./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-match-trans.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 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:16:19,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:16:19,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:16:19,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:16:19,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:16:19,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:16:19,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:16:19,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:16:19,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:16:19,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:16:19,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:16:19,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:16:19,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:16:19,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:16:19,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:16:19,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:16:19,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:16:19,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:16:19,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:16:19,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:16:19,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:16:19,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:16:19,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:16:19,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:16:19,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:16:19,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:16:19,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:16:19,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:16:19,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:16:19,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:16:19,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:16:19,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:16:19,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:16:19,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:16:19,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:16:19,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:16:19,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:16:19,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:16:19,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:16:19,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:16:19,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:16:19,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:16:19,407 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:16:19,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:16:19,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:16:19,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:16:19,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:16:19,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:16:19,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:16:19,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:16:19,411 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:16:19,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:16:19,412 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:16:19,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:16:19,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:16:19,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:16:19,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:16:19,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:16:19,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:16:19,413 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:16:19,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:16:19,414 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:16:19,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:16:19,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:16:19,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:16:19,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:16:19,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:16:19,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:16:19,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:16:19,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:16:19,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:16:19,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:16:19,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:16:19,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:16:19,416 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:16:19,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:16:19,417 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:16:19,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:16:19,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:16:19,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:16:19,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:16:19,722 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:16:19,722 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:16:19,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2023-08-31 01:16:20,789 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:16:20,957 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:16:20,958 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2023-08-31 01:16:20,979 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd4999e0/7cd1eacce5f04c958bb66de4c9f67b18/FLAG93627a4a9 [2023-08-31 01:16:20,994 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd4999e0/7cd1eacce5f04c958bb66de4c9f67b18 [2023-08-31 01:16:20,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:16:20,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:16:20,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:16:20,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:16:21,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:16:21,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:16:20" (1/1) ... [2023-08-31 01:16:21,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245cc8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21, skipping insertion in model container [2023-08-31 01:16:21,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:16:20" (1/1) ... [2023-08-31 01:16:21,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:16:21,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:16:21,158 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-match-trans.wvr.c[2954,2967] [2023-08-31 01:16:21,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:16:21,172 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:16:21,193 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-match-trans.wvr.c[2954,2967] [2023-08-31 01:16:21,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:16:21,207 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:16:21,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21 WrapperNode [2023-08-31 01:16:21,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:16:21,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:16:21,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:16:21,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:16:21,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,276 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 211 [2023-08-31 01:16:21,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:16:21,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:16:21,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:16:21,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:16:21,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,311 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:16:21,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:16:21,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:16:21,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:16:21,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (1/1) ... [2023-08-31 01:16:21,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:16:21,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:16:21,346 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) [2023-08-31 01:16:21,372 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 [2023-08-31 01:16:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:16:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:16:21,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:16:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:16:21,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:16:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:16:21,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:16:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:16:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:16:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:16:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:16:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:16:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:16:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:16:21,390 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:16:21,553 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:16:21,555 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:16:21,906 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:16:21,916 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:16:21,920 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 01:16:21,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:16:21 BoogieIcfgContainer [2023-08-31 01:16:21,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:16:21,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:16:21,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:16:21,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:16:21,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:16:20" (1/3) ... [2023-08-31 01:16:21,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d1dc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:16:21, skipping insertion in model container [2023-08-31 01:16:21,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:16:21" (2/3) ... [2023-08-31 01:16:21,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d1dc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:16:21, skipping insertion in model container [2023-08-31 01:16:21,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:16:21" (3/3) ... [2023-08-31 01:16:21,933 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2023-08-31 01:16:21,944 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:16:21,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:16:21,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:16:21,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:16:22,083 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:16:22,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 249 transitions, 522 flow [2023-08-31 01:16:22,273 INFO L130 PetriNetUnfolder]: 13/246 cut-off events. [2023-08-31 01:16:22,274 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:16:22,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 246 events. 13/246 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2023-08-31 01:16:22,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 249 transitions, 522 flow [2023-08-31 01:16:22,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 236 transitions, 490 flow [2023-08-31 01:16:22,294 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:16:22,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 236 transitions, 490 flow [2023-08-31 01:16:22,307 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 236 transitions, 490 flow [2023-08-31 01:16:22,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 236 transitions, 490 flow [2023-08-31 01:16:22,375 INFO L130 PetriNetUnfolder]: 13/236 cut-off events. [2023-08-31 01:16:22,375 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:16:22,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 236 events. 13/236 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 333 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2023-08-31 01:16:22,386 INFO L119 LiptonReduction]: Number of co-enabled transitions 16638 [2023-08-31 01:16:29,416 INFO L134 LiptonReduction]: Checked pairs total: 14490 [2023-08-31 01:16:29,416 INFO L136 LiptonReduction]: Total number of compositions: 272 [2023-08-31 01:16:29,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:16:29,432 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;@52fbfcac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:16:29,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:16:29,439 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-31 01:16:29,439 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:16:29,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:29,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:29,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:16:29,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1045420437, now seen corresponding path program 1 times [2023-08-31 01:16:29,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:29,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618603373] [2023-08-31 01:16:29,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:29,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:16:30,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:30,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618603373] [2023-08-31 01:16:30,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618603373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:30,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:30,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:16:30,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979755752] [2023-08-31 01:16:30,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:30,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:16:30,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:30,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:16:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:16:30,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 521 [2023-08-31 01:16:30,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:30,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:30,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 521 [2023-08-31 01:16:30,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:30,779 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2023-08-31 01:16:30,780 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-31 01:16:30,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 292 event pairs, 3 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 32 conditions per place. [2023-08-31 01:16:30,783 INFO L137 encePairwiseOnDemand]: 516/521 looper letters, 32 selfloop transitions, 5 changer transitions 7/44 dead transitions. [2023-08-31 01:16:30,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 224 flow [2023-08-31 01:16:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:16:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:16:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1275 transitions. [2023-08-31 01:16:30,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40786948176583493 [2023-08-31 01:16:30,808 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1275 transitions. [2023-08-31 01:16:30,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1275 transitions. [2023-08-31 01:16:30,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:30,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1275 transitions. [2023-08-31 01:16:30,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 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) [2023-08-31 01:16:30,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-08-31 01:16:30,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-08-31 01:16:30,832 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 1275 transitions. [2023-08-31 01:16:30,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 224 flow [2023-08-31 01:16:30,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 44 transitions, 192 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:16:30,836 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 57 flow [2023-08-31 01:16:30,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-31 01:16:30,840 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-31 01:16:30,840 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 57 flow [2023-08-31 01:16:30,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:30,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:30,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:30,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:16:30,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:16:30,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:30,843 INFO L85 PathProgramCache]: Analyzing trace with hash 929829681, now seen corresponding path program 2 times [2023-08-31 01:16:30,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:30,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969661754] [2023-08-31 01:16:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:30,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:16:31,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:31,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969661754] [2023-08-31 01:16:31,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969661754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:31,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:31,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:16:31,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339854500] [2023-08-31 01:16:31,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:31,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:16:31,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:31,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:16:31,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:16:31,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 521 [2023-08-31 01:16:31,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 57 flow. Second operand has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:31,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:31,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 521 [2023-08-31 01:16:31,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:31,577 INFO L130 PetriNetUnfolder]: 39/109 cut-off events. [2023-08-31 01:16:31,578 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 01:16:31,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 109 events. 39/109 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 350 event pairs, 2 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 273. Up to 42 conditions per place. [2023-08-31 01:16:31,579 INFO L137 encePairwiseOnDemand]: 516/521 looper letters, 32 selfloop transitions, 6 changer transitions 11/49 dead transitions. [2023-08-31 01:16:31,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 243 flow [2023-08-31 01:16:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:16:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:16:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1278 transitions. [2023-08-31 01:16:31,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088291746641075 [2023-08-31 01:16:31,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1278 transitions. [2023-08-31 01:16:31,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1278 transitions. [2023-08-31 01:16:31,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:31,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1278 transitions. [2023-08-31 01:16:31,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 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) [2023-08-31 01:16:31,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-08-31 01:16:31,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-08-31 01:16:31,596 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 57 flow. Second operand 6 states and 1278 transitions. [2023-08-31 01:16:31,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 243 flow [2023-08-31 01:16:31,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 49 transitions, 239 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-31 01:16:31,599 INFO L231 Difference]: Finished difference. Result has 33 places, 20 transitions, 86 flow [2023-08-31 01:16:31,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=86, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2023-08-31 01:16:31,600 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-31 01:16:31,601 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 86 flow [2023-08-31 01:16:31,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:31,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:31,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:31,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:16:31,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:16:31,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1723380999, now seen corresponding path program 3 times [2023-08-31 01:16:31,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:31,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828263828] [2023-08-31 01:16:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:31,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:16:32,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:32,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828263828] [2023-08-31 01:16:32,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828263828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:32,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:32,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:16:32,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114759297] [2023-08-31 01:16:32,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:32,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:16:32,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:32,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:16:32,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:16:32,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 521 [2023-08-31 01:16:32,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:32,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:32,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 521 [2023-08-31 01:16:32,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:32,210 INFO L130 PetriNetUnfolder]: 30/90 cut-off events. [2023-08-31 01:16:32,210 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-08-31 01:16:32,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 90 events. 30/90 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 258 event pairs, 7 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 277. Up to 37 conditions per place. [2023-08-31 01:16:32,211 INFO L137 encePairwiseOnDemand]: 516/521 looper letters, 26 selfloop transitions, 8 changer transitions 5/39 dead transitions. [2023-08-31 01:16:32,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 222 flow [2023-08-31 01:16:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:16:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:16:32,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1063 transitions. [2023-08-31 01:16:32,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080614203454894 [2023-08-31 01:16:32,216 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1063 transitions. [2023-08-31 01:16:32,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1063 transitions. [2023-08-31 01:16:32,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:32,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1063 transitions. [2023-08-31 01:16:32,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 212.6) internal successors, (1063), 5 states have internal predecessors, (1063), 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) [2023-08-31 01:16:32,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 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) [2023-08-31 01:16:32,225 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 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) [2023-08-31 01:16:32,225 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 86 flow. Second operand 5 states and 1063 transitions. [2023-08-31 01:16:32,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 222 flow [2023-08-31 01:16:32,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 206 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-31 01:16:32,227 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 117 flow [2023-08-31 01:16:32,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2023-08-31 01:16:32,228 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-08-31 01:16:32,228 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 117 flow [2023-08-31 01:16:32,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:32,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:32,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:32,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:16:32,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:16:32,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:32,230 INFO L85 PathProgramCache]: Analyzing trace with hash 541492063, now seen corresponding path program 4 times [2023-08-31 01:16:32,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:32,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950984111] [2023-08-31 01:16:32,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:32,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:16:32,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:32,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950984111] [2023-08-31 01:16:32,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950984111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:32,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:32,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:16:32,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482807184] [2023-08-31 01:16:32,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:32,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:16:32,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:16:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:16:32,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 521 [2023-08-31 01:16:32,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:32,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:32,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 521 [2023-08-31 01:16:32,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:32,865 INFO L130 PetriNetUnfolder]: 30/89 cut-off events. [2023-08-31 01:16:32,865 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2023-08-31 01:16:32,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 89 events. 30/89 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 263 event pairs, 5 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 101. Up to 33 conditions per place. [2023-08-31 01:16:32,866 INFO L137 encePairwiseOnDemand]: 516/521 looper letters, 17 selfloop transitions, 6 changer transitions 19/42 dead transitions. [2023-08-31 01:16:32,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 261 flow [2023-08-31 01:16:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:16:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:16:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1064 transitions. [2023-08-31 01:16:32,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40844529750479847 [2023-08-31 01:16:32,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1064 transitions. [2023-08-31 01:16:32,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1064 transitions. [2023-08-31 01:16:32,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:32,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1064 transitions. [2023-08-31 01:16:32,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 212.8) internal successors, (1064), 5 states have internal predecessors, (1064), 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) [2023-08-31 01:16:32,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 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) [2023-08-31 01:16:32,877 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 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) [2023-08-31 01:16:32,877 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 117 flow. Second operand 5 states and 1064 transitions. [2023-08-31 01:16:32,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 261 flow [2023-08-31 01:16:32,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:16:32,879 INFO L231 Difference]: Finished difference. Result has 39 places, 19 transitions, 112 flow [2023-08-31 01:16:32,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2023-08-31 01:16:32,880 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2023-08-31 01:16:32,880 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 112 flow [2023-08-31 01:16:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:32,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:32,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:32,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:16:32,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:16:32,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:32,882 INFO L85 PathProgramCache]: Analyzing trace with hash -769761031, now seen corresponding path program 5 times [2023-08-31 01:16:32,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:32,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833649802] [2023-08-31 01:16:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:32,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:16:33,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833649802] [2023-08-31 01:16:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833649802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:33,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:33,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:16:33,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193953402] [2023-08-31 01:16:33,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:33,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:16:33,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:33,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:16:33,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:16:33,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 521 [2023-08-31 01:16:33,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:33,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:33,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 521 [2023-08-31 01:16:33,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:33,450 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-31 01:16:33,450 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-31 01:16:33,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 40 events. 8/40 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 91. Up to 19 conditions per place. [2023-08-31 01:16:33,450 INFO L137 encePairwiseOnDemand]: 516/521 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-31 01:16:33,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 30 transitions, 198 flow [2023-08-31 01:16:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:16:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:16:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1261 transitions. [2023-08-31 01:16:33,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40339091490722967 [2023-08-31 01:16:33,454 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1261 transitions. [2023-08-31 01:16:33,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1261 transitions. [2023-08-31 01:16:33,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:33,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1261 transitions. [2023-08-31 01:16:33,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.16666666666666) internal successors, (1261), 6 states have internal predecessors, (1261), 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) [2023-08-31 01:16:33,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-08-31 01:16:33,462 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-08-31 01:16:33,462 INFO L175 Difference]: Start difference. First operand has 39 places, 19 transitions, 112 flow. Second operand 6 states and 1261 transitions. [2023-08-31 01:16:33,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 30 transitions, 198 flow [2023-08-31 01:16:33,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 149 flow, removed 3 selfloop flow, removed 12 redundant places. [2023-08-31 01:16:33,464 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 57 flow [2023-08-31 01:16:33,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=57, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-08-31 01:16:33,465 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-31 01:16:33,465 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 57 flow [2023-08-31 01:16:33,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:33,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:16:33,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:16:33,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:16:33,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:16:33,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:16:33,467 INFO L85 PathProgramCache]: Analyzing trace with hash 163140025, now seen corresponding path program 6 times [2023-08-31 01:16:33,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:16:33,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614030302] [2023-08-31 01:16:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:16:33,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:16:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:16:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:16:33,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:16:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614030302] [2023-08-31 01:16:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614030302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:16:33,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:16:33,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:16:33,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355234645] [2023-08-31 01:16:33,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:16:33,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:16:33,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:16:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:16:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:16:33,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 521 [2023-08-31 01:16:33,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 57 flow. Second operand has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:33,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:16:33,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 521 [2023-08-31 01:16:33,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:16:33,931 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-31 01:16:33,931 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 01:16:33,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 64. Up to 8 conditions per place. [2023-08-31 01:16:33,932 INFO L137 encePairwiseOnDemand]: 516/521 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-31 01:16:33,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 95 flow [2023-08-31 01:16:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:16:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:16:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1249 transitions. [2023-08-31 01:16:33,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39955214331413946 [2023-08-31 01:16:33,936 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1249 transitions. [2023-08-31 01:16:33,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1249 transitions. [2023-08-31 01:16:33,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:16:33,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1249 transitions. [2023-08-31 01:16:33,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.16666666666666) internal successors, (1249), 6 states have internal predecessors, (1249), 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) [2023-08-31 01:16:33,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-08-31 01:16:33,944 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-08-31 01:16:33,944 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 57 flow. Second operand 6 states and 1249 transitions. [2023-08-31 01:16:33,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 95 flow [2023-08-31 01:16:33,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 79 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-31 01:16:33,945 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-31 01:16:33,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-31 01:16:33,946 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-31 01:16:33,947 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-31 01:16:33,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.2) internal successors, (1041), 5 states have internal predecessors, (1041), 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) [2023-08-31 01:16:33,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-31 01:16:33,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-31 01:16:33,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-31 01:16:33,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-31 01:16:33,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 01:16:33,955 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-08-31 01:16:33,957 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 01:16:33,957 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 01:16:33,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 01:16:33 BasicIcfg [2023-08-31 01:16:33,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 01:16:33,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 01:16:33,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 01:16:33,961 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 01:16:33,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:16:21" (3/4) ... [2023-08-31 01:16:33,965 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 01:16:33,969 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-31 01:16:33,970 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-31 01:16:33,970 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-31 01:16:33,974 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-31 01:16:33,975 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 01:16:33,975 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 01:16:33,975 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 01:16:34,020 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 01:16:34,020 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 01:16:34,021 INFO L158 Benchmark]: Toolchain (without parser) took 13023.70ms. Allocated memory was 90.2MB in the beginning and 232.8MB in the end (delta: 142.6MB). Free memory was 70.9MB in the beginning and 193.4MB in the end (delta: -122.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-08-31 01:16:34,021 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 01:16:34,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.34ms. Allocated memory is still 90.2MB. Free memory was 70.6MB in the beginning and 58.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-31 01:16:34,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.84ms. Allocated memory is still 90.2MB. Free memory was 58.9MB in the beginning and 56.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:16:34,023 INFO L158 Benchmark]: Boogie Preprocessor took 36.98ms. Allocated memory is still 90.2MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:16:34,023 INFO L158 Benchmark]: RCFGBuilder took 608.25ms. Allocated memory is still 90.2MB. Free memory was 54.7MB in the beginning and 56.9MB in the end (delta: -2.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2023-08-31 01:16:34,023 INFO L158 Benchmark]: TraceAbstraction took 12033.04ms. Allocated memory was 90.2MB in the beginning and 232.8MB in the end (delta: 142.6MB). Free memory was 56.5MB in the beginning and 196.5MB in the end (delta: -140.0MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2023-08-31 01:16:34,023 INFO L158 Benchmark]: Witness Printer took 59.69ms. Allocated memory is still 232.8MB. Free memory was 196.5MB in the beginning and 193.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:16:34,025 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 65.0MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.34ms. Allocated memory is still 90.2MB. Free memory was 70.6MB in the beginning and 58.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.84ms. Allocated memory is still 90.2MB. Free memory was 58.9MB in the beginning and 56.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.98ms. Allocated memory is still 90.2MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 608.25ms. Allocated memory is still 90.2MB. Free memory was 54.7MB in the beginning and 56.9MB in the end (delta: -2.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12033.04ms. Allocated memory was 90.2MB in the beginning and 232.8MB in the end (delta: 142.6MB). Free memory was 56.5MB in the beginning and 196.5MB in the end (delta: -140.0MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. * Witness Printer took 59.69ms. Allocated memory is still 232.8MB. Free memory was 196.5MB in the beginning and 193.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.1s, 233 PlacesBefore, 26 PlacesAfterwards, 236 TransitionsBefore, 16 TransitionsAfterwards, 16638 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 49 ConcurrentYvCompositions, 13 ChoiceCompositions, 272 TotalNumberOfCompositions, 14490 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14490, independent: 14490, independent conditional: 0, independent unconditional: 14490, 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: 9968, independent: 9968, independent conditional: 0, independent unconditional: 9968, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14490, independent: 4522, independent conditional: 0, independent unconditional: 4522, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 9968, unknown conditional: 0, unknown unconditional: 9968] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, 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: 88]: 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 7 procedures, 372 locations, 4 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: 11.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 686 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 446 mSDsluCounter, 347 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 976 IncrementalHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 110 mSDtfsCounter, 976 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=3, InterpolantAutomatonStates: 34, 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, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 1170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2023-08-31 01:16:34,053 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