./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.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 cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:14:39,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:14:39,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:14:39,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:14:39,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:14:39,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:14:39,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:14:39,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:14:39,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:14:39,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:14:39,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:14:39,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:14:39,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:14:39,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:14:39,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:14:39,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:14:39,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:14:39,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:14:39,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:14:39,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:14:39,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:14:39,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:14:39,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:14:39,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:14:39,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:14:39,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:14:39,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:14:39,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:14:39,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:14:39,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:14:39,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:14:39,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:14:39,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:14:39,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:14:39,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:14:39,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:14:39,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:14:39,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:14:39,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:14:39,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:14:39,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:14:39,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:14:39,326 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:14:39,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:14:39,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:14:39,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:14:39,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:14:39,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:14:39,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:14:39,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:14:39,330 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:14:39,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:14:39,331 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:14:39,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:14:39,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:14:39,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:14:39,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:14:39,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:14:39,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:14:39,332 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:14:39,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:14:39,333 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:14:39,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:14:39,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:14:39,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:14:39,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:14:39,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:14:39,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:14:39,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:14:39,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:14:39,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:14:39,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:14:39,335 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:14:39,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:14:39,335 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:14:39,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:14:39,336 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:14:39,336 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:14:39,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:14:39,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:14:39,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:14:39,631 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:14:39,632 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:14:39,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2023-09-01 12:14:40,685 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:14:40,862 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:14:40,863 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2023-09-01 12:14:40,868 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155a646f0/c382a006c2e6400b9ca9cd8cc39aa699/FLAGf4f181f4a [2023-09-01 12:14:40,878 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155a646f0/c382a006c2e6400b9ca9cd8cc39aa699 [2023-09-01 12:14:40,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:14:40,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:14:40,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:14:40,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:14:40,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:14:40,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:14:40" (1/1) ... [2023-09-01 12:14:40,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c149c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:40, skipping insertion in model container [2023-09-01 12:14:40,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:14:40" (1/1) ... [2023-09-01 12:14:40,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:14:40,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:14:41,038 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2023-09-01 12:14:41,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:14:41,056 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:14:41,090 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2023-09-01 12:14:41,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:14:41,110 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:14:41,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41 WrapperNode [2023-09-01 12:14:41,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:14:41,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:14:41,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:14:41,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:14:41,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,160 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 126 [2023-09-01 12:14:41,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:14:41,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:14:41,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:14:41,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:14:41,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,195 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:14:41,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:14:41,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:14:41,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:14:41,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (1/1) ... [2023-09-01 12:14:41,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:14:41,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:14:41,238 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) [2023-09-01 12:14:41,264 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 [2023-09-01 12:14:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:14:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:14:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:14:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:14:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:14:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:14:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:14:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:14:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:14:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:14:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:14:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:14:41,281 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:14:41,380 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:14:41,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:14:41,659 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:14:41,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:14:41,666 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 12:14:41,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:14:41 BoogieIcfgContainer [2023-09-01 12:14:41,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:14:41,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:14:41,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:14:41,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:14:41,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:14:40" (1/3) ... [2023-09-01 12:14:41,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2068386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:14:41, skipping insertion in model container [2023-09-01 12:14:41,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:41" (2/3) ... [2023-09-01 12:14:41,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2068386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:14:41, skipping insertion in model container [2023-09-01 12:14:41,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:14:41" (3/3) ... [2023-09-01 12:14:41,686 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2023-09-01 12:14:41,693 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:14:41,700 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:14:41,701 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:14:41,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:14:41,777 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 12:14:41,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 149 transitions, 314 flow [2023-09-01 12:14:41,871 INFO L130 PetriNetUnfolder]: 11/147 cut-off events. [2023-09-01 12:14:41,871 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 12:14:41,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 147 events. 11/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 210 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-09-01 12:14:41,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 149 transitions, 314 flow [2023-09-01 12:14:41,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 139 transitions, 290 flow [2023-09-01 12:14:41,884 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:14:41,892 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 139 transitions, 290 flow [2023-09-01 12:14:41,894 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 139 transitions, 290 flow [2023-09-01 12:14:41,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 139 transitions, 290 flow [2023-09-01 12:14:41,926 INFO L130 PetriNetUnfolder]: 11/139 cut-off events. [2023-09-01 12:14:41,926 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 12:14:41,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 139 events. 11/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 209 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-09-01 12:14:41,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 3332 [2023-09-01 12:14:45,883 INFO L134 LiptonReduction]: Checked pairs total: 3073 [2023-09-01 12:14:45,883 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-09-01 12:14:45,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:14:45,901 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@72581a8d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:14:45,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 12:14:45,907 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-09-01 12:14:45,907 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 12:14:45,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:14:45,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:14:45,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 12:14:45,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:14:45,913 INFO L85 PathProgramCache]: Analyzing trace with hash -284635060, now seen corresponding path program 1 times [2023-09-01 12:14:45,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:14:45,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212314599] [2023-09-01 12:14:45,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:14:45,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:14:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:14:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:14:47,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:14:47,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212314599] [2023-09-01 12:14:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212314599] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:14:47,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:14:47,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:14:47,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211737982] [2023-09-01 12:14:47,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:14:47,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 12:14:47,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:14:47,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 12:14:47,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 12:14:47,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 318 [2023-09-01 12:14:47,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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) [2023-09-01 12:14:47,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:14:47,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 318 [2023-09-01 12:14:47,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:14:47,314 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2023-09-01 12:14:47,315 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 12:14:47,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 32 events. 8/32 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 45. Up to 16 conditions per place. [2023-09-01 12:14:47,316 INFO L137 encePairwiseOnDemand]: 314/318 looper letters, 10 selfloop transitions, 3 changer transitions 8/21 dead transitions. [2023-09-01 12:14:47,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 21 transitions, 105 flow [2023-09-01 12:14:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:14:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:14:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 647 transitions. [2023-09-01 12:14:47,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069182389937107 [2023-09-01 12:14:47,331 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 647 transitions. [2023-09-01 12:14:47,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 647 transitions. [2023-09-01 12:14:47,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:14:47,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 647 transitions. [2023-09-01 12:14:47,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 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) [2023-09-01 12:14:47,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 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) [2023-09-01 12:14:47,349 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 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) [2023-09-01 12:14:47,351 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 34 flow. Second operand 5 states and 647 transitions. [2023-09-01 12:14:47,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 21 transitions, 105 flow [2023-09-01 12:14:47,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 91 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 12:14:47,355 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 34 flow [2023-09-01 12:14:47,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2023-09-01 12:14:47,360 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-09-01 12:14:47,360 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 34 flow [2023-09-01 12:14:47,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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) [2023-09-01 12:14:47,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:14:47,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:14:47,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:14:47,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 12:14:47,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:14:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1767346096, now seen corresponding path program 2 times [2023-09-01 12:14:47,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:14:47,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726429560] [2023-09-01 12:14:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:14:47,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:14:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:14:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:14:47,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:14:47,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726429560] [2023-09-01 12:14:47,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726429560] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:14:47,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:14:47,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:14:47,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905720883] [2023-09-01 12:14:47,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:14:47,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:14:47,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:14:47,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:14:47,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:14:48,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 318 [2023-09-01 12:14:48,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 34 flow. Second operand has 5 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 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) [2023-09-01 12:14:48,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:14:48,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 318 [2023-09-01 12:14:48,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:14:48,180 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-09-01 12:14:48,180 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 12:14:48,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 35. Up to 6 conditions per place. [2023-09-01 12:14:48,181 INFO L137 encePairwiseOnDemand]: 314/318 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-09-01 12:14:48,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 58 flow [2023-09-01 12:14:48,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:14:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:14:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 623 transitions. [2023-09-01 12:14:48,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918238993710692 [2023-09-01 12:14:48,183 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 623 transitions. [2023-09-01 12:14:48,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 623 transitions. [2023-09-01 12:14:48,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:14:48,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 623 transitions. [2023-09-01 12:14:48,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 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) [2023-09-01 12:14:48,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 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) [2023-09-01 12:14:48,189 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 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) [2023-09-01 12:14:48,189 INFO L175 Difference]: Start difference. First operand has 19 places, 11 transitions, 34 flow. Second operand 5 states and 623 transitions. [2023-09-01 12:14:48,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 58 flow [2023-09-01 12:14:48,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 12:14:48,190 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-09-01 12:14:48,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-09-01 12:14:48,191 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-09-01 12:14:48,191 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-09-01 12:14:48,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 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) [2023-09-01 12:14:48,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-09-01 12:14:48,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 12:14:48,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 12:14:48,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:14:48,195 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-09-01 12:14:48,198 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 12:14:48,198 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 12:14:48,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:14:48 BasicIcfg [2023-09-01 12:14:48,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 12:14:48,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 12:14:48,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 12:14:48,202 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 12:14:48,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:14:41" (3/4) ... [2023-09-01 12:14:48,204 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 12:14:48,209 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 12:14:48,209 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 12:14:48,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-09-01 12:14:48,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 12:14:48,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 12:14:48,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 12:14:48,242 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 12:14:48,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 12:14:48,243 INFO L158 Benchmark]: Toolchain (without parser) took 7361.93ms. Allocated memory was 67.1MB in the beginning and 121.6MB in the end (delta: 54.5MB). Free memory was 35.2MB in the beginning and 52.4MB in the end (delta: -17.2MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2023-09-01 12:14:48,243 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 30.3MB in the beginning and 30.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 12:14:48,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.85ms. Allocated memory is still 67.1MB. Free memory was 34.9MB in the beginning and 39.6MB in the end (delta: -4.7MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-09-01 12:14:48,244 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.95ms. Allocated memory is still 67.1MB. Free memory was 39.6MB in the beginning and 37.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 12:14:48,244 INFO L158 Benchmark]: Boogie Preprocessor took 42.20ms. Allocated memory is still 67.1MB. Free memory was 37.5MB in the beginning and 36.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 12:14:48,245 INFO L158 Benchmark]: RCFGBuilder took 472.39ms. Allocated memory is still 67.1MB. Free memory was 36.2MB in the beginning and 40.2MB in the end (delta: -4.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 12:14:48,245 INFO L158 Benchmark]: TraceAbstraction took 6523.08ms. Allocated memory was 67.1MB in the beginning and 121.6MB in the end (delta: 54.5MB). Free memory was 39.4MB in the beginning and 55.5MB in the end (delta: -16.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-09-01 12:14:48,245 INFO L158 Benchmark]: Witness Printer took 40.83ms. Allocated memory is still 121.6MB. Free memory was 55.5MB in the beginning and 52.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 12:14:48,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 30.3MB in the beginning and 30.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.85ms. Allocated memory is still 67.1MB. Free memory was 34.9MB in the beginning and 39.6MB in the end (delta: -4.7MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.95ms. Allocated memory is still 67.1MB. Free memory was 39.6MB in the beginning and 37.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.20ms. Allocated memory is still 67.1MB. Free memory was 37.5MB in the beginning and 36.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 472.39ms. Allocated memory is still 67.1MB. Free memory was 36.2MB in the beginning and 40.2MB in the end (delta: -4.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6523.08ms. Allocated memory was 67.1MB in the beginning and 121.6MB in the end (delta: 54.5MB). Free memory was 39.4MB in the beginning and 55.5MB in the end (delta: -16.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 40.83ms. Allocated memory is still 121.6MB. Free memory was 55.5MB in the beginning and 52.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 135 PlacesBefore, 18 PlacesAfterwards, 139 TransitionsBefore, 11 TransitionsAfterwards, 3332 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 31 ConcurrentYvCompositions, 11 ChoiceCompositions, 169 TotalNumberOfCompositions, 3073 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3073, independent: 3073, independent conditional: 0, independent unconditional: 3073, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2027, independent: 2027, independent conditional: 0, independent unconditional: 2027, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3073, independent: 1046, independent conditional: 0, independent unconditional: 1046, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2027, unknown conditional: 0, unknown unconditional: 2027] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 203 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 165 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 276 IncrementalHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 44 mSDtfsCounter, 276 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 642 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 12:14:48,268 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 Result: TRUE