./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/ldv-sets/test_mutex_unbounded-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 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:29:12,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:29:12,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:29:12,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:29:12,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:29:12,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:29:12,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:29:12,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:29:12,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:29:12,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:29:12,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:29:12,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:29:12,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:29:12,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:29:12,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:29:12,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:29:12,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:29:12,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:29:12,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:29:12,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:29:12,466 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:29:12,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:29:12,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:29:12,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:29:12,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:29:12,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:29:12,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:29:12,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:29:12,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:29:12,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:29:12,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:29:12,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:29:12,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:29:12,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:29:12,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:29:12,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:29:12,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:29:12,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:29:12,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:29:12,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:29:12,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:29:12,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:29:12,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:29:12,512 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:29:12,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:29:12,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:29:12,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:29:12,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:29:12,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:29:12,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:29:12,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:29:12,515 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:29:12,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:29:12,516 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:29:12,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:29:12,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:29:12,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:29:12,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:29:12,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:29:12,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:29:12,517 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:29:12,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:29:12,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:29:12,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:29:12,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:29:12,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:29:12,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:29:12,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:29:12,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:29:12,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:29:12,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:29:12,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:29:12,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:29:12,521 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:29:12,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:29:12,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:29:12,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 [2022-07-12 03:29:12,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:29:12,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:29:12,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:29:12,802 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:29:12,803 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:29:12,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2022-07-12 03:29:12,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5e07fdd/d5b98aefcf4f46d08fbfaf4971b13fe9/FLAGcd66b90d7 [2022-07-12 03:29:13,336 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:29:13,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2022-07-12 03:29:13,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5e07fdd/d5b98aefcf4f46d08fbfaf4971b13fe9/FLAGcd66b90d7 [2022-07-12 03:29:13,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5e07fdd/d5b98aefcf4f46d08fbfaf4971b13fe9 [2022-07-12 03:29:13,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:29:13,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:29:13,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:29:13,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:29:13,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:29:13,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:29:13" (1/1) ... [2022-07-12 03:29:13,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f94835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:13, skipping insertion in model container [2022-07-12 03:29:13,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:29:13" (1/1) ... [2022-07-12 03:29:13,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:29:13,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:29:14,159 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/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2022-07-12 03:29:14,162 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/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2022-07-12 03:29:14,173 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/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2022-07-12 03:29:14,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:29:14,204 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:29:14,267 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/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2022-07-12 03:29:14,268 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/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2022-07-12 03:29:14,268 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/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2022-07-12 03:29:14,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:29:14,298 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:29:14,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14 WrapperNode [2022-07-12 03:29:14,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:29:14,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:29:14,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:29:14,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:29:14,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (1/1) ... [2022-07-12 03:29:14,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (1/1) ... [2022-07-12 03:29:14,344 INFO L137 Inliner]: procedures = 142, calls = 62, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 161 [2022-07-12 03:29:14,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:29:14,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:29:14,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:29:14,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:29:14,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (1/1) ... [2022-07-12 03:29:14,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (1/1) ... [2022-07-12 03:29:14,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (1/1) ... [2022-07-12 03:29:14,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (1/1) ... [2022-07-12 03:29:14,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (1/1) ... [2022-07-12 03:29:14,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (1/1) ... [2022-07-12 03:29:14,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (1/1) ... [2022-07-12 03:29:14,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:29:14,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:29:14,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:29:14,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:29:14,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (1/1) ... [2022-07-12 03:29:14,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:29:14,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:29:14,412 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) [2022-07-12 03:29:14,423 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 [2022-07-12 03:29:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-07-12 03:29:14,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-07-12 03:29:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-07-12 03:29:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-07-12 03:29:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 03:29:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:29:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 03:29:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-07-12 03:29:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-07-12 03:29:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 03:29:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 03:29:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 03:29:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:29:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-07-12 03:29:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-07-12 03:29:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:29:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:29:14,552 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:29:14,553 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:29:14,898 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:29:14,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:29:14,905 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-12 03:29:14,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:29:14 BoogieIcfgContainer [2022-07-12 03:29:14,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:29:14,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:29:14,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:29:14,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:29:14,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:29:13" (1/3) ... [2022-07-12 03:29:14,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ceeb80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:29:14, skipping insertion in model container [2022-07-12 03:29:14,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:14" (2/3) ... [2022-07-12 03:29:14,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ceeb80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:29:14, skipping insertion in model container [2022-07-12 03:29:14,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:29:14" (3/3) ... [2022-07-12 03:29:14,920 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2022-07-12 03:29:14,933 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:29:14,933 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-12 03:29:14,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:29:15,011 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@54a88a7f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1b1ef32c [2022-07-12 03:29:15,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 03:29:15,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 60 states have internal predecessors, (76), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 03:29:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 03:29:15,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:15,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:29:15,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:15,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:15,035 INFO L85 PathProgramCache]: Analyzing trace with hash 104123182, now seen corresponding path program 1 times [2022-07-12 03:29:15,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:15,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338655885] [2022-07-12 03:29:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:15,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:15,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:29:15,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338655885] [2022-07-12 03:29:15,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338655885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:29:15,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:29:15,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:29:15,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353879404] [2022-07-12 03:29:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:29:15,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:29:15,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:29:15,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:29:15,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:29:15,221 INFO L87 Difference]: Start difference. First operand has 72 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 60 states have internal predecessors, (76), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:29:15,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:29:15,249 INFO L93 Difference]: Finished difference Result 141 states and 186 transitions. [2022-07-12 03:29:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:29:15,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-12 03:29:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:29:15,257 INFO L225 Difference]: With dead ends: 141 [2022-07-12 03:29:15,257 INFO L226 Difference]: Without dead ends: 67 [2022-07-12 03:29:15,260 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 [2022-07-12 03:29:15,263 INFO L413 NwaCegarLoop]: 83 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, 83 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 [2022-07-12 03:29:15,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:29:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-12 03:29:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-07-12 03:29:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 55 states have internal predecessors, (62), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 03:29:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2022-07-12 03:29:15,298 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 13 [2022-07-12 03:29:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:29:15,299 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2022-07-12 03:29:15,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:29:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2022-07-12 03:29:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 03:29:15,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:15,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:29:15,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:29:15,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:15,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1817192448, now seen corresponding path program 1 times [2022-07-12 03:29:15,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:15,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716406037] [2022-07-12 03:29:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:15,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:15,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:29:15,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716406037] [2022-07-12 03:29:15,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716406037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:29:15,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:29:15,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:29:15,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243130046] [2022-07-12 03:29:15,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:29:15,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 03:29:15,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:29:15,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 03:29:15,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 03:29:15,455 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:29:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:29:15,671 INFO L93 Difference]: Finished difference Result 122 states and 145 transitions. [2022-07-12 03:29:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:29:15,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-12 03:29:15,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:29:15,676 INFO L225 Difference]: With dead ends: 122 [2022-07-12 03:29:15,678 INFO L226 Difference]: Without dead ends: 116 [2022-07-12 03:29:15,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 03:29:15,682 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 58 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:29:15,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 327 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 03:29:15,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-12 03:29:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2022-07-12 03:29:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.2375) internal successors, (99), 83 states have internal predecessors, (99), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 03:29:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2022-07-12 03:29:15,712 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 13 [2022-07-12 03:29:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:29:15,713 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2022-07-12 03:29:15,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:29:15,713 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2022-07-12 03:29:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-12 03:29:15,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:15,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:29:15,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 03:29:15,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:15,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:15,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1399408007, now seen corresponding path program 1 times [2022-07-12 03:29:15,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:15,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961335527] [2022-07-12 03:29:15,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:15,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 03:29:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:15,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:29:15,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961335527] [2022-07-12 03:29:15,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961335527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:29:15,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:29:15,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:29:15,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160137397] [2022-07-12 03:29:15,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:29:15,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:29:15,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:29:15,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:29:15,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:29:15,819 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:29:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:29:15,843 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2022-07-12 03:29:15,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:29:15,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-12 03:29:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:29:15,845 INFO L225 Difference]: With dead ends: 109 [2022-07-12 03:29:15,845 INFO L226 Difference]: Without dead ends: 107 [2022-07-12 03:29:15,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:29:15,847 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:29:15,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:29:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-12 03:29:15,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-07-12 03:29:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 86 states have (on average 1.2209302325581395) internal successors, (105), 89 states have internal predecessors, (105), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (17), 13 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-12 03:29:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 133 transitions. [2022-07-12 03:29:15,868 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 133 transitions. Word has length 15 [2022-07-12 03:29:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:29:15,869 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 133 transitions. [2022-07-12 03:29:15,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:29:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 133 transitions. [2022-07-12 03:29:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-12 03:29:15,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:15,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:29:15,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 03:29:15,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:15,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash 175195298, now seen corresponding path program 1 times [2022-07-12 03:29:15,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:15,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909449017] [2022-07-12 03:29:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 03:29:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:15,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:29:15,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909449017] [2022-07-12 03:29:15,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909449017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:29:15,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:29:15,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:29:15,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87300258] [2022-07-12 03:29:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:29:15,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:29:15,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:29:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:29:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:29:15,939 INFO L87 Difference]: Start difference. First operand 107 states and 133 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:29:16,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:29:16,043 INFO L93 Difference]: Finished difference Result 183 states and 222 transitions. [2022-07-12 03:29:16,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 03:29:16,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-12 03:29:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:29:16,045 INFO L225 Difference]: With dead ends: 183 [2022-07-12 03:29:16,045 INFO L226 Difference]: Without dead ends: 83 [2022-07-12 03:29:16,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:29:16,047 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 19 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:29:16,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 190 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 03:29:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-12 03:29:16,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2022-07-12 03:29:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 64 states have internal predecessors, (70), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-07-12 03:29:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2022-07-12 03:29:16,054 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 15 [2022-07-12 03:29:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:29:16,055 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2022-07-12 03:29:16,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:29:16,058 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2022-07-12 03:29:16,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-12 03:29:16,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:16,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:29:16,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 03:29:16,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:16,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:16,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1662157324, now seen corresponding path program 1 times [2022-07-12 03:29:16,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:16,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679150488] [2022-07-12 03:29:16,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:16,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 03:29:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:16,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 03:29:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 03:29:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:16,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:29:16,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679150488] [2022-07-12 03:29:16,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679150488] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:29:16,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461387989] [2022-07-12 03:29:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:16,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:29:16,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:29:16,381 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) [2022-07-12 03:29:16,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 03:29:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:16,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-12 03:29:16,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:29:16,723 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 03:29:16,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 03:29:16,968 INFO L356 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-07-12 03:29:16,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 281 [2022-07-12 03:29:16,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:29:17,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:29:17,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:29:17,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:17,452 INFO L356 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2022-07-12 03:29:17,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 162 treesize of output 321 [2022-07-12 03:29:17,496 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 [2022-07-12 03:29:17,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:17,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:17,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:29:17,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:29:17,637 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-07-12 03:29:17,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 138 treesize of output 124 [2022-07-12 03:29:17,669 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-12 03:29:17,684 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 [2022-07-12 03:29:17,706 INFO L356 Elim1Store]: treesize reduction 36, result has 18.2 percent of original size [2022-07-12 03:29:17,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 24 [2022-07-12 03:29:17,714 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 [2022-07-12 03:29:17,952 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 16 treesize of output 8 [2022-07-12 03:29:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:17,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:29:18,207 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:29:18,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 746 treesize of output 735 [2022-07-12 03:29:18,219 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 814 treesize of output 798 [2022-07-12 03:29:18,232 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 974 treesize of output 942 [2022-07-12 03:29:18,249 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 942 treesize of output 934 [2022-07-12 03:29:18,263 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 934 treesize of output 930 [2022-07-12 03:29:18,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:29:18,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:18,480 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 30 treesize of output 28 [2022-07-12 03:29:18,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:18,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:18,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461387989] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:29:18,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:29:18,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-07-12 03:29:18,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781647428] [2022-07-12 03:29:18,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:29:18,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 03:29:18,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:29:18,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 03:29:18,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=952, Unknown=2, NotChecked=0, Total=1056 [2022-07-12 03:29:18,620 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand has 33 states, 28 states have (on average 2.0) internal successors, (56), 25 states have internal predecessors, (56), 8 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-12 03:29:19,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:29:19,996 INFO L93 Difference]: Finished difference Result 239 states and 287 transitions. [2022-07-12 03:29:19,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 03:29:19,996 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 2.0) internal successors, (56), 25 states have internal predecessors, (56), 8 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 31 [2022-07-12 03:29:19,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:29:19,999 INFO L225 Difference]: With dead ends: 239 [2022-07-12 03:29:19,999 INFO L226 Difference]: Without dead ends: 208 [2022-07-12 03:29:20,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=351, Invalid=2197, Unknown=2, NotChecked=0, Total=2550 [2022-07-12 03:29:20,001 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 596 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:29:20,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 728 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 03:29:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-12 03:29:20,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 138. [2022-07-12 03:29:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 111 states have (on average 1.2252252252252251) internal successors, (136), 116 states have internal predecessors, (136), 14 states have call successors, (14), 8 states have call predecessors, (14), 10 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2022-07-12 03:29:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 170 transitions. [2022-07-12 03:29:20,022 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 170 transitions. Word has length 31 [2022-07-12 03:29:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:29:20,023 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 170 transitions. [2022-07-12 03:29:20,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 2.0) internal successors, (56), 25 states have internal predecessors, (56), 8 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-12 03:29:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 170 transitions. [2022-07-12 03:29:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 03:29:20,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:20,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:29:20,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 03:29:20,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:29:20,244 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:20,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:20,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1949197394, now seen corresponding path program 1 times [2022-07-12 03:29:20,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:20,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668378984] [2022-07-12 03:29:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:20,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:20,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 03:29:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:20,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 03:29:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:21,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 03:29:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat