./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 5fbdf5bf 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 2292364e3df3925555991c57490c078c89b959e0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 09:06:54,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 09:06:54,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 09:06:54,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 09:06:54,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 09:06:54,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 09:06:54,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 09:06:54,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 09:06:54,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 09:06:54,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 09:06:54,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 09:06:54,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 09:06:54,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 09:06:54,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 09:06:54,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 09:06:54,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 09:06:54,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 09:06:54,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 09:06:54,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 09:06:54,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 09:06:54,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 09:06:54,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 09:06:54,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 09:06:54,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 09:06:54,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 09:06:54,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 09:06:54,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 09:06:54,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 09:06:54,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 09:06:54,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 09:06:54,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 09:06:54,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 09:06:54,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 09:06:54,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 09:06:54,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 09:06:54,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 09:06:54,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 09:06:54,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 09:06:54,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 09:06:54,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 09:06:54,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 09:06:54,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 09:06:54,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 09:06:54,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 09:06:54,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 09:06:54,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 09:06:54,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 09:06:54,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 09:06:54,276 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 09:06:54,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 09:06:54,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 09:06:54,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 09:06:54,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 09:06:54,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 09:06:54,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 09:06:54,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 09:06:54,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 09:06:54,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 09:06:54,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 09:06:54,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 09:06:54,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 09:06:54,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 09:06:54,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 09:06:54,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 09:06:54,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:06:54,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 09:06:54,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 09:06:54,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 09:06:54,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 09:06:54,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 09:06:54,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 09:06:54,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 09:06:54,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2292364e3df3925555991c57490c078c89b959e0 [2021-08-29 09:06:54,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 09:06:54,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 09:06:54,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 09:06:54,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 09:06:54,504 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 09:06:54,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test27-2.c [2021-08-29 09:06:54,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c30d3b1/b2a36c7b55c54b01a9cdf2c54581d8ab/FLAGbc9243fdf [2021-08-29 09:06:54,857 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 09:06:54,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test27-2.c [2021-08-29 09:06:54,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c30d3b1/b2a36c7b55c54b01a9cdf2c54581d8ab/FLAGbc9243fdf [2021-08-29 09:06:55,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c30d3b1/b2a36c7b55c54b01a9cdf2c54581d8ab [2021-08-29 09:06:55,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 09:06:55,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 09:06:55,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 09:06:55,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 09:06:55,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 09:06:55,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca8a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55, skipping insertion in model container [2021-08-29 09:06:55,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 09:06:55,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 09:06:55,404 WARN L228 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] [2021-08-29 09:06:55,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:06:55,411 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 09:06:55,423 WARN L228 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] [2021-08-29 09:06:55,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:06:55,431 INFO L208 MainTranslator]: Completed translation [2021-08-29 09:06:55,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55 WrapperNode [2021-08-29 09:06:55,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 09:06:55,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 09:06:55,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 09:06:55,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 09:06:55,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 09:06:55,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 09:06:55,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 09:06:55,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 09:06:55,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 09:06:55,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 09:06:55,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 09:06:55,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 09:06:55,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (1/1) ... [2021-08-29 09:06:55,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:06:55,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:06:55,554 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) [2021-08-29 09:06:55,561 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 [2021-08-29 09:06:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-29 09:06:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 09:06:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-29 09:06:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 09:06:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 09:06:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 09:06:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 09:06:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 09:06:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 09:06:55,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 09:06:55,765 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 09:06:55,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:06:55 BoogieIcfgContainer [2021-08-29 09:06:55,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 09:06:55,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 09:06:55,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 09:06:55,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 09:06:55,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:06:55" (1/3) ... [2021-08-29 09:06:55,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788a8c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:06:55, skipping insertion in model container [2021-08-29 09:06:55,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:06:55" (2/3) ... [2021-08-29 09:06:55,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788a8c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:06:55, skipping insertion in model container [2021-08-29 09:06:55,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:06:55" (3/3) ... [2021-08-29 09:06:55,771 INFO L111 eAbstractionObserver]: Analyzing ICFG test27-2.c [2021-08-29 09:06:55,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 09:06:55,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 09:06:55,801 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 09:06:55,806 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-29 09:06:55,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 09:06:55,821 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) [2021-08-29 09:06:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 09:06:55,824 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:06:55,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:06:55,825 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:06:55,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:06:55,828 INFO L82 PathProgramCache]: Analyzing trace with hash -631347226, now seen corresponding path program 1 times [2021-08-29 09:06:55,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:06:55,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927074959] [2021-08-29 09:06:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:06:55,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:06:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:06:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:06:56,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:06:56,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927074959] [2021-08-29 09:06:56,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927074959] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:06:56,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:06:56,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:06:56,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596661976] [2021-08-29 09:06:56,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:06:56,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:06:56,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:06:56,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:06:56,049 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) [2021-08-29 09:06:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:06:56,120 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2021-08-29 09:06:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:06:56,123 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 [2021-08-29 09:06:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:06:56,128 INFO L225 Difference]: With dead ends: 32 [2021-08-29 09:06:56,128 INFO L226 Difference]: Without dead ends: 15 [2021-08-29 09:06:56,131 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:06:56,136 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.03ms IncrementalHoareTripleChecker+Time [2021-08-29 09:06:56,137 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 55.03ms Time] [2021-08-29 09:06:56,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-29 09:06:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-08-29 09:06:56,162 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) [2021-08-29 09:06:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-08-29 09:06:56,164 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2021-08-29 09:06:56,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:06:56,164 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-08-29 09:06:56,165 INFO L471 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) [2021-08-29 09:06:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-08-29 09:06:56,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 09:06:56,166 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:06:56,166 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:06:56,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 09:06:56,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:06:56,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:06:56,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1434190826, now seen corresponding path program 1 times [2021-08-29 09:06:56,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:06:56,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704584149] [2021-08-29 09:06:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:06:56,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:06:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:06:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:06:56,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:06:56,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704584149] [2021-08-29 09:06:56,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704584149] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 09:06:56,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742133138] [2021-08-29 09:06:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:06:56,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 09:06:56,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:06:56,244 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) [2021-08-29 09:06:56,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 09:06:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:06:56,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 09:06:56,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 09:06:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:06:56,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 09:06:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:06:56,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742133138] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 09:06:56,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 09:06:56,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-08-29 09:06:56,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949365840] [2021-08-29 09:06:56,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 09:06:56,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:06:56,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 09:06:56,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-29 09:06:56,407 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) [2021-08-29 09:06:56,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:06:56,454 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-08-29 09:06:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 09:06:56,454 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 [2021-08-29 09:06:56,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:06:56,455 INFO L225 Difference]: With dead ends: 29 [2021-08-29 09:06:56,455 INFO L226 Difference]: Without dead ends: 20 [2021-08-29 09:06:56,455 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 14.30ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-29 09:06:56,456 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.18ms IncrementalHoareTripleChecker+Time [2021-08-29 09:06:56,456 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 50 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 41.18ms Time] [2021-08-29 09:06:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-29 09:06:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-08-29 09:06:56,459 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) [2021-08-29 09:06:56,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-08-29 09:06:56,459 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2021-08-29 09:06:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:06:56,459 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-08-29 09:06:56,459 INFO L471 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) [2021-08-29 09:06:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-08-29 09:06:56,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 09:06:56,460 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:06:56,460 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:06:56,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 09:06:56,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 09:06:56,677 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:06:56,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:06:56,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1444204464, now seen corresponding path program 2 times [2021-08-29 09:06:56,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:06:56,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829598685] [2021-08-29 09:06:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:06:56,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:06:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:06:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:06:56,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:06:56,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829598685] [2021-08-29 09:06:56,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829598685] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 09:06:56,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942866286] [2021-08-29 09:06:56,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 09:06:56,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 09:06:56,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:06:56,780 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) [2021-08-29 09:06:56,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 09:06:56,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 09:06:56,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 09:06:56,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 09:06:56,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 09:06:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:06:56,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 09:06:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:06:56,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942866286] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 09:06:56,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 09:06:56,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-08-29 09:06:56,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956342914] [2021-08-29 09:06:56,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-29 09:06:56,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:06:56,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-29 09:06:56,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-29 09:06:56,983 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) [2021-08-29 09:06:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:06:57,064 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-08-29 09:06:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-29 09:06:57,065 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 [2021-08-29 09:06:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:06:57,066 INFO L225 Difference]: With dead ends: 41 [2021-08-29 09:06:57,066 INFO L226 Difference]: Without dead ends: 32 [2021-08-29 09:06:57,067 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 49.07ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-29 09:06:57,069 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.56ms IncrementalHoareTripleChecker+Time [2021-08-29 09:06:57,070 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 62.56ms Time] [2021-08-29 09:06:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-29 09:06:57,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-08-29 09:06:57,077 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) [2021-08-29 09:06:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-08-29 09:06:57,078 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 19 [2021-08-29 09:06:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:06:57,079 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-08-29 09:06:57,079 INFO L471 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) [2021-08-29 09:06:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-08-29 09:06:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-29 09:06:57,081 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:06:57,081 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:06:57,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 09:06:57,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-29 09:06:57,286 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:06:57,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:06:57,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1003651516, now seen corresponding path program 3 times [2021-08-29 09:06:57,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:06:57,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002360806] [2021-08-29 09:06:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:06:57,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:06:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:06:57,593 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 09:06:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:06:57,783 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 09:06:57,783 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 09:06:57,784 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 09:06:57,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 09:06:57,789 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 09:06:57,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:06:57 BoogieIcfgContainer [2021-08-29 09:06:57,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 09:06:57,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 09:06:57,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 09:06:57,814 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 09:06:57,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:06:55" (3/4) ... [2021-08-29 09:06:57,815 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 09:06:57,843 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 09:06:57,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 09:06:57,844 INFO L158 Benchmark]: Toolchain (without parser) took 2559.08ms. Allocated memory was 60.8MB in the beginning and 100.7MB in the end (delta: 39.8MB). Free memory was 39.7MB in the beginning and 57.5MB in the end (delta: -17.8MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2021-08-29 09:06:57,844 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 42.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:06:57,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.00ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 29.3MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 09:06:57,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.69ms. Allocated memory is still 60.8MB. Free memory was 29.3MB in the beginning and 43.6MB in the end (delta: -14.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 09:06:57,845 INFO L158 Benchmark]: Boogie Preprocessor took 29.94ms. Allocated memory is still 60.8MB. Free memory was 43.6MB in the beginning and 42.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:06:57,845 INFO L158 Benchmark]: RCFGBuilder took 237.96ms. Allocated memory is still 60.8MB. Free memory was 42.1MB in the beginning and 30.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 09:06:57,846 INFO L158 Benchmark]: TraceAbstraction took 2045.91ms. Allocated memory was 60.8MB in the beginning and 100.7MB in the end (delta: 39.8MB). Free memory was 30.3MB in the beginning and 61.7MB in the end (delta: -31.4MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2021-08-29 09:06:57,846 INFO L158 Benchmark]: Witness Printer took 30.16ms. Allocated memory is still 100.7MB. Free memory was 61.7MB in the beginning and 57.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 09:06:57,847 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 42.7MB in the beginning and 42.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 146.00ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 29.3MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.69ms. Allocated memory is still 60.8MB. Free memory was 29.3MB in the beginning and 43.6MB in the end (delta: -14.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.94ms. Allocated memory is still 60.8MB. Free memory was 43.6MB in the beginning and 42.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 237.96ms. Allocated memory is still 60.8MB. Free memory was 42.1MB in the beginning and 30.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2045.91ms. Allocated memory was 60.8MB in the beginning and 100.7MB in the end (delta: 39.8MB). Free memory was 30.3MB in the beginning and 61.7MB in the end (delta: -31.4MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. * Witness Printer took 30.16ms. Allocated memory is still 100.7MB. Free memory was 61.7MB in the beginning and 57.5MB 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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; [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ [L29] COND FALSE !(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] [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) [L44] COND FALSE !(i < *pa) [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] COND TRUE !check(&cont, i) [L55] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1987.92ms, OverallIterations: 4, TraceHistogramMax: 10, EmptinessCheckTime: 8.17ms, AutomataDifference: 252.41ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.84ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 158.77ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 130.34ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 152 IncrementalHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 0 mSDtfsCounter, 152 mSolverCounterSat, 2.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 71.01ms Time, 0.00ms 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, 0.00ms DumpTime, AutomataMinimizationStatistics: 26.04ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.28ms SsaConstructionTime, 461.17ms SatisfiabilityAnalysisTime, 409.56ms InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 262 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! [2021-08-29 09:06:57,874 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...