./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-rb-sentinel-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 b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:09:03,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:09:03,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:09:03,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:09:03,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:09:03,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:09:03,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:09:03,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:09:03,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:09:03,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:09:03,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:09:03,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:09:03,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:09:03,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:09:03,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:09:03,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:09:03,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:09:03,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:09:03,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:09:03,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:09:03,419 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:09:03,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:09:03,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:09:03,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:09:03,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:09:03,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:09:03,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:09:03,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:09:03,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:09:03,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:09:03,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:09:03,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:09:03,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:09:03,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:09:03,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:09:03,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:09:03,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:09:03,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:09:03,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:09:03,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:09:03,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:09:03,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:09:03,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:09:03,479 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:09:03,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:09:03,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:09:03,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:09:03,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:09:03,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:09:03,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:09:03,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:09:03,482 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:09:03,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:09:03,483 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:09:03,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:09:03,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:09:03,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:09:03,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:09:03,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:09:03,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:09:03,485 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:09:03,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:09:03,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:09:03,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:09:03,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:09:03,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:09:03,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:09:03,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:09:03,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:09:03,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:09:03,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:09:03,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:09:03,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:09:03,488 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:09:03,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:09:03,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:09:03,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2022-07-21 02:09:03,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:09:03,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:09:03,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:09:03,843 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:09:03,844 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:09:03,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2022-07-21 02:09:03,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f7adc241/578e12e1f5a04f398758cadb592e35ee/FLAG4e841d466 [2022-07-21 02:09:04,416 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:09:04,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2022-07-21 02:09:04,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f7adc241/578e12e1f5a04f398758cadb592e35ee/FLAG4e841d466 [2022-07-21 02:09:04,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f7adc241/578e12e1f5a04f398758cadb592e35ee [2022-07-21 02:09:04,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:09:04,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:09:04,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:09:04,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:09:04,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:09:04,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:09:04" (1/1) ... [2022-07-21 02:09:04,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606082e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:04, skipping insertion in model container [2022-07-21 02:09:04,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:09:04" (1/1) ... [2022-07-21 02:09:04,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:09:04,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:09:05,123 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-rb-sentinel-1.i[22534,22547] [2022-07-21 02:09:05,126 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-rb-sentinel-1.i[22606,22619] [2022-07-21 02:09:05,127 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-rb-sentinel-1.i[22746,22759] [2022-07-21 02:09:05,128 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-rb-sentinel-1.i[22820,22833] [2022-07-21 02:09:05,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:09:05,136 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:09:05,177 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-rb-sentinel-1.i[22534,22547] [2022-07-21 02:09:05,178 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-rb-sentinel-1.i[22606,22619] [2022-07-21 02:09:05,179 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-rb-sentinel-1.i[22746,22759] [2022-07-21 02:09:05,180 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-rb-sentinel-1.i[22820,22833] [2022-07-21 02:09:05,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:09:05,207 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:09:05,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05 WrapperNode [2022-07-21 02:09:05,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:09:05,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:09:05,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:09:05,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:09:05,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (1/1) ... [2022-07-21 02:09:05,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (1/1) ... [2022-07-21 02:09:05,253 INFO L137 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 122 [2022-07-21 02:09:05,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:09:05,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:09:05,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:09:05,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:09:05,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (1/1) ... [2022-07-21 02:09:05,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (1/1) ... [2022-07-21 02:09:05,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (1/1) ... [2022-07-21 02:09:05,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (1/1) ... [2022-07-21 02:09:05,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (1/1) ... [2022-07-21 02:09:05,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (1/1) ... [2022-07-21 02:09:05,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (1/1) ... [2022-07-21 02:09:05,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:09:05,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:09:05,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:09:05,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:09:05,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (1/1) ... [2022-07-21 02:09:05,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:09:05,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:09:05,308 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) [2022-07-21 02:09:05,329 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 [2022-07-21 02:09:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 02:09:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 02:09:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 02:09:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:09:05,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 02:09:05,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 02:09:05,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 02:09:05,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:09:05,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:09:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:09:05,427 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:09:05,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:09:05,710 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:09:05,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:09:05,715 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-21 02:09:05,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:09:05 BoogieIcfgContainer [2022-07-21 02:09:05,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:09:05,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:09:05,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:09:05,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:09:05,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:09:04" (1/3) ... [2022-07-21 02:09:05,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbf6587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:09:05, skipping insertion in model container [2022-07-21 02:09:05,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:05" (2/3) ... [2022-07-21 02:09:05,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbf6587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:09:05, skipping insertion in model container [2022-07-21 02:09:05,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:09:05" (3/3) ... [2022-07-21 02:09:05,724 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2022-07-21 02:09:05,736 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:09:05,737 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-21 02:09:05,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:09:05,803 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@2fc00747, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4a798f97 [2022-07-21 02:09:05,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 02:09:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 32 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) [2022-07-21 02:09:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 02:09:05,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:09:05,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 02:09:05,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:09:05,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:09:05,834 INFO L85 PathProgramCache]: Analyzing trace with hash 889968582, now seen corresponding path program 1 times [2022-07-21 02:09:05,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:09:05,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510669321] [2022-07-21 02:09:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:05,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:09:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:06,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:09:06,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510669321] [2022-07-21 02:09:06,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510669321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:09:06,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:09:06,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 02:09:06,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481132654] [2022-07-21 02:09:06,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:09:06,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 02:09:06,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:09:06,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 02:09:06,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:09:06,095 INFO L87 Difference]: Start difference. First operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 32 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) 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) [2022-07-21 02:09:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:09:06,112 INFO L93 Difference]: Finished difference Result 61 states and 98 transitions. [2022-07-21 02:09:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 02:09:06,117 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 [2022-07-21 02:09:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:09:06,123 INFO L225 Difference]: With dead ends: 61 [2022-07-21 02:09:06,123 INFO L226 Difference]: Without dead ends: 27 [2022-07-21 02:09:06,126 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 [2022-07-21 02:09:06,129 INFO L413 NwaCegarLoop]: 38 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, 38 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 [2022-07-21 02:09:06,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:09:06,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-21 02:09:06,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-21 02:09:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:09:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-07-21 02:09:06,153 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 6 [2022-07-21 02:09:06,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:09:06,153 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-07-21 02:09:06,153 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) [2022-07-21 02:09:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-07-21 02:09:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 02:09:06,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:09:06,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:09:06,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:09:06,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:09:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:09:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1806853233, now seen corresponding path program 1 times [2022-07-21 02:09:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:09:06,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686814992] [2022-07-21 02:09:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:06,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:09:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:06,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:09:06,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686814992] [2022-07-21 02:09:06,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686814992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:09:06,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:09:06,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 02:09:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266723685] [2022-07-21 02:09:06,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:09:06,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 02:09:06,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:09:06,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 02:09:06,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 02:09:06,274 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-07-21 02:09:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:09:06,334 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-07-21 02:09:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 02:09:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2022-07-21 02:09:06,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:09:06,335 INFO L225 Difference]: With dead ends: 33 [2022-07-21 02:09:06,335 INFO L226 Difference]: Without dead ends: 31 [2022-07-21 02:09:06,336 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 [2022-07-21 02:09:06,337 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 37 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:09:06,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:09:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-21 02:09:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-07-21 02:09:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-07-21 02:09:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-07-21 02:09:06,350 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 7 [2022-07-21 02:09:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:09:06,351 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-07-21 02:09:06,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-07-21 02:09:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-07-21 02:09:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 02:09:06,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:09:06,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:09:06,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 02:09:06,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:09:06,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:09:06,358 INFO L85 PathProgramCache]: Analyzing trace with hash -856511048, now seen corresponding path program 1 times [2022-07-21 02:09:06,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:09:06,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096561045] [2022-07-21 02:09:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:06,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:09:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:06,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:09:06,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096561045] [2022-07-21 02:09:06,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096561045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:09:06,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:09:06,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 02:09:06,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873399708] [2022-07-21 02:09:06,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:09:06,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 02:09:06,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:09:06,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 02:09:06,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:09:06,516 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-07-21 02:09:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:09:06,613 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-07-21 02:09:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 02:09:06,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 10 [2022-07-21 02:09:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:09:06,615 INFO L225 Difference]: With dead ends: 50 [2022-07-21 02:09:06,615 INFO L226 Difference]: Without dead ends: 48 [2022-07-21 02:09:06,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 02:09:06,619 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:09:06,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 67 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 02:09:06,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-21 02:09:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2022-07-21 02:09:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:09:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-07-21 02:09:06,631 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 10 [2022-07-21 02:09:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:09:06,632 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-07-21 02:09:06,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-07-21 02:09:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-07-21 02:09:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 02:09:06,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:09:06,633 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:09:06,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 02:09:06,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:09:06,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:09:06,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1594081566, now seen corresponding path program 1 times [2022-07-21 02:09:06,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:09:06,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338712353] [2022-07-21 02:09:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:06,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:09:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:06,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:09:06,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338712353] [2022-07-21 02:09:06,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338712353] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:09:06,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363625021] [2022-07-21 02:09:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:06,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:09:06,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:09:06,874 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) [2022-07-21 02:09:06,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 02:09:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:06,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-21 02:09:06,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:09:07,025 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 02:09:07,040 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 02:09:07,040 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 02:09:07,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:07,091 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-07-21 02:09:07,103 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 02:09:07,103 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 16 treesize of output 22 [2022-07-21 02:09:07,111 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 7 treesize of output 3 [2022-07-21 02:09:07,132 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 02:09:07,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 02:09:07,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:07,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:07,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-07-21 02:09:07,194 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-21 02:09:07,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 02:09:07,220 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 19 treesize of output 7 [2022-07-21 02:09:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:07,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:09:07,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:09:07,376 INFO L356 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-07-21 02:09:07,378 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 1 [2022-07-21 02:09:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:07,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363625021] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:09:07,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:09:07,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-07-21 02:09:07,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008386052] [2022-07-21 02:09:07,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:09:07,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 02:09:07,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:09:07,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 02:09:07,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 02:09:07,384 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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) [2022-07-21 02:09:07,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:09:07,610 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-07-21 02:09:07,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 02:09:07,612 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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 13 [2022-07-21 02:09:07,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:09:07,612 INFO L225 Difference]: With dead ends: 38 [2022-07-21 02:09:07,612 INFO L226 Difference]: Without dead ends: 36 [2022-07-21 02:09:07,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-07-21 02:09:07,613 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 66 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:09:07,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 79 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 83 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-07-21 02:09:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-21 02:09:07,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2022-07-21 02:09:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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) [2022-07-21 02:09:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-21 02:09:07,620 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2022-07-21 02:09:07,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:09:07,620 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-21 02:09:07,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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) [2022-07-21 02:09:07,621 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-21 02:09:07,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 02:09:07,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:09:07,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:09:07,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 02:09:07,823 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 [2022-07-21 02:09:07,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:09:07,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:09:07,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1689639521, now seen corresponding path program 1 times [2022-07-21 02:09:07,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:09:07,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456386820] [2022-07-21 02:09:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:07,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:09:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:07,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:09:07,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456386820] [2022-07-21 02:09:07,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456386820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:09:07,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:09:07,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 02:09:07,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094409838] [2022-07-21 02:09:07,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:09:07,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 02:09:07,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:09:07,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 02:09:07,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:09:07,940 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-07-21 02:09:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:09:08,002 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-07-21 02:09:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 02:09:08,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-21 02:09:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:09:08,004 INFO L225 Difference]: With dead ends: 38 [2022-07-21 02:09:08,004 INFO L226 Difference]: Without dead ends: 26 [2022-07-21 02:09:08,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 02:09:08,005 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:09:08,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:09:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-21 02:09:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-21 02:09:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-07-21 02:09:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-07-21 02:09:08,009 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2022-07-21 02:09:08,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:09:08,009 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-07-21 02:09:08,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-07-21 02:09:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-07-21 02:09:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 02:09:08,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:09:08,010 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:09:08,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 02:09:08,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:09:08,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:09:08,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2084817261, now seen corresponding path program 1 times [2022-07-21 02:09:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:09:08,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324775738] [2022-07-21 02:09:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:08,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:09:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:08,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:09:08,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324775738] [2022-07-21 02:09:08,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324775738] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:09:08,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516215946] [2022-07-21 02:09:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:08,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:09:08,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:09:08,080 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) [2022-07-21 02:09:08,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 02:09:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:08,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 02:09:08,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:09:08,214 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-21 02:09:08,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 84 [2022-07-21 02:09:08,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:08,227 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-07-21 02:09:08,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:08,240 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-07-21 02:09:08,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:08,310 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 24 [2022-07-21 02:09:08,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:08,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-07-21 02:09:08,380 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-21 02:09:08,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 84 [2022-07-21 02:09:08,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:08,390 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-07-21 02:09:08,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:08,408 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-07-21 02:09:08,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:09:08,431 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 0 case distinctions, treesize of input 46 treesize of output 19 [2022-07-21 02:09:08,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:08,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-07-21 02:09:08,721 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:08,722 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 56 treesize of output 54 [2022-07-21 02:09:08,727 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 15 treesize of output 7 [2022-07-21 02:09:08,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 02:09:08,752 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 11 treesize of output 7 [2022-07-21 02:09:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:08,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:09:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:08,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516215946] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:09:08,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:09:08,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-21 02:09:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614686105] [2022-07-21 02:09:08,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:09:08,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 02:09:08,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:09:08,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 02:09:08,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 02:09:08,827 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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) [2022-07-21 02:09:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:09:08,896 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-07-21 02:09:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 02:09:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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 17 [2022-07-21 02:09:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:09:08,897 INFO L225 Difference]: With dead ends: 52 [2022-07-21 02:09:08,897 INFO L226 Difference]: Without dead ends: 30 [2022-07-21 02:09:08,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-21 02:09:08,898 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:09:08,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 76 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2022-07-21 02:09:08,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-21 02:09:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-07-21 02:09:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:09:08,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-07-21 02:09:08,903 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2022-07-21 02:09:08,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:09:08,903 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-07-21 02:09:08,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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) [2022-07-21 02:09:08,904 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-07-21 02:09:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 02:09:08,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:09:08,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:09:08,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 02:09:09,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 02:09:09,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 02:09:09,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:09:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1088473273, now seen corresponding path program 1 times [2022-07-21 02:09:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:09:09,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758460099] [2022-07-21 02:09:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:09:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:09,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:09:09,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758460099] [2022-07-21 02:09:09,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758460099] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:09:09,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706679058] [2022-07-21 02:09:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:09:09,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:09:09,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:09:09,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:09:09,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 02:09:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:09:09,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-21 02:09:09,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:09:09,564 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 02:09:09,564 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-07-21 02:09:09,596 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 [2022-07-21 02:09:09,605 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 02:09:09,606 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 [2022-07-21 02:09:09,613 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 [2022-07-21 02:09:09,640 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-07-21 02:09:09,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-07-21 02:09:09,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-21 02:09:09,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-21 02:09:09,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:09,725 INFO L356 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2022-07-21 02:09:09,729 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 54 [2022-07-21 02:09:09,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:09,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:09:09,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-07-21 02:09:09,742 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 12 treesize of output 11 [2022-07-21 02:09:09,761 INFO L356 Elim1Store]: treesize reduction 20, result has 67.2 percent of original size [2022-07-21 02:09:09,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 53 [2022-07-21 02:09:09,925 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 15 treesize of output 7 [2022-07-21 02:09:09,974 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 02:09:09,975 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 27 [2022-07-21 02:09:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:09:09,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:09:10,034 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:10,034 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 1 case distinctions, treesize of input 40 treesize of output 41 [2022-07-21 02:09:10,043 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_513 (Array Int Int)) (v_ArrVal_517 (Array Int Int)) (v_ArrVal_516 (Array Int Int)) (v_arrayElimArr_9 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_9 |c_ULTIMATE.start_main_~end~0#1.offset|))) (or (not (= (select |c_#valid| .cse0) 0)) (not (= |c_ULTIMATE.start_main_~null~0#1.base| (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_9) .cse0 v_ArrVal_517))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_516) .cse0 v_ArrVal_513) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))))) is different from false [2022-07-21 02:09:10,053 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:10,053 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 64 treesize of output 65 [2022-07-21 02:09:10,059 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:10,059 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 56 treesize of output 49 [2022-07-21 02:09:10,111 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:10,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 1632 treesize of output 1245 [2022-07-21 02:09:10,166 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:10,166 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 2703 treesize of output 2614 [2022-07-21 02:09:10,280 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:10,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2632 treesize of output 2314 [2022-07-21 02:09:10,357 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 02:09:10,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1755 treesize of output 1639 [2022-07-21 02:09:10,425 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 759 treesize of output 721 [2022-07-21 02:09:10,480 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 731 treesize of output 669