./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/stateful_check.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/stateful_check.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 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 14:39:58,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:39:58,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:39:58,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:39:58,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:39:58,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:39:58,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:39:58,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:39:58,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:39:58,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:39:58,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:39:58,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:39:58,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:39:58,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:39:58,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:39:58,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:39:58,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:39:58,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:39:58,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:39:58,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:39:58,254 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:39:58,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:39:58,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:39:58,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:39:58,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:39:58,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:39:58,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:39:58,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:39:58,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:39:58,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:39:58,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:39:58,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:39:58,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:39:58,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:39:58,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:39:58,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:39:58,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:39:58,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:39:58,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:39:58,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:39:58,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:39:58,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:39:58,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 14:39:58,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:39:58,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:39:58,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:39:58,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:39:58,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:39:58,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:39:58,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:39:58,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:39:58,300 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:39:58,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:39:58,300 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:39:58,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 14:39:58,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:39:58,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:39:58,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:39:58,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:39:58,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:39:58,301 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:39:58,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:39:58,302 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:39:58,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:39:58,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:39:58,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:39:58,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:39:58,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:39:58,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:39:58,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:39:58,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:39:58,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 14:39:58,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 14:39:58,303 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:39:58,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:39:58,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:39:58,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e [2022-07-22 14:39:58,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:39:58,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:39:58,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:39:58,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:39:58,494 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:39:58,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/stateful_check.c [2022-07-22 14:39:58,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598c3e044/c5e7145b90e340bd91a499f6d74594b4/FLAGd641c1790 [2022-07-22 14:39:58,929 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:39:58,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c [2022-07-22 14:39:58,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598c3e044/c5e7145b90e340bd91a499f6d74594b4/FLAGd641c1790 [2022-07-22 14:39:58,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598c3e044/c5e7145b90e340bd91a499f6d74594b4 [2022-07-22 14:39:58,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:39:58,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:39:58,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:39:58,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:39:58,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:39:58,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:39:58" (1/1) ... [2022-07-22 14:39:58,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd41f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:58, skipping insertion in model container [2022-07-22 14:39:58,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:39:58" (1/1) ... [2022-07-22 14:39:58,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:39:58,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:39:59,142 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/ldv-regression/stateful_check.c[298,311] [2022-07-22 14:39:59,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:39:59,181 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:39:59,194 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2022-07-22 14:39:59,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:39:59,224 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:39:59,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59 WrapperNode [2022-07-22 14:39:59,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:39:59,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:39:59,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:39:59,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:39:59,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (1/1) ... [2022-07-22 14:39:59,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (1/1) ... [2022-07-22 14:39:59,256 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 100 [2022-07-22 14:39:59,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:39:59,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:39:59,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:39:59,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:39:59,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (1/1) ... [2022-07-22 14:39:59,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (1/1) ... [2022-07-22 14:39:59,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (1/1) ... [2022-07-22 14:39:59,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (1/1) ... [2022-07-22 14:39:59,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (1/1) ... [2022-07-22 14:39:59,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (1/1) ... [2022-07-22 14:39:59,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (1/1) ... [2022-07-22 14:39:59,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:39:59,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:39:59,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:39:59,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:39:59,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (1/1) ... [2022-07-22 14:39:59,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:39:59,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:39:59,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 14:39:59,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 14:39:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:39:59,353 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2022-07-22 14:39:59,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2022-07-22 14:39:59,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 14:39:59,353 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 14:39:59,353 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 14:39:59,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:39:59,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:39:59,400 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:39:59,401 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:39:59,582 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:39:59,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:39:59,591 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 14:39:59,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:39:59 BoogieIcfgContainer [2022-07-22 14:39:59,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:39:59,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:39:59,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:39:59,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:39:59,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:39:58" (1/3) ... [2022-07-22 14:39:59,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b96fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:39:59, skipping insertion in model container [2022-07-22 14:39:59,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:39:59" (2/3) ... [2022-07-22 14:39:59,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b96fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:39:59, skipping insertion in model container [2022-07-22 14:39:59,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:39:59" (3/3) ... [2022-07-22 14:39:59,612 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2022-07-22 14:39:59,622 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:39:59,625 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 14:39:59,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:39:59,690 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@298fd171, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4158409e [2022-07-22 14:39:59,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 14:39:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 41 states have internal predecessors, (53), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 14:39:59,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 14:39:59,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:39:59,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:39:59,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:39:59,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:39:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2032519849, now seen corresponding path program 1 times [2022-07-22 14:39:59,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:39:59,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966924210] [2022-07-22 14:39:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:39:59,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:39:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:39:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:39:59,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:39:59,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966924210] [2022-07-22 14:39:59,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966924210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:39:59,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:39:59,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 14:39:59,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297440646] [2022-07-22 14:39:59,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:39:59,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 14:39:59,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:39:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 14:39:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:39:59,850 INFO L87 Difference]: Start difference. First operand has 46 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 41 states have internal predecessors, (53), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:39:59,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:39:59,876 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2022-07-22 14:39:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 14:39:59,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-22 14:39:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:39:59,883 INFO L225 Difference]: With dead ends: 87 [2022-07-22 14:39:59,884 INFO L226 Difference]: Without dead ends: 40 [2022-07-22 14:39:59,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:39:59,890 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:39:59,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:39:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-22 14:39:59,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-07-22 14:39:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.4375) internal successors, (46), 35 states have internal predecessors, (46), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 14:39:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 55 transitions. [2022-07-22 14:39:59,922 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 55 transitions. Word has length 8 [2022-07-22 14:39:59,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:39:59,922 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 55 transitions. [2022-07-22 14:39:59,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:39:59,924 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions. [2022-07-22 14:39:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 14:39:59,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:39:59,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:39:59,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 14:39:59,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:39:59,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:39:59,926 INFO L85 PathProgramCache]: Analyzing trace with hash 160489557, now seen corresponding path program 1 times [2022-07-22 14:39:59,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:39:59,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338035790] [2022-07-22 14:39:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:39:59,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:39:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:39:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:39:59,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:39:59,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338035790] [2022-07-22 14:39:59,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338035790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:39:59,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:39:59,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 14:39:59,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507124786] [2022-07-22 14:39:59,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:39:59,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 14:39:59,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:39:59,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 14:39:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:39:59,976 INFO L87 Difference]: Start difference. First operand 40 states and 55 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:40:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:40:00,011 INFO L93 Difference]: Finished difference Result 68 states and 97 transitions. [2022-07-22 14:40:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 14:40:00,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-22 14:40:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:40:00,014 INFO L225 Difference]: With dead ends: 68 [2022-07-22 14:40:00,015 INFO L226 Difference]: Without dead ends: 62 [2022-07-22 14:40:00,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:40:00,016 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 33 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:40:00,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 102 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:40:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-22 14:40:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-07-22 14:40:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 55 states have internal predecessors, (77), 8 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:40:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 90 transitions. [2022-07-22 14:40:00,024 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 90 transitions. Word has length 9 [2022-07-22 14:40:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:40:00,024 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 90 transitions. [2022-07-22 14:40:00,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:40:00,024 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 90 transitions. [2022-07-22 14:40:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-22 14:40:00,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:40:00,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:40:00,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 14:40:00,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:40:00,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:40:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1852157628, now seen corresponding path program 1 times [2022-07-22 14:40:00,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:40:00,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662568053] [2022-07-22 14:40:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:40:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:40:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:40:00,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 14:40:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:40:00,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:40:00,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:40:00,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662568053] [2022-07-22 14:40:00,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662568053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:40:00,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:40:00,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 14:40:00,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049950930] [2022-07-22 14:40:00,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:40:00,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 14:40:00,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:40:00,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 14:40:00,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 14:40:00,072 INFO L87 Difference]: Start difference. First operand 62 states and 90 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:40:00,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:40:00,137 INFO L93 Difference]: Finished difference Result 148 states and 223 transitions. [2022-07-22 14:40:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 14:40:00,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-07-22 14:40:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:40:00,140 INFO L225 Difference]: With dead ends: 148 [2022-07-22 14:40:00,141 INFO L226 Difference]: Without dead ends: 89 [2022-07-22 14:40:00,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 14:40:00,143 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 19 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:40:00,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 119 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:40:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-22 14:40:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2022-07-22 14:40:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 79 states have internal predecessors, (112), 8 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:40:00,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 125 transitions. [2022-07-22 14:40:00,161 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 125 transitions. Word has length 20 [2022-07-22 14:40:00,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:40:00,162 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 125 transitions. [2022-07-22 14:40:00,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:40:00,163 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 125 transitions. [2022-07-22 14:40:00,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 14:40:00,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:40:00,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:40:00,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 14:40:00,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:40:00,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:40:00,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1007794771, now seen corresponding path program 1 times [2022-07-22 14:40:00,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:40:00,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760786179] [2022-07-22 14:40:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:40:00,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:40:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:40:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 14:40:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:40:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:40:00,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:40:00,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760786179] [2022-07-22 14:40:00,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760786179] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:40:00,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437351040] [2022-07-22 14:40:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:40:00,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:40:00,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:40:00,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 14:40:00,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 14:40:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:40:00,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 14:40:00,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:40:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 14:40:00,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:40:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:40:00,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437351040] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 14:40:00,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 14:40:00,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-07-22 14:40:00,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122315819] [2022-07-22 14:40:00,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 14:40:00,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 14:40:00,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:40:00,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 14:40:00,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 14:40:00,418 INFO L87 Difference]: Start difference. First operand 86 states and 125 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 14:40:00,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:40:00,518 INFO L93 Difference]: Finished difference Result 253 states and 388 transitions. [2022-07-22 14:40:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 14:40:00,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2022-07-22 14:40:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:40:00,520 INFO L225 Difference]: With dead ends: 253 [2022-07-22 14:40:00,520 INFO L226 Difference]: Without dead ends: 170 [2022-07-22 14:40:00,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 14:40:00,521 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 96 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 14:40:00,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 173 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 14:40:00,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-22 14:40:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 158. [2022-07-22 14:40:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 148 states have (on average 1.5472972972972974) internal successors, (229), 151 states have internal predecessors, (229), 8 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:40:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 242 transitions. [2022-07-22 14:40:00,533 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 242 transitions. Word has length 27 [2022-07-22 14:40:00,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:40:00,533 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 242 transitions. [2022-07-22 14:40:00,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 14:40:00,533 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 242 transitions. [2022-07-22 14:40:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 14:40:00,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:40:00,534 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:40:00,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 14:40:00,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:40:00,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:40:00,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:40:00,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1977818999, now seen corresponding path program 1 times [2022-07-22 14:40:00,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:40:00,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676139929] [2022-07-22 14:40:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:40:00,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:40:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 14:40:00,835 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 14:40:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 14:40:00,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 14:40:00,884 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 14:40:00,887 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 14:40:00,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 14:40:00,890 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-22 14:40:00,893 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 14:40:00,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 02:40:00 BoogieIcfgContainer [2022-07-22 14:40:00,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 14:40:00,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 14:40:00,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 14:40:00,932 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 14:40:00,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:39:59" (3/4) ... [2022-07-22 14:40:00,934 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 14:40:00,962 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 14:40:00,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 14:40:00,963 INFO L158 Benchmark]: Toolchain (without parser) took 2007.55ms. Allocated memory is still 144.7MB. Free memory was 112.1MB in the beginning and 113.3MB in the end (delta: -1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:40:00,963 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory was 45.5MB in the beginning and 45.5MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:40:00,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.78ms. Allocated memory is still 144.7MB. Free memory was 112.1MB in the beginning and 118.9MB in the end (delta: -6.8MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-22 14:40:00,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.01ms. Allocated memory is still 144.7MB. Free memory was 118.9MB in the beginning and 117.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:40:00,964 INFO L158 Benchmark]: Boogie Preprocessor took 29.47ms. Allocated memory is still 144.7MB. Free memory was 117.6MB in the beginning and 116.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 14:40:00,964 INFO L158 Benchmark]: RCFGBuilder took 305.51ms. Allocated memory is still 144.7MB. Free memory was 116.2MB in the beginning and 103.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 14:40:00,964 INFO L158 Benchmark]: TraceAbstraction took 1338.02ms. Allocated memory is still 144.7MB. Free memory was 103.0MB in the beginning and 116.3MB in the end (delta: -13.3MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2022-07-22 14:40:00,964 INFO L158 Benchmark]: Witness Printer took 30.76ms. Allocated memory is still 144.7MB. Free memory was 115.4MB in the beginning and 113.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 14:40:00,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory was 45.5MB in the beginning and 45.5MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.78ms. Allocated memory is still 144.7MB. Free memory was 112.1MB in the beginning and 118.9MB in the end (delta: -6.8MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.01ms. Allocated memory is still 144.7MB. Free memory was 118.9MB in the beginning and 117.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.47ms. Allocated memory is still 144.7MB. Free memory was 117.6MB in the beginning and 116.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 305.51ms. Allocated memory is still 144.7MB. Free memory was 116.2MB in the beginning and 103.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1338.02ms. Allocated memory is still 144.7MB. Free memory was 103.0MB in the beginning and 116.3MB in the end (delta: -13.3MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Witness Printer took 30.76ms. Allocated memory is still 144.7MB. Free memory was 115.4MB in the beginning and 113.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] int ldv_mutex = 1; [L13] int open_called = 0; VAL [ldv_mutex=1, open_called=0] [L76] int ldv_s_misc_fops_file_operations = 0; [L77] CALL my_init() [L71] open_called = 0 [L72] return 0; VAL [\result=0, ldv_mutex=1, open_called=0] [L77] RET my_init() [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: VAL [__VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L83] COND TRUE ldv_s_misc_fops_file_operations==0 [L84] CALL misc_open() [L59] COND TRUE __VERIFIER_nondet_int() [L61] return 1; VAL [\result=1, ldv_mutex=1, open_called=0] [L84] RET misc_open() [L85] ldv_s_misc_fops_file_operations++ VAL [__VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: VAL [__VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L91] COND TRUE ldv_s_misc_fops_file_operations==1 [L92] CALL misc_read() [L54] return 0; VAL [\result=0, ldv_mutex=1, open_called=0] [L92] RET misc_read() [L93] ldv_s_misc_fops_file_operations++ VAL [__VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L98] case 2: VAL [__VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L99] COND TRUE ldv_s_misc_fops_file_operations==2 [L100] CALL misc_llseek() [L50] return 0; VAL [\result=0, ldv_mutex=1, open_called=0] [L100] RET misc_llseek() [L101] ldv_s_misc_fops_file_operations++ VAL [__VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L98] case 2: [L106] case 3: VAL [__VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L107] COND TRUE ldv_s_misc_fops_file_operations==3 [L108] CALL misc_release() [L36] COND FALSE !(\read(open_called)) VAL [ldv_mutex=1, open_called=0] [L43] CALL mutex_lock() VAL [\old(ldv_mutex)=1, ldv_mutex=1, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, ldv_mutex=1, open_called=0] [L19] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, ldv_mutex=2, open_called=0] [L43] RET mutex_lock() VAL [ldv_mutex=2, open_called=0] [L44] CALL mutex_lock() VAL [\old(ldv_mutex)=2, ldv_mutex=2, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, ldv_mutex=2, open_called=0] [L18] CALL __blast_assert() VAL [\old(ldv_mutex)=2, ldv_mutex=2, open_called=0] [L6] reach_error() VAL [\old(ldv_mutex)=2, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 453 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 247 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 98 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 206 mSDtfsCounter, 98 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 4/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-22 14:40:00,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE