./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test27-2.c --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/ldv-regression/test27-2.c -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 8b17e864f5b8145df67cb2b3dc045f82af33b1bd3c9c5e4c95275bcb385f71da --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:03:43,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:03:43,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:03:43,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:03:43,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:03:43,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:03:43,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:03:43,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:03:43,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:03:43,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:03:43,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:03:43,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:03:43,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:03:43,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:03:43,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:03:43,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:03:43,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:03:43,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:03:43,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:03:43,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:03:43,460 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:03:43,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:03:43,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:03:43,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:03:43,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:03:43,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:03:43,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:03:43,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:03:43,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:03:43,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:03:43,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:03:43,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:03:43,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:03:43,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:03:43,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:03:43,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:03:43,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:03:43,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:03:43,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:03:43,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:03:43,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:03:43,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:03:43,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:03:43,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:03:43,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:03:43,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:03:43,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:03:43,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:03:43,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:03:43,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:03:43,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:03:43,527 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:03:43,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:03:43,528 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:03:43,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:03:43,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:03:43,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:03:43,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:03:43,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:03:43,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:03:43,529 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:03:43,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:03:43,529 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:03:43,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:03:43,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:03:43,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:03:43,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:03:43,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:03:43,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:03:43,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:03:43,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:03:43,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:03:43,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:03:43,532 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:03:43,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:03:43,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:03:43,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b17e864f5b8145df67cb2b3dc045f82af33b1bd3c9c5e4c95275bcb385f71da [2022-07-21 02:03:43,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:03:43,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:03:43,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:03:43,895 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:03:43,896 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:03:43,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test27-2.c [2022-07-21 02:03:43,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3bbf1fc0/493aa9e6507e442dbe0caa99b7a87927/FLAG16f7c7875 [2022-07-21 02:03:44,420 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:03:44,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test27-2.c [2022-07-21 02:03:44,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3bbf1fc0/493aa9e6507e442dbe0caa99b7a87927/FLAG16f7c7875 [2022-07-21 02:03:44,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3bbf1fc0/493aa9e6507e442dbe0caa99b7a87927 [2022-07-21 02:03:44,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:03:44,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:03:44,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:03:44,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:03:44,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:03:44,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718e7810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44, skipping insertion in model container [2022-07-21 02:03:44,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:03:44,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:03:44,635 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-regression/test27-2.c[1224,1237] [2022-07-21 02:03:44,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:03:44,656 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:03:44,729 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-regression/test27-2.c[1224,1237] [2022-07-21 02:03:44,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:03:44,745 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:03:44,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44 WrapperNode [2022-07-21 02:03:44,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:03:44,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:03:44,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:03:44,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:03:44,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,796 INFO L137 Inliner]: procedures = 16, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2022-07-21 02:03:44,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:03:44,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:03:44,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:03:44,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:03:44,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:03:44,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:03:44,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:03:44,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:03:44,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (1/1) ... [2022-07-21 02:03:44,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:03:44,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:03:44,881 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 02:03:44,895 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 02:03:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 02:03:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:03:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:03:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 02:03:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 02:03:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 02:03:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:03:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:03:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 02:03:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 02:03:45,022 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:03:45,023 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:03:45,254 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:03:45,259 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:03:45,265 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 02:03:45,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:03:45 BoogieIcfgContainer [2022-07-21 02:03:45,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:03:45,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:03:45,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:03:45,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:03:45,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:03:44" (1/3) ... [2022-07-21 02:03:45,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3869ed96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:03:45, skipping insertion in model container [2022-07-21 02:03:45,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:44" (2/3) ... [2022-07-21 02:03:45,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3869ed96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:03:45, skipping insertion in model container [2022-07-21 02:03:45,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:03:45" (3/3) ... [2022-07-21 02:03:45,282 INFO L111 eAbstractionObserver]: Analyzing ICFG test27-2.c [2022-07-21 02:03:45,312 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:03:45,313 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:03:45,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:03:45,384 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@7df8f811, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@74f43667 [2022-07-21 02:03:45,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:03:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 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 02:03:45,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 02:03:45,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:03:45,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:03:45,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:03:45,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:03:45,403 INFO L85 PathProgramCache]: Analyzing trace with hash -631347226, now seen corresponding path program 1 times [2022-07-21 02:03:45,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:03:45,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377134037] [2022-07-21 02:03:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:03:45,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:03:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:03:45,625 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 02:03:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:03:45,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377134037] [2022-07-21 02:03:45,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377134037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:03:45,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:03:45,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 02:03:45,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834855451] [2022-07-21 02:03:45,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:03:45,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 02:03:45,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:03:45,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 02:03:45,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:03:45,669 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 02:03:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:03:45,697 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2022-07-21 02:03:45,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 02:03:45,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 02:03:45,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:03:45,713 INFO L225 Difference]: With dead ends: 32 [2022-07-21 02:03:45,713 INFO L226 Difference]: Without dead ends: 15 [2022-07-21 02:03:45,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:03:45,718 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:03:45,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:03:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-21 02:03:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-07-21 02:03:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 02:03:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-07-21 02:03:45,743 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2022-07-21 02:03:45,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:03:45,743 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-07-21 02:03:45,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 02:03:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-07-21 02:03:45,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 02:03:45,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:03:45,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:03:45,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:03:45,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:03:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:03:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1434190826, now seen corresponding path program 1 times [2022-07-21 02:03:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:03:45,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288558563] [2022-07-21 02:03:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:03:45,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:03:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:03:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:03:45,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:03:45,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288558563] [2022-07-21 02:03:45,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288558563] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:03:45,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852456467] [2022-07-21 02:03:45,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:03:45,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:03:45,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:03:45,848 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 02:03:45,852 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 02:03:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:03:45,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 02:03:45,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:03:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:03:46,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:03:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:03:46,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852456467] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:03:46,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:03:46,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-21 02:03:46,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336601389] [2022-07-21 02:03:46,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:03:46,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 02:03:46,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:03:46,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 02:03:46,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-21 02:03:46,031 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 02:03:46,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:03:46,060 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-07-21 02:03:46,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 02:03:46,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 02:03:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:03:46,062 INFO L225 Difference]: With dead ends: 29 [2022-07-21 02:03:46,062 INFO L226 Difference]: Without dead ends: 20 [2022-07-21 02:03:46,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-21 02:03:46,064 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:03:46,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:03:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-21 02:03:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-21 02:03:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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 02:03:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-07-21 02:03:46,069 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2022-07-21 02:03:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:03:46,069 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-07-21 02:03:46,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 02:03:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-07-21 02:03:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 02:03:46,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:03:46,070 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:03:46,100 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 02:03:46,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:03:46,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:03:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:03:46,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1444204464, now seen corresponding path program 2 times [2022-07-21 02:03:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:03:46,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225498674] [2022-07-21 02:03:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:03:46,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:03:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:03:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:03:46,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:03:46,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225498674] [2022-07-21 02:03:46,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225498674] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:03:46,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577672962] [2022-07-21 02:03:46,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 02:03:46,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:03:46,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:03:46,520 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 02:03:46,524 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 02:03:46,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 02:03:46,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:03:46,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 02:03:46,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:03:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:03:46,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:03:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:03:46,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577672962] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:03:46,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:03:46,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-21 02:03:46,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640361174] [2022-07-21 02:03:46,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:03:46,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 02:03:46,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:03:46,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 02:03:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-21 02:03:46,856 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 02:03:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:03:46,905 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-07-21 02:03:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 02:03:46,905 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 19 [2022-07-21 02:03:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:03:46,906 INFO L225 Difference]: With dead ends: 41 [2022-07-21 02:03:46,906 INFO L226 Difference]: Without dead ends: 32 [2022-07-21 02:03:46,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-21 02:03:46,908 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:03:46,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 42 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:03:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-21 02:03:46,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-07-21 02:03:46,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 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 02:03:46,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-07-21 02:03:46,914 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 19 [2022-07-21 02:03:46,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:03:46,914 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-07-21 02:03:46,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 02:03:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-07-21 02:03:46,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-21 02:03:46,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:03:46,915 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:03:46,938 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 02:03:47,116 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,SelfDestructingSolverStorable2 [2022-07-21 02:03:47,116 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:03:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:03:47,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1003651516, now seen corresponding path program 3 times [2022-07-21 02:03:47,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:03:47,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327183845] [2022-07-21 02:03:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:03:47,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:03:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:03:47,541 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 02:03:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:03:47,778 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 02:03:47,778 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 02:03:47,779 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:03:47,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 02:03:47,784 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1] [2022-07-21 02:03:47,787 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:03:47,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:03:47 BoogieIcfgContainer [2022-07-21 02:03:47,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:03:47,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:03:47,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:03:47,824 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:03:47,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:03:45" (3/4) ... [2022-07-21 02:03:47,826 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 02:03:47,869 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 02:03:47,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:03:47,870 INFO L158 Benchmark]: Toolchain (without parser) took 3419.29ms. Allocated memory was 52.4MB in the beginning and 92.3MB in the end (delta: 39.8MB). Free memory was 29.6MB in the beginning and 56.5MB in the end (delta: -26.9MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2022-07-21 02:03:47,870 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:03:47,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.89ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.4MB in the beginning and 46.3MB in the end (delta: -16.9MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-07-21 02:03:47,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.78ms. Allocated memory is still 62.9MB. Free memory was 46.3MB in the beginning and 44.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:03:47,875 INFO L158 Benchmark]: Boogie Preprocessor took 45.70ms. Allocated memory is still 62.9MB. Free memory was 44.5MB in the beginning and 43.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:03:47,875 INFO L158 Benchmark]: RCFGBuilder took 431.24ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 42.7MB in the end (delta: 317.2kB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2022-07-21 02:03:47,876 INFO L158 Benchmark]: TraceAbstraction took 2546.93ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 42.0MB in the beginning and 60.7MB in the end (delta: -18.7MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2022-07-21 02:03:47,876 INFO L158 Benchmark]: Witness Printer took 45.33ms. Allocated memory is still 92.3MB. Free memory was 60.7MB in the beginning and 56.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 02:03:47,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.89ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.4MB in the beginning and 46.3MB in the end (delta: -16.9MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.78ms. Allocated memory is still 62.9MB. Free memory was 46.3MB in the beginning and 44.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.70ms. Allocated memory is still 62.9MB. Free memory was 44.5MB in the beginning and 43.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.24ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 42.7MB in the end (delta: 317.2kB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2546.93ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 42.0MB in the beginning and 60.7MB in the end (delta: -18.7MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. * Witness Printer took 45.33ms. Allocated memory is still 92.3MB. Free memory was 60.7MB in the beginning and 56.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 55]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] struct cont cont; [L24] struct dummy dummy; [L25] struct dummy *dummies[10]; [L26] int a[10]; [L27] int i, *pa; [L28] i = __VERIFIER_nondet_int() [L29] int j = 0; VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=0] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=0] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=1] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=1] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=2] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=2] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=3] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=3] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=4] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=4] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=5] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=5] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=6] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=6] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=7] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=7] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=8] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=8] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=9] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=9] [L29] j++ VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=10] [L29] COND FALSE !(j < 10) VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=10] [L36] COND TRUE i >= 0 && i < 9 [L37] a[i] = i [L38] dummy.array = &a[i] [L39] dummies[i + 1] = &dummy [L40] cont.array = &dummies[0] [L41] EXPR cont.array [L41] EXPR cont.array[i] [L41] EXPR cont.array[i]->array [L41] pa = &cont.array[i]->array[i] [L42] EXPR a[i] VAL [a={7:0}, a[i]=1, cont={9:0}, dummies={5:0}, dummy={6:0}, i=1, j=10, pa={73:17}] [L42] COND TRUE a[i] > 0 [L43] EXPR dummies[i + 1] [L43] EXPR dummies[i + 1]->array [L43] EXPR dummies[i + 1]->array[i] [L43] i = dummies[i + 1]->array[i] - 10 [L44] EXPR \read(*pa) VAL [\read(*pa)=-4, a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=0, j=10, pa={73:17}] [L44] COND FALSE !(i < *pa) [L47] CALL, EXPR check(&cont, i) [L18] EXPR pc->array [L18] EXPR pc->array[i] [L18] EXPR pc->array[i]->array [L18] EXPR pc->array[i]->array[i] [L18] return pc->array[i]->array[i] == i; [L47] RET, EXPR check(&cont, i) [L47] COND TRUE !check(&cont, i) [L55] reach_error() VAL [a={7:0}, cont={9:0}, dummies={5:0}, dummy={6:0}, i=0, j=10, pa={73:17}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 42 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 533 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-21 02:03:47,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE