./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Addition01-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/recursive/Addition01-2.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 4af9e26294eb81d37b6ccb692d0b40e4bed5b0d6d3dd72d6af1a80634692c297 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:58:41,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:58:41,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:58:41,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:58:41,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:58:41,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:58:41,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:58:41,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:58:41,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:58:41,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:58:41,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:58:41,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:58:41,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:58:41,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:58:41,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:58:41,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:58:41,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:58:41,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:58:41,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:58:41,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:58:41,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:58:41,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:58:41,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:58:41,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:58:41,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:58:41,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:58:41,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:58:41,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:58:41,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:58:41,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:58:41,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:58:41,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:58:41,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:58:41,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:58:41,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:58:41,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:58:41,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:58:41,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:58:41,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:58:41,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:58:41,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:58:41,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 00:58:41,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:58:41,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:58:41,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:58:41,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:58:41,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:58:41,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:58:41,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:58:41,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:58:41,353 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:58:41,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:58:41,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:58:41,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 00:58:41,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:58:41,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:58:41,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:58:41,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:58:41,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:58:41,355 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:58:41,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:58:41,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:58:41,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:58:41,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:58:41,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:58:41,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:58:41,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:58:41,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:58:41,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:58:41,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:58:41,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 00:58:41,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 00:58:41,357 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:58:41,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:58:41,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:58:41,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4af9e26294eb81d37b6ccb692d0b40e4bed5b0d6d3dd72d6af1a80634692c297 [2021-12-28 00:58:41,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:58:41,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:58:41,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:58:41,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:58:41,651 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:58:41,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Addition01-2.c [2021-12-28 00:58:41,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4cc3fd91/dd8c47cf92104f918ded24b04de83d4e/FLAG3c9887b96 [2021-12-28 00:58:42,020 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:58:42,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Addition01-2.c [2021-12-28 00:58:42,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4cc3fd91/dd8c47cf92104f918ded24b04de83d4e/FLAG3c9887b96 [2021-12-28 00:58:42,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4cc3fd91/dd8c47cf92104f918ded24b04de83d4e [2021-12-28 00:58:42,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:58:42,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:58:42,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:58:42,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:58:42,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:58:42,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adb66b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42, skipping insertion in model container [2021-12-28 00:58:42,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:58:42,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:58:42,142 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/recursive/Addition01-2.c[1126,1139] [2021-12-28 00:58:42,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:58:42,148 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:58:42,158 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/recursive/Addition01-2.c[1126,1139] [2021-12-28 00:58:42,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:58:42,174 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:58:42,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42 WrapperNode [2021-12-28 00:58:42,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:58:42,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:58:42,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:58:42,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:58:42,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,204 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2021-12-28 00:58:42,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:58:42,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:58:42,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:58:42,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:58:42,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:58:42,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:58:42,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:58:42,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:58:42,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (1/1) ... [2021-12-28 00:58:42,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:58:42,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:58:42,260 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) [2021-12-28 00:58:42,279 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 [2021-12-28 00:58:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:58:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:58:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:58:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 00:58:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-12-28 00:58:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-12-28 00:58:42,340 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:58:42,341 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:58:42,464 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:58:42,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:58:42,468 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 00:58:42,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:58:42 BoogieIcfgContainer [2021-12-28 00:58:42,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:58:42,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:58:42,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:58:42,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:58:42,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:58:42" (1/3) ... [2021-12-28 00:58:42,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6420f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:58:42, skipping insertion in model container [2021-12-28 00:58:42,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:58:42" (2/3) ... [2021-12-28 00:58:42,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6420f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:58:42, skipping insertion in model container [2021-12-28 00:58:42,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:58:42" (3/3) ... [2021-12-28 00:58:42,475 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2021-12-28 00:58:42,479 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:58:42,479 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:58:42,526 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:58:42,531 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 00:58:42,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:58:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 00:58:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-28 00:58:42,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:58:42,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:58:42,570 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:58:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:58:42,577 INFO L85 PathProgramCache]: Analyzing trace with hash 663264039, now seen corresponding path program 1 times [2021-12-28 00:58:42,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:58:42,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137072261] [2021-12-28 00:58:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:58:42,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:58:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:58:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 00:58:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:58:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 00:58:42,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:58:42,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137072261] [2021-12-28 00:58:42,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137072261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:58:42,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:58:42,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 00:58:42,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605272957] [2021-12-28 00:58:42,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:58:42,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 00:58:42,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:58:42,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 00:58:42,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 00:58:42,894 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-12-28 00:58:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:58:42,997 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-12-28 00:58:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 00:58:42,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2021-12-28 00:58:43,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:58:43,004 INFO L225 Difference]: With dead ends: 34 [2021-12-28 00:58:43,004 INFO L226 Difference]: Without dead ends: 21 [2021-12-28 00:58:43,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:58:43,008 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:58:43,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 64 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 00:58:43,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-28 00:58:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-28 00:58:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-28 00:58:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-12-28 00:58:43,051 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2021-12-28 00:58:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:58:43,052 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-12-28 00:58:43,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-12-28 00:58:43,053 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-12-28 00:58:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-28 00:58:43,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:58:43,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:58:43,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 00:58:43,073 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:58:43,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:58:43,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1508496640, now seen corresponding path program 1 times [2021-12-28 00:58:43,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:58:43,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065485784] [2021-12-28 00:58:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:58:43,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:58:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:58:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 00:58:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:58:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 00:58:43,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:58:43,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065485784] [2021-12-28 00:58:43,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065485784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:58:43,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:58:43,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 00:58:43,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582761276] [2021-12-28 00:58:43,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:58:43,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 00:58:43,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:58:43,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 00:58:43,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-28 00:58:43,188 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-12-28 00:58:43,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:58:43,261 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2021-12-28 00:58:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 00:58:43,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 14 [2021-12-28 00:58:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:58:43,262 INFO L225 Difference]: With dead ends: 32 [2021-12-28 00:58:43,262 INFO L226 Difference]: Without dead ends: 18 [2021-12-28 00:58:43,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-28 00:58:43,264 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:58:43,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 40 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 00:58:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-28 00:58:43,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-28 00:58:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 00:58:43,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-12-28 00:58:43,268 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2021-12-28 00:58:43,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:58:43,269 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-12-28 00:58:43,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-12-28 00:58:43,269 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-12-28 00:58:43,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 00:58:43,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:58:43,270 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:58:43,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 00:58:43,270 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:58:43,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:58:43,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1330690599, now seen corresponding path program 1 times [2021-12-28 00:58:43,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:58:43,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408618815] [2021-12-28 00:58:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:58:43,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:58:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:58:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 00:58:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:58:43,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 00:58:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:58:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 00:58:43,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:58:43,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408618815] [2021-12-28 00:58:43,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408618815] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:58:43,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950953160] [2021-12-28 00:58:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:58:43,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:58:43,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:58:43,436 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) [2021-12-28 00:58:43,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 00:58:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:58:43,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-28 00:58:43,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:58:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 00:58:43,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 00:58:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 00:58:43,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950953160] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 00:58:43,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 00:58:43,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 18 [2021-12-28 00:58:43,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685518794] [2021-12-28 00:58:43,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 00:58:43,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 00:58:43,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:58:43,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 00:58:43,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-12-28 00:58:43,961 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-28 00:58:44,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:58:44,081 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-12-28 00:58:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 00:58:44,081 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 19 [2021-12-28 00:58:44,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:58:44,081 INFO L225 Difference]: With dead ends: 23 [2021-12-28 00:58:44,081 INFO L226 Difference]: Without dead ends: 0 [2021-12-28 00:58:44,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2021-12-28 00:58:44,083 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:58:44,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 55 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 00:58:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-28 00:58:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-28 00:58:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-12-28 00:58:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-28 00:58:44,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-12-28 00:58:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:58:44,084 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 00:58:44,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-28 00:58:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-28 00:58:44,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-28 00:58:44,086 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-28 00:58:44,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 00:58:44,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:58:44,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-28 00:58:44,329 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-28 00:58:44,329 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-28 00:58:44,329 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2021-12-28 00:58:44,330 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-28 00:58:44,330 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-28 00:58:44,330 INFO L861 garLoopResultBuilder]: At program point L28(lines 28 47) the Hoare annotation is: true [2021-12-28 00:58:44,330 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2021-12-28 00:58:44,330 INFO L858 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2021-12-28 00:58:44,331 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-12-28 00:58:44,331 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (or (not (<= |ULTIMATE.start_main_~n~0#1| 0)) (= |ULTIMATE.start_main_~n~0#1| 0)) [2021-12-28 00:58:44,331 INFO L858 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2021-12-28 00:58:44,331 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2021-12-28 00:58:44,331 INFO L854 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (<= addition_~n 0) (not (= |addition_#in~n| 0)) (= |addition_#in~n| addition_~n)) [2021-12-28 00:58:44,331 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 24) no Hoare annotation was computed. [2021-12-28 00:58:44,332 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-12-28 00:58:44,332 INFO L858 garLoopResultBuilder]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2021-12-28 00:58:44,332 INFO L854 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (<= 1 addition_~n) (= |addition_#in~n| addition_~n)) [2021-12-28 00:58:44,332 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 21) no Hoare annotation was computed. [2021-12-28 00:58:44,332 INFO L858 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-12-28 00:58:44,332 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-12-28 00:58:44,332 INFO L861 garLoopResultBuilder]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2021-12-28 00:58:44,333 INFO L858 garLoopResultBuilder]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2021-12-28 00:58:44,335 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-28 00:58:44,336 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 00:58:44,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 12:58:44 BoogieIcfgContainer [2021-12-28 00:58:44,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 00:58:44,342 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 00:58:44,342 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 00:58:44,342 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 00:58:44,343 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:58:42" (3/4) ... [2021-12-28 00:58:44,344 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-28 00:58:44,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2021-12-28 00:58:44,351 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-28 00:58:44,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-28 00:58:44,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-28 00:58:44,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-28 00:58:44,372 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 00:58:44,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 00:58:44,373 INFO L158 Benchmark]: Toolchain (without parser) took 2331.38ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 42.1MB in the beginning and 32.7MB in the end (delta: 9.4MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2021-12-28 00:58:44,373 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 43.4MB in the beginning and 43.3MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 00:58:44,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 131.54ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 45.4MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 00:58:44,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.17ms. Allocated memory is still 60.8MB. Free memory was 45.2MB in the beginning and 43.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 00:58:44,374 INFO L158 Benchmark]: Boogie Preprocessor took 28.99ms. Allocated memory is still 60.8MB. Free memory was 43.7MB in the beginning and 42.8MB in the end (delta: 940.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 00:58:44,374 INFO L158 Benchmark]: RCFGBuilder took 234.75ms. Allocated memory is still 60.8MB. Free memory was 42.8MB in the beginning and 33.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 00:58:44,374 INFO L158 Benchmark]: TraceAbstraction took 1870.70ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.1MB in the beginning and 35.1MB in the end (delta: -2.0MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-12-28 00:58:44,375 INFO L158 Benchmark]: Witness Printer took 30.49ms. Allocated memory is still 73.4MB. Free memory was 35.1MB in the beginning and 32.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 00:58:44,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 43.4MB in the beginning and 43.3MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 131.54ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 45.4MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.17ms. Allocated memory is still 60.8MB. Free memory was 45.2MB in the beginning and 43.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.99ms. Allocated memory is still 60.8MB. Free memory was 43.7MB in the beginning and 42.8MB in the end (delta: 940.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 234.75ms. Allocated memory is still 60.8MB. Free memory was 42.8MB in the beginning and 33.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1870.70ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.1MB in the beginning and 35.1MB in the end (delta: -2.0MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Witness Printer took 30.49ms. Allocated memory is still 73.4MB. Free memory was 35.1MB in the beginning and 32.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 159 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 115 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 204 IncrementalHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 44 mSDtfsCounter, 204 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 25, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 34 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 463 SizeOfPredicates, 8 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 4/12 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-28 00:58:44,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE