./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.i --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/pthread/lazy01.i -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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --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 08:48:28,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:48:28,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:48:28,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:48:28,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:48:28,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:48:28,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:48:28,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:48:28,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:48:28,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:48:28,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:48:28,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:48:28,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:48:28,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:48:28,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:48:28,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:48:28,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:48:28,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:48:28,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:48:28,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:48:28,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:48:28,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:48:28,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:48:28,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:48:28,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:48:28,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:48:28,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:48:28,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:48:28,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:48:28,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:48:28,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:48:28,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:48:28,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:48:28,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:48:28,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:48:28,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:48:28,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:48:28,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:48:28,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:48:28,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:48:28,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:48:28,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 08:48:28,409 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:48:28,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:48:28,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:48:28,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:48:28,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:48:28,412 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:48:28,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:48:28,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:48:28,413 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:48:28,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:48:28,414 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:48:28,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:48:28,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:48:28,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:48:28,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:48:28,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:48:28,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:48:28,415 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:48:28,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:48:28,415 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:48:28,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:48:28,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:48:28,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:48:28,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:48:28,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:48:28,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:48:28,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:48:28,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:48:28,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:48:28,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:48:28,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:48:28,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:48:28,418 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:48:28,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:48:28,418 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:48:28,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:48:28,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:48:28,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:48:28,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:48:28,752 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:48:28,753 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:48:28,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2023-09-01 08:48:29,851 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:48:30,134 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:48:30,135 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2023-09-01 08:48:30,154 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aeebc5ca/bc95e747185f4eba9b05c7386f5658ce/FLAGff41f6e3b [2023-09-01 08:48:30,167 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aeebc5ca/bc95e747185f4eba9b05c7386f5658ce [2023-09-01 08:48:30,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:48:30,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:48:30,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:48:30,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:48:30,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:48:30,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634f21e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30, skipping insertion in model container [2023-09-01 08:48:30,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:48:30,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:48:30,555 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2023-09-01 08:48:30,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:48:30,577 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:48:30,617 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2023-09-01 08:48:30,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:48:30,678 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:48:30,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30 WrapperNode [2023-09-01 08:48:30,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:48:30,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:48:30,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:48:30,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:48:30,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,728 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2023-09-01 08:48:30,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:48:30,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:48:30,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:48:30,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:48:30,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,771 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:48:30,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:48:30,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:48:30,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:48:30,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:48:30,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:30,814 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 08:48:30,821 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 08:48:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:48:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:48:30,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:48:30,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:48:30,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:48:30,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:48:30,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:48:30,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:48:30,849 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 08:48:30,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:48:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:48:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:48:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:48:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:48:30,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:48:30,852 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 08:48:30,986 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:48:30,988 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:48:31,178 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:48:31,184 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:48:31,184 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 08:48:31,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:48:31 BoogieIcfgContainer [2023-09-01 08:48:31,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:48:31,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:48:31,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:48:31,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:48:31,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:48:30" (1/3) ... [2023-09-01 08:48:31,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8b54cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:48:31, skipping insertion in model container [2023-09-01 08:48:31,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (2/3) ... [2023-09-01 08:48:31,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8b54cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:48:31, skipping insertion in model container [2023-09-01 08:48:31,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:48:31" (3/3) ... [2023-09-01 08:48:31,194 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2023-09-01 08:48:31,201 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:48:31,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:48:31,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 08:48:31,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:48:31,294 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:48:31,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 87 transitions, 198 flow [2023-09-01 08:48:31,375 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2023-09-01 08:48:31,375 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:48:31,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 1/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-09-01 08:48:31,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 87 transitions, 198 flow [2023-09-01 08:48:31,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 67 transitions, 149 flow [2023-09-01 08:48:31,387 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:48:31,394 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 67 transitions, 149 flow [2023-09-01 08:48:31,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 67 transitions, 149 flow [2023-09-01 08:48:31,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 67 transitions, 149 flow [2023-09-01 08:48:31,422 INFO L130 PetriNetUnfolder]: 0/67 cut-off events. [2023-09-01 08:48:31,423 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:48:31,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 67 events. 0/67 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-09-01 08:48:31,424 INFO L119 LiptonReduction]: Number of co-enabled transitions 814 [2023-09-01 08:48:33,775 INFO L134 LiptonReduction]: Checked pairs total: 1727 [2023-09-01 08:48:33,776 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-09-01 08:48:33,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:48:33,798 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;@4e9b330, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:48:33,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 08:48:33,804 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 08:48:33,805 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:48:33,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:33,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:33,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:33,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash -265877263, now seen corresponding path program 1 times [2023-09-01 08:48:33,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:33,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003303902] [2023-09-01 08:48:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:33,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:34,100 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 08:48:34,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:34,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003303902] [2023-09-01 08:48:34,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003303902] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:34,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:34,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:48:34,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695291109] [2023-09-01 08:48:34,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:34,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:48:34,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:34,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:48:34,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:48:34,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 134 [2023-09-01 08:48:34,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 08:48:34,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:34,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 134 [2023-09-01 08:48:34,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:34,322 INFO L130 PetriNetUnfolder]: 285/474 cut-off events. [2023-09-01 08:48:34,322 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-09-01 08:48:34,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 474 events. 285/474 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1667 event pairs, 103 based on Foata normal form. 12/486 useless extension candidates. Maximal degree in co-relation 858. Up to 385 conditions per place. [2023-09-01 08:48:34,339 INFO L137 encePairwiseOnDemand]: 130/134 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-09-01 08:48:34,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 145 flow [2023-09-01 08:48:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:48:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:48:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-09-01 08:48:34,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6393034825870647 [2023-09-01 08:48:34,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-09-01 08:48:34,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-09-01 08:48:34,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:34,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-09-01 08:48:34,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 08:48:34,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 08:48:34,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 08:48:34,384 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 55 flow. Second operand 3 states and 257 transitions. [2023-09-01 08:48:34,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 145 flow [2023-09-01 08:48:34,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 133 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:48:34,390 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 65 flow [2023-09-01 08:48:34,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-09-01 08:48:34,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2023-09-01 08:48:34,397 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 65 flow [2023-09-01 08:48:34,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 08:48:34,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:34,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:34,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:48:34,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:34,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:34,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2006927370, now seen corresponding path program 1 times [2023-09-01 08:48:34,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:34,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458373379] [2023-09-01 08:48:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:34,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:34,576 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 08:48:34,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:34,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458373379] [2023-09-01 08:48:34,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458373379] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:34,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:34,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:48:34,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926811424] [2023-09-01 08:48:34,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:34,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:48:34,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:34,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:48:34,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:48:34,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 134 [2023-09-01 08:48:34,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 08:48:34,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:34,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 134 [2023-09-01 08:48:34,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:34,659 INFO L130 PetriNetUnfolder]: 68/171 cut-off events. [2023-09-01 08:48:34,659 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 08:48:34,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 171 events. 68/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 634 event pairs, 13 based on Foata normal form. 50/221 useless extension candidates. Maximal degree in co-relation 166. Up to 117 conditions per place. [2023-09-01 08:48:34,661 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 24 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-09-01 08:48:34,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 146 flow [2023-09-01 08:48:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:48:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:48:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-09-01 08:48:34,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6069651741293532 [2023-09-01 08:48:34,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-09-01 08:48:34,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-09-01 08:48:34,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:34,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-09-01 08:48:34,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 08:48:34,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 08:48:34,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 08:48:34,666 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 65 flow. Second operand 3 states and 244 transitions. [2023-09-01 08:48:34,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 146 flow [2023-09-01 08:48:34,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:48:34,667 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 72 flow [2023-09-01 08:48:34,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-09-01 08:48:34,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-09-01 08:48:34,668 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 72 flow [2023-09-01 08:48:34,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 08:48:34,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:34,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:34,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:48:34,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:34,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:34,670 INFO L85 PathProgramCache]: Analyzing trace with hash 202521017, now seen corresponding path program 1 times [2023-09-01 08:48:34,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:34,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927810168] [2023-09-01 08:48:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:34,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:34,717 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 08:48:34,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:34,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927810168] [2023-09-01 08:48:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927810168] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:34,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:34,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:48:34,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874878439] [2023-09-01 08:48:34,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:34,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:48:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:34,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:48:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:48:34,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 134 [2023-09-01 08:48:34,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 08:48:34,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:34,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 134 [2023-09-01 08:48:34,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:34,820 INFO L130 PetriNetUnfolder]: 75/176 cut-off events. [2023-09-01 08:48:34,820 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-09-01 08:48:34,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 176 events. 75/176 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 545 event pairs, 32 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 172. Up to 107 conditions per place. [2023-09-01 08:48:34,824 INFO L137 encePairwiseOnDemand]: 130/134 looper letters, 30 selfloop transitions, 4 changer transitions 2/36 dead transitions. [2023-09-01 08:48:34,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 187 flow [2023-09-01 08:48:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:48:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:48:34,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-09-01 08:48:34,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.621268656716418 [2023-09-01 08:48:34,826 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-09-01 08:48:34,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-09-01 08:48:34,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:34,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-09-01 08:48:34,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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 08:48:34,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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 08:48:34,830 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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 08:48:34,830 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 72 flow. Second operand 4 states and 333 transitions. [2023-09-01 08:48:34,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 187 flow [2023-09-01 08:48:34,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:48:34,832 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 79 flow [2023-09-01 08:48:34,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-09-01 08:48:34,833 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-09-01 08:48:34,834 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 79 flow [2023-09-01 08:48:34,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 08:48:34,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:34,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:34,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:48:34,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:34,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:34,835 INFO L85 PathProgramCache]: Analyzing trace with hash -797098962, now seen corresponding path program 1 times [2023-09-01 08:48:34,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:34,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908106041] [2023-09-01 08:48:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:34,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:34,936 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 08:48:34,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:34,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908106041] [2023-09-01 08:48:34,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908106041] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:34,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:34,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:48:34,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306197857] [2023-09-01 08:48:34,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:34,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:48:34,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:34,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:48:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:48:34,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 134 [2023-09-01 08:48:34,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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 08:48:34,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:34,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 134 [2023-09-01 08:48:34,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:35,053 INFO L130 PetriNetUnfolder]: 72/169 cut-off events. [2023-09-01 08:48:35,054 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-09-01 08:48:35,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 169 events. 72/169 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 526 event pairs, 17 based on Foata normal form. 4/173 useless extension candidates. Maximal degree in co-relation 288. Up to 89 conditions per place. [2023-09-01 08:48:35,055 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 36 selfloop transitions, 5 changer transitions 2/43 dead transitions. [2023-09-01 08:48:35,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 221 flow [2023-09-01 08:48:35,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:48:35,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:48:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 409 transitions. [2023-09-01 08:48:35,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104477611940299 [2023-09-01 08:48:35,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 409 transitions. [2023-09-01 08:48:35,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 409 transitions. [2023-09-01 08:48:35,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:35,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 409 transitions. [2023-09-01 08:48:35,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 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 08:48:35,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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 08:48:35,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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 08:48:35,061 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 79 flow. Second operand 5 states and 409 transitions. [2023-09-01 08:48:35,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 221 flow [2023-09-01 08:48:35,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 213 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 08:48:35,063 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 92 flow [2023-09-01 08:48:35,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-09-01 08:48:35,063 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-09-01 08:48:35,064 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 92 flow [2023-09-01 08:48:35,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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 08:48:35,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:35,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:35,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:48:35,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:35,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1877937628, now seen corresponding path program 1 times [2023-09-01 08:48:35,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:35,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504378157] [2023-09-01 08:48:35,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 08:48:35,101 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 08:48:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 08:48:35,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 08:48:35,144 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 08:48:35,145 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-09-01 08:48:35,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-09-01 08:48:35,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-09-01 08:48:35,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-09-01 08:48:35,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-09-01 08:48:35,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:48:35,150 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-09-01 08:48:35,157 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:48:35,157 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:48:35,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:48:35 BasicIcfg [2023-09-01 08:48:35,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:48:35,197 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:48:35,197 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:48:35,197 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:48:35,197 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:48:31" (3/4) ... [2023-09-01 08:48:35,199 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-09-01 08:48:35,240 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:48:35,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:48:35,241 INFO L158 Benchmark]: Toolchain (without parser) took 5070.52ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 62.8MB in the beginning and 97.7MB in the end (delta: -34.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2023-09-01 08:48:35,241 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:48:35,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.06ms. Allocated memory is still 86.0MB. Free memory was 62.5MB in the beginning and 62.6MB in the end (delta: -78.2kB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2023-09-01 08:48:35,242 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.05ms. Allocated memory is still 86.0MB. Free memory was 62.6MB in the beginning and 60.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:48:35,242 INFO L158 Benchmark]: Boogie Preprocessor took 52.09ms. Allocated memory is still 86.0MB. Free memory was 60.5MB in the beginning and 59.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:48:35,243 INFO L158 Benchmark]: RCFGBuilder took 403.85ms. Allocated memory is still 86.0MB. Free memory was 59.2MB in the beginning and 45.4MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 08:48:35,243 INFO L158 Benchmark]: TraceAbstraction took 4008.04ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 44.6MB in the beginning and 28.8MB in the end (delta: 15.8MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2023-09-01 08:48:35,244 INFO L158 Benchmark]: Witness Printer took 43.93ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 28.8MB in the beginning and 97.7MB in the end (delta: -68.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:48:35,245 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.06ms. Allocated memory is still 86.0MB. Free memory was 62.5MB in the beginning and 62.6MB in the end (delta: -78.2kB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.05ms. Allocated memory is still 86.0MB. Free memory was 62.6MB in the beginning and 60.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.09ms. Allocated memory is still 86.0MB. Free memory was 60.5MB in the beginning and 59.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 403.85ms. Allocated memory is still 86.0MB. Free memory was 59.2MB in the beginning and 45.4MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4008.04ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 44.6MB in the beginning and 28.8MB in the end (delta: 15.8MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * Witness Printer took 43.93ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 28.8MB in the beginning and 97.7MB in the end (delta: -68.9MB). 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: 2.4s, 77 PlacesBefore, 30 PlacesAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 814 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 1727 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1106, independent: 1020, independent conditional: 0, independent unconditional: 1020, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 443, independent: 427, independent conditional: 0, independent unconditional: 427, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1106, independent: 593, independent conditional: 0, independent unconditional: 593, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 443, unknown conditional: 0, unknown unconditional: 443] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={7:0}, t2={5:0}, t3={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=-1, pthread_mutex_lock(&mutex)=0, t1={7:0}, t2={5:0}, t3={6:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=0, pthread_mutex_lock(&mutex)=0, t1={7:0}, t2={5:0}, t3={6:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L709] 1 return 0; [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 119 locations, 5 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: 3.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 240 IncrementalHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 3 mSDtfsCounter, 240 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=4, InterpolantAutomatonStates: 15, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be incorrect! [2023-09-01 08:48:35,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE