./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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-atomic/szymanski.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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:23:43,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:23:43,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:23:43,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:23:43,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:23:43,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:23:43,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:23:43,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:23:43,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:23:43,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:23:43,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:23:43,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:23:43,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:23:43,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:23:43,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:23:43,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:23:43,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:23:43,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:23:43,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:23:43,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:23:43,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:23:43,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:23:43,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:23:43,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:23:43,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:23:43,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:23:43,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:23:43,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:23:43,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:23:43,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:23:43,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:23:43,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:23:43,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:23:43,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:23:43,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:23:43,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:23:43,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:23:43,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:23:43,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:23:43,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:23:43,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:23:43,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:23:43,435 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:23:43,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:23:43,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:23:43,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:23:43,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:23:43,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:23:43,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:23:43,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:23:43,438 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:23:43,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:23:43,439 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:23:43,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:23:43,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:23:43,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:23:43,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:23:43,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:23:43,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:23:43,440 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:23:43,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:23:43,440 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:23:43,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:23:43,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:23:43,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:23:43,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:23:43,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:23:43,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:23:43,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:23:43,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:23:43,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:23:43,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:23:43,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:23:43,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:23:43,442 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:23:43,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:23:43,442 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:23:43,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:23:43,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:23:43,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:23:43,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:23:43,705 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:23:43,705 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:23:43,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2023-08-30 16:23:44,673 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:23:44,847 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:23:44,847 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2023-08-30 16:23:44,856 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d688197e/576c6308066440a7a1bf4da91384dfcf/FLAG8707e1fb3 [2023-08-30 16:23:44,866 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d688197e/576c6308066440a7a1bf4da91384dfcf [2023-08-30 16:23:44,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:23:44,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:23:44,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:23:44,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:23:44,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:23:44,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:23:44" (1/1) ... [2023-08-30 16:23:44,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12849597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:44, skipping insertion in model container [2023-08-30 16:23:44,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:23:44" (1/1) ... [2023-08-30 16:23:44,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:23:44,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:23:45,005 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 16:23:45,114 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-atomic/szymanski.i[31505,31518] [2023-08-30 16:23:45,121 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-atomic/szymanski.i[32915,32928] [2023-08-30 16:23:45,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:23:45,138 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:23:45,155 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 16:23:45,181 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-atomic/szymanski.i[31505,31518] [2023-08-30 16:23:45,183 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-atomic/szymanski.i[32915,32928] [2023-08-30 16:23:45,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:23:45,220 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:23:45,220 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:23:45,220 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:23:45,225 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:23:45,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45 WrapperNode [2023-08-30 16:23:45,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:23:45,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:23:45,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:23:45,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:23:45,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,269 INFO L138 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-08-30 16:23:45,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:23:45,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:23:45,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:23:45,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:23:45,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,306 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:23:45,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:23:45,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:23:45,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:23:45,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (1/1) ... [2023-08-30 16:23:45,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:23:45,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:23:45,337 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) [2023-08-30 16:23:45,354 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 [2023-08-30 16:23:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:23:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-30 16:23:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-30 16:23:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 16:23:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 16:23:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:23:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:23:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:23:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:23:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:23:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:23:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:23:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:23:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:23:45,367 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:23:45,448 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:23:45,460 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:23:45,605 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:23:45,609 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:23:45,610 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-30 16:23:45,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:23:45 BoogieIcfgContainer [2023-08-30 16:23:45,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:23:45,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:23:45,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:23:45,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:23:45,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:23:44" (1/3) ... [2023-08-30 16:23:45,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edfa467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:23:45, skipping insertion in model container [2023-08-30 16:23:45,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:45" (2/3) ... [2023-08-30 16:23:45,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edfa467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:23:45, skipping insertion in model container [2023-08-30 16:23:45,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:23:45" (3/3) ... [2023-08-30 16:23:45,616 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2023-08-30 16:23:45,621 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:23:45,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:23:45,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 16:23:45,627 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:23:45,688 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 16:23:45,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 113 transitions, 242 flow [2023-08-30 16:23:45,776 INFO L130 PetriNetUnfolder]: 20/111 cut-off events. [2023-08-30 16:23:45,777 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:23:45,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 111 events. 20/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 148 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2023-08-30 16:23:45,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 113 transitions, 242 flow [2023-08-30 16:23:45,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 102 transitions, 213 flow [2023-08-30 16:23:45,787 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:23:45,804 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 102 transitions, 213 flow [2023-08-30 16:23:45,807 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 102 transitions, 213 flow [2023-08-30 16:23:45,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 102 transitions, 213 flow [2023-08-30 16:23:45,832 INFO L130 PetriNetUnfolder]: 20/102 cut-off events. [2023-08-30 16:23:45,833 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 16:23:45,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 102 events. 20/102 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 148 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2023-08-30 16:23:45,836 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-08-30 16:23:47,097 INFO L134 LiptonReduction]: Checked pairs total: 7688 [2023-08-30 16:23:47,097 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-08-30 16:23:47,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:23:47,110 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;@6950a8b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:23:47,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 16:23:47,113 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2023-08-30 16:23:47,113 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:23:47,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:23:47,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:23:47,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 16:23:47,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:23:47,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2670786, now seen corresponding path program 1 times [2023-08-30 16:23:47,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:23:47,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231097266] [2023-08-30 16:23:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:23:47,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:23:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:23:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:23:47,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:23:47,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231097266] [2023-08-30 16:23:47,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231097266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:23:47,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:23:47,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:23:47,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119824421] [2023-08-30 16:23:47,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:23:47,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:23:47,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:23:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:23:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:23:47,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 185 [2023-08-30 16:23:47,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2023-08-30 16:23:47,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:23:47,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 185 [2023-08-30 16:23:47,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:23:47,443 INFO L130 PetriNetUnfolder]: 759/1188 cut-off events. [2023-08-30 16:23:47,444 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 16:23:47,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 1188 events. 759/1188 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5233 event pairs, 211 based on Foata normal form. 24/782 useless extension candidates. Maximal degree in co-relation 2102. Up to 732 conditions per place. [2023-08-30 16:23:47,450 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 44 selfloop transitions, 3 changer transitions 2/61 dead transitions. [2023-08-30 16:23:47,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 232 flow [2023-08-30 16:23:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:23:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:23:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-08-30 16:23:47,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2023-08-30 16:23:47,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-08-30 16:23:47,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-08-30 16:23:47,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:23:47,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-08-30 16:23:47,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2023-08-30 16:23:47,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2023-08-30 16:23:47,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2023-08-30 16:23:47,469 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 99 flow. Second operand 3 states and 335 transitions. [2023-08-30 16:23:47,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 232 flow [2023-08-30 16:23:47,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 225 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:23:47,472 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 112 flow [2023-08-30 16:23:47,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2023-08-30 16:23:47,475 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-30 16:23:47,476 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 112 flow [2023-08-30 16:23:47,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2023-08-30 16:23:47,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:23:47,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:23:47,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:23:47,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 16:23:47,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:23:47,477 INFO L85 PathProgramCache]: Analyzing trace with hash 816907994, now seen corresponding path program 1 times [2023-08-30 16:23:47,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:23:47,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337535688] [2023-08-30 16:23:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:23:47,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:23:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:23:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:23:47,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:23:47,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337535688] [2023-08-30 16:23:47,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337535688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:23:47,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:23:47,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:23:47,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892151239] [2023-08-30 16:23:47,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:23:47,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:23:47,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:23:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:23:47,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:23:47,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 185 [2023-08-30 16:23:47,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2023-08-30 16:23:47,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:23:47,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 185 [2023-08-30 16:23:47,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:23:47,626 INFO L130 PetriNetUnfolder]: 773/1202 cut-off events. [2023-08-30 16:23:47,627 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2023-08-30 16:23:47,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 1202 events. 773/1202 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5066 event pairs, 248 based on Foata normal form. 34/905 useless extension candidates. Maximal degree in co-relation 1500. Up to 811 conditions per place. [2023-08-30 16:23:47,630 INFO L137 encePairwiseOnDemand]: 181/185 looper letters, 41 selfloop transitions, 2 changer transitions 6/60 dead transitions. [2023-08-30 16:23:47,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 241 flow [2023-08-30 16:23:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:23:47,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:23:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-08-30 16:23:47,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-08-30 16:23:47,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-08-30 16:23:47,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-08-30 16:23:47,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:23:47,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-08-30 16:23:47,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 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) [2023-08-30 16:23:47,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2023-08-30 16:23:47,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2023-08-30 16:23:47,635 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 112 flow. Second operand 3 states and 333 transitions. [2023-08-30 16:23:47,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 241 flow [2023-08-30 16:23:47,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:23:47,637 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 116 flow [2023-08-30 16:23:47,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2023-08-30 16:23:47,638 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-30 16:23:47,638 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 116 flow [2023-08-30 16:23:47,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2023-08-30 16:23:47,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:23:47,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:23:47,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:23:47,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 16:23:47,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:23:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash -477489175, now seen corresponding path program 1 times [2023-08-30 16:23:47,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:23:47,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102634316] [2023-08-30 16:23:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:23:47,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:23:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:23:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:23:47,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:23:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102634316] [2023-08-30 16:23:47,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102634316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:23:47,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:23:47,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:23:47,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050540532] [2023-08-30 16:23:47,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:23:47,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:23:47,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:23:47,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:23:47,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:23:47,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 185 [2023-08-30 16:23:47,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-08-30 16:23:47,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:23:47,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 185 [2023-08-30 16:23:47,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:23:47,883 INFO L130 PetriNetUnfolder]: 886/1437 cut-off events. [2023-08-30 16:23:47,883 INFO L131 PetriNetUnfolder]: For 260/260 co-relation queries the response was YES. [2023-08-30 16:23:47,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1437 events. 886/1437 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6513 event pairs, 281 based on Foata normal form. 24/1148 useless extension candidates. Maximal degree in co-relation 1902. Up to 703 conditions per place. [2023-08-30 16:23:47,887 INFO L137 encePairwiseOnDemand]: 168/185 looper letters, 43 selfloop transitions, 6 changer transitions 37/93 dead transitions. [2023-08-30 16:23:47,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 93 transitions, 405 flow [2023-08-30 16:23:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:23:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:23:47,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2023-08-30 16:23:47,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5232432432432432 [2023-08-30 16:23:47,889 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2023-08-30 16:23:47,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2023-08-30 16:23:47,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:23:47,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2023-08-30 16:23:47,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 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) [2023-08-30 16:23:47,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2023-08-30 16:23:47,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2023-08-30 16:23:47,893 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 116 flow. Second operand 5 states and 484 transitions. [2023-08-30 16:23:47,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 93 transitions, 405 flow [2023-08-30 16:23:47,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 93 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:23:47,896 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 171 flow [2023-08-30 16:23:47,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-30 16:23:47,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-08-30 16:23:47,898 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 171 flow [2023-08-30 16:23:47,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-08-30 16:23:47,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:23:47,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:23:47,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:23:47,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 16:23:47,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:23:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash -356387513, now seen corresponding path program 2 times [2023-08-30 16:23:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:23:47,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42892513] [2023-08-30 16:23:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:23:47,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:23:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:23:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:23:47,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:23:47,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42892513] [2023-08-30 16:23:47,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42892513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:23:47,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:23:47,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:23:47,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425107484] [2023-08-30 16:23:47,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:23:47,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:23:47,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:23:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:23:47,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:23:48,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 185 [2023-08-30 16:23:48,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2023-08-30 16:23:48,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:23:48,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 185 [2023-08-30 16:23:48,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:23:48,143 INFO L130 PetriNetUnfolder]: 698/1227 cut-off events. [2023-08-30 16:23:48,143 INFO L131 PetriNetUnfolder]: For 1014/1016 co-relation queries the response was YES. [2023-08-30 16:23:48,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 1227 events. 698/1227 cut-off events. For 1014/1016 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5844 event pairs, 200 based on Foata normal form. 40/1198 useless extension candidates. Maximal degree in co-relation 2067. Up to 508 conditions per place. [2023-08-30 16:23:48,147 INFO L137 encePairwiseOnDemand]: 168/185 looper letters, 52 selfloop transitions, 21 changer transitions 11/91 dead transitions. [2023-08-30 16:23:48,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 91 transitions, 545 flow [2023-08-30 16:23:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:23:48,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:23:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2023-08-30 16:23:48,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-08-30 16:23:48,152 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 481 transitions. [2023-08-30 16:23:48,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 481 transitions. [2023-08-30 16:23:48,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:23:48,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 481 transitions. [2023-08-30 16:23:48,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 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) [2023-08-30 16:23:48,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2023-08-30 16:23:48,155 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2023-08-30 16:23:48,155 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 171 flow. Second operand 5 states and 481 transitions. [2023-08-30 16:23:48,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 91 transitions, 545 flow [2023-08-30 16:23:48,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 91 transitions, 488 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-30 16:23:48,161 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 343 flow [2023-08-30 16:23:48,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2023-08-30 16:23:48,162 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2023-08-30 16:23:48,162 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 343 flow [2023-08-30 16:23:48,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2023-08-30 16:23:48,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:23:48,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:23:48,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:23:48,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 16:23:48,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:23:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash 942225471, now seen corresponding path program 3 times [2023-08-30 16:23:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:23:48,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775368742] [2023-08-30 16:23:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:23:48,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:23:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:23:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:23:48,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:23:48,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775368742] [2023-08-30 16:23:48,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775368742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:23:48,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:23:48,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:23:48,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631340091] [2023-08-30 16:23:48,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:23:48,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:23:48,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:23:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:23:48,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:23:48,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 185 [2023-08-30 16:23:48,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2023-08-30 16:23:48,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:23:48,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 185 [2023-08-30 16:23:48,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:23:48,318 INFO L130 PetriNetUnfolder]: 630/1084 cut-off events. [2023-08-30 16:23:48,318 INFO L131 PetriNetUnfolder]: For 1915/1986 co-relation queries the response was YES. [2023-08-30 16:23:48,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 1084 events. 630/1084 cut-off events. For 1915/1986 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5137 event pairs, 197 based on Foata normal form. 6/997 useless extension candidates. Maximal degree in co-relation 2821. Up to 812 conditions per place. [2023-08-30 16:23:48,322 INFO L137 encePairwiseOnDemand]: 182/185 looper letters, 51 selfloop transitions, 3 changer transitions 1/73 dead transitions. [2023-08-30 16:23:48,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 522 flow [2023-08-30 16:23:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:23:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:23:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-08-30 16:23:48,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581981981981982 [2023-08-30 16:23:48,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-08-30 16:23:48,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-08-30 16:23:48,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:23:48,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-08-30 16:23:48,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2023-08-30 16:23:48,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2023-08-30 16:23:48,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2023-08-30 16:23:48,327 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 343 flow. Second operand 3 states and 323 transitions. [2023-08-30 16:23:48,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 522 flow [2023-08-30 16:23:48,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 504 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-30 16:23:48,331 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 340 flow [2023-08-30 16:23:48,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 16:23:48,333 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-08-30 16:23:48,333 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 340 flow [2023-08-30 16:23:48,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2023-08-30 16:23:48,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:23:48,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:23:48,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:23:48,334 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 16:23:48,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:23:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash 295558141, now seen corresponding path program 4 times [2023-08-30 16:23:48,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:23:48,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863935134] [2023-08-30 16:23:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:23:48,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:23:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:23:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:23:48,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:23:48,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863935134] [2023-08-30 16:23:48,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863935134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:23:48,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:23:48,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:23:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800206366] [2023-08-30 16:23:48,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:23:48,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:23:48,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:23:48,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:23:48,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:23:48,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 185 [2023-08-30 16:23:48,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 340 flow. Second operand has 4 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) [2023-08-30 16:23:48,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:23:48,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 185 [2023-08-30 16:23:48,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:23:48,537 INFO L130 PetriNetUnfolder]: 740/1266 cut-off events. [2023-08-30 16:23:48,537 INFO L131 PetriNetUnfolder]: For 1843/1911 co-relation queries the response was YES. [2023-08-30 16:23:48,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3944 conditions, 1266 events. 740/1266 cut-off events. For 1843/1911 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5865 event pairs, 235 based on Foata normal form. 50/1281 useless extension candidates. Maximal degree in co-relation 2653. Up to 654 conditions per place. [2023-08-30 16:23:48,540 INFO L137 encePairwiseOnDemand]: 169/185 looper letters, 0 selfloop transitions, 0 changer transitions 103/103 dead transitions. [2023-08-30 16:23:48,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 690 flow [2023-08-30 16:23:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:23:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:23:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 476 transitions. [2023-08-30 16:23:48,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145945945945946 [2023-08-30 16:23:48,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 476 transitions. [2023-08-30 16:23:48,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 476 transitions. [2023-08-30 16:23:48,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:23:48,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 476 transitions. [2023-08-30 16:23:48,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 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) [2023-08-30 16:23:48,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2023-08-30 16:23:48,546 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2023-08-30 16:23:48,546 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 340 flow. Second operand 5 states and 476 transitions. [2023-08-30 16:23:48,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 690 flow [2023-08-30 16:23:48,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 671 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 16:23:48,552 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-08-30 16:23:48,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-08-30 16:23:48,554 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-08-30 16:23:48,554 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-08-30 16:23:48,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-08-30 16:23:48,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-30 16:23:48,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-30 16:23:48,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-30 16:23:48,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-30 16:23:48,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-30 16:23:48,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-30 16:23:48,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:23:48,558 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-08-30 16:23:48,562 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:23:48,562 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:23:48,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:23:48 BasicIcfg [2023-08-30 16:23:48,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:23:48,565 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:23:48,565 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:23:48,565 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:23:48,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:23:45" (3/4) ... [2023-08-30 16:23:48,567 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:23:48,570 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-08-30 16:23:48,570 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-08-30 16:23:48,573 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 16:23:48,573 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:23:48,573 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:23:48,573 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:23:48,598 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:23:48,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:23:48,599 INFO L158 Benchmark]: Toolchain (without parser) took 3730.42ms. Allocated memory was 71.3MB in the beginning and 113.2MB in the end (delta: 41.9MB). Free memory was 46.8MB in the beginning and 45.0MB in the end (delta: 1.8MB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. [2023-08-30 16:23:48,599 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory was 48.3MB in the beginning and 48.3MB in the end (delta: 52.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:23:48,599 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.36ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 46.5MB in the beginning and 67.3MB in the end (delta: -20.8MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2023-08-30 16:23:48,599 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.07ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 65.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:23:48,599 INFO L158 Benchmark]: Boogie Preprocessor took 43.40ms. Allocated memory is still 94.4MB. Free memory was 65.2MB in the beginning and 63.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:23:48,600 INFO L158 Benchmark]: RCFGBuilder took 297.09ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 49.3MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 16:23:48,600 INFO L158 Benchmark]: TraceAbstraction took 2952.13ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 48.6MB in the beginning and 47.1MB in the end (delta: 1.5MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2023-08-30 16:23:48,600 INFO L158 Benchmark]: Witness Printer took 33.73ms. Allocated memory is still 113.2MB. Free memory was 47.1MB in the beginning and 45.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:23:48,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory was 48.3MB in the beginning and 48.3MB in the end (delta: 52.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.36ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 46.5MB in the beginning and 67.3MB in the end (delta: -20.8MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.07ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 65.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.40ms. Allocated memory is still 94.4MB. Free memory was 65.2MB in the beginning and 63.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 297.09ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 49.3MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2952.13ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 48.6MB in the beginning and 47.1MB in the end (delta: 1.5MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. * Witness Printer took 33.73ms. Allocated memory is still 113.2MB. Free memory was 47.1MB in the beginning and 45.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 89 PlacesBefore, 41 PlacesAfterwards, 102 TransitionsBefore, 45 TransitionsAfterwards, 3672 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 9 ChoiceCompositions, 72 TotalNumberOfCompositions, 7688 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3500, independent: 3272, independent conditional: 0, independent unconditional: 3272, dependent: 228, dependent conditional: 0, dependent unconditional: 228, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1777, independent: 1737, independent conditional: 0, independent unconditional: 1737, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3500, independent: 1535, independent conditional: 0, independent unconditional: 1535, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 1777, unknown conditional: 0, unknown unconditional: 1777] , Statistics on independence cache: Total cache size (in pairs): 194, Positive cache size: 166, Positive conditional cache size: 0, Positive unconditional cache size: 166, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 6 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: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 372 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 244 mSDsluCounter, 67 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 828 IncrementalHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 28 mSDtfsCounter, 828 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:23:48,620 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